YES This is Ultimate 0.2.2-dev-e7f90c1-m [2023-02-13 03:40:30,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-13 03:40:30,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-13 03:40:30,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-13 03:40:30,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-13 03:40:30,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-13 03:40:30,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-13 03:40:30,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-13 03:40:30,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-13 03:40:30,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-13 03:40:30,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-13 03:40:30,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-13 03:40:30,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-13 03:40:30,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-13 03:40:30,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-13 03:40:30,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-13 03:40:30,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-13 03:40:30,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-13 03:40:30,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-13 03:40:30,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-13 03:40:30,902 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2023-02-13 03:40:30,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-13 03:40:30,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-13 03:40:30,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-13 03:40:30,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-13 03:40:30,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-13 03:40:30,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-13 03:40:30,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-13 03:40:30,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-13 03:40:30,907 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-13 03:40:30,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-13 03:40:30,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-13 03:40:30,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-13 03:40:30,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-13 03:40:30,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-13 03:40:30,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-13 03:40:30,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-13 03:40:30,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-13 03:40:30,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-13 03:40:30,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-13 03:40:30,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-13 03:40:30,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-13 03:40:30,911 INFO L101 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/Ultimate/./../termcomp2017.epf [2023-02-13 03:40:30,922 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-13 03:40:30,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-13 03:40:30,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-13 03:40:30,923 INFO L138 SettingsManager]: * Rewrite not-equals=true [2023-02-13 03:40:30,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-13 03:40:30,923 INFO L138 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE [2023-02-13 03:40:30,923 INFO L138 SettingsManager]: * Use SBE=true [2023-02-13 03:40:30,924 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-13 03:40:30,924 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-13 03:40:30,924 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-13 03:40:30,924 INFO L138 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION [2023-02-13 03:40:30,924 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-13 03:40:30,924 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-13 03:40:30,924 INFO L138 SettingsManager]: * Construct termination proof for TermComp=true [2023-02-13 03:40:30,924 INFO L138 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:30,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-13 03:40:30,924 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-13 03:40:30,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-13 03:40:30,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-13 03:40:30,925 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-13 03:40:30,925 INFO L138 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE [2023-02-13 03:40:30,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-13 03:40:30,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-13 03:40:30,925 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2023-02-13 03:40:30,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2023-02-13 03:40:30,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-13 03:40:30,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-13 03:40:30,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-13 03:40:30,925 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-02-13 03:40:31,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-13 03:40:31,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-13 03:40:31,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-13 03:40:31,089 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-13 03:40:31,090 INFO L275 PluginConnector]: CDTParser initialized [2023-02-13 03:40:31,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c [2023-02-13 03:40:31,125 INFO L220 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/302a6cb6e24744009e614ee4158f0751/FLAG53a71877c [2023-02-13 03:40:31,445 INFO L306 CDTParser]: Found 1 translation units. [2023-02-13 03:40:31,445 INFO L160 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c [2023-02-13 03:40:31,448 INFO L349 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/302a6cb6e24744009e614ee4158f0751/FLAG53a71877c [2023-02-13 03:40:31,456 INFO L357 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/302a6cb6e24744009e614ee4158f0751 [2023-02-13 03:40:31,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-13 03:40:31,458 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. [2023-02-13 03:40:31,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-13 03:40:31,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-13 03:40:31,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-13 03:40:31,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46f90fca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31, skipping insertion in model container [2023-02-13 03:40:31,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-13 03:40:31,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-13 03:40:31,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 03:40:31,582 INFO L203 MainTranslator]: Completed pre-run [2023-02-13 03:40:31,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-13 03:40:31,594 INFO L208 MainTranslator]: Completed translation [2023-02-13 03:40:31,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31 WrapperNode [2023-02-13 03:40:31,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-13 03:40:31,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-13 03:40:31,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-13 03:40:31,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-13 03:40:31,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,635 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2023-02-13 03:40:31,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-13 03:40:31,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-13 03:40:31,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-13 03:40:31,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-13 03:40:31,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,642 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,643 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,646 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-13 03:40:31,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-13 03:40:31,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-13 03:40:31,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-13 03:40:31,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 [2023-02-13 03:40:31,658 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:31,665 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 03:40:31,667 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 03:40:31,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-13 03:40:31,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-13 03:40:31,747 INFO L234 CfgBuilder]: Building ICFG [2023-02-13 03:40:31,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-13 03:40:31,802 INFO L275 CfgBuilder]: Performing block encoding [2023-02-13 03:40:31,811 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-13 03:40:31,812 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-13 03:40:31,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 03:40:31 BoogieIcfgContainer [2023-02-13 03:40:31,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-13 03:40:31,815 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- [2023-02-13 03:40:31,815 INFO L271 PluginConnector]: Initializing BlockEncodingV2... [2023-02-13 03:40:31,817 INFO L275 PluginConnector]: BlockEncodingV2 initialized [2023-02-13 03:40:31,818 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 03:40:31" (1/1) ... [2023-02-13 03:40:31,829 INFO L313 BlockEncoder]: Initial Icfg 8 locations, 10 edges [2023-02-13 03:40:31,830 INFO L258 BlockEncoder]: Using Remove infeasible edges [2023-02-13 03:40:31,830 INFO L263 BlockEncoder]: Using Maximize final states [2023-02-13 03:40:31,830 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false [2023-02-13 03:40:31,830 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE [2023-02-13 03:40:31,831 INFO L296 BlockEncoder]: Using Remove sink states [2023-02-13 03:40:31,833 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true [2023-02-13 03:40:31,833 INFO L179 BlockEncoder]: Using Rewrite not-equals [2023-02-13 03:40:31,852 INFO L185 BlockEncoder]: Using Use SBE [2023-02-13 03:40:31,863 INFO L200 BlockEncoder]: SBE split 1 edges [2023-02-13 03:40:31,866 INFO L70 emoveInfeasibleEdges]: Removed 1 edges and 0 locations because of local infeasibility [2023-02-13 03:40:31,867 INFO L71 MaximizeFinalStates]: 0 new accepting states [2023-02-13 03:40:31,871 INFO L101 BaseMinimizeStates]: Removed 6 edges and 3 locations by large block encoding [2023-02-13 03:40:31,872 INFO L70 RemoveSinkStates]: Removed 3 edges and 2 locations by removing sink states [2023-02-13 03:40:31,873 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2023-02-13 03:40:31,873 INFO L71 MaximizeFinalStates]: 0 new accepting states [2023-02-13 03:40:31,874 INFO L101 BaseMinimizeStates]: Removed 2 edges and 1 locations by large block encoding [2023-02-13 03:40:31,874 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2023-02-13 03:40:31,874 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility [2023-02-13 03:40:31,875 INFO L71 MaximizeFinalStates]: 0 new accepting states [2023-02-13 03:40:31,875 INFO L101 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding [2023-02-13 03:40:31,875 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states [2023-02-13 03:40:31,875 INFO L313 BlockEncoder]: Encoded RCFG 2 locations, 3 edges [2023-02-13 03:40:31,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 13.02 03:40:31 BasicIcfg [2023-02-13 03:40:31,875 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- [2023-02-13 03:40:31,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-13 03:40:31,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-13 03:40:31,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-13 03:40:31,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.02 03:40:31" (1/4) ... [2023-02-13 03:40:31,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6568daee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 03:40:31, skipping insertion in model container [2023-02-13 03:40:31,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (2/4) ... [2023-02-13 03:40:31,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6568daee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.02 03:40:31, skipping insertion in model container [2023-02-13 03:40:31,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 03:40:31" (3/4) ... [2023-02-13 03:40:31,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6568daee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.02 03:40:31, skipping insertion in model container [2023-02-13 03:40:31,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 13.02 03:40:31" (4/4) ... [2023-02-13 03:40:31,880 INFO L111 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2023-02-13 03:40:31,889 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2023-02-13 03:40:31,889 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 0 error locations. [2023-02-13 03:40:31,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6568daee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.02 03:40:31, skipping insertion in model container [2023-02-13 03:40:31,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-13 03:40:31,891 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-13 03:40:31,891 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-13 03:40:31,892 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-13 03:40:31,893 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-13 03:40:31,893 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.02 03:40:31" (1/4) ... [2023-02-13 03:40:31,893 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ee8650e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.02 03:40:31, skipping insertion in model container [2023-02-13 03:40:31,893 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-13 03:40:31,893 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.02 03:40:31" (2/4) ... [2023-02-13 03:40:31,893 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ee8650e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.02 03:40:31, skipping insertion in model container [2023-02-13 03:40:31,894 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-13 03:40:31,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.02 03:40:31" (3/4) ... [2023-02-13 03:40:31,894 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5ee8650e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.02 03:40:31, skipping insertion in model container [2023-02-13 03:40:31,894 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-13 03:40:31,894 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 13.02 03:40:31" (4/4) ... [2023-02-13 03:40:31,895 INFO L322 chiAutomizerObserver]: Analyzing ICFG theBenchmark.c_BEv2 [2023-02-13 03:40:31,920 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2023-02-13 03:40:31,921 INFO L302 stractBuchiCegarLoop]: Hoare is true [2023-02-13 03:40:31,921 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-13 03:40:31,921 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-13 03:40:31,921 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-13 03:40:31,921 INFO L306 stractBuchiCegarLoop]: Difference is false [2023-02-13 03:40:31,921 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-13 03:40:31,921 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-13 03:40:31,923 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 1 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 03:40:31,932 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-13 03:40:31,932 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-13 03:40:31,932 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-13 03:40:31,935 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2023-02-13 03:40:31,935 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-13 03:40:31,935 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-13 03:40:31,936 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 1 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 03:40:31,936 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-13 03:40:31,936 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-13 03:40:31,936 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-13 03:40:31,936 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1] [2023-02-13 03:40:31,936 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-13 03:40:31,939 INFO L733 eck$LassoCheckResult]: Stem: 2#ULTIMATE.startENTRYtrue [42] ULTIMATE.startENTRY-->L21-2: Formula: (< 0 |v_ULTIMATE.start_main_~x~0#1_11|) InVars {} OutVars{ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_11|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_10|, ULTIMATE.start_main_#t~nondet0#1=|v_ULTIMATE.start_main_#t~nondet0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_main_#t~nondet0#1] 3#L21-2true [2023-02-13 03:40:31,939 INFO L735 eck$LassoCheckResult]: Loop: 3#L21-2true [37] L21-2-->L21-2: Formula: (and (= (+ (- 1) |v_ULTIMATE.start_main_~x~0#1_8|) |v_ULTIMATE.start_main_~x~0#1_7|) (> |v_ULTIMATE.start_main_~x~0#1_8| 0)) InVars {ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_8|} OutVars{ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0#1] 3#L21-2true [2023-02-13 03:40:31,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:40:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 1 times [2023-02-13 03:40:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:40:31,948 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251225659] [2023-02-13 03:40:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:40:31,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:40:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:40:31,992 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:40:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:40:32,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:40:32,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:40:32,003 INFO L85 PathProgramCache]: Analyzing trace with hash 68, now seen corresponding path program 1 times [2023-02-13 03:40:32,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:40:32,004 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821329429] [2023-02-13 03:40:32,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:40:32,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:40:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:40:32,008 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:40:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:40:32,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:40:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:40:32,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2300, now seen corresponding path program 1 times [2023-02-13 03:40:32,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:40:32,012 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998940731] [2023-02-13 03:40:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:40:32,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:40:32,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:40:32,015 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:40:32,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:40:32,017 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:40:32,044 INFO L210 LassoAnalysis]: Preferences: [2023-02-13 03:40:32,044 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-13 03:40:32,045 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-13 03:40:32,045 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-13 03:40:32,045 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-13 03:40:32,045 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,045 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-13 03:40:32,045 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-13 03:40:32,045 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2023-02-13 03:40:32,045 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-13 03:40:32,045 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-13 03:40:32,053 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 03:40:32,063 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 03:40:32,066 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 03:40:32,093 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-13 03:40:32,094 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-13 03:40:32,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,095 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,096 INFO L229 MonitoredProcess]: Starting monitored process 2 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 03:40:32,097 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2023-02-13 03:40:32,098 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:40:32,098 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:40:32,129 INFO L540 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2023-02-13 03:40:32,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,130 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,131 INFO L229 MonitoredProcess]: Starting monitored process 3 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 03:40:32,132 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2023-02-13 03:40:32,132 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-13 03:40:32,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:40:32,166 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-13 03:40:32,168 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2023-02-13 03:40:32,168 INFO L210 LassoAnalysis]: Preferences: [2023-02-13 03:40:32,168 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-13 03:40:32,168 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-13 03:40:32,168 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-13 03:40:32,168 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-13 03:40:32,169 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:40:32,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-13 03:40:32,169 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-13 03:40:32,169 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration1_Loop [2023-02-13 03:40:32,169 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-13 03:40:32,169 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-13 03:40:32,171 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 03:40:32,177 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 03:40:32,179 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 03:40:32,204 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-13 03:40:32,207 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-13 03:40:32,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:40:32,208 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,208 INFO L229 MonitoredProcess]: Starting monitored process 4 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 03:40:32,209 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2023-02-13 03:40:32,210 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 03:40:32,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-13 03:40:32,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-13 03:40:32,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-13 03:40:32,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-13 03:40:32,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-13 03:40:32,217 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-13 03:40:32,217 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-13 03:40:32,223 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-13 03:40:32,228 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-13 03:40:32,228 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-13 03:40:32,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-13 03:40:32,229 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,229 INFO L229 MonitoredProcess]: Starting monitored process 5 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 03:40:32,231 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2023-02-13 03:40:32,231 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-13 03:40:32,231 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-13 03:40:32,232 INFO L513 LassoAnalysis]: Proved termination. [2023-02-13 03:40:32,232 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-02-13 03:40:32,246 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2023-02-13 03:40:32,248 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-13 03:40:32,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:40:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:40:32,272 WARN L261 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-13 03:40:32,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 03:40:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:40:32,280 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-13 03:40:32,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 03:40:32,280 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 03:40:32,298 INFO L100 LoopCannibalizer]: 1 predicates before loop cannibalization 1 predicates after loop cannibalization [2023-02-13 03:40:32,301 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 03:40:32,302 INFO L69 BuchiDifferenceNCSB]: Start buchiDifferenceNCSB. First operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 1 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) Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 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 03:40:32,331 INFO L73 BuchiDifferenceNCSB]: Finished buchiDifferenceNCSB. First operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 1 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). Second operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 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) Result 6 states and 11 transitions. Complement of second has 4 states. [2023-02-13 03:40:32,337 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 03:40:32,349 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-02-13 03:40:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.0) internal successors, (2), 1 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 03:40:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2023-02-13 03:40:32,353 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 1 letters. [2023-02-13 03:40:32,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-13 03:40:32,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 2 letters. Loop has 1 letters. [2023-02-13 03:40:32,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-13 03:40:32,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 1 letters. Loop has 2 letters. [2023-02-13 03:40:32,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-13 03:40:32,359 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 11 transitions. [2023-02-13 03:40:32,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-13 03:40:32,362 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 11 transitions. [2023-02-13 03:40:32,362 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2023-02-13 03:40:32,362 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2023-02-13 03:40:32,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 11 transitions. [2023-02-13 03:40:32,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-13 03:40:32,363 INFO L220 hiAutomatonCegarLoop]: Abstraction has 6 states and 11 transitions. [2023-02-13 03:40:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 11 transitions. [2023-02-13 03:40:32,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2023-02-13 03:40:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 03:40:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2023-02-13 03:40:32,377 INFO L242 hiAutomatonCegarLoop]: Abstraction has 5 states and 10 transitions. [2023-02-13 03:40:32,377 INFO L426 stractBuchiCegarLoop]: Abstraction has 5 states and 10 transitions. [2023-02-13 03:40:32,378 INFO L333 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-13 03:40:32,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 10 transitions. [2023-02-13 03:40:32,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-13 03:40:32,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-13 03:40:32,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-13 03:40:32,378 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-02-13 03:40:32,378 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-13 03:40:32,378 INFO L733 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY [42] ULTIMATE.startENTRY-->L21-2: Formula: (< 0 |v_ULTIMATE.start_main_~x~0#1_11|) InVars {} OutVars{ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_11|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_10|, ULTIMATE.start_main_#t~nondet0#1=|v_ULTIMATE.start_main_#t~nondet0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_main_#t~nondet0#1] 36#L21-2 [38] L21-2-->L21-2: Formula: (and (= (+ (- 1) |v_ULTIMATE.start_main_~x~0#1_8|) |v_ULTIMATE.start_main_~x~0#1_7|) (< |v_ULTIMATE.start_main_~x~0#1_8| 0)) InVars {ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_8|} OutVars{ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0#1] 37#L21-2 [2023-02-13 03:40:32,379 INFO L735 eck$LassoCheckResult]: Loop: 37#L21-2 [38] L21-2-->L21-2: Formula: (and (= (+ (- 1) |v_ULTIMATE.start_main_~x~0#1_8|) |v_ULTIMATE.start_main_~x~0#1_7|) (< |v_ULTIMATE.start_main_~x~0#1_8| 0)) InVars {ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_8|} OutVars{ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0#1] 37#L21-2 [2023-02-13 03:40:32,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:40:32,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2301, now seen corresponding path program 1 times [2023-02-13 03:40:32,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:40:32,379 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467220126] [2023-02-13 03:40:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:40:32,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:40:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:40:32,396 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 03:40:32,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 03:40:32,396 INFO L335 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467220126] [2023-02-13 03:40:32,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467220126] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-13 03:40:32,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-13 03:40:32,397 ERROR L191 FreeRefinementEngine]: {41#true} [43#(<= 1 |ULTIMATE.start_main_~x~0#1|)] {42#false} [2023-02-13 03:40:32,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-13 03:40:32,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116916099] [2023-02-13 03:40:32,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-13 03:40:32,399 INFO L738 eck$LassoCheckResult]: stem already infeasible [2023-02-13 03:40:32,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:40:32,399 INFO L85 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 1 times [2023-02-13 03:40:32,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:40:32,399 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51474972] [2023-02-13 03:40:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:40:32,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:40:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:40:32,403 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:40:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:40:32,405 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:40:32,414 INFO L210 LassoAnalysis]: Preferences: [2023-02-13 03:40:32,414 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-13 03:40:32,414 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-13 03:40:32,414 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-13 03:40:32,414 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-13 03:40:32,414 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,414 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-13 03:40:32,414 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-13 03:40:32,414 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration2_Loop [2023-02-13 03:40:32,414 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-13 03:40:32,415 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-13 03:40:32,415 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 03:40:32,416 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 03:40:32,418 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 03:40:32,437 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-13 03:40:32,437 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-13 03:40:32,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,438 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,439 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 03:40:32,441 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:40:32,441 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:40:32,453 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 03:40:32,454 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:40:32,454 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 03:40:32,468 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 03:40:32,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,469 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,470 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 03:40:32,472 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 03:40:32,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:40:32,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:40:32,483 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:40:32,483 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 03:40:32,503 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 03:40:32,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,504 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,505 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 03:40:32,506 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 03:40:32,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:40:32,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:40:32,543 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 03:40:32,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,543 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,545 INFO L229 MonitoredProcess]: Starting monitored process 9 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 03:40:32,547 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2023-02-13 03:40:32,547 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-13 03:40:32,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:40:32,580 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:40:32,581 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=-1} Honda state: {ULTIMATE.start_main_~x~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=-1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [6, 1, 9] Nus: [0, 1] [2023-02-13 03:40:32,601 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2023-02-13 03:40:32,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 03:40:32,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-13 03:40:32,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-13 03:40:32,604 INFO L87 Difference]: Start difference. First operand 5 states and 10 transitions. cyclomatic complexity: 7 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 03:40:32,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 03:40:32,612 INFO L93 Difference]: Finished difference Result 5 states and 8 transitions. [2023-02-13 03:40:32,612 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5 states and 8 transitions. [2023-02-13 03:40:32,612 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-13 03:40:32,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5 states to 5 states and 8 transitions. [2023-02-13 03:40:32,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2023-02-13 03:40:32,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2023-02-13 03:40:32,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 8 transitions. [2023-02-13 03:40:32,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-13 03:40:32,613 INFO L220 hiAutomatonCegarLoop]: Abstraction has 5 states and 8 transitions. [2023-02-13 03:40:32,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 8 transitions. [2023-02-13 03:40:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2023-02-13 03:40:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 03:40:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 8 transitions. [2023-02-13 03:40:32,613 INFO L242 hiAutomatonCegarLoop]: Abstraction has 5 states and 8 transitions. [2023-02-13 03:40:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-13 03:40:32,614 INFO L426 stractBuchiCegarLoop]: Abstraction has 5 states and 8 transitions. [2023-02-13 03:40:32,614 INFO L333 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-13 03:40:32,614 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 8 transitions. [2023-02-13 03:40:32,615 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2023-02-13 03:40:32,615 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-13 03:40:32,615 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-13 03:40:32,615 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-13 03:40:32,615 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-13 03:40:32,615 INFO L733 eck$LassoCheckResult]: Stem: 51#ULTIMATE.startENTRY [42] ULTIMATE.startENTRY-->L21-2: Formula: (< 0 |v_ULTIMATE.start_main_~x~0#1_11|) InVars {} OutVars{ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_11|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_10|, ULTIMATE.start_main_#t~nondet0#1=|v_ULTIMATE.start_main_#t~nondet0#1_5|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_main_#t~nondet0#1] 52#L21-2 [37] L21-2-->L21-2: Formula: (and (= (+ (- 1) |v_ULTIMATE.start_main_~x~0#1_8|) |v_ULTIMATE.start_main_~x~0#1_7|) (> |v_ULTIMATE.start_main_~x~0#1_8| 0)) InVars {ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_8|} OutVars{ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0#1] 55#L21-2 [38] L21-2-->L21-2: Formula: (and (= (+ (- 1) |v_ULTIMATE.start_main_~x~0#1_8|) |v_ULTIMATE.start_main_~x~0#1_7|) (< |v_ULTIMATE.start_main_~x~0#1_8| 0)) InVars {ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_8|} OutVars{ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0#1] 53#L21-2 [2023-02-13 03:40:32,615 INFO L735 eck$LassoCheckResult]: Loop: 53#L21-2 [38] L21-2-->L21-2: Formula: (and (= (+ (- 1) |v_ULTIMATE.start_main_~x~0#1_8|) |v_ULTIMATE.start_main_~x~0#1_7|) (< |v_ULTIMATE.start_main_~x~0#1_8| 0)) InVars {ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_8|} OutVars{ULTIMATE.start_main_~x~0#1=|v_ULTIMATE.start_main_~x~0#1_7|} AuxVars[] AssignedVars[ULTIMATE.start_main_~x~0#1] 53#L21-2 [2023-02-13 03:40:32,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:40:32,615 INFO L85 PathProgramCache]: Analyzing trace with hash 71338, now seen corresponding path program 1 times [2023-02-13 03:40:32,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:40:32,616 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15240618] [2023-02-13 03:40:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:40:32,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:40:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:40:32,628 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 03:40:32,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-13 03:40:32,630 INFO L335 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15240618] [2023-02-13 03:40:32,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15240618] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-13 03:40:32,630 INFO L335 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994301652] [2023-02-13 03:40:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:40:32,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-13 03:40:32,632 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,634 INFO L229 MonitoredProcess]: Starting monitored process 10 with /export/starexec/sandbox/solver/Ultimate/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-13 03:40:32,636 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-13 03:40:32,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-13 03:40:32,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-13 03:40:32,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-13 03:40:32,693 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 03:40:32,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-13 03:40:32,704 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 03:40:32,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994301652] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-13 03:40:32,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-13 03:40:32,705 ERROR L197 FreeRefinementEngine]: {57#true} [59#(<= 1 |ULTIMATE.start_main_~x~0#1|), 60#(<= 0 |ULTIMATE.start_main_~x~0#1|)] {58#false} [2023-02-13 03:40:32,705 ERROR L197 FreeRefinementEngine]: {57#true} [59#(<= 1 |ULTIMATE.start_main_~x~0#1|), 60#(<= 0 |ULTIMATE.start_main_~x~0#1|)] {58#false} [2023-02-13 03:40:32,705 ERROR L197 FreeRefinementEngine]: {57#true} [59#(<= 1 |ULTIMATE.start_main_~x~0#1|), 60#(<= 0 |ULTIMATE.start_main_~x~0#1|)] {58#false} [2023-02-13 03:40:32,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-02-13 03:40:32,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107053126] [2023-02-13 03:40:32,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-13 03:40:32,705 INFO L738 eck$LassoCheckResult]: stem already infeasible [2023-02-13 03:40:32,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-13 03:40:32,706 INFO L85 PathProgramCache]: Analyzing trace with hash 69, now seen corresponding path program 2 times [2023-02-13 03:40:32,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-13 03:40:32,706 INFO L335 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335511754] [2023-02-13 03:40:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-13 03:40:32,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-13 03:40:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:40:32,709 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-13 03:40:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-13 03:40:32,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-13 03:40:32,716 INFO L210 LassoAnalysis]: Preferences: [2023-02-13 03:40:32,716 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-13 03:40:32,716 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-13 03:40:32,717 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-13 03:40:32,717 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-13 03:40:32,717 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,717 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-13 03:40:32,717 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-13 03:40:32,717 INFO L133 ssoRankerPreferences]: Filename of dumped script: theBenchmark.c_BEv2_Iteration3_Loop [2023-02-13 03:40:32,717 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-13 03:40:32,717 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-13 03:40:32,717 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 03:40:32,719 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 03:40:32,721 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 03:40:32,738 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-13 03:40:32,738 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-13 03:40:32,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,738 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,739 INFO L229 MonitoredProcess]: Starting monitored process 11 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 03:40:32,742 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2023-02-13 03:40:32,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:40:32,744 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:40:32,755 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:40:32,756 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_4=0} Honda state: {v_rep~unnamed0~0~false_4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-13 03:40:32,771 INFO L540 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-13 03:40:32,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,771 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,772 INFO L229 MonitoredProcess]: Starting monitored process 12 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 03:40:32,773 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2023-02-13 03:40:32,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:40:32,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:40:32,810 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2023-02-13 03:40:32,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,811 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,812 INFO L229 MonitoredProcess]: Starting monitored process 13 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 03:40:32,812 INFO L327 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2023-02-13 03:40:32,814 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-13 03:40:32,814 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:40:32,829 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:40:32,829 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=-1} Honda state: {ULTIMATE.start_main_~x~0#1=-1} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=0}, {ULTIMATE.start_main_~x~0#1=-1}, {ULTIMATE.start_main_~x~0#1=0}] Lambdas: [6, 1, 9] Nus: [0, 1] [2023-02-13 03:40:32,862 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2023-02-13 03:40:32,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 [2023-02-13 03:40:32,863 INFO L189 MonitoredProcess]: No working directory specified, using /export/starexec/sandbox/solver/Ultimate/z3 [2023-02-13 03:40:32,864 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 03:40:32,865 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 03:40:32,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-13 03:40:32,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-13 03:40:32,873 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-13 03:40:32,874 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_4=1} Honda state: {v_rep~unnamed0~0~true_4=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-13 03:40:32,911 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 03:40:32,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-13 03:40:32,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-13 03:40:32,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-13 03:40:32,914 INFO L87 Difference]: Start difference. First operand 5 states and 8 transitions. cyclomatic complexity: 5 Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 03:40:32,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-13 03:40:32,927 INFO L93 Difference]: Finished difference Result 3 states and 3 transitions. [2023-02-13 03:40:32,927 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 3 states and 3 transitions. [2023-02-13 03:40:32,928 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-13 03:40:32,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 3 states to 0 states and 0 transitions. [2023-02-13 03:40:32,929 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-13 03:40:32,929 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-13 03:40:32,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-13 03:40:32,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-13 03:40:32,930 INFO L220 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-13 03:40:32,930 INFO L242 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-13 03:40:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-13 03:40:32,932 INFO L426 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-13 03:40:32,932 INFO L333 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-13 03:40:32,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-13 03:40:32,933 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-13 03:40:32,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-13 03:40:32,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.02 03:40:32 BasicIcfg [2023-02-13 03:40:32,942 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-13 03:40:32,943 INFO L158 Benchmark]: Toolchain (without parser) took 1485.05ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 36.8MB). Peak memory consumption was 32.0MB. Max. memory is 42.9GB. [2023-02-13 03:40:32,944 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 03:40:32,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 135.15ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. [2023-02-13 03:40:32,945 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.67ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 3.2MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. [2023-02-13 03:40:32,945 INFO L158 Benchmark]: Boogie Preprocessor took 11.14ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 954.2kB). There was no memory consumed. Max. memory is 42.9GB. [2023-02-13 03:40:32,945 INFO L158 Benchmark]: RCFGBuilder took 167.09ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. [2023-02-13 03:40:32,945 INFO L158 Benchmark]: BlockEncodingV2 took 60.49ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 42.9GB. [2023-02-13 03:40:32,946 INFO L158 Benchmark]: TraceAbstraction took 13.41ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 42.9GB. [2023-02-13 03:40:32,946 INFO L158 Benchmark]: BuchiAutomizer took 1051.94ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 5.1MB). There was no memory consumed. Max. memory is 42.9GB. [2023-02-13 03:40:32,948 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 8 locations, 10 edges - StatisticsResult: Encoded RCFG 2 locations, 3 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 135.15ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. * Boogie Procedure Inliner took 39.67ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 3.2MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. * Boogie Preprocessor took 11.14ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 954.2kB). There was no memory consumed. Max. memory is 42.9GB. * RCFGBuilder took 167.09ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 42.9GB. * BlockEncodingV2 took 60.49ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 4.3MB). There was no memory consumed. Max. memory is 42.9GB. * TraceAbstraction took 13.41ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 42.9GB. * BuchiAutomizer took 1051.94ms. Allocated memory is still 2.1GB. Free memory was 2.1GB in the beginning and 2.1GB in the end (delta: 5.1MB). There was no memory consumed. 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 3 terminating modules (2 trivial, 0 deterministic, 1 nondeterministic). One nondeterministic module has affine ranking function x and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.0s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 0.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN2 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital10 mio100 ax220 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 24ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 1 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 03:40:32,971 INFO L552 MonitoredProcess]: [MP /export/starexec/sandbox/solver/Ultimate/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-13 03:40:33,202 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...