/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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 -i ../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:19:32,873 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:19:32,943 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 [2023-12-09 15:19:32,966 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:19:32,967 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:19:32,967 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:19:32,968 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:19:32,968 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:19:32,968 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:19:32,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:19:32,972 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:19:32,972 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:19:32,972 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:19:32,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:19:32,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:19:32,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:19:32,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:19:32,973 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:19:32,973 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:19:32,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:19:32,974 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:19:32,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:19:32,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:19:32,975 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:19:32,975 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:19:32,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:19:32,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:19:32,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:19:32,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:19:32,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:19:32,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:19:32,976 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:19:32,976 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:19:32,977 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:19:33,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:19:33,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:19:33,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:19:33,168 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:19:33,169 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:19:33,170 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2023-12-09 15:19:34,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:19:34,319 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:19:34,319 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2023-12-09 15:19:34,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5aeadc1/8a41459445f9418d965c159eca235253/FLAG79ff3db13 [2023-12-09 15:19:34,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5aeadc1/8a41459445f9418d965c159eca235253 [2023-12-09 15:19:34,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:19:34,335 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:19:34,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:19:34,336 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:19:34,344 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:19:34,345 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,345 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3098f0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34, skipping insertion in model container [2023-12-09 15:19:34,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,359 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:19:34,453 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2251,2264] [2023-12-09 15:19:34,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:19:34,461 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:19:34,474 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2251,2264] [2023-12-09 15:19:34,475 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:19:34,480 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:19:34,480 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:19:34,486 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:19:34,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34 WrapperNode [2023-12-09 15:19:34,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:19:34,487 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:19:34,487 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:19:34,487 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:19:34,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,510 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2023-12-09 15:19:34,511 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:19:34,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:19:34,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:19:34,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:19:34,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,522 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,524 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,525 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,526 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:19:34,527 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:19:34,527 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:19:34,527 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:19:34,527 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (1/1) ... [2023-12-09 15:19:34,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:19:34,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:19:34,555 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) [2023-12-09 15:19:34,563 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 [2023-12-09 15:19:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:19:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:19:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:19:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:19:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:19:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-09 15:19:34,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-09 15:19:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:19:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:19:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:19:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:19:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:19:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:19:34,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:19:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:19:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:19:34,594 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:19:34,731 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:19:34,732 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:19:34,879 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:19:34,896 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:19:34,896 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-09 15:19:34,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:19:34 BoogieIcfgContainer [2023-12-09 15:19:34,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:19:34,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:19:34,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:19:34,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:19:34,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:19:34" (1/3) ... [2023-12-09 15:19:34,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667da168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:19:34, skipping insertion in model container [2023-12-09 15:19:34,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:19:34" (2/3) ... [2023-12-09 15:19:34,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667da168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:19:34, skipping insertion in model container [2023-12-09 15:19:34,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:19:34" (3/3) ... [2023-12-09 15:19:34,902 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2023-12-09 15:19:34,913 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:19:34,914 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:19:34,914 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:19:34,954 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-09 15:19:34,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 96 transitions, 213 flow [2023-12-09 15:19:35,011 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-12-09 15:19:35,011 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:19:35,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 93 events. 2/93 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 29 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-12-09 15:19:35,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 96 transitions, 213 flow [2023-12-09 15:19:35,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 82 transitions, 182 flow [2023-12-09 15:19:35,023 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:19:35,027 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;@1ae152cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:19:35,027 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 15:19:35,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:19:35,045 INFO L124 PetriNetUnfolderBase]: 2/81 cut-off events. [2023-12-09 15:19:35,045 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:19:35,045 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:35,045 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:35,046 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:19:35,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1128300017, now seen corresponding path program 1 times [2023-12-09 15:19:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:35,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097070400] [2023-12-09 15:19:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:36,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:36,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:36,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097070400] [2023-12-09 15:19:36,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097070400] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:36,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:36,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 15:19:36,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101721167] [2023-12-09 15:19:36,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:36,073 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:19:36,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:19:36,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:19:36,115 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 96 [2023-12-09 15:19:36,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 182 flow. Second operand has 11 states, 11 states have (on average 63.72727272727273) internal successors, (701), 11 states have internal predecessors, (701), 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) [2023-12-09 15:19:36,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:36,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 96 [2023-12-09 15:19:36,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:36,573 INFO L124 PetriNetUnfolderBase]: 58/252 cut-off events. [2023-12-09 15:19:36,574 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-12-09 15:19:36,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 252 events. 58/252 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 976 event pairs, 2 based on Foata normal form. 3/252 useless extension candidates. Maximal degree in co-relation 289. Up to 65 conditions per place. [2023-12-09 15:19:36,577 INFO L140 encePairwiseOnDemand]: 80/96 looper letters, 35 selfloop transitions, 15 changer transitions 22/120 dead transitions. [2023-12-09 15:19:36,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 120 transitions, 453 flow [2023-12-09 15:19:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:19:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:19:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 991 transitions. [2023-12-09 15:19:36,589 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6881944444444444 [2023-12-09 15:19:36,589 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 991 transitions. [2023-12-09 15:19:36,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 991 transitions. [2023-12-09 15:19:36,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:36,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 991 transitions. [2023-12-09 15:19:36,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 66.06666666666666) internal successors, (991), 15 states have internal predecessors, (991), 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) [2023-12-09 15:19:36,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 96.0) internal successors, (1536), 16 states have internal predecessors, (1536), 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) [2023-12-09 15:19:36,603 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 96.0) internal successors, (1536), 16 states have internal predecessors, (1536), 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) [2023-12-09 15:19:36,605 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 14 predicate places. [2023-12-09 15:19:36,605 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 120 transitions, 453 flow [2023-12-09 15:19:36,606 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 63.72727272727273) internal successors, (701), 11 states have internal predecessors, (701), 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) [2023-12-09 15:19:36,606 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:36,606 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:36,606 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:19:36,606 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:19:36,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:36,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1090838023, now seen corresponding path program 2 times [2023-12-09 15:19:36,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:36,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419137969] [2023-12-09 15:19:36,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:36,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:36,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:36,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419137969] [2023-12-09 15:19:36,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419137969] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:36,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:36,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:19:36,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270071580] [2023-12-09 15:19:36,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:36,976 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:19:36,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:36,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:19:36,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:19:36,978 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 96 [2023-12-09 15:19:36,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 120 transitions, 453 flow. Second operand has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 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) [2023-12-09 15:19:36,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:36,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 96 [2023-12-09 15:19:36,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:37,302 INFO L124 PetriNetUnfolderBase]: 72/374 cut-off events. [2023-12-09 15:19:37,302 INFO L125 PetriNetUnfolderBase]: For 274/308 co-relation queries the response was YES. [2023-12-09 15:19:37,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 374 events. 72/374 cut-off events. For 274/308 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1910 event pairs, 3 based on Foata normal form. 16/384 useless extension candidates. Maximal degree in co-relation 541. Up to 108 conditions per place. [2023-12-09 15:19:37,306 INFO L140 encePairwiseOnDemand]: 82/96 looper letters, 47 selfloop transitions, 24 changer transitions 56/175 dead transitions. [2023-12-09 15:19:37,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 175 transitions, 987 flow [2023-12-09 15:19:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:19:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:19:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1059 transitions. [2023-12-09 15:19:37,308 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.689453125 [2023-12-09 15:19:37,309 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1059 transitions. [2023-12-09 15:19:37,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1059 transitions. [2023-12-09 15:19:37,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:37,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1059 transitions. [2023-12-09 15:19:37,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 66.1875) internal successors, (1059), 16 states have internal predecessors, (1059), 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) [2023-12-09 15:19:37,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 96.0) internal successors, (1632), 17 states have internal predecessors, (1632), 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) [2023-12-09 15:19:37,315 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 96.0) internal successors, (1632), 17 states have internal predecessors, (1632), 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) [2023-12-09 15:19:37,315 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 29 predicate places. [2023-12-09 15:19:37,315 INFO L500 AbstractCegarLoop]: Abstraction has has 119 places, 175 transitions, 987 flow [2023-12-09 15:19:37,316 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 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) [2023-12-09 15:19:37,316 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:37,316 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:37,316 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:19:37,316 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:19:37,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash -431947097, now seen corresponding path program 3 times [2023-12-09 15:19:37,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:37,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700366962] [2023-12-09 15:19:37,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:37,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:37,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:37,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700366962] [2023-12-09 15:19:37,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700366962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:37,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:37,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 15:19:37,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140071941] [2023-12-09 15:19:37,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:37,679 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:19:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:19:37,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:19:37,685 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 96 [2023-12-09 15:19:37,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 175 transitions, 987 flow. Second operand has 11 states, 11 states have (on average 63.72727272727273) internal successors, (701), 11 states have internal predecessors, (701), 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) [2023-12-09 15:19:37,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:37,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 96 [2023-12-09 15:19:37,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:38,051 INFO L124 PetriNetUnfolderBase]: 82/432 cut-off events. [2023-12-09 15:19:38,051 INFO L125 PetriNetUnfolderBase]: For 497/559 co-relation queries the response was YES. [2023-12-09 15:19:38,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 432 events. 82/432 cut-off events. For 497/559 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2468 event pairs, 2 based on Foata normal form. 32/461 useless extension candidates. Maximal degree in co-relation 582. Up to 137 conditions per place. [2023-12-09 15:19:38,055 INFO L140 encePairwiseOnDemand]: 82/96 looper letters, 32 selfloop transitions, 17 changer transitions 103/200 dead transitions. [2023-12-09 15:19:38,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 200 transitions, 1471 flow [2023-12-09 15:19:38,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:19:38,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:19:38,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 991 transitions. [2023-12-09 15:19:38,057 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6881944444444444 [2023-12-09 15:19:38,058 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 991 transitions. [2023-12-09 15:19:38,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 991 transitions. [2023-12-09 15:19:38,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:38,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 991 transitions. [2023-12-09 15:19:38,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 66.06666666666666) internal successors, (991), 15 states have internal predecessors, (991), 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) [2023-12-09 15:19:38,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 96.0) internal successors, (1536), 16 states have internal predecessors, (1536), 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) [2023-12-09 15:19:38,062 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 96.0) internal successors, (1536), 16 states have internal predecessors, (1536), 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) [2023-12-09 15:19:38,063 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 43 predicate places. [2023-12-09 15:19:38,063 INFO L500 AbstractCegarLoop]: Abstraction has has 133 places, 200 transitions, 1471 flow [2023-12-09 15:19:38,064 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 63.72727272727273) internal successors, (701), 11 states have internal predecessors, (701), 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) [2023-12-09 15:19:38,064 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:38,064 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:38,065 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:19:38,065 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:19:38,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:38,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1674709761, now seen corresponding path program 4 times [2023-12-09 15:19:38,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:38,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679423910] [2023-12-09 15:19:38,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:38,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:38,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:38,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679423910] [2023-12-09 15:19:38,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679423910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:38,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:19:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920007646] [2023-12-09 15:19:38,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:38,347 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:19:38,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:38,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:19:38,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:19:38,349 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 96 [2023-12-09 15:19:38,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 200 transitions, 1471 flow. Second operand has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 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) [2023-12-09 15:19:38,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:38,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 96 [2023-12-09 15:19:38,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:38,605 INFO L124 PetriNetUnfolderBase]: 81/470 cut-off events. [2023-12-09 15:19:38,606 INFO L125 PetriNetUnfolderBase]: For 830/916 co-relation queries the response was YES. [2023-12-09 15:19:38,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1596 conditions, 470 events. 81/470 cut-off events. For 830/916 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2841 event pairs, 0 based on Foata normal form. 14/481 useless extension candidates. Maximal degree in co-relation 762. Up to 199 conditions per place. [2023-12-09 15:19:38,607 INFO L140 encePairwiseOnDemand]: 82/96 looper letters, 34 selfloop transitions, 17 changer transitions 126/225 dead transitions. [2023-12-09 15:19:38,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 225 transitions, 2052 flow [2023-12-09 15:19:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-09 15:19:38,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-12-09 15:19:38,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 917 transitions. [2023-12-09 15:19:38,609 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6822916666666666 [2023-12-09 15:19:38,609 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 917 transitions. [2023-12-09 15:19:38,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 917 transitions. [2023-12-09 15:19:38,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:38,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 917 transitions. [2023-12-09 15:19:38,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 65.5) internal successors, (917), 14 states have internal predecessors, (917), 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) [2023-12-09 15:19:38,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 96.0) internal successors, (1440), 15 states have internal predecessors, (1440), 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) [2023-12-09 15:19:38,614 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 96.0) internal successors, (1440), 15 states have internal predecessors, (1440), 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) [2023-12-09 15:19:38,614 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 56 predicate places. [2023-12-09 15:19:38,614 INFO L500 AbstractCegarLoop]: Abstraction has has 146 places, 225 transitions, 2052 flow [2023-12-09 15:19:38,615 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 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) [2023-12-09 15:19:38,615 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:38,615 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:38,615 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:19:38,615 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:19:38,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:38,615 INFO L85 PathProgramCache]: Analyzing trace with hash -663351179, now seen corresponding path program 5 times [2023-12-09 15:19:38,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:38,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493089081] [2023-12-09 15:19:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:38,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:38,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:38,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493089081] [2023-12-09 15:19:38,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493089081] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:38,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:38,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 15:19:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366477039] [2023-12-09 15:19:38,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:38,854 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:19:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:38,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:19:38,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:19:38,856 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 96 [2023-12-09 15:19:38,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 225 transitions, 2052 flow. Second operand has 11 states, 11 states have (on average 63.72727272727273) internal successors, (701), 11 states have internal predecessors, (701), 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) [2023-12-09 15:19:38,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:38,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 96 [2023-12-09 15:19:38,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:39,194 INFO L124 PetriNetUnfolderBase]: 85/521 cut-off events. [2023-12-09 15:19:39,194 INFO L125 PetriNetUnfolderBase]: For 1444/1604 co-relation queries the response was YES. [2023-12-09 15:19:39,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 521 events. 85/521 cut-off events. For 1444/1604 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3339 event pairs, 1 based on Foata normal form. 38/557 useless extension candidates. Maximal degree in co-relation 909. Up to 226 conditions per place. [2023-12-09 15:19:39,196 INFO L140 encePairwiseOnDemand]: 82/96 looper letters, 35 selfloop transitions, 6 changer transitions 167/256 dead transitions. [2023-12-09 15:19:39,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 256 transitions, 2838 flow [2023-12-09 15:19:39,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-09 15:19:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-12-09 15:19:39,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1183 transitions. [2023-12-09 15:19:39,198 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6846064814814815 [2023-12-09 15:19:39,198 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1183 transitions. [2023-12-09 15:19:39,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1183 transitions. [2023-12-09 15:19:39,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:39,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1183 transitions. [2023-12-09 15:19:39,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 65.72222222222223) internal successors, (1183), 18 states have internal predecessors, (1183), 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) [2023-12-09 15:19:39,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 96.0) internal successors, (1824), 19 states have internal predecessors, (1824), 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) [2023-12-09 15:19:39,203 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 96.0) internal successors, (1824), 19 states have internal predecessors, (1824), 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) [2023-12-09 15:19:39,203 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 73 predicate places. [2023-12-09 15:19:39,204 INFO L500 AbstractCegarLoop]: Abstraction has has 163 places, 256 transitions, 2838 flow [2023-12-09 15:19:39,204 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 63.72727272727273) internal successors, (701), 11 states have internal predecessors, (701), 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) [2023-12-09 15:19:39,204 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:39,204 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:39,204 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:19:39,204 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:19:39,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:39,205 INFO L85 PathProgramCache]: Analyzing trace with hash 5630301, now seen corresponding path program 6 times [2023-12-09 15:19:39,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:39,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890108538] [2023-12-09 15:19:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:39,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:39,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:39,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890108538] [2023-12-09 15:19:39,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890108538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:39,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:39,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 15:19:39,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389543839] [2023-12-09 15:19:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:39,504 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:19:39,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:19:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:19:39,505 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 96 [2023-12-09 15:19:39,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 256 transitions, 2838 flow. Second operand has 11 states, 11 states have (on average 63.72727272727273) internal successors, (701), 11 states have internal predecessors, (701), 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) [2023-12-09 15:19:39,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:39,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 96 [2023-12-09 15:19:39,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:39,790 INFO L124 PetriNetUnfolderBase]: 84/531 cut-off events. [2023-12-09 15:19:39,791 INFO L125 PetriNetUnfolderBase]: For 2054/2278 co-relation queries the response was YES. [2023-12-09 15:19:39,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2408 conditions, 531 events. 84/531 cut-off events. For 2054/2278 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3485 event pairs, 1 based on Foata normal form. 15/543 useless extension candidates. Maximal degree in co-relation 1417. Up to 232 conditions per place. [2023-12-09 15:19:39,793 INFO L140 encePairwiseOnDemand]: 82/96 looper letters, 25 selfloop transitions, 10 changer transitions 180/263 dead transitions. [2023-12-09 15:19:39,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 263 transitions, 3361 flow [2023-12-09 15:19:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:19:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:19:39,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 853 transitions. [2023-12-09 15:19:39,795 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6834935897435898 [2023-12-09 15:19:39,795 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 853 transitions. [2023-12-09 15:19:39,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 853 transitions. [2023-12-09 15:19:39,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:39,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 853 transitions. [2023-12-09 15:19:39,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 65.61538461538461) internal successors, (853), 13 states have internal predecessors, (853), 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) [2023-12-09 15:19:39,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 96.0) internal successors, (1344), 14 states have internal predecessors, (1344), 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) [2023-12-09 15:19:39,798 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 96.0) internal successors, (1344), 14 states have internal predecessors, (1344), 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) [2023-12-09 15:19:39,799 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 85 predicate places. [2023-12-09 15:19:39,799 INFO L500 AbstractCegarLoop]: Abstraction has has 175 places, 263 transitions, 3361 flow [2023-12-09 15:19:39,799 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 63.72727272727273) internal successors, (701), 11 states have internal predecessors, (701), 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) [2023-12-09 15:19:39,799 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:19:39,799 INFO L233 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:19:39,800 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:19:39,800 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:19:39,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:19:39,800 INFO L85 PathProgramCache]: Analyzing trace with hash -879597085, now seen corresponding path program 7 times [2023-12-09 15:19:39,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:19:39,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244849968] [2023-12-09 15:19:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:19:39,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:19:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:19:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:19:40,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:19:40,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244849968] [2023-12-09 15:19:40,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244849968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:19:40,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:19:40,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-09 15:19:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575372327] [2023-12-09 15:19:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:19:40,057 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:19:40,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:19:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:19:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:19:40,058 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 96 [2023-12-09 15:19:40,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 263 transitions, 3361 flow. Second operand has 11 states, 11 states have (on average 63.72727272727273) internal successors, (701), 11 states have internal predecessors, (701), 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) [2023-12-09 15:19:40,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:19:40,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 96 [2023-12-09 15:19:40,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:19:40,397 INFO L124 PetriNetUnfolderBase]: 86/603 cut-off events. [2023-12-09 15:19:40,397 INFO L125 PetriNetUnfolderBase]: For 3044/3351 co-relation queries the response was YES. [2023-12-09 15:19:40,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 603 events. 86/603 cut-off events. For 3044/3351 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4310 event pairs, 0 based on Foata normal form. 26/627 useless extension candidates. Maximal degree in co-relation 1722. Up to 261 conditions per place. [2023-12-09 15:19:40,399 INFO L140 encePairwiseOnDemand]: 82/96 looper letters, 0 selfloop transitions, 0 changer transitions 290/290 dead transitions. [2023-12-09 15:19:40,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 290 transitions, 4282 flow [2023-12-09 15:19:40,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-09 15:19:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-12-09 15:19:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1110 transitions. [2023-12-09 15:19:40,401 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6801470588235294 [2023-12-09 15:19:40,401 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1110 transitions. [2023-12-09 15:19:40,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1110 transitions. [2023-12-09 15:19:40,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:19:40,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1110 transitions. [2023-12-09 15:19:40,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 65.29411764705883) internal successors, (1110), 17 states have internal predecessors, (1110), 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) [2023-12-09 15:19:40,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 96.0) internal successors, (1728), 18 states have internal predecessors, (1728), 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) [2023-12-09 15:19:40,405 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 96.0) internal successors, (1728), 18 states have internal predecessors, (1728), 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) [2023-12-09 15:19:40,406 INFO L308 CegarLoopForPetriNet]: 90 programPoint places, 97 predicate places. [2023-12-09 15:19:40,406 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 290 transitions, 4282 flow [2023-12-09 15:19:40,406 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 63.72727272727273) internal successors, (701), 11 states have internal predecessors, (701), 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) [2023-12-09 15:19:40,410 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/parallel-simple-equiv.wvr.c_BEv2_AllErrorsAtOnce [2023-12-09 15:19:40,437 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-12-09 15:19:40,437 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-12-09 15:19:40,437 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-12-09 15:19:40,438 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-12-09 15:19:40,438 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:19:40,438 INFO L457 BasicCegarLoop]: Path program histogram: [7] [2023-12-09 15:19:40,440 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:19:40,440 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:19:40,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:19:40 BasicIcfg [2023-12-09 15:19:40,444 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:19:40,445 INFO L158 Benchmark]: Toolchain (without parser) took 6109.30ms. Allocated memory was 288.4MB in the beginning and 353.4MB in the end (delta: 65.0MB). Free memory was 244.3MB in the beginning and 141.9MB in the end (delta: 102.4MB). Peak memory consumption was 166.7MB. Max. memory is 8.0GB. [2023-12-09 15:19:40,445 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory was 138.9MB in the beginning and 138.8MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:19:40,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.21ms. Allocated memory is still 288.4MB. Free memory was 243.7MB in the beginning and 232.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-09 15:19:40,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.98ms. Allocated memory is still 288.4MB. Free memory was 232.7MB in the beginning and 231.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:19:40,446 INFO L158 Benchmark]: Boogie Preprocessor took 14.88ms. Allocated memory is still 288.4MB. Free memory was 230.7MB in the beginning and 229.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:19:40,446 INFO L158 Benchmark]: RCFGBuilder took 370.78ms. Allocated memory is still 288.4MB. Free memory was 229.7MB in the beginning and 215.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-09 15:19:40,446 INFO L158 Benchmark]: TraceAbstraction took 5545.42ms. Allocated memory was 288.4MB in the beginning and 353.4MB in the end (delta: 65.0MB). Free memory was 214.4MB in the beginning and 141.9MB in the end (delta: 72.4MB). Peak memory consumption was 136.3MB. Max. memory is 8.0GB. [2023-12-09 15:19:40,447 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory was 138.9MB in the beginning and 138.8MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 150.21ms. Allocated memory is still 288.4MB. Free memory was 243.7MB in the beginning and 232.7MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.98ms. Allocated memory is still 288.4MB. Free memory was 232.7MB in the beginning and 231.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.88ms. Allocated memory is still 288.4MB. Free memory was 230.7MB in the beginning and 229.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 370.78ms. Allocated memory is still 288.4MB. Free memory was 229.7MB in the beginning and 215.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5545.42ms. Allocated memory was 288.4MB in the beginning and 353.4MB in the end (delta: 65.0MB). Free memory was 214.4MB in the beginning and 141.9MB in the end (delta: 72.4MB). Peak memory consumption was 136.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 82]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 116 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 263 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 263 mSDsluCounter, 651 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 517 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2357 IncrementalHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 134 mSDtfsCounter, 2357 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4282occurred in iteration=7, InterpolantAutomatonStates: 108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 546 NumberOfCodeBlocks, 546 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 539 ConstructedInterpolants, 0 QuantifiedInterpolants, 5415 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-12-09 15:19:40,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...