YES This is Ultimate 0.2.2-dev-e7f90c1-m [2023-02-13 03:41:15,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-13 03:41:15,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-13 03:41:15,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-13 03:41:15,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-13 03:41:15,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-13 03:41:15,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-13 03:41:15,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-13 03:41:15,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-13 03:41:15,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-13 03:41:15,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-13 03:41:15,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-13 03:41:15,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-13 03:41:15,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-13 03:41:15,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-13 03:41:15,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-13 03:41:15,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-13 03:41:15,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-13 03:41:15,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-13 03:41:15,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-13 03:41:15,970 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2023-02-13 03:41:15,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-13 03:41:15,971 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-13 03:41:15,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-13 03:41:15,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-13 03:41:15,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-13 03:41:15,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-13 03:41:15,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-13 03:41:15,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-13 03:41:15,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-13 03:41:15,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-13 03:41:15,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-13 03:41:15,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-13 03:41:15,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-13 03:41:15,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-13 03:41:15,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-13 03:41:15,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-13 03:41:15,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-13 03:41:15,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-13 03:41:15,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-13 03:41:15,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-13 03:41:15,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-13 03:41:15,979 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/Ultimate/./../termcomp2017.epf [2023-02-13 03:41:15,990 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-13 03:41:15,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-13 03:41:15,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-13 03:41:15,991 INFO L138 SettingsManager]: * Rewrite not-equals=true [2023-02-13 03:41:15,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-13 03:41:15,991 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2023-02-13 03:41:15,991 INFO L138 SettingsManager]: * Use SBE=true [2023-02-13 03:41:15,991 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-13 03:41:15,991 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-13 03:41:15,991 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-13 03:41:15,991 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2023-02-13 03:41:15,991 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-13 03:41:15,991 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-13 03:41:15,992 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2023-02-13 03:41:15,992 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:15,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-13 03:41:15,992 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-13 03:41:15,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-13 03:41:15,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-13 03:41:15,992 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-13 03:41:15,992 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2023-02-13 03:41:15,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-13 03:41:15,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-13 03:41:15,992 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2023-02-13 03:41:15,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2023-02-13 03:41:15,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-13 03:41:15,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-13 03:41:15,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-13 03:41:15,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/export/starexec/sandbox/solver/Ultimate/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-02-13 03:41:16,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-13 03:41:16,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-13 03:41:16,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-13 03:41:16,133 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-13 03:41:16,134 INFO L275 PluginConnector]: CDTParser initialized [2023-02-13 03:41:16,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2023-02-13 03:41:16,185 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/8ebd18e4bf2f41df8587351ac4a7c3e2/FLAGd2fe475dd [2023-02-13 03:41:16,509 INFO L306 CDTParser]: Found 1 translation units. [2023-02-13 03:41:16,509 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2023-02-13 03:41:16,515 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/8ebd18e4bf2f41df8587351ac4a7c3e2/FLAGd2fe475dd [2023-02-13 03:41:16,974 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/8ebd18e4bf2f41df8587351ac4a7c3e2 [2023-02-13 03:41:16,978 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-13 03:41:16,980 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2023-02-13 03:41:16,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-13 03:41:16,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-13 03:41:16,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-13 03:41:16,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 03:41:16" (1/1) ... [2023-02-13 03:41:16,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5167fcdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:16, skipping insertion in model container [2023-02-13 03:41:16,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 03:41:16" (1/1) ... [2023-02-13 03:41:17,002 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-13 03:41:17,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 03:41:17,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 03:41:17,091 INFO L203 MainTranslator]: Completed pre-run [2023-02-13 03:41:17,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 03:41:17,104 INFO L208 MainTranslator]: Completed translation [2023-02-13 03:41:17,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17 WrapperNode [2023-02-13 03:41:17,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-13 03:41:17,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-13 03:41:17,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-13 03:41:17,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-13 03:41:17,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,138 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 21 [2023-02-13 03:41:17,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-13 03:41:17,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-13 03:41:17,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-13 03:41:17,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-13 03:41:17,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-13 03:41:17,158 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-13 03:41:17,158 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-13 03:41:17,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-13 03:41:17,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2023-02-13 03:41:17,173 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:17,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:17,190 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (1)] Waiting until timeout for monitored process [2023-02-13 03:41:17,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-13 03:41:17,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-13 03:41:17,327 INFO L234 CfgBuilder]: Building ICFG [2023-02-13 03:41:17,329 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-13 03:41:17,391 INFO L275 CfgBuilder]: Performing block encoding [2023-02-13 03:41:17,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-13 03:41:17,402 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-13 03:41:17,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 03:41:17 BoogieIcfgContainer [2023-02-13 03:41:17,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-13 03:41:17,405 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2023-02-13 03:41:17,405 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2023-02-13 03:41:17,407 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2023-02-13 03:41:17,409 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 03:41:17" (1/1) ... [2023-02-13 03:41:17,429 INFO L313 BlockEncoder]: Initial Icfg 9 locations, 12 edges [2023-02-13 03:41:17,430 INFO L258 BlockEncoder]: Using Remove infeasible edges [2023-02-13 03:41:17,431 INFO L263 BlockEncoder]: Using Maximize final states [2023-02-13 03:41:17,431 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2023-02-13 03:41:17,432 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2023-02-13 03:41:17,432 INFO L296 BlockEncoder]: Using Remove sink states [2023-02-13 03:41:17,435 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2023-02-13 03:41:17,435 INFO L179 BlockEncoder]: Using Rewrite not-equals [2023-02-13 03:41:17,444 INFO L185 BlockEncoder]: Using Use SBE [2023-02-13 03:41:17,448 INFO L200 BlockEncoder]: SBE split 0 edges [2023-02-13 03:41:17,450 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility [2023-02-13 03:41:17,451 INFO L71 MaximizeFinalStates]: 0 new accepting states [2023-02-13 03:41:17,463 INFO L101 BaseMinimizeStates]: Removed 10 edges and 5 locations by large block encoding [2023-02-13 03:41:17,465 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states [2023-02-13 03:41:17,467 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2023-02-13 03:41:17,467 INFO L71 MaximizeFinalStates]: 0 new accepting states [2023-02-13 03:41:17,467 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2023-02-13 03:41:17,467 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2023-02-13 03:41:17,468 INFO L313 BlockEncoder]: Encoded RCFG 3 locations, 4 edges [2023-02-13 03:41:17,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 13.02 03:41:17 BasicIcfg [2023-02-13 03:41:17,468 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2023-02-13 03:41:17,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-13 03:41:17,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-13 03:41:17,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-13 03:41:17,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.02 03:41:16" (1/4) ... [2023-02-13 03:41:17,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ab9322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 03:41:17, skipping insertion in model container [2023-02-13 03:41:17,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (2/4) ... [2023-02-13 03:41:17,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ab9322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 03:41:17, skipping insertion in model container [2023-02-13 03:41:17,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 03:41:17" (3/4) ... [2023-02-13 03:41:17,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ab9322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.02 03:41:17, skipping insertion in model container [2023-02-13 03:41:17,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 13.02 03:41:17" (4/4) ... [2023-02-13 03:41:17,475 INFO L111 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2023-02-13 03:41:17,488 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2023-02-13 03:41:17,488 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 0 error locations. [2023-02-13 03:41:17,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ab9322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.02 03:41:17, skipping insertion in model container [2023-02-13 03:41:17,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-13 03:41:17,489 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-13 03:41:17,489 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-13 03:41:17,491 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-13 03:41:17,492 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-13 03:41:17,492 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.02 03:41:16" (1/4) ... [2023-02-13 03:41:17,492 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@669eb62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.02 03:41:17, skipping insertion in model container [2023-02-13 03:41:17,492 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-13 03:41:17,492 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:41:17" (2/4) ... [2023-02-13 03:41:17,492 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@669eb62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.02 03:41:17, skipping insertion in model container [2023-02-13 03:41:17,493 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-13 03:41:17,493 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 03:41:17" (3/4) ... [2023-02-13 03:41:17,493 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@669eb62c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.02 03:41:17, skipping insertion in model container [2023-02-13 03:41:17,493 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-13 03:41:17,493 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 13.02 03:41:17" (4/4) ... [2023-02-13 03:41:17,494 INFO L322 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2023-02-13 03:41:17,522 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2023-02-13 03:41:17,523 INFO L302 stractBuchiCegarLoop]: Hoare is true [2023-02-13 03:41:17,523 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-13 03:41:17,523 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-13 03:41:17,523 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-13 03:41:17,523 INFO L306 stractBuchiCegarLoop]: Difference is false [2023-02-13 03:41:17,523 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-13 03:41:17,523 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-13 03:41:17,526 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:17,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-13 03:41:17,535 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-13 03:41:17,535 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-13 03:41:17,538 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2023-02-13 03:41:17,538 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-13 03:41:17,538 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-13 03:41:17,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:17,539 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2023-02-13 03:41:17,539 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-13 03:41:17,539 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-13 03:41:17,539 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2023-02-13 03:41:17,539 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2023-02-13 03:41:17,542 INFO L733 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue [46] ULTIMATE.startENTRY-->L19-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_4|, ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_8|, ULTIMATE.start_main_#t~nondet1#1=|v_ULTIMATE.start_main_#t~nondet1#1_3|, ULTIMATE.start_main_#t~nondet0#1=|v_ULTIMATE.start_main_#t~nondet0#1_3|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_8|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1, ULTIMATE.start_main_~x1~0#1, ULTIMATE.start_main_#t~nondet1#1, ULTIMATE.start_main_#t~nondet0#1, ULTIMATE.start_main_~x2~0#1] 2#L19-2true [2023-02-13 03:41:17,542 INFO L735 eck$LassoCheckResult]: Loop: 2#L19-2true [34] L19-2-->L21-2: Formula: (and (= 10 |v_ULTIMATE.start_main_~x2~0#1_7|) (<= |v_ULTIMATE.start_main_~x1~0#1_7| 10)) InVars {ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_7|} OutVars{ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_7|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 4#L21-2true [48] L21-2-->L19-2: Formula: (and (= |v_ULTIMATE.start_main_~x1~0#1_12| (+ |v_ULTIMATE.start_main_~x1~0#1_13| 1)) (<= |v_ULTIMATE.start_main_~x2~0#1_10| 1)) InVars {ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_13|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_10|} OutVars{ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_12|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_10|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x1~0#1] 2#L19-2true [2023-02-13 03:41:17,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:17,545 INFO L85 PathProgramCache]: Analyzing trace with hash 77, now seen corresponding path program 1 times [2023-02-13 03:41:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:17,551 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284213412] [2023-02-13 03:41:17,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:17,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:17,596 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:41:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:17,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:41:17,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2063, now seen corresponding path program 1 times [2023-02-13 03:41:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:17,610 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961221612] [2023-02-13 03:41:17,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:17,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:41:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 03:41:17,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 03:41:17,652 INFO L335 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961221612] [2023-02-13 03:41:17,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961221612] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 03:41:17,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 03:41:17,654 ERROR L191 FreeRefinementEngine]: {9#true} [11#(<= 10 |ULTIMATE.start_main_~x2~0#1|)] {10#false} [2023-02-13 03:41:17,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-13 03:41:17,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000763182] [2023-02-13 03:41:17,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 03:41:17,660 INFO L750 eck$LassoCheckResult]: loop already infeasible [2023-02-13 03:41:17,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 03:41:17,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 03:41:17,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 03:41:17,682 INFO L87 Difference]: Start difference. First operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:17,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 03:41:17,691 INFO L93 Difference]: Finished difference Result 4 states and 5 transitions. [2023-02-13 03:41:17,692 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 4 states and 5 transitions. [2023-02-13 03:41:17,692 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-13 03:41:17,694 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 4 states to 4 states and 5 transitions. [2023-02-13 03:41:17,694 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2023-02-13 03:41:17,695 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-02-13 03:41:17,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 5 transitions. [2023-02-13 03:41:17,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-13 03:41:17,695 INFO L220 hiAutomatonCegarLoop]: Abstraction has 4 states and 5 transitions. [2023-02-13 03:41:17,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states and 5 transitions. [2023-02-13 03:41:17,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2023-02-13 03:41:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2023-02-13 03:41:17,709 INFO L242 hiAutomatonCegarLoop]: Abstraction has 4 states and 5 transitions. [2023-02-13 03:41:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 03:41:17,715 INFO L426 stractBuchiCegarLoop]: Abstraction has 4 states and 5 transitions. [2023-02-13 03:41:17,715 INFO L333 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-13 03:41:17,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 4 states and 5 transitions. [2023-02-13 03:41:17,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-13 03:41:17,715 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-13 03:41:17,715 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-13 03:41:17,715 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2023-02-13 03:41:17,716 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-13 03:41:17,716 INFO L733 eck$LassoCheckResult]: Stem: 18#ULTIMATE.startENTRY [46] ULTIMATE.startENTRY-->L19-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_4|, ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_8|, ULTIMATE.start_main_#t~nondet1#1=|v_ULTIMATE.start_main_#t~nondet1#1_3|, ULTIMATE.start_main_#t~nondet0#1=|v_ULTIMATE.start_main_#t~nondet0#1_3|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_8|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1, ULTIMATE.start_main_~x1~0#1, ULTIMATE.start_main_#t~nondet1#1, ULTIMATE.start_main_#t~nondet0#1, ULTIMATE.start_main_~x2~0#1] 16#L19-2 [2023-02-13 03:41:17,716 INFO L735 eck$LassoCheckResult]: Loop: 16#L19-2 [34] L19-2-->L21-2: Formula: (and (= 10 |v_ULTIMATE.start_main_~x2~0#1_7|) (<= |v_ULTIMATE.start_main_~x1~0#1_7| 10)) InVars {ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_7|} OutVars{ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_7|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 17#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 19#L21-2 [48] L21-2-->L19-2: Formula: (and (= |v_ULTIMATE.start_main_~x1~0#1_12| (+ |v_ULTIMATE.start_main_~x1~0#1_13| 1)) (<= |v_ULTIMATE.start_main_~x2~0#1_10| 1)) InVars {ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_13|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_10|} OutVars{ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_12|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_10|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x1~0#1] 16#L19-2 [2023-02-13 03:41:17,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:17,716 INFO L85 PathProgramCache]: Analyzing trace with hash 77, now seen corresponding path program 2 times [2023-02-13 03:41:17,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:17,717 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36171001] [2023-02-13 03:41:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:17,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:17,719 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:41:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:17,721 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:41:17,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 63722, now seen corresponding path program 1 times [2023-02-13 03:41:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:17,722 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316902308] [2023-02-13 03:41:17,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:17,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:41:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 03:41:17,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 03:41:17,738 INFO L335 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316902308] [2023-02-13 03:41:17,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316902308] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 03:41:17,739 INFO L335 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561279806] [2023-02-13 03:41:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:17,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 03:41:17,739 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:17,742 INFO L229 MonitoredProcess]: Starting monitored process 2 with /export/starexec/sandbox/solver/Ultimate/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 03:41:17,744 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-13 03:41:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:41:17,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-13 03:41:17,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 03:41:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 03:41:17,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 03:41:17,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 03:41:17,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561279806] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 03:41:17,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 03:41:17,805 ERROR L197 FreeRefinementEngine]: {23#true} [25#(<= 10 |ULTIMATE.start_main_~x2~0#1|), 26#(<= 9 |ULTIMATE.start_main_~x2~0#1|)] {24#false} [2023-02-13 03:41:17,805 ERROR L197 FreeRefinementEngine]: {23#true} [25#(<= 10 |ULTIMATE.start_main_~x2~0#1|), 26#(<= 9 |ULTIMATE.start_main_~x2~0#1|)] {24#false} [2023-02-13 03:41:17,806 ERROR L197 FreeRefinementEngine]: {23#true} [40#(< 2 |ULTIMATE.start_main_~x2~0#1|), 36#(not (<= |ULTIMATE.start_main_~x2~0#1| 1))] {24#false} [2023-02-13 03:41:17,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-02-13 03:41:17,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733387121] [2023-02-13 03:41:17,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 03:41:17,807 INFO L750 eck$LassoCheckResult]: loop already infeasible [2023-02-13 03:41:17,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 03:41:17,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-13 03:41:17,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-13 03:41:17,808 INFO L87 Difference]: Start difference. First operand 4 states and 5 transitions. cyclomatic complexity: 2 Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:17,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 03:41:17,824 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2023-02-13 03:41:17,824 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2023-02-13 03:41:17,824 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-13 03:41:17,825 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 8 transitions. [2023-02-13 03:41:17,825 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-02-13 03:41:17,825 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2023-02-13 03:41:17,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2023-02-13 03:41:17,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-13 03:41:17,825 INFO L220 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-13 03:41:17,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2023-02-13 03:41:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-02-13 03:41:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2023-02-13 03:41:17,826 INFO L242 hiAutomatonCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-13 03:41:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-13 03:41:17,828 INFO L426 stractBuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2023-02-13 03:41:17,828 INFO L333 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-13 03:41:17,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2023-02-13 03:41:17,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-13 03:41:17,829 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-13 03:41:17,829 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-13 03:41:17,829 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2023-02-13 03:41:17,829 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [4, 1, 1] [2023-02-13 03:41:17,829 INFO L733 eck$LassoCheckResult]: Stem: 50#ULTIMATE.startENTRY [46] ULTIMATE.startENTRY-->L19-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_4|, ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_8|, ULTIMATE.start_main_#t~nondet1#1=|v_ULTIMATE.start_main_#t~nondet1#1_3|, ULTIMATE.start_main_#t~nondet0#1=|v_ULTIMATE.start_main_#t~nondet0#1_3|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_8|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1, ULTIMATE.start_main_~x1~0#1, ULTIMATE.start_main_#t~nondet1#1, ULTIMATE.start_main_#t~nondet0#1, ULTIMATE.start_main_~x2~0#1] 48#L19-2 [2023-02-13 03:41:17,830 INFO L735 eck$LassoCheckResult]: Loop: 48#L19-2 [34] L19-2-->L21-2: Formula: (and (= 10 |v_ULTIMATE.start_main_~x2~0#1_7|) (<= |v_ULTIMATE.start_main_~x1~0#1_7| 10)) InVars {ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_7|} OutVars{ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_7|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 49#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 51#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 54#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 53#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 52#L21-2 [48] L21-2-->L19-2: Formula: (and (= |v_ULTIMATE.start_main_~x1~0#1_12| (+ |v_ULTIMATE.start_main_~x1~0#1_13| 1)) (<= |v_ULTIMATE.start_main_~x2~0#1_10| 1)) InVars {ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_13|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_10|} OutVars{ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_12|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_10|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x1~0#1] 48#L19-2 [2023-02-13 03:41:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:17,830 INFO L85 PathProgramCache]: Analyzing trace with hash 77, now seen corresponding path program 3 times [2023-02-13 03:41:17,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:17,830 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387386081] [2023-02-13 03:41:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:17,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:17,833 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:41:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:17,834 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:41:17,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:17,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1898112719, now seen corresponding path program 2 times [2023-02-13 03:41:17,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:17,835 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693703851] [2023-02-13 03:41:17,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:17,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:41:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 03:41:17,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 03:41:17,892 INFO L335 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693703851] [2023-02-13 03:41:17,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693703851] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 03:41:17,892 INFO L335 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800888775] [2023-02-13 03:41:17,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-13 03:41:17,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 03:41:17,893 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:17,894 INFO L229 MonitoredProcess]: Starting monitored process 3 with /export/starexec/sandbox/solver/Ultimate/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 03:41:17,897 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-13 03:41:17,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-13 03:41:17,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-13 03:41:17,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-13 03:41:17,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 03:41:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 03:41:17,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 03:41:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 03:41:17,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800888775] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 03:41:17,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 03:41:17,961 ERROR L197 FreeRefinementEngine]: {58#true} [60#(<= 10 |ULTIMATE.start_main_~x2~0#1|), 61#(<= 9 |ULTIMATE.start_main_~x2~0#1|), 62#(<= 8 |ULTIMATE.start_main_~x2~0#1|), 63#(<= 7 |ULTIMATE.start_main_~x2~0#1|), 64#(<= 6 |ULTIMATE.start_main_~x2~0#1|)] {59#false} [2023-02-13 03:41:17,961 ERROR L197 FreeRefinementEngine]: {58#true} [60#(<= 10 |ULTIMATE.start_main_~x2~0#1|), 61#(<= 9 |ULTIMATE.start_main_~x2~0#1|), 62#(<= 8 |ULTIMATE.start_main_~x2~0#1|), 63#(<= 7 |ULTIMATE.start_main_~x2~0#1|), 64#(<= 6 |ULTIMATE.start_main_~x2~0#1|)] {59#false} [2023-02-13 03:41:17,961 ERROR L197 FreeRefinementEngine]: {58#true} [64#(<= 6 |ULTIMATE.start_main_~x2~0#1|), 95#(< 4 |ULTIMATE.start_main_~x2~0#1|), 91#(< 3 |ULTIMATE.start_main_~x2~0#1|), 87#(< 2 |ULTIMATE.start_main_~x2~0#1|), 83#(not (<= |ULTIMATE.start_main_~x2~0#1| 1))] {59#false} [2023-02-13 03:41:17,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-02-13 03:41:17,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542088512] [2023-02-13 03:41:17,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 03:41:17,962 INFO L750 eck$LassoCheckResult]: loop already infeasible [2023-02-13 03:41:17,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 03:41:17,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-13 03:41:17,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2023-02-13 03:41:17,963 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 03:41:17,973 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2023-02-13 03:41:17,973 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2023-02-13 03:41:17,973 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-02-13 03:41:17,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 13 transitions. [2023-02-13 03:41:17,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2023-02-13 03:41:17,974 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-13 03:41:17,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2023-02-13 03:41:17,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-13 03:41:17,974 INFO L220 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-13 03:41:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2023-02-13 03:41:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-02-13 03:41:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-02-13 03:41:17,975 INFO L242 hiAutomatonCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-13 03:41:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-13 03:41:17,976 INFO L426 stractBuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-13 03:41:17,977 INFO L333 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-13 03:41:17,977 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2023-02-13 03:41:17,977 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2023-02-13 03:41:17,977 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-13 03:41:17,977 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-13 03:41:17,977 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2023-02-13 03:41:17,977 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [9, 1, 1] [2023-02-13 03:41:17,978 INFO L733 eck$LassoCheckResult]: Stem: 113#ULTIMATE.startENTRY [46] ULTIMATE.startENTRY-->L19-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_4|, ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_8|, ULTIMATE.start_main_#t~nondet1#1=|v_ULTIMATE.start_main_#t~nondet1#1_3|, ULTIMATE.start_main_#t~nondet0#1=|v_ULTIMATE.start_main_#t~nondet0#1_3|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_8|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1, ULTIMATE.start_main_~x1~0#1, ULTIMATE.start_main_#t~nondet1#1, ULTIMATE.start_main_#t~nondet0#1, ULTIMATE.start_main_~x2~0#1] 111#L19-2 [2023-02-13 03:41:17,978 INFO L735 eck$LassoCheckResult]: Loop: 111#L19-2 [34] L19-2-->L21-2: Formula: (and (= 10 |v_ULTIMATE.start_main_~x2~0#1_7|) (<= |v_ULTIMATE.start_main_~x1~0#1_7| 10)) InVars {ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_7|} OutVars{ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_7|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 112#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 114#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 122#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 121#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 120#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 119#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 118#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 117#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 116#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 115#L21-2 [48] L21-2-->L19-2: Formula: (and (= |v_ULTIMATE.start_main_~x1~0#1_12| (+ |v_ULTIMATE.start_main_~x1~0#1_13| 1)) (<= |v_ULTIMATE.start_main_~x2~0#1_10| 1)) InVars {ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_13|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_10|} OutVars{ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_12|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_10|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x1~0#1] 111#L19-2 [2023-02-13 03:41:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash 77, now seen corresponding path program 4 times [2023-02-13 03:41:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:17,979 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705163489] [2023-02-13 03:41:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:17,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:17,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:17,981 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:41:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:17,982 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:41:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:17,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1026274454, now seen corresponding path program 3 times [2023-02-13 03:41:17,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:17,983 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756587677] [2023-02-13 03:41:17,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:17,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:17,991 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:41:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:17,998 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:41:17,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash 194077598, now seen corresponding path program 1 times [2023-02-13 03:41:17,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:17,999 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535914497] [2023-02-13 03:41:17,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:17,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:18,006 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:41:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:18,012 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:41:18,072 INFO L210 LassoAnalysis]: Preferences: [2023-02-13 03:41:18,073 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-13 03:41:18,073 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-13 03:41:18,073 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-13 03:41:18,073 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-13 03:41:18,073 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,073 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-13 03:41:18,073 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-13 03:41:18,073 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2023-02-13 03:41:18,073 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-13 03:41:18,073 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-13 03:41:18,080 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,086 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,088 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,091 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,117 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-13 03:41:18,118 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-13 03:41:18,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,119 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,120 INFO L229 MonitoredProcess]: Starting monitored process 4 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,121 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-13 03:41:18,121 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:41:18,122 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:41:18,133 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:41:18,133 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-13 03:41:18,151 INFO L540 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2023-02-13 03:41:18,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,151 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,153 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-13 03:41:18,154 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:41:18,154 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:41:18,164 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:41:18,164 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-13 03:41:18,192 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-02-13 03:41:18,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,193 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,195 INFO L229 MonitoredProcess]: Starting monitored process 6 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,197 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2023-02-13 03:41:18,197 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:41:18,198 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:41:18,210 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:41:18,210 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x2~0#1=1} Honda state: {ULTIMATE.start_main_~x2~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-13 03:41:18,240 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-02-13 03:41:18,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,241 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,242 INFO L229 MonitoredProcess]: Starting monitored process 7 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,243 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2023-02-13 03:41:18,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:41:18,244 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:41:18,276 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-02-13 03:41:18,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,277 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,278 INFO L229 MonitoredProcess]: Starting monitored process 8 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,279 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2023-02-13 03:41:18,280 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-13 03:41:18,280 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:41:18,324 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-13 03:41:18,325 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-02-13 03:41:18,326 INFO L210 LassoAnalysis]: Preferences: [2023-02-13 03:41:18,326 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-13 03:41:18,327 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-13 03:41:18,327 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-13 03:41:18,327 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-13 03:41:18,327 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:18,327 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-13 03:41:18,328 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-13 03:41:18,328 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration4_Loop [2023-02-13 03:41:18,328 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-13 03:41:18,329 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-13 03:41:18,330 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,334 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,337 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,342 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,399 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-13 03:41:18,403 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-13 03:41:18,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:18,405 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,406 INFO L229 MonitoredProcess]: Starting monitored process 9 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,407 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-13 03:41:18,408 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-13 03:41:18,417 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-13 03:41:18,417 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-13 03:41:18,417 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-13 03:41:18,417 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-13 03:41:18,422 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-13 03:41:18,423 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-13 03:41:18,429 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-13 03:41:18,459 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-02-13 03:41:18,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:18,461 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,462 INFO L229 MonitoredProcess]: Starting monitored process 10 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,463 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2023-02-13 03:41:18,464 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-13 03:41:18,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-13 03:41:18,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-13 03:41:18,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-13 03:41:18,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-13 03:41:18,477 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-13 03:41:18,477 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-13 03:41:18,485 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-13 03:41:18,515 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2023-02-13 03:41:18,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:18,516 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,517 INFO L229 MonitoredProcess]: Starting monitored process 11 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,519 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-13 03:41:18,520 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-13 03:41:18,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-13 03:41:18,530 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-13 03:41:18,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-13 03:41:18,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-13 03:41:18,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-13 03:41:18,533 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-13 03:41:18,533 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-13 03:41:18,537 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-13 03:41:18,573 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2023-02-13 03:41:18,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:18,575 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,576 INFO L229 MonitoredProcess]: Starting monitored process 12 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,578 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-13 03:41:18,579 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-13 03:41:18,584 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-13 03:41:18,584 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-13 03:41:18,585 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-13 03:41:18,585 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-13 03:41:18,585 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-13 03:41:18,587 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-13 03:41:18,587 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-13 03:41:18,603 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-13 03:41:18,609 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-13 03:41:18,609 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-13 03:41:18,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:18,612 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,612 INFO L229 MonitoredProcess]: Starting monitored process 13 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,614 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-13 03:41:18,614 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-13 03:41:18,615 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-13 03:41:18,615 INFO L513 LassoAnalysis]: Proved termination. [2023-02-13 03:41:18,616 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x1~0#1) = -2*ULTIMATE.start_main_~x1~0#1 + 21 Supporting invariants [] [2023-02-13 03:41:18,639 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-02-13 03:41:18,646 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-13 03:41:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:41:18,680 WARN L261 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-13 03:41:18,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 03:41:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:41:18,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-13 03:41:18,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 03:41:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-13 03:41:18,736 INFO L100 LoopCannibalizer]: 2 predicates before loop cannibalization 2 predicates after loop cannibalization [2023-02-13 03:41:18,738 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-13 03:41:18,738 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:18,749 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 12 states and 13 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 26 transitions. Complement of second has 4 states. [2023-02-13 03:41:18,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-13 03:41:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2023-02-13 03:41:18,752 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 11 letters. [2023-02-13 03:41:18,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-13 03:41:18,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 12 letters. Loop has 11 letters. [2023-02-13 03:41:18,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-13 03:41:18,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 22 letters. [2023-02-13 03:41:18,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-13 03:41:18,755 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 26 transitions. [2023-02-13 03:41:18,755 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-13 03:41:18,756 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 26 transitions. [2023-02-13 03:41:18,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-02-13 03:41:18,756 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-13 03:41:18,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 26 transitions. [2023-02-13 03:41:18,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-13 03:41:18,756 INFO L220 hiAutomatonCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-13 03:41:18,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 26 transitions. [2023-02-13 03:41:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2023-02-13 03:41:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:18,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2023-02-13 03:41:18,758 INFO L242 hiAutomatonCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-02-13 03:41:18,758 INFO L426 stractBuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2023-02-13 03:41:18,758 INFO L333 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-13 03:41:18,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2023-02-13 03:41:18,758 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-13 03:41:18,758 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-13 03:41:18,758 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-13 03:41:18,758 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-13 03:41:18,758 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-13 03:41:18,759 INFO L733 eck$LassoCheckResult]: Stem: 206#ULTIMATE.startENTRY [46] ULTIMATE.startENTRY-->L19-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_4|, ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_8|, ULTIMATE.start_main_#t~nondet1#1=|v_ULTIMATE.start_main_#t~nondet1#1_3|, ULTIMATE.start_main_#t~nondet0#1=|v_ULTIMATE.start_main_#t~nondet0#1_3|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_8|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1, ULTIMATE.start_main_~x1~0#1, ULTIMATE.start_main_#t~nondet1#1, ULTIMATE.start_main_#t~nondet0#1, ULTIMATE.start_main_~x2~0#1] 202#L19-2 [34] L19-2-->L21-2: Formula: (and (= 10 |v_ULTIMATE.start_main_~x2~0#1_7|) (<= |v_ULTIMATE.start_main_~x1~0#1_7| 10)) InVars {ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_7|} OutVars{ULTIMATE.start_main_~x1~0#1=|v_ULTIMATE.start_main_~x1~0#1_7|, ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 204#L21-2 [2023-02-13 03:41:18,759 INFO L735 eck$LassoCheckResult]: Loop: 204#L21-2 [39] L21-2-->L21-2: Formula: (and (< 1 |v_ULTIMATE.start_main_~x2~0#1_6|) (= (+ (- 1) |v_ULTIMATE.start_main_~x2~0#1_6|) |v_ULTIMATE.start_main_~x2~0#1_5|)) InVars {ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_6|} OutVars{ULTIMATE.start_main_~x2~0#1=|v_ULTIMATE.start_main_~x2~0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x2~0#1] 204#L21-2 [2023-02-13 03:41:18,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:18,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2421, now seen corresponding path program 1 times [2023-02-13 03:41:18,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:18,759 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670220052] [2023-02-13 03:41:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:18,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:18,762 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:41:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:18,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:41:18,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:18,764 INFO L85 PathProgramCache]: Analyzing trace with hash 70, now seen corresponding path program 1 times [2023-02-13 03:41:18,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:18,764 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097838339] [2023-02-13 03:41:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:18,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:18,766 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:41:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:18,768 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:41:18,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:18,768 INFO L85 PathProgramCache]: Analyzing trace with hash 75090, now seen corresponding path program 1 times [2023-02-13 03:41:18,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:41:18,768 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759460913] [2023-02-13 03:41:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:41:18,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:41:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:18,770 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:41:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:41:18,772 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:41:18,777 INFO L210 LassoAnalysis]: Preferences: [2023-02-13 03:41:18,777 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-13 03:41:18,777 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-13 03:41:18,777 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-13 03:41:18,777 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-13 03:41:18,777 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,777 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-13 03:41:18,778 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-13 03:41:18,778 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2023-02-13 03:41:18,778 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-13 03:41:18,778 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-13 03:41:18,778 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,779 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,781 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,798 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-13 03:41:18,798 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-13 03:41:18,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,799 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,799 INFO L229 MonitoredProcess]: Starting monitored process 14 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,804 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-02-13 03:41:18,807 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:41:18,807 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:41:18,816 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:41:18,816 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-13 03:41:18,831 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (14)] Ended with exit code 0 [2023-02-13 03:41:18,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,833 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,834 INFO L229 MonitoredProcess]: Starting monitored process 15 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,836 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-02-13 03:41:18,836 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:41:18,836 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:41:18,848 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:41:18,848 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-13 03:41:18,864 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-02-13 03:41:18,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,865 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,866 INFO L229 MonitoredProcess]: Starting monitored process 16 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,869 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-02-13 03:41:18,869 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:41:18,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:41:18,911 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-02-13 03:41:18,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:41:18,912 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:18,912 INFO L229 MonitoredProcess]: Starting monitored process 17 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:18,915 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-02-13 03:41:18,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-13 03:41:18,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:41:18,952 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-13 03:41:18,954 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-02-13 03:41:18,954 INFO L210 LassoAnalysis]: Preferences: [2023-02-13 03:41:18,954 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-13 03:41:18,954 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-13 03:41:18,954 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-13 03:41:18,954 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-13 03:41:18,954 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:18,954 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-13 03:41:18,955 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-13 03:41:18,955 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration5_Loop [2023-02-13 03:41:18,955 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-13 03:41:18,955 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-13 03:41:18,955 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,958 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,960 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-13 03:41:18,998 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-13 03:41:18,999 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-13 03:41:18,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:18,999 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:19,000 INFO L229 MonitoredProcess]: Starting monitored process 18 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:19,004 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-02-13 03:41:19,006 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-13 03:41:19,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-13 03:41:19,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-13 03:41:19,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-13 03:41:19,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-13 03:41:19,013 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-13 03:41:19,013 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-13 03:41:19,019 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-13 03:41:19,035 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-02-13 03:41:19,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:19,036 INFO L229 MonitoredProcess]: Starting monitored process 19 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:19,037 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-02-13 03:41:19,038 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-13 03:41:19,042 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-13 03:41:19,042 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-13 03:41:19,042 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-13 03:41:19,042 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-13 03:41:19,044 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-13 03:41:19,044 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-13 03:41:19,046 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-13 03:41:19,061 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2023-02-13 03:41:19,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:19,062 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:19,063 INFO L229 MonitoredProcess]: Starting monitored process 20 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:19,066 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-02-13 03:41:19,067 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2023-02-13 03:41:19,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-13 03:41:19,071 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-13 03:41:19,072 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-13 03:41:19,072 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-13 03:41:19,072 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-13 03:41:19,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-13 03:41:19,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-13 03:41:19,078 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-13 03:41:19,080 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-13 03:41:19,080 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-13 03:41:19,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:41:19,080 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:41:19,081 INFO L229 MonitoredProcess]: Starting monitored process 21 with /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-02-13 03:41:19,088 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-02-13 03:41:19,088 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-13 03:41:19,088 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-13 03:41:19,088 INFO L513 LassoAnalysis]: Proved termination. [2023-02-13 03:41:19,088 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x2~0#1) = 1*ULTIMATE.start_main_~x2~0#1 Supporting invariants [] [2023-02-13 03:41:19,107 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2023-02-13 03:41:19,107 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-13 03:41:19,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:41:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:41:19,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-13 03:41:19,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 03:41:19,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:41:19,133 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-13 03:41:19,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 03:41:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-13 03:41:19,135 INFO L100 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2023-02-13 03:41:19,135 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-13 03:41:19,135 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand 14 states and 17 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:19,143 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand 14 states and 17 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 16 states and 19 transitions. Complement of second has 4 states. [2023-02-13 03:41:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-13 03:41:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-13 03:41:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2023-02-13 03:41:19,144 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 1 letters. [2023-02-13 03:41:19,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-13 03:41:19,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 3 letters. Loop has 1 letters. [2023-02-13 03:41:19,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-13 03:41:19,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 2 letters. Loop has 2 letters. [2023-02-13 03:41:19,145 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-13 03:41:19,146 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 19 transitions. [2023-02-13 03:41:19,146 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-13 03:41:19,146 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 0 states and 0 transitions. [2023-02-13 03:41:19,146 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-13 03:41:19,146 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-13 03:41:19,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-13 03:41:19,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-13 03:41:19,147 INFO L220 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-13 03:41:19,147 INFO L242 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-13 03:41:19,147 INFO L426 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-13 03:41:19,147 INFO L333 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-02-13 03:41:19,147 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-13 03:41:19,147 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-13 03:41:19,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-13 03:41:19,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.02 03:41:19 BasicIcfg [2023-02-13 03:41:19,153 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-13 03:41:19,154 INFO L158 Benchmark]: Toolchain (without parser) took 2174.34ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.0GB in the end (delta: 98.2MB). Peak memory consumption was 90.6MB. Max. memory is 42.9GB. [2023-02-13 03:41:19,154 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 2.1GB. Free memory is still 2.1GB. There was no memory consumed. Max. memory is 42.9GB. [2023-02-13 03:41:19,154 INFO L158 Benchmark]: CACSL2BoogieTranslator took 122.72ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. [2023-02-13 03:41:19,154 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.99ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 42.9GB. [2023-02-13 03:41:19,155 INFO L158 Benchmark]: Boogie Preprocessor took 18.02ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. [2023-02-13 03:41:19,155 INFO L158 Benchmark]: RCFGBuilder took 246.52ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. [2023-02-13 03:41:19,155 INFO L158 Benchmark]: BlockEncodingV2 took 63.17ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 42.9GB. [2023-02-13 03:41:19,155 INFO L158 Benchmark]: TraceAbstraction took 18.89ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. [2023-02-13 03:41:19,155 INFO L158 Benchmark]: BuchiAutomizer took 1664.37ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.0GB in the end (delta: 68.1MB). Peak memory consumption was 57.0MB. Max. memory is 42.9GB. [2023-02-13 03:41:19,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 9 locations, 12 edges - StatisticsResult: Encoded RCFG 3 locations, 4 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 2.1GB. Free memory is still 2.1GB. There was no memory consumed. Max. memory is 42.9GB. * CACSL2BoogieTranslator took 122.72ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. * Boogie Procedure Inliner took 33.99ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 42.9GB. * Boogie Preprocessor took 18.02ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. * RCFGBuilder took 246.52ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. * BlockEncodingV2 took 63.17ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 42.9GB. * TraceAbstraction took 18.89ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. * BuchiAutomizer took 1664.37ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.0GB in the end (delta: 68.1MB). Peak memory consumption was 57.0MB. Max. memory is 42.9GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - AllSpecificationsHoldResult: All specifications hold We were not able to verify any specifiation because the program does not contain any specification. - StatisticsResult: Constructed decomposition of program Your program was decomposed into 5 terminating modules (3 trivial, 0 deterministic, 2 nondeterministic). One nondeterministic module has affine ranking function -2 * x1 + 21 and consists of 3 locations. One nondeterministic module has affine ranking function x2 and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 6 iterations. TraceHistogramMax:9. Analysis of lassos took 1.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 9 mSDtfsCounter, 47 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI3 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax197 hnf100 lsp40 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 24ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-13 03:41:19,177 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2023-02-13 03:41:19,401 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-02-13 03:41:19,603 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-13 03:41:19,801 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-13 03:41:20,003 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (1)] Ended with exit code 0 Received shutdown request...