/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 -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 22:20:10,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 22:20:10,535 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 [2023-11-29 22:20:10,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 22:20:10,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 22:20:10,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 22:20:10,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 22:20:10,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 22:20:10,560 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 22:20:10,563 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 22:20:10,563 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 22:20:10,563 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 22:20:10,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 22:20:10,564 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 22:20:10,565 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 22:20:10,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 22:20:10,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 22:20:10,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 22:20:10,565 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 22:20:10,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 22:20:10,565 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 22:20:10,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 22:20:10,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 22:20:10,566 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 22:20:10,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 22:20:10,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 22:20:10,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 22:20:10,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 22:20:10,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 22:20:10,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 22:20:10,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 22:20:10,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 22:20:10,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 22:20:10,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 22:20:10,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 22:20:10,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 22:20:10,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 22:20:10,767 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 22:20:10,767 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 22:20:10,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2023-11-29 22:20:11,729 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 22:20:11,887 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 22:20:11,887 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2023-11-29 22:20:11,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b3e2c88/39b178f0432a491985f845c14a77b886/FLAG7a31dfa8b [2023-11-29 22:20:11,902 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55b3e2c88/39b178f0432a491985f845c14a77b886 [2023-11-29 22:20:11,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 22:20:11,905 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 22:20:11,906 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 22:20:11,906 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 22:20:11,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 22:20:11,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:20:11" (1/1) ... [2023-11-29 22:20:11,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605b8496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:11, skipping insertion in model container [2023-11-29 22:20:11,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:20:11" (1/1) ... [2023-11-29 22:20:11,924 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 22:20:12,026 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/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2023-11-29 22:20:12,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 22:20:12,039 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 22:20:12,053 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/popl20-more-array-sum-alt2.wvr.c[2564,2577] [2023-11-29 22:20:12,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 22:20:12,060 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 22:20:12,061 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 22:20:12,065 INFO L206 MainTranslator]: Completed translation [2023-11-29 22:20:12,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12 WrapperNode [2023-11-29 22:20:12,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 22:20:12,066 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 22:20:12,066 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 22:20:12,066 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 22:20:12,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,092 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 200 [2023-11-29 22:20:12,093 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 22:20:12,093 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 22:20:12,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 22:20:12,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 22:20:12,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,101 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,101 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,107 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,121 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 22:20:12,123 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 22:20:12,123 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 22:20:12,123 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 22:20:12,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (1/1) ... [2023-11-29 22:20:12,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 22:20:12,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:12,150 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) [2023-11-29 22:20:12,155 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 [2023-11-29 22:20:12,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 22:20:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 22:20:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 22:20:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 22:20:12,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 22:20:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 22:20:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 22:20:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 22:20:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 22:20:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 22:20:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 22:20:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 22:20:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 22:20:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 22:20:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 22:20:12,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 22:20:12,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 22:20:12,177 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 22:20:12,266 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 22:20:12,268 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 22:20:12,519 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 22:20:12,655 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 22:20:12,655 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 22:20:12,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:20:12 BoogieIcfgContainer [2023-11-29 22:20:12,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 22:20:12,658 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 22:20:12,658 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 22:20:12,660 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 22:20:12,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:20:11" (1/3) ... [2023-11-29 22:20:12,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523f7622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:20:12, skipping insertion in model container [2023-11-29 22:20:12,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:20:12" (2/3) ... [2023-11-29 22:20:12,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523f7622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:20:12, skipping insertion in model container [2023-11-29 22:20:12,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:20:12" (3/3) ... [2023-11-29 22:20:12,661 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2023-11-29 22:20:12,674 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 22:20:12,675 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 22:20:12,675 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 22:20:12,717 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 22:20:12,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 159 transitions, 339 flow [2023-11-29 22:20:12,781 INFO L124 PetriNetUnfolderBase]: 12/156 cut-off events. [2023-11-29 22:20:12,781 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 22:20:12,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 12/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 105 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-11-29 22:20:12,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 159 transitions, 339 flow [2023-11-29 22:20:12,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 145 transitions, 308 flow [2023-11-29 22:20:12,795 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 22:20:12,799 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;@3d51ed5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 22:20:12,799 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 22:20:12,823 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 22:20:12,823 INFO L124 PetriNetUnfolderBase]: 12/144 cut-off events. [2023-11-29 22:20:12,823 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 22:20:12,823 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:12,824 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:12,824 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)] === [2023-11-29 22:20:12,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:12,828 INFO L85 PathProgramCache]: Analyzing trace with hash 882123870, now seen corresponding path program 1 times [2023-11-29 22:20:12,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:12,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305928611] [2023-11-29 22:20:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:12,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:13,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:13,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305928611] [2023-11-29 22:20:13,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305928611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:20:13,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:20:13,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 22:20:13,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049056632] [2023-11-29 22:20:13,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:20:13,441 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 22:20:13,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:13,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 22:20:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 22:20:13,468 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 159 [2023-11-29 22:20:13,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 145 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 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) [2023-11-29 22:20:13,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:13,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 159 [2023-11-29 22:20:13,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:13,666 INFO L124 PetriNetUnfolderBase]: 53/357 cut-off events. [2023-11-29 22:20:13,666 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-29 22:20:13,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 357 events. 53/357 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1220 event pairs, 8 based on Foata normal form. 58/389 useless extension candidates. Maximal degree in co-relation 199. Up to 51 conditions per place. [2023-11-29 22:20:13,673 INFO L140 encePairwiseOnDemand]: 139/159 looper letters, 49 selfloop transitions, 6 changer transitions 10/163 dead transitions. [2023-11-29 22:20:13,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 163 transitions, 501 flow [2023-11-29 22:20:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 22:20:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 22:20:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1081 transitions. [2023-11-29 22:20:13,689 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7554157931516422 [2023-11-29 22:20:13,689 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1081 transitions. [2023-11-29 22:20:13,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1081 transitions. [2023-11-29 22:20:13,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:13,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1081 transitions. [2023-11-29 22:20:13,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.11111111111111) internal successors, (1081), 9 states have internal predecessors, (1081), 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) [2023-11-29 22:20:13,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2023-11-29 22:20:13,707 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 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) [2023-11-29 22:20:13,710 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 8 predicate places. [2023-11-29 22:20:13,710 INFO L500 AbstractCegarLoop]: Abstraction has has 151 places, 163 transitions, 501 flow [2023-11-29 22:20:13,711 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 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) [2023-11-29 22:20:13,711 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:13,712 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:13,712 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 22:20:13,712 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)] === [2023-11-29 22:20:13,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:13,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1273854514, now seen corresponding path program 1 times [2023-11-29 22:20:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:13,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083011808] [2023-11-29 22:20:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:13,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:13,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:13,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083011808] [2023-11-29 22:20:13,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083011808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:20:13,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:20:13,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 22:20:13,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682205866] [2023-11-29 22:20:13,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:20:13,934 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 22:20:13,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:13,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 22:20:13,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 22:20:13,937 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 159 [2023-11-29 22:20:13,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 163 transitions, 501 flow. Second operand has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-29 22:20:13,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:13,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 159 [2023-11-29 22:20:13,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:14,232 INFO L124 PetriNetUnfolderBase]: 452/1545 cut-off events. [2023-11-29 22:20:14,232 INFO L125 PetriNetUnfolderBase]: For 646/727 co-relation queries the response was YES. [2023-11-29 22:20:14,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2856 conditions, 1545 events. 452/1545 cut-off events. For 646/727 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10764 event pairs, 172 based on Foata normal form. 1/1322 useless extension candidates. Maximal degree in co-relation 1685. Up to 493 conditions per place. [2023-11-29 22:20:14,245 INFO L140 encePairwiseOnDemand]: 146/159 looper letters, 71 selfloop transitions, 14 changer transitions 11/200 dead transitions. [2023-11-29 22:20:14,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 200 transitions, 832 flow [2023-11-29 22:20:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 22:20:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 22:20:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1214 transitions. [2023-11-29 22:20:14,247 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7635220125786164 [2023-11-29 22:20:14,248 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1214 transitions. [2023-11-29 22:20:14,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1214 transitions. [2023-11-29 22:20:14,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:14,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1214 transitions. [2023-11-29 22:20:14,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 121.4) internal successors, (1214), 10 states have internal predecessors, (1214), 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) [2023-11-29 22:20:14,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 159.0) internal successors, (1749), 11 states have internal predecessors, (1749), 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) [2023-11-29 22:20:14,253 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 159.0) internal successors, (1749), 11 states have internal predecessors, (1749), 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) [2023-11-29 22:20:14,254 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 17 predicate places. [2023-11-29 22:20:14,254 INFO L500 AbstractCegarLoop]: Abstraction has has 160 places, 200 transitions, 832 flow [2023-11-29 22:20:14,255 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.0) internal successors, (833), 7 states have internal predecessors, (833), 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) [2023-11-29 22:20:14,255 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:14,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:14,256 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 22:20:14,256 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)] === [2023-11-29 22:20:14,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:14,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1115137970, now seen corresponding path program 1 times [2023-11-29 22:20:14,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:14,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230404201] [2023-11-29 22:20:14,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:14,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:14,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:14,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230404201] [2023-11-29 22:20:14,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230404201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:20:14,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:20:14,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 22:20:14,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64749448] [2023-11-29 22:20:14,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:20:14,461 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 22:20:14,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:14,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 22:20:14,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 22:20:14,463 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 159 [2023-11-29 22:20:14,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 200 transitions, 832 flow. Second operand has 10 states, 10 states have (on average 90.3) internal successors, (903), 10 states have internal predecessors, (903), 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) [2023-11-29 22:20:14,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:14,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 159 [2023-11-29 22:20:14,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:15,003 INFO L124 PetriNetUnfolderBase]: 1690/3524 cut-off events. [2023-11-29 22:20:15,003 INFO L125 PetriNetUnfolderBase]: For 3481/3972 co-relation queries the response was YES. [2023-11-29 22:20:15,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8869 conditions, 3524 events. 1690/3524 cut-off events. For 3481/3972 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 25519 event pairs, 1044 based on Foata normal form. 0/2829 useless extension candidates. Maximal degree in co-relation 6986. Up to 1938 conditions per place. [2023-11-29 22:20:15,028 INFO L140 encePairwiseOnDemand]: 141/159 looper letters, 119 selfloop transitions, 19 changer transitions 17/229 dead transitions. [2023-11-29 22:20:15,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 229 transitions, 1258 flow [2023-11-29 22:20:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 22:20:15,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 22:20:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1299 transitions. [2023-11-29 22:20:15,031 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5835579514824798 [2023-11-29 22:20:15,031 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1299 transitions. [2023-11-29 22:20:15,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1299 transitions. [2023-11-29 22:20:15,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:15,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1299 transitions. [2023-11-29 22:20:15,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 92.78571428571429) internal successors, (1299), 14 states have internal predecessors, (1299), 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) [2023-11-29 22:20:15,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 159.0) internal successors, (2385), 15 states have internal predecessors, (2385), 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) [2023-11-29 22:20:15,038 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 159.0) internal successors, (2385), 15 states have internal predecessors, (2385), 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) [2023-11-29 22:20:15,040 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 30 predicate places. [2023-11-29 22:20:15,040 INFO L500 AbstractCegarLoop]: Abstraction has has 173 places, 229 transitions, 1258 flow [2023-11-29 22:20:15,040 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 90.3) internal successors, (903), 10 states have internal predecessors, (903), 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) [2023-11-29 22:20:15,041 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:15,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:15,041 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 22:20:15,041 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)] === [2023-11-29 22:20:15,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:15,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1388531140, now seen corresponding path program 1 times [2023-11-29 22:20:15,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:15,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412295211] [2023-11-29 22:20:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:15,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:15,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:15,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:15,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412295211] [2023-11-29 22:20:15,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412295211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 22:20:15,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 22:20:15,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 22:20:15,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550886503] [2023-11-29 22:20:15,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:20:15,320 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 22:20:15,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:15,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 22:20:15,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-29 22:20:15,323 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 159 [2023-11-29 22:20:15,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 229 transitions, 1258 flow. Second operand has 10 states, 10 states have (on average 91.2) internal successors, (912), 10 states have internal predecessors, (912), 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) [2023-11-29 22:20:15,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:15,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 159 [2023-11-29 22:20:15,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:16,047 INFO L124 PetriNetUnfolderBase]: 1954/3789 cut-off events. [2023-11-29 22:20:16,047 INFO L125 PetriNetUnfolderBase]: For 6648/7436 co-relation queries the response was YES. [2023-11-29 22:20:16,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12059 conditions, 3789 events. 1954/3789 cut-off events. For 6648/7436 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 26472 event pairs, 1197 based on Foata normal form. 1/3039 useless extension candidates. Maximal degree in co-relation 8695. Up to 2304 conditions per place. [2023-11-29 22:20:16,078 INFO L140 encePairwiseOnDemand]: 142/159 looper letters, 89 selfloop transitions, 10 changer transitions 57/229 dead transitions. [2023-11-29 22:20:16,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 229 transitions, 1573 flow [2023-11-29 22:20:16,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 22:20:16,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 22:20:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1311 transitions. [2023-11-29 22:20:16,081 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5889487870619946 [2023-11-29 22:20:16,081 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1311 transitions. [2023-11-29 22:20:16,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1311 transitions. [2023-11-29 22:20:16,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:16,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1311 transitions. [2023-11-29 22:20:16,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 93.64285714285714) internal successors, (1311), 14 states have internal predecessors, (1311), 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) [2023-11-29 22:20:16,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 159.0) internal successors, (2385), 15 states have internal predecessors, (2385), 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) [2023-11-29 22:20:16,087 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 159.0) internal successors, (2385), 15 states have internal predecessors, (2385), 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) [2023-11-29 22:20:16,088 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 43 predicate places. [2023-11-29 22:20:16,088 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 229 transitions, 1573 flow [2023-11-29 22:20:16,088 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.2) internal successors, (912), 10 states have internal predecessors, (912), 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) [2023-11-29 22:20:16,088 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:16,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:16,089 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 22:20:16,089 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)] === [2023-11-29 22:20:16,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:16,089 INFO L85 PathProgramCache]: Analyzing trace with hash -493556433, now seen corresponding path program 1 times [2023-11-29 22:20:16,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:16,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225599493] [2023-11-29 22:20:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:16,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:16,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:16,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225599493] [2023-11-29 22:20:16,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225599493] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:16,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59325894] [2023-11-29 22:20:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:16,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:16,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:16,220 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:20:16,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 22:20:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:16,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 22:20:16,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:20:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:16,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:20:16,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:16,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59325894] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:16,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 22:20:16,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2023-11-29 22:20:16,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024447726] [2023-11-29 22:20:16,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:20:16,679 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 22:20:16,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:16,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 22:20:16,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-11-29 22:20:16,681 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2023-11-29 22:20:16,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 229 transitions, 1573 flow. Second operand has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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) [2023-11-29 22:20:16,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:16,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2023-11-29 22:20:16,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:17,348 INFO L124 PetriNetUnfolderBase]: 3097/5535 cut-off events. [2023-11-29 22:20:17,348 INFO L125 PetriNetUnfolderBase]: For 11576/13374 co-relation queries the response was YES. [2023-11-29 22:20:17,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22317 conditions, 5535 events. 3097/5535 cut-off events. For 11576/13374 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 38076 event pairs, 736 based on Foata normal form. 43/4418 useless extension candidates. Maximal degree in co-relation 16644. Up to 3668 conditions per place. [2023-11-29 22:20:17,395 INFO L140 encePairwiseOnDemand]: 142/159 looper letters, 171 selfloop transitions, 27 changer transitions 59/353 dead transitions. [2023-11-29 22:20:17,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 353 transitions, 3201 flow [2023-11-29 22:20:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 22:20:17,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 22:20:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1186 transitions. [2023-11-29 22:20:17,397 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7459119496855345 [2023-11-29 22:20:17,397 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1186 transitions. [2023-11-29 22:20:17,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1186 transitions. [2023-11-29 22:20:17,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:17,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1186 transitions. [2023-11-29 22:20:17,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.6) internal successors, (1186), 10 states have internal predecessors, (1186), 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) [2023-11-29 22:20:17,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 159.0) internal successors, (1749), 11 states have internal predecessors, (1749), 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) [2023-11-29 22:20:17,405 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 159.0) internal successors, (1749), 11 states have internal predecessors, (1749), 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) [2023-11-29 22:20:17,409 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 52 predicate places. [2023-11-29 22:20:17,409 INFO L500 AbstractCegarLoop]: Abstraction has has 195 places, 353 transitions, 3201 flow [2023-11-29 22:20:17,410 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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) [2023-11-29 22:20:17,410 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:17,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:17,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 22:20:17,619 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:17,619 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)] === [2023-11-29 22:20:17,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:17,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1743330443, now seen corresponding path program 2 times [2023-11-29 22:20:17,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:17,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980193903] [2023-11-29 22:20:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:17,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:17,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:17,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980193903] [2023-11-29 22:20:17,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980193903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:17,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405189366] [2023-11-29 22:20:17,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:20:17,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:17,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:17,736 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:20:17,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 22:20:17,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:20:17,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:20:17,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 22:20:17,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:20:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:17,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:20:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405189366] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:20:17,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:20:17,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 15 [2023-11-29 22:20:17,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736120999] [2023-11-29 22:20:17,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:20:17,984 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 22:20:17,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 22:20:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-29 22:20:17,986 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 159 [2023-11-29 22:20:17,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 353 transitions, 3201 flow. Second operand has 15 states, 15 states have (on average 107.4) internal successors, (1611), 15 states have internal predecessors, (1611), 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) [2023-11-29 22:20:17,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:17,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 159 [2023-11-29 22:20:17,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:19,536 INFO L124 PetriNetUnfolderBase]: 4767/8543 cut-off events. [2023-11-29 22:20:19,537 INFO L125 PetriNetUnfolderBase]: For 11992/15466 co-relation queries the response was YES. [2023-11-29 22:20:19,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38618 conditions, 8543 events. 4767/8543 cut-off events. For 11992/15466 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 62720 event pairs, 325 based on Foata normal form. 33/7496 useless extension candidates. Maximal degree in co-relation 30749. Up to 5011 conditions per place. [2023-11-29 22:20:19,596 INFO L140 encePairwiseOnDemand]: 138/159 looper letters, 497 selfloop transitions, 156 changer transitions 68/813 dead transitions. [2023-11-29 22:20:19,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 813 transitions, 8856 flow [2023-11-29 22:20:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 22:20:19,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 22:20:19,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3765 transitions. [2023-11-29 22:20:19,602 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7175528873642081 [2023-11-29 22:20:19,602 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3765 transitions. [2023-11-29 22:20:19,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3765 transitions. [2023-11-29 22:20:19,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:19,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3765 transitions. [2023-11-29 22:20:19,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 114.0909090909091) internal successors, (3765), 33 states have internal predecessors, (3765), 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) [2023-11-29 22:20:19,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 159.0) internal successors, (5406), 34 states have internal predecessors, (5406), 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) [2023-11-29 22:20:19,616 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 159.0) internal successors, (5406), 34 states have internal predecessors, (5406), 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) [2023-11-29 22:20:19,617 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 84 predicate places. [2023-11-29 22:20:19,617 INFO L500 AbstractCegarLoop]: Abstraction has has 227 places, 813 transitions, 8856 flow [2023-11-29 22:20:19,618 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.4) internal successors, (1611), 15 states have internal predecessors, (1611), 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) [2023-11-29 22:20:19,618 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:19,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:19,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 22:20:19,823 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 22:20:19,823 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)] === [2023-11-29 22:20:19,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:19,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2122240197, now seen corresponding path program 1 times [2023-11-29 22:20:19,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:19,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894073740] [2023-11-29 22:20:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:19,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:19,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:19,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894073740] [2023-11-29 22:20:19,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894073740] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:19,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931200684] [2023-11-29 22:20:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:19,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:19,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:19,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:20:19,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 22:20:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:20,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 22:20:20,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:20:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:20,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:20:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:20,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931200684] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:20,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 22:20:20,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2023-11-29 22:20:20,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934456105] [2023-11-29 22:20:20,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:20:20,213 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 22:20:20,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:20,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 22:20:20,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-11-29 22:20:20,214 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 159 [2023-11-29 22:20:20,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 813 transitions, 8856 flow. Second operand has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 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) [2023-11-29 22:20:20,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:20,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 159 [2023-11-29 22:20:20,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:21,101 INFO L124 PetriNetUnfolderBase]: 3725/6720 cut-off events. [2023-11-29 22:20:21,101 INFO L125 PetriNetUnfolderBase]: For 14166/16735 co-relation queries the response was YES. [2023-11-29 22:20:21,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33223 conditions, 6720 events. 3725/6720 cut-off events. For 14166/16735 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 46388 event pairs, 261 based on Foata normal form. 12/6006 useless extension candidates. Maximal degree in co-relation 28350. Up to 3801 conditions per place. [2023-11-29 22:20:21,163 INFO L140 encePairwiseOnDemand]: 148/159 looper letters, 425 selfloop transitions, 65 changer transitions 57/793 dead transitions. [2023-11-29 22:20:21,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 793 transitions, 9514 flow [2023-11-29 22:20:21,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 22:20:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 22:20:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 864 transitions. [2023-11-29 22:20:21,165 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7762803234501348 [2023-11-29 22:20:21,165 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 864 transitions. [2023-11-29 22:20:21,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 864 transitions. [2023-11-29 22:20:21,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:21,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 864 transitions. [2023-11-29 22:20:21,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 123.42857142857143) internal successors, (864), 7 states have internal predecessors, (864), 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) [2023-11-29 22:20:21,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 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) [2023-11-29 22:20:21,169 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 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) [2023-11-29 22:20:21,169 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 89 predicate places. [2023-11-29 22:20:21,169 INFO L500 AbstractCegarLoop]: Abstraction has has 232 places, 793 transitions, 9514 flow [2023-11-29 22:20:21,169 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.14285714285714) internal successors, (834), 7 states have internal predecessors, (834), 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) [2023-11-29 22:20:21,169 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:21,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:21,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 22:20:21,375 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:21,375 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:20:21,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:21,376 INFO L85 PathProgramCache]: Analyzing trace with hash 777718151, now seen corresponding path program 3 times [2023-11-29 22:20:21,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:21,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080387586] [2023-11-29 22:20:21,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:21,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:21,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:21,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:21,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080387586] [2023-11-29 22:20:21,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080387586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:21,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904705171] [2023-11-29 22:20:21,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:20:21,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:21,500 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:20:21,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 22:20:21,620 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 22:20:21,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:20:21,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 22:20:21,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:20:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:21,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:20:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:21,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904705171] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:20:21,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:20:21,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 15 [2023-11-29 22:20:21,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060485157] [2023-11-29 22:20:21,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:20:21,764 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 22:20:21,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:21,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 22:20:21,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2023-11-29 22:20:21,767 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 159 [2023-11-29 22:20:21,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 793 transitions, 9514 flow. Second operand has 15 states, 15 states have (on average 107.8) internal successors, (1617), 15 states have internal predecessors, (1617), 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) [2023-11-29 22:20:21,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:21,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 159 [2023-11-29 22:20:21,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:23,705 INFO L124 PetriNetUnfolderBase]: 6010/10701 cut-off events. [2023-11-29 22:20:23,705 INFO L125 PetriNetUnfolderBase]: For 23333/29118 co-relation queries the response was YES. [2023-11-29 22:20:23,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62040 conditions, 10701 events. 6010/10701 cut-off events. For 23333/29118 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 79261 event pairs, 180 based on Foata normal form. 91/9669 useless extension candidates. Maximal degree in co-relation 54544. Up to 6207 conditions per place. [2023-11-29 22:20:23,933 INFO L140 encePairwiseOnDemand]: 139/159 looper letters, 1096 selfloop transitions, 376 changer transitions 57/1615 dead transitions. [2023-11-29 22:20:23,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 1615 transitions, 22968 flow [2023-11-29 22:20:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 22:20:23,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-11-29 22:20:23,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3307 transitions. [2023-11-29 22:20:23,939 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7171980047711993 [2023-11-29 22:20:23,939 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3307 transitions. [2023-11-29 22:20:23,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3307 transitions. [2023-11-29 22:20:23,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:23,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3307 transitions. [2023-11-29 22:20:23,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 114.03448275862068) internal successors, (3307), 29 states have internal predecessors, (3307), 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) [2023-11-29 22:20:23,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 159.0) internal successors, (4770), 30 states have internal predecessors, (4770), 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) [2023-11-29 22:20:23,951 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 159.0) internal successors, (4770), 30 states have internal predecessors, (4770), 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) [2023-11-29 22:20:23,952 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 117 predicate places. [2023-11-29 22:20:23,952 INFO L500 AbstractCegarLoop]: Abstraction has has 260 places, 1615 transitions, 22968 flow [2023-11-29 22:20:23,962 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 107.8) internal successors, (1617), 15 states have internal predecessors, (1617), 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) [2023-11-29 22:20:23,962 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:23,962 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:23,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 22:20:24,166 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:24,169 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:20:24,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:24,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1396113995, now seen corresponding path program 4 times [2023-11-29 22:20:24,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:24,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748267289] [2023-11-29 22:20:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:24,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:24,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:24,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:24,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748267289] [2023-11-29 22:20:24,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748267289] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:24,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018735571] [2023-11-29 22:20:24,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 22:20:24,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:24,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:24,372 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:20:24,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 22:20:24,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 22:20:24,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:20:24,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 22:20:24,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:20:24,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:24,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:20:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:24,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018735571] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:24,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 22:20:24,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2023-11-29 22:20:24,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993987702] [2023-11-29 22:20:24,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:20:24,731 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 22:20:24,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:24,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 22:20:24,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-29 22:20:24,732 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2023-11-29 22:20:24,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 1615 transitions, 22968 flow. Second operand has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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) [2023-11-29 22:20:24,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:24,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2023-11-29 22:20:24,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:26,986 INFO L124 PetriNetUnfolderBase]: 5985/10697 cut-off events. [2023-11-29 22:20:26,986 INFO L125 PetriNetUnfolderBase]: For 25249/28919 co-relation queries the response was YES. [2023-11-29 22:20:27,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69460 conditions, 10697 events. 5985/10697 cut-off events. For 25249/28919 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 79497 event pairs, 161 based on Foata normal form. 109/9715 useless extension candidates. Maximal degree in co-relation 66129. Up to 6182 conditions per place. [2023-11-29 22:20:27,074 INFO L140 encePairwiseOnDemand]: 141/159 looper letters, 990 selfloop transitions, 242 changer transitions 57/1615 dead transitions. [2023-11-29 22:20:27,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 1615 transitions, 25511 flow [2023-11-29 22:20:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 22:20:27,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 22:20:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1312 transitions. [2023-11-29 22:20:27,076 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7501429388221841 [2023-11-29 22:20:27,076 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1312 transitions. [2023-11-29 22:20:27,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1312 transitions. [2023-11-29 22:20:27,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:27,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1312 transitions. [2023-11-29 22:20:27,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 119.27272727272727) internal successors, (1312), 11 states have internal predecessors, (1312), 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) [2023-11-29 22:20:27,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 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) [2023-11-29 22:20:27,081 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 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) [2023-11-29 22:20:27,082 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 127 predicate places. [2023-11-29 22:20:27,082 INFO L500 AbstractCegarLoop]: Abstraction has has 270 places, 1615 transitions, 25511 flow [2023-11-29 22:20:27,082 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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) [2023-11-29 22:20:27,082 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:27,082 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:27,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 22:20:27,287 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:27,287 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:20:27,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1796557957, now seen corresponding path program 5 times [2023-11-29 22:20:27,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:27,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708560966] [2023-11-29 22:20:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:27,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:27,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:27,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:27,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708560966] [2023-11-29 22:20:27,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708560966] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:27,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503677501] [2023-11-29 22:20:27,415 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 22:20:27,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:27,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:27,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:20:27,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 22:20:27,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:20:27,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:20:27,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 22:20:27,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:20:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:27,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:20:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:27,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503677501] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:20:27,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:20:27,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2023-11-29 22:20:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94135129] [2023-11-29 22:20:27,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:20:27,655 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 22:20:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 22:20:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-11-29 22:20:27,657 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 159 [2023-11-29 22:20:27,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 1615 transitions, 25511 flow. Second operand has 17 states, 17 states have (on average 107.0) internal successors, (1819), 17 states have internal predecessors, (1819), 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) [2023-11-29 22:20:27,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:27,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 159 [2023-11-29 22:20:27,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:31,275 INFO L124 PetriNetUnfolderBase]: 7871/13938 cut-off events. [2023-11-29 22:20:31,275 INFO L125 PetriNetUnfolderBase]: For 37135/43114 co-relation queries the response was YES. [2023-11-29 22:20:31,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102364 conditions, 13938 events. 7871/13938 cut-off events. For 37135/43114 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 106909 event pairs, 162 based on Foata normal form. 208/12770 useless extension candidates. Maximal degree in co-relation 98337. Up to 7947 conditions per place. [2023-11-29 22:20:31,396 INFO L140 encePairwiseOnDemand]: 137/159 looper letters, 1431 selfloop transitions, 515 changer transitions 57/2089 dead transitions. [2023-11-29 22:20:31,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 2089 transitions, 36821 flow [2023-11-29 22:20:31,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 22:20:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-29 22:20:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3117 transitions. [2023-11-29 22:20:31,401 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7260656883298393 [2023-11-29 22:20:31,401 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3117 transitions. [2023-11-29 22:20:31,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3117 transitions. [2023-11-29 22:20:31,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:31,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3117 transitions. [2023-11-29 22:20:31,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 115.44444444444444) internal successors, (3117), 27 states have internal predecessors, (3117), 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) [2023-11-29 22:20:31,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 159.0) internal successors, (4452), 28 states have internal predecessors, (4452), 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) [2023-11-29 22:20:31,409 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 159.0) internal successors, (4452), 28 states have internal predecessors, (4452), 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) [2023-11-29 22:20:31,409 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 153 predicate places. [2023-11-29 22:20:31,409 INFO L500 AbstractCegarLoop]: Abstraction has has 296 places, 2089 transitions, 36821 flow [2023-11-29 22:20:31,410 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 107.0) internal successors, (1819), 17 states have internal predecessors, (1819), 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) [2023-11-29 22:20:31,410 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:31,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:31,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 22:20:31,614 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:31,615 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:20:31,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1760880949, now seen corresponding path program 6 times [2023-11-29 22:20:31,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:31,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063577862] [2023-11-29 22:20:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:31,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:31,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:31,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063577862] [2023-11-29 22:20:31,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063577862] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:31,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113559151] [2023-11-29 22:20:31,733 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 22:20:31,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:31,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:31,734 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:20:31,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 22:20:31,832 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 22:20:31,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:20:31,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 22:20:31,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:20:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:31,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:20:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:32,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113559151] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:32,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 22:20:32,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 20 [2023-11-29 22:20:32,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943827084] [2023-11-29 22:20:32,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 22:20:32,110 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 22:20:32,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:32,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 22:20:32,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-29 22:20:32,111 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2023-11-29 22:20:32,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 2089 transitions, 36821 flow. Second operand has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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) [2023-11-29 22:20:32,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:32,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2023-11-29 22:20:32,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:35,634 INFO L124 PetriNetUnfolderBase]: 7798/13753 cut-off events. [2023-11-29 22:20:35,635 INFO L125 PetriNetUnfolderBase]: For 41349/48779 co-relation queries the response was YES. [2023-11-29 22:20:35,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111172 conditions, 13753 events. 7798/13753 cut-off events. For 41349/48779 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 104720 event pairs, 187 based on Foata normal form. 50/12454 useless extension candidates. Maximal degree in co-relation 98840. Up to 7865 conditions per place. [2023-11-29 22:20:35,785 INFO L140 encePairwiseOnDemand]: 142/159 looper letters, 1253 selfloop transitions, 282 changer transitions 57/2026 dead transitions. [2023-11-29 22:20:35,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 2026 transitions, 38918 flow [2023-11-29 22:20:35,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 22:20:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 22:20:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1185 transitions. [2023-11-29 22:20:35,787 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7452830188679245 [2023-11-29 22:20:35,788 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1185 transitions. [2023-11-29 22:20:35,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1185 transitions. [2023-11-29 22:20:35,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:35,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1185 transitions. [2023-11-29 22:20:35,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.5) internal successors, (1185), 10 states have internal predecessors, (1185), 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) [2023-11-29 22:20:35,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 159.0) internal successors, (1749), 11 states have internal predecessors, (1749), 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) [2023-11-29 22:20:35,791 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 159.0) internal successors, (1749), 11 states have internal predecessors, (1749), 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) [2023-11-29 22:20:35,791 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 162 predicate places. [2023-11-29 22:20:35,791 INFO L500 AbstractCegarLoop]: Abstraction has has 305 places, 2026 transitions, 38918 flow [2023-11-29 22:20:35,792 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 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) [2023-11-29 22:20:35,792 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:35,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:35,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 22:20:35,997 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:35,997 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:20:35,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:35,998 INFO L85 PathProgramCache]: Analyzing trace with hash 957731967, now seen corresponding path program 1 times [2023-11-29 22:20:35,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:35,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992256909] [2023-11-29 22:20:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:35,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:37,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:37,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992256909] [2023-11-29 22:20:37,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992256909] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:37,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969775034] [2023-11-29 22:20:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:37,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:37,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:37,209 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:20:37,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 22:20:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:37,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 22:20:37,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:20:37,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 22:20:37,385 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 22:20:37,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-29 22:20:37,425 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 22:20:37,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-11-29 22:20:37,710 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-29 22:20:37,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 30 [2023-11-29 22:20:37,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 22:20:38,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 22:20:38,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 22:20:38,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 22:20:38,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 22:20:38,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:20:38,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:20:38,468 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_320 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_320) c_~A~0.base))) (= (+ c_~res1~0 (select .cse0 (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset))) (+ (select .cse0 c_~A~0.offset) c_~res2~0)))) is different from false [2023-11-29 22:20:38,485 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_319 (Array Int Int)) (v_ArrVal_320 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_319) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_320) c_~A~0.base))) (= (+ c_~res2~0 (select .cse0 c_~A~0.offset)) (+ (select .cse0 (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) c_~res1~0)))) is different from false [2023-11-29 22:20:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:40,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969775034] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:20:40,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:20:40,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 13] total 46 [2023-11-29 22:20:40,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659796459] [2023-11-29 22:20:40,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:20:40,749 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 22:20:40,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:40,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 22:20:40,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=1628, Unknown=3, NotChecked=170, Total=2070 [2023-11-29 22:20:40,756 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 159 [2023-11-29 22:20:40,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 2026 transitions, 38918 flow. Second operand has 46 states, 46 states have (on average 62.28260869565217) internal successors, (2865), 46 states have internal predecessors, (2865), 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) [2023-11-29 22:20:40,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:40,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 159 [2023-11-29 22:20:40,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:20:50,708 INFO L124 PetriNetUnfolderBase]: 21574/35591 cut-off events. [2023-11-29 22:20:50,709 INFO L125 PetriNetUnfolderBase]: For 136502/138998 co-relation queries the response was YES. [2023-11-29 22:20:50,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294685 conditions, 35591 events. 21574/35591 cut-off events. For 136502/138998 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 294171 event pairs, 705 based on Foata normal form. 52/31731 useless extension candidates. Maximal degree in co-relation 263941. Up to 19461 conditions per place. [2023-11-29 22:20:51,177 INFO L140 encePairwiseOnDemand]: 125/159 looper letters, 2322 selfloop transitions, 692 changer transitions 69/3445 dead transitions. [2023-11-29 22:20:51,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 3445 transitions, 71416 flow [2023-11-29 22:20:51,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 22:20:51,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-29 22:20:51,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2231 transitions. [2023-11-29 22:20:51,181 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4126896041435442 [2023-11-29 22:20:51,181 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2231 transitions. [2023-11-29 22:20:51,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2231 transitions. [2023-11-29 22:20:51,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:20:51,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2231 transitions. [2023-11-29 22:20:51,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 65.61764705882354) internal successors, (2231), 34 states have internal predecessors, (2231), 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) [2023-11-29 22:20:51,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 159.0) internal successors, (5565), 35 states have internal predecessors, (5565), 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) [2023-11-29 22:20:51,188 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 159.0) internal successors, (5565), 35 states have internal predecessors, (5565), 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) [2023-11-29 22:20:51,189 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 195 predicate places. [2023-11-29 22:20:51,189 INFO L500 AbstractCegarLoop]: Abstraction has has 338 places, 3445 transitions, 71416 flow [2023-11-29 22:20:51,190 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 62.28260869565217) internal successors, (2865), 46 states have internal predecessors, (2865), 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) [2023-11-29 22:20:51,190 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:20:51,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:20:51,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 22:20:51,394 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 22:20:51,394 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:20:51,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:20:51,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1032285831, now seen corresponding path program 1 times [2023-11-29 22:20:51,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:20:51,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598189359] [2023-11-29 22:20:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:51,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:20:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:52,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:20:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598189359] [2023-11-29 22:20:52,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598189359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:20:52,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482862532] [2023-11-29 22:20:52,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:20:52,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:20:52,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:20:52,014 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:20:52,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 22:20:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:20:52,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 22:20:52,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:20:52,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 22:20:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:52,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:20:52,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:20:52,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 16 [2023-11-29 22:20:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 22:20:53,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482862532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:20:53,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:20:53,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 14] total 38 [2023-11-29 22:20:53,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213761391] [2023-11-29 22:20:53,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:20:53,162 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 22:20:53,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:20:53,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 22:20:53,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1221, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 22:20:53,166 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 159 [2023-11-29 22:20:53,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 3445 transitions, 71416 flow. Second operand has 38 states, 38 states have (on average 69.36842105263158) internal successors, (2636), 38 states have internal predecessors, (2636), 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) [2023-11-29 22:20:53,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:20:53,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 159 [2023-11-29 22:20:53,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:21:24,992 INFO L124 PetriNetUnfolderBase]: 47527/76649 cut-off events. [2023-11-29 22:21:24,993 INFO L125 PetriNetUnfolderBase]: For 425010/426162 co-relation queries the response was YES. [2023-11-29 22:21:25,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686489 conditions, 76649 events. 47527/76649 cut-off events. For 425010/426162 co-relation queries the response was YES. Maximal size of possible extension queue 3648. Compared 695056 event pairs, 1264 based on Foata normal form. 113/69600 useless extension candidates. Maximal degree in co-relation 672782. Up to 42008 conditions per place. [2023-11-29 22:21:26,019 INFO L140 encePairwiseOnDemand]: 119/159 looper letters, 6697 selfloop transitions, 3751 changer transitions 126/10630 dead transitions. [2023-11-29 22:21:26,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 10630 transitions, 246226 flow [2023-11-29 22:21:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2023-11-29 22:21:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2023-11-29 22:21:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 7769 transitions. [2023-11-29 22:21:26,038 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.47438480796238625 [2023-11-29 22:21:26,038 INFO L72 ComplementDD]: Start complementDD. Operand 103 states and 7769 transitions. [2023-11-29 22:21:26,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 7769 transitions. [2023-11-29 22:21:26,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:21:26,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 103 states and 7769 transitions. [2023-11-29 22:21:26,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 104 states, 103 states have (on average 75.42718446601941) internal successors, (7769), 103 states have internal predecessors, (7769), 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) [2023-11-29 22:21:26,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 104 states, 104 states have (on average 159.0) internal successors, (16536), 104 states have internal predecessors, (16536), 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) [2023-11-29 22:21:26,059 INFO L81 ComplementDD]: Finished complementDD. Result has 104 states, 104 states have (on average 159.0) internal successors, (16536), 104 states have internal predecessors, (16536), 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) [2023-11-29 22:21:26,059 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 297 predicate places. [2023-11-29 22:21:26,059 INFO L500 AbstractCegarLoop]: Abstraction has has 440 places, 10630 transitions, 246226 flow [2023-11-29 22:21:26,060 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 69.36842105263158) internal successors, (2636), 38 states have internal predecessors, (2636), 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) [2023-11-29 22:21:26,060 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:21:26,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:21:26,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 22:21:26,264 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 22:21:26,265 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:21:26,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:21:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash -444117117, now seen corresponding path program 2 times [2023-11-29 22:21:26,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:21:26,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041288544] [2023-11-29 22:21:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:21:26,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:21:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:21:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:21:27,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:21:27,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041288544] [2023-11-29 22:21:27,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041288544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:21:27,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746443256] [2023-11-29 22:21:27,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:21:27,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:21:27,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:21:27,638 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:21:27,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 22:21:27,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:21:27,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:21:27,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-29 22:21:27,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:21:27,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 22:21:27,813 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 22:21:27,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-29 22:21:28,185 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 22:21:28,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-29 22:21:28,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 22:21:28,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 22:21:28,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 22:21:28,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 22:21:29,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:21:29,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 22:21:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:21:29,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:21:34,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:21:34,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 50 [2023-11-29 22:21:34,754 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:21:34,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1622 treesize of output 1534 [2023-11-29 22:21:34,770 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:21:34,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 88 [2023-11-29 22:21:34,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:21:34,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 72 [2023-11-29 22:21:34,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:21:34,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 71 [2023-11-29 22:21:35,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 22:21:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:21:35,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746443256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:21:35,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:21:35,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 27] total 77 [2023-11-29 22:21:35,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905106584] [2023-11-29 22:21:35,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:21:35,636 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-11-29 22:21:35,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:21:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-11-29 22:21:35,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=883, Invalid=4928, Unknown=41, NotChecked=0, Total=5852 [2023-11-29 22:21:35,641 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 159 [2023-11-29 22:21:35,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 10630 transitions, 246226 flow. Second operand has 77 states, 77 states have (on average 46.05194805194805) internal successors, (3546), 77 states have internal predecessors, (3546), 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) [2023-11-29 22:21:35,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:21:35,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 159 [2023-11-29 22:21:35,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:24:39,966 INFO L124 PetriNetUnfolderBase]: 63595/102481 cut-off events. [2023-11-29 22:24:39,966 INFO L125 PetriNetUnfolderBase]: For 607225/610147 co-relation queries the response was YES. [2023-11-29 22:24:40,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013306 conditions, 102481 events. 63595/102481 cut-off events. For 607225/610147 co-relation queries the response was YES. Maximal size of possible extension queue 5055. Compared 960219 event pairs, 2580 based on Foata normal form. 216/93157 useless extension candidates. Maximal degree in co-relation 840943. Up to 56015 conditions per place. [2023-11-29 22:24:41,715 INFO L140 encePairwiseOnDemand]: 109/159 looper letters, 10861 selfloop transitions, 6354 changer transitions 238/17490 dead transitions. [2023-11-29 22:24:41,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 17490 transitions, 431933 flow [2023-11-29 22:24:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2023-11-29 22:24:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2023-11-29 22:24:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 9032 transitions. [2023-11-29 22:24:41,745 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.33414724380318167 [2023-11-29 22:24:41,745 INFO L72 ComplementDD]: Start complementDD. Operand 170 states and 9032 transitions. [2023-11-29 22:24:41,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 170 states and 9032 transitions. [2023-11-29 22:24:41,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:24:41,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 170 states and 9032 transitions. [2023-11-29 22:24:41,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 171 states, 170 states have (on average 53.129411764705885) internal successors, (9032), 170 states have internal predecessors, (9032), 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) [2023-11-29 22:24:41,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 171 states, 171 states have (on average 159.0) internal successors, (27189), 171 states have internal predecessors, (27189), 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) [2023-11-29 22:24:41,792 INFO L81 ComplementDD]: Finished complementDD. Result has 171 states, 171 states have (on average 159.0) internal successors, (27189), 171 states have internal predecessors, (27189), 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) [2023-11-29 22:24:41,793 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 466 predicate places. [2023-11-29 22:24:41,793 INFO L500 AbstractCegarLoop]: Abstraction has has 609 places, 17490 transitions, 431933 flow [2023-11-29 22:24:41,794 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 46.05194805194805) internal successors, (3546), 77 states have internal predecessors, (3546), 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) [2023-11-29 22:24:41,794 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:24:41,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:24:41,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 22:24:41,999 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 22:24:41,999 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:24:42,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:24:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash 430851373, now seen corresponding path program 2 times [2023-11-29 22:24:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:24:42,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295805651] [2023-11-29 22:24:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:24:42,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:24:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:24:42,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:24:42,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:24:42,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295805651] [2023-11-29 22:24:42,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295805651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:24:42,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399039994] [2023-11-29 22:24:42,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 22:24:42,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:24:42,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:24:42,754 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:24:42,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 22:24:42,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 22:24:42,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:24:42,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 22:24:42,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:24:42,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 22:24:42,917 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 22:24:42,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-29 22:24:42,961 INFO L349 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2023-11-29 22:24:42,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 25 [2023-11-29 22:24:43,276 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-29 22:24:43,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 34 [2023-11-29 22:24:43,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 22:24:43,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 22:24:43,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 22:24:43,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 22:24:43,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 22:24:43,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 22:24:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:24:43,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:24:44,002 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_431 (Array Int Int))) (= (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_431) c_~A~0.base) c_~A~0.offset)) (+ (select (select |c_#memory_int| c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) c_~res1~0))) is different from false [2023-11-29 22:24:44,066 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_430 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_430))) (= (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_431) c_~A~0.base) c_~A~0.offset)) (+ c_~res1~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset))))) is different from false [2023-11-29 22:24:44,132 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_429) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_430))) (= (+ c_~res1~0 (select (select .cse0 |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|)) (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_431) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|))))) is different from false [2023-11-29 22:24:44,302 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_429) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_430))) (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_431) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) c_~res2~0) (+ c_~res1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))))) is different from false [2023-11-29 22:24:44,307 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_429) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_430))) (= (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_431) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (+ (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) c_~res1~0)))) is different from false [2023-11-29 22:24:44,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:24:44,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 43 [2023-11-29 22:24:44,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5142 treesize of output 4822 [2023-11-29 22:24:44,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 116 [2023-11-29 22:24:44,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 55 [2023-11-29 22:24:44,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 54 [2023-11-29 22:24:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 22:24:44,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399039994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:24:44,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:24:44,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 20] total 52 [2023-11-29 22:24:44,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370229169] [2023-11-29 22:24:44,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:24:44,788 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 22:24:44,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:24:44,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 22:24:44,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1896, Unknown=27, NotChecked=470, Total=2652 [2023-11-29 22:24:44,791 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 159 [2023-11-29 22:24:44,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 17490 transitions, 431933 flow. Second operand has 52 states, 52 states have (on average 61.63461538461539) internal successors, (3205), 52 states have internal predecessors, (3205), 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) [2023-11-29 22:24:44,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:24:44,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 159 [2023-11-29 22:24:44,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 22:24:47,147 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_430 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_430))) (= (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_431) c_~A~0.base) c_~A~0.offset)) (+ c_~res1~0 (select (select .cse0 c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)))))) (= |c_thread2Thread1of1ForFork2_~i~1#1| 0) (= c_~res2~0 c_~res1~0) (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_429) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_430))) (= (+ (select (select .cse1 c_~A~0.base) c_~A~0.offset) c_~res1~0) (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_431) c_~A~0.base) c_~A~0.offset) c_~res2~0))))) is different from false [2023-11-29 22:24:47,812 WARN L854 $PredicateComparison]: unable to prove that (and (= |c_thread2Thread1of1ForFork2_~i~1#1| 0) (= c_~res2~0 c_~res1~0) (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int)) (v_ArrVal_431 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_429) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_430))) (= (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~res1~0) (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_431) c_~A~0.base) c_~A~0.offset) c_~res2~0))))) is different from false [2023-11-29 22:30:41,536 INFO L124 PetriNetUnfolderBase]: 77495/124990 cut-off events. [2023-11-29 22:30:41,536 INFO L125 PetriNetUnfolderBase]: For 920201/925883 co-relation queries the response was YES. [2023-11-29 22:30:42,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328462 conditions, 124990 events. 77495/124990 cut-off events. For 920201/925883 co-relation queries the response was YES. Maximal size of possible extension queue 6480. Compared 1203195 event pairs, 2975 based on Foata normal form. 313/113346 useless extension candidates. Maximal degree in co-relation 1105839. Up to 69787 conditions per place. [2023-11-29 22:30:43,754 INFO L140 encePairwiseOnDemand]: 118/159 looper letters, 14390 selfloop transitions, 4384 changer transitions 285/21758 dead transitions. [2023-11-29 22:30:43,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 21758 transitions, 575791 flow [2023-11-29 22:30:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 22:30:43,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 22:30:43,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2161 transitions. [2023-11-29 22:30:43,756 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.4118543929864685 [2023-11-29 22:30:43,756 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2161 transitions. [2023-11-29 22:30:43,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2161 transitions. [2023-11-29 22:30:43,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 22:30:43,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2161 transitions. [2023-11-29 22:30:43,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 65.48484848484848) internal successors, (2161), 33 states have internal predecessors, (2161), 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) [2023-11-29 22:30:43,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 159.0) internal successors, (5406), 34 states have internal predecessors, (5406), 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) [2023-11-29 22:30:43,762 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 159.0) internal successors, (5406), 34 states have internal predecessors, (5406), 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) [2023-11-29 22:30:43,762 INFO L307 CegarLoopForPetriNet]: 143 programPoint places, 498 predicate places. [2023-11-29 22:30:43,762 INFO L500 AbstractCegarLoop]: Abstraction has has 641 places, 21758 transitions, 575791 flow [2023-11-29 22:30:43,763 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 61.63461538461539) internal successors, (3205), 52 states have internal predecessors, (3205), 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) [2023-11-29 22:30:43,763 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 22:30:43,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 22:30:43,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 22:30:43,967 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 22:30:43,968 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 22:30:43,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 22:30:43,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2116564033, now seen corresponding path program 3 times [2023-11-29 22:30:43,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 22:30:43,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056753525] [2023-11-29 22:30:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 22:30:43,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 22:30:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 22:30:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:30:45,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 22:30:45,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056753525] [2023-11-29 22:30:45,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056753525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 22:30:45,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206964866] [2023-11-29 22:30:45,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 22:30:45,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 22:30:45,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 22:30:45,209 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 22:30:45,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 22:30:45,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 22:30:45,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 22:30:45,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 22:30:45,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 22:30:45,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 22:30:46,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 22:30:46,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 22:30:46,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 22:30:46,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 22:30:46,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:30:46,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 22:30:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:30:46,667 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 22:30:47,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:30:47,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 47 [2023-11-29 22:30:47,817 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:30:47,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13174 treesize of output 12158 [2023-11-29 22:30:47,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 156 [2023-11-29 22:30:47,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:30:47,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 72 [2023-11-29 22:30:47,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 22:30:47,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 71 [2023-11-29 22:30:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 22:30:48,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206964866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 22:30:48,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 22:30:48,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 28] total 76 [2023-11-29 22:30:48,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976119884] [2023-11-29 22:30:48,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 22:30:48,441 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-11-29 22:30:48,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 22:30:48,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-11-29 22:30:48,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=621, Invalid=5053, Unknown=26, NotChecked=0, Total=5700 [2023-11-29 22:30:48,447 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 159 [2023-11-29 22:30:48,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 21758 transitions, 575791 flow. Second operand has 76 states, 76 states have (on average 49.0) internal successors, (3724), 76 states have internal predecessors, (3724), 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) [2023-11-29 22:30:48,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 22:30:48,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 159 [2023-11-29 22:30:48,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 22:33:49,303 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 22:33:49,304 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 22:33:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-11-29 22:33:49,410 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 22:33:49,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 22:33:49,615 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 22:33:49,616 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (76states, 46/159 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 429694 conditions, 36660 events (22966/36659 cut-off events. For 269571/272460 co-relation queries the response was YES. Maximal size of possible extension queue 6455. Compared 354116 event pairs, 906 based on Foata normal form. 231/38544 useless extension candidates. Maximal degree in co-relation 405680. Up to 20354 conditions per place.). [2023-11-29 22:33:49,618 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 22:33:49,618 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 22:33:49,618 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 22:33:49,618 INFO L457 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1, 1, 1, 1] [2023-11-29 22:33:49,634 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 22:33:49,634 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 22:33:49,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:33:49 BasicIcfg [2023-11-29 22:33:49,638 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 22:33:49,638 INFO L158 Benchmark]: Toolchain (without parser) took 817733.76ms. Allocated memory was 541.1MB in the beginning and 9.9GB in the end (delta: 9.4GB). Free memory was 497.9MB in the beginning and 7.3GB in the end (delta: -6.8GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-11-29 22:33:49,639 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 390.1MB. Free memory is still 338.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 22:33:49,639 INFO L158 Benchmark]: CACSL2BoogieTranslator took 160.32ms. Allocated memory is still 541.1MB. Free memory was 497.4MB in the beginning and 485.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 22:33:49,639 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.33ms. Allocated memory is still 541.1MB. Free memory was 485.4MB in the beginning and 483.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 22:33:49,640 INFO L158 Benchmark]: Boogie Preprocessor took 28.04ms. Allocated memory is still 541.1MB. Free memory was 483.3MB in the beginning and 481.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 22:33:49,640 INFO L158 Benchmark]: RCFGBuilder took 533.65ms. Allocated memory is still 541.1MB. Free memory was 481.7MB in the beginning and 442.9MB in the end (delta: 38.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-11-29 22:33:49,640 INFO L158 Benchmark]: TraceAbstraction took 816980.36ms. Allocated memory was 541.1MB in the beginning and 9.9GB in the end (delta: 9.4GB). Free memory was 441.9MB in the beginning and 7.3GB in the end (delta: -6.9GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. [2023-11-29 22:33:49,641 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 390.1MB. Free memory is still 338.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 160.32ms. Allocated memory is still 541.1MB. Free memory was 497.4MB in the beginning and 485.9MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.33ms. Allocated memory is still 541.1MB. Free memory was 485.4MB in the beginning and 483.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.04ms. Allocated memory is still 541.1MB. Free memory was 483.3MB in the beginning and 481.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 533.65ms. Allocated memory is still 541.1MB. Free memory was 481.7MB in the beginning and 442.9MB in the end (delta: 38.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * TraceAbstraction took 816980.36ms. Allocated memory was 541.1MB in the beginning and 9.9GB in the end (delta: 9.4GB). Free memory was 441.9MB in the beginning and 7.3GB in the end (delta: -6.9GB). Peak memory consumption was 3.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (76states, 46/159 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 429694 conditions, 36660 events (22966/36659 cut-off events. For 269571/272460 co-relation queries the response was YES. Maximal size of possible extension queue 6455. Compared 354116 event pairs, 906 based on Foata normal form. 231/38544 useless extension candidates. Maximal degree in co-relation 405680. Up to 20354 conditions per place.). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (76states, 46/159 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 429694 conditions, 36660 events (22966/36659 cut-off events. For 269571/272460 co-relation queries the response was YES. Maximal size of possible extension queue 6455. Compared 354116 event pairs, 906 based on Foata normal form. 231/38544 useless extension candidates. Maximal degree in co-relation 405680. Up to 20354 conditions per place.). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (76states, 46/159 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 429694 conditions, 36660 events (22966/36659 cut-off events. For 269571/272460 co-relation queries the response was YES. Maximal size of possible extension queue 6455. Compared 354116 event pairs, 906 based on Foata normal form. 231/38544 useless extension candidates. Maximal degree in co-relation 405680. Up to 20354 conditions per place.). - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (76states, 46/159 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 429694 conditions, 36660 events (22966/36659 cut-off events. For 269571/272460 co-relation queries the response was YES. Maximal size of possible extension queue 6455. Compared 354116 event pairs, 906 based on Foata normal form. 231/38544 useless extension candidates. Maximal degree in co-relation 405680. Up to 20354 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 184 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: 816.9s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 786.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 6915 SdHoareTripleChecker+Valid, 13.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6915 mSDsluCounter, 16048 SdHoareTripleChecker+Invalid, 10.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2414 IncrementalHoareTripleChecker+Unchecked, 14954 mSDsCounter, 320 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28438 IncrementalHoareTripleChecker+Invalid, 31173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 320 mSolverCounterUnsat, 1094 mSDtfsCounter, 28438 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3772 GetRequests, 2798 SyntacticMatches, 25 SemanticMatches, 949 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 43664 ImplicationChecksByTransitivity, 28.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=575791occurred in iteration=15, InterpolantAutomatonStates: 514, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 25.5s InterpolantComputationTime, 3457 NumberOfCodeBlocks, 3446 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 4918 ConstructedInterpolants, 235 QuantifiedInterpolants, 35770 SizeOfPredicates, 191 NumberOfNonLiveVariables, 3714 ConjunctsInSsa, 307 ConjunctsInUnsatCore, 40 InterpolantComputations, 8 PerfectInterpolantSequences, 31/90 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown