/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 08:11:01,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 08:11:01,297 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 08:11:01,325 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 08:11:01,326 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 08:11:01,326 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 08:11:01,327 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 08:11:01,327 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 08:11:01,327 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 08:11:01,330 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 08:11:01,330 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 08:11:01,330 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 08:11:01,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 08:11:01,331 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 08:11:01,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 08:11:01,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 08:11:01,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 08:11:01,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 08:11:01,332 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 08:11:01,332 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 08:11:01,332 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 08:11:01,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 08:11:01,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 08:11:01,333 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 08:11:01,333 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 08:11:01,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 08:11:01,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 08:11:01,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 08:11:01,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 08:11:01,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 08:11:01,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 08:11:01,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 08:11:01,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 08:11:01,336 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-11-30 08:11:01,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 08:11:01,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 08:11:01,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 08:11:01,550 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 08:11:01,551 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 08:11:01,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-11-30 08:11:02,599 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 08:11:02,770 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 08:11:02,771 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_84-list2_racing2.i [2023-11-30 08:11:02,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd22d9b99/1e9c066340154d3abfbffcd28c474902/FLAG90474b855 [2023-11-30 08:11:02,792 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd22d9b99/1e9c066340154d3abfbffcd28c474902 [2023-11-30 08:11:02,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 08:11:02,794 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 08:11:02,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 08:11:02,795 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 08:11:02,798 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 08:11:02,798 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 08:11:02" (1/1) ... [2023-11-30 08:11:02,799 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc62f6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:02, skipping insertion in model container [2023-11-30 08:11:02,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 08:11:02" (1/1) ... [2023-11-30 08:11:02,834 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 08:11:03,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 08:11:03,155 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 08:11:03,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 08:11:03,257 INFO L206 MainTranslator]: Completed translation [2023-11-30 08:11:03,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03 WrapperNode [2023-11-30 08:11:03,258 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 08:11:03,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 08:11:03,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 08:11:03,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 08:11:03,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,276 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,316 INFO L138 Inliner]: procedures = 280, calls = 99, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 454 [2023-11-30 08:11:03,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 08:11:03,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 08:11:03,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 08:11:03,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 08:11:03,325 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,330 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 08:11:03,359 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 08:11:03,359 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 08:11:03,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 08:11:03,362 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (1/1) ... [2023-11-30 08:11:03,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 08:11:03,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 08:11:03,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 08:11:03,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 08:11:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 08:11:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-30 08:11:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-30 08:11:03,409 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-30 08:11:03,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 08:11:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 08:11:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-30 08:11:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-30 08:11:03,410 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-30 08:11:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 08:11:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 08:11:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-30 08:11:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 08:11:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-30 08:11:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-11-30 08:11:03,410 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-11-30 08:11:03,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 08:11:03,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 08:11:03,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 08:11:03,412 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 08:11:03,547 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 08:11:03,549 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 08:11:04,102 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 08:11:04,146 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 08:11:04,147 INFO L309 CfgBuilder]: Removed 29 assume(true) statements. [2023-11-30 08:11:04,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 08:11:04 BoogieIcfgContainer [2023-11-30 08:11:04,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 08:11:04,150 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 08:11:04,150 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 08:11:04,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 08:11:04,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 08:11:02" (1/3) ... [2023-11-30 08:11:04,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ef34f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 08:11:04, skipping insertion in model container [2023-11-30 08:11:04,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 08:11:03" (2/3) ... [2023-11-30 08:11:04,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ef34f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 08:11:04, skipping insertion in model container [2023-11-30 08:11:04,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 08:11:04" (3/3) ... [2023-11-30 08:11:04,155 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_84-list2_racing2.i [2023-11-30 08:11:04,167 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 08:11:04,167 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-30 08:11:04,167 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 08:11:04,271 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-11-30 08:11:04,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 478 transitions, 995 flow [2023-11-30 08:11:04,736 INFO L124 PetriNetUnfolderBase]: 194/1753 cut-off events. [2023-11-30 08:11:04,737 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-30 08:11:04,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 1753 events. 194/1753 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 11832 event pairs, 0 based on Foata normal form. 0/1477 useless extension candidates. Maximal degree in co-relation 885. Up to 16 conditions per place. [2023-11-30 08:11:04,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 478 transitions, 995 flow [2023-11-30 08:11:04,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 478 transitions, 995 flow [2023-11-30 08:11:04,801 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 08:11:04,806 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b3bb036, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 08:11:04,807 INFO L363 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-30 08:11:04,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 08:11:04,818 INFO L124 PetriNetUnfolderBase]: 3/86 cut-off events. [2023-11-30 08:11:04,818 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 08:11:04,818 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:11:04,819 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:11:04,819 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-30 08:11:04,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:11:04,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1219698559, now seen corresponding path program 1 times [2023-11-30 08:11:04,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:11:04,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221306189] [2023-11-30 08:11:04,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:11:04,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:11:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:11:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:11:05,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:11:05,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221306189] [2023-11-30 08:11:05,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221306189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:11:05,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:11:05,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:11:05,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583056740] [2023-11-30 08:11:05,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:11:05,232 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:11:05,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:11:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:11:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:11:05,253 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 478 [2023-11-30 08:11:05,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 478 transitions, 995 flow. Second operand has 4 states, 4 states have (on average 392.75) internal successors, (1571), 4 states have internal predecessors, (1571), 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) [2023-11-30 08:11:05,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:11:05,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 478 [2023-11-30 08:11:05,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-30 08:11:10,996 INFO L124 PetriNetUnfolderBase]: 8172/38196 cut-off events. [2023-11-30 08:11:10,997 INFO L125 PetriNetUnfolderBase]: For 2316/2316 co-relation queries the response was YES. [2023-11-30 08:11:11,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49548 conditions, 38196 events. 8172/38196 cut-off events. For 2316/2316 co-relation queries the response was YES. Maximal size of possible extension queue 766. Compared 522834 event pairs, 5070 based on Foata normal form. 8082/43034 useless extension candidates. Maximal degree in co-relation 41102. Up to 10483 conditions per place. [2023-11-30 08:11:11,496 INFO L140 encePairwiseOnDemand]: 438/478 looper letters, 54 selfloop transitions, 4 changer transitions 0/445 dead transitions. [2023-11-30 08:11:11,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 445 transitions, 1045 flow [2023-11-30 08:11:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-30 08:11:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-30 08:11:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2050 transitions. [2023-11-30 08:11:11,515 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8577405857740585 [2023-11-30 08:11:11,515 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2050 transitions. [2023-11-30 08:11:11,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2050 transitions. [2023-11-30 08:11:11,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-30 08:11:11,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2050 transitions. [2023-11-30 08:11:11,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 410.0) internal successors, (2050), 5 states have internal predecessors, (2050), 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) [2023-11-30 08:11:11,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 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) [2023-11-30 08:11:11,536 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 478.0) internal successors, (2868), 6 states have internal predecessors, (2868), 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) [2023-11-30 08:11:11,538 INFO L307 CegarLoopForPetriNet]: 435 programPoint places, -4 predicate places. [2023-11-30 08:11:11,538 INFO L500 AbstractCegarLoop]: Abstraction has has 431 places, 445 transitions, 1045 flow [2023-11-30 08:11:11,539 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 392.75) internal successors, (1571), 4 states have internal predecessors, (1571), 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) [2023-11-30 08:11:11,539 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:11:11,540 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:11:11,540 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 08:11:11,540 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-30 08:11:11,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:11:11,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1293580968, now seen corresponding path program 1 times [2023-11-30 08:11:11,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:11:11,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797210102] [2023-11-30 08:11:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:11:11,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:11:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:11:11,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 08:11:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 08:11:11,715 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 08:11:11,715 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 08:11:11,716 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2023-11-30 08:11:11,717 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 31 remaining) [2023-11-30 08:11:11,717 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 31 remaining) [2023-11-30 08:11:11,717 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 31 remaining) [2023-11-30 08:11:11,717 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 31 remaining) [2023-11-30 08:11:11,718 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 31 remaining) [2023-11-30 08:11:11,718 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 31 remaining) [2023-11-30 08:11:11,718 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 31 remaining) [2023-11-30 08:11:11,718 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 31 remaining) [2023-11-30 08:11:11,718 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 31 remaining) [2023-11-30 08:11:11,718 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 31 remaining) [2023-11-30 08:11:11,718 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 31 remaining) [2023-11-30 08:11:11,718 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 31 remaining) [2023-11-30 08:11:11,719 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 31 remaining) [2023-11-30 08:11:11,719 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 31 remaining) [2023-11-30 08:11:11,719 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 31 remaining) [2023-11-30 08:11:11,719 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 31 remaining) [2023-11-30 08:11:11,719 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 31 remaining) [2023-11-30 08:11:11,719 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 31 remaining) [2023-11-30 08:11:11,719 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 31 remaining) [2023-11-30 08:11:11,719 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 31 remaining) [2023-11-30 08:11:11,719 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 31 remaining) [2023-11-30 08:11:11,720 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 31 remaining) [2023-11-30 08:11:11,720 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 31 remaining) [2023-11-30 08:11:11,720 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 31 remaining) [2023-11-30 08:11:11,720 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 31 remaining) [2023-11-30 08:11:11,720 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 31 remaining) [2023-11-30 08:11:11,720 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 31 remaining) [2023-11-30 08:11:11,720 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 31 remaining) [2023-11-30 08:11:11,720 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 31 remaining) [2023-11-30 08:11:11,721 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location t3_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 31 remaining) [2023-11-30 08:11:11,721 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 08:11:11,721 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-30 08:11:11,723 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 08:11:11,723 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 08:11:11,798 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-30 08:11:11,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 662 places, 740 transitions, 1564 flow [2023-11-30 08:11:14,178 INFO L124 PetriNetUnfolderBase]: 1235/8476 cut-off events. [2023-11-30 08:11:14,179 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-11-30 08:11:14,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9124 conditions, 8476 events. 1235/8476 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 81370 event pairs, 22 based on Foata normal form. 0/7023 useless extension candidates. Maximal degree in co-relation 5242. Up to 192 conditions per place. [2023-11-30 08:11:14,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 662 places, 740 transitions, 1564 flow [2023-11-30 08:11:14,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 662 places, 740 transitions, 1564 flow [2023-11-30 08:11:14,488 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 08:11:14,489 INFO L362 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b3bb036, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 08:11:14,489 INFO L363 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2023-11-30 08:11:14,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 08:11:14,493 INFO L124 PetriNetUnfolderBase]: 3/86 cut-off events. [2023-11-30 08:11:14,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 08:11:14,493 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 08:11:14,493 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 08:11:14,493 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [t2_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, t2_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2023-11-30 08:11:14,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 08:11:14,493 INFO L85 PathProgramCache]: Analyzing trace with hash 25999067, now seen corresponding path program 1 times [2023-11-30 08:11:14,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 08:11:14,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794689840] [2023-11-30 08:11:14,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 08:11:14,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 08:11:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 08:11:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 08:11:14,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 08:11:14,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794689840] [2023-11-30 08:11:14,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794689840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 08:11:14,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 08:11:14,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-30 08:11:14,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677713184] [2023-11-30 08:11:14,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 08:11:14,757 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-30 08:11:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 08:11:14,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-30 08:11:14,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-30 08:11:14,760 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 591 out of 740 [2023-11-30 08:11:14,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 662 places, 740 transitions, 1564 flow. Second operand has 4 states, 4 states have (on average 592.75) internal successors, (2371), 4 states have internal predecessors, (2371), 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) [2023-11-30 08:11:14,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 08:11:14,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 591 of 740 [2023-11-30 08:11:14,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand