/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:32:35,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:32:35,177 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:32:35,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:32:35,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:32:35,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:32:35,204 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:32:35,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:32:35,205 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:32:35,208 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:32:35,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:32:35,208 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:32:35,208 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:32:35,209 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:32:35,209 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:32:35,210 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:32:35,210 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:32:35,210 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:32:35,210 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:32:35,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:32:35,210 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:32:35,211 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:32:35,211 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:32:35,211 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:32:35,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:32:35,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:32:35,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:32:35,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:32:35,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:32:35,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:32:35,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:32:35,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:32:35,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:32:35,214 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:32:35,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:32:35,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:32:35,434 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:32:35,435 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:32:35,444 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:32:35,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2023-12-09 15:32:36,473 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:32:36,645 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:32:36,645 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2023-12-09 15:32:36,652 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c9203312/f7726dfc0c1c4a11a4ff9f0f5af62c20/FLAG8f0b82332 [2023-12-09 15:32:36,666 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c9203312/f7726dfc0c1c4a11a4ff9f0f5af62c20 [2023-12-09 15:32:36,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:32:36,669 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:32:36,672 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:32:36,672 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:32:36,675 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:32:36,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c2473a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36, skipping insertion in model container [2023-12-09 15:32:36,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,698 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:32:36,819 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-send-receive-alt.wvr.c[2676,2689] [2023-12-09 15:32:36,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:32:36,831 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:32:36,849 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-send-receive-alt.wvr.c[2676,2689] [2023-12-09 15:32:36,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:32:36,864 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:32:36,864 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:32:36,869 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:32:36,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36 WrapperNode [2023-12-09 15:32:36,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:32:36,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:32:36,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:32:36,871 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:32:36,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,896 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 149 [2023-12-09 15:32:36,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:32:36,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:32:36,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:32:36,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:32:36,903 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,909 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,910 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,924 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,927 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,931 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:32:36,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:32:36,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:32:36,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:32:36,932 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (1/1) ... [2023-12-09 15:32:36,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:32:36,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:36,974 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 15:32:36,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 15:32:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:32:37,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:32:37,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:32:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:32:37,021 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:32:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:32:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:32:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:32:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:32:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:32:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:32:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:32:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:32:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:32:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:32:37,023 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:32:37,120 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:32:37,122 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:32:37,375 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:32:37,429 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:32:37,429 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 15:32:37,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:32:37 BoogieIcfgContainer [2023-12-09 15:32:37,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:32:37,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:32:37,440 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:32:37,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:32:37,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:32:36" (1/3) ... [2023-12-09 15:32:37,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466f4a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:32:37, skipping insertion in model container [2023-12-09 15:32:37,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:36" (2/3) ... [2023-12-09 15:32:37,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466f4a97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:32:37, skipping insertion in model container [2023-12-09 15:32:37,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:32:37" (3/3) ... [2023-12-09 15:32:37,444 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2023-12-09 15:32:37,457 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:32:37,457 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:32:37,457 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:32:37,505 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:32:37,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 137 transitions, 288 flow [2023-12-09 15:32:37,576 INFO L124 PetriNetUnfolderBase]: 11/135 cut-off events. [2023-12-09 15:32:37,576 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:32:37,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 135 events. 11/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 96 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2023-12-09 15:32:37,581 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 137 transitions, 288 flow [2023-12-09 15:32:37,584 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 126 transitions, 264 flow [2023-12-09 15:32:37,599 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:32:37,604 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;@3abee32e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:32:37,604 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:32:37,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:32:37,644 INFO L124 PetriNetUnfolderBase]: 11/125 cut-off events. [2023-12-09 15:32:37,644 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:32:37,644 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:37,645 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:37,645 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:37,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -593398031, now seen corresponding path program 1 times [2023-12-09 15:32:37,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:37,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270443271] [2023-12-09 15:32:37,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:37,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:37,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:37,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270443271] [2023-12-09 15:32:37,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270443271] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:37,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:37,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 15:32:37,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041807061] [2023-12-09 15:32:37,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:37,919 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 15:32:37,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:37,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 15:32:37,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 15:32:37,944 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 137 [2023-12-09 15:32:37,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 126 transitions, 264 flow. Second operand has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:37,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:37,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 137 [2023-12-09 15:32:37,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:38,008 INFO L124 PetriNetUnfolderBase]: 12/146 cut-off events. [2023-12-09 15:32:38,008 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-12-09 15:32:38,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 146 events. 12/146 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 178 event pairs, 2 based on Foata normal form. 14/146 useless extension candidates. Maximal degree in co-relation 85. Up to 19 conditions per place. [2023-12-09 15:32:38,012 INFO L140 encePairwiseOnDemand]: 130/137 looper letters, 7 selfloop transitions, 0 changer transitions 3/119 dead transitions. [2023-12-09 15:32:38,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 264 flow [2023-12-09 15:32:38,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 15:32:38,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 15:32:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2023-12-09 15:32:38,026 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9416058394160584 [2023-12-09 15:32:38,026 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2023-12-09 15:32:38,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2023-12-09 15:32:38,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:38,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2023-12-09 15:32:38,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,040 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,045 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 1 predicate places. [2023-12-09 15:32:38,046 INFO L500 AbstractCegarLoop]: Abstraction has has 123 places, 119 transitions, 264 flow [2023-12-09 15:32:38,046 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,046 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:38,046 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:38,047 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:32:38,047 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:38,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash -23216541, now seen corresponding path program 1 times [2023-12-09 15:32:38,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:38,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643998387] [2023-12-09 15:32:38,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:38,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:38,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:38,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:38,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643998387] [2023-12-09 15:32:38,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643998387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:38,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:38,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:32:38,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711007634] [2023-12-09 15:32:38,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:38,366 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:32:38,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:38,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:32:38,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:32:38,368 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 137 [2023-12-09 15:32:38,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 119 transitions, 264 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:38,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 137 [2023-12-09 15:32:38,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:38,465 INFO L124 PetriNetUnfolderBase]: 14/175 cut-off events. [2023-12-09 15:32:38,466 INFO L125 PetriNetUnfolderBase]: For 49/59 co-relation queries the response was YES. [2023-12-09 15:32:38,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 175 events. 14/175 cut-off events. For 49/59 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 338 event pairs, 2 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 112. Up to 24 conditions per place. [2023-12-09 15:32:38,468 INFO L140 encePairwiseOnDemand]: 129/137 looper letters, 29 selfloop transitions, 2 changer transitions 8/129 dead transitions. [2023-12-09 15:32:38,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 383 flow [2023-12-09 15:32:38,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:32:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:32:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 740 transitions. [2023-12-09 15:32:38,472 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7716371220020855 [2023-12-09 15:32:38,472 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 740 transitions. [2023-12-09 15:32:38,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 740 transitions. [2023-12-09 15:32:38,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:38,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 740 transitions. [2023-12-09 15:32:38,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 105.71428571428571) internal successors, (740), 7 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 137.0) internal successors, (1096), 8 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,478 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 7 predicate places. [2023-12-09 15:32:38,478 INFO L500 AbstractCegarLoop]: Abstraction has has 129 places, 129 transitions, 383 flow [2023-12-09 15:32:38,478 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,478 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:38,479 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:38,479 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:32:38,479 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:38,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash 134992086, now seen corresponding path program 1 times [2023-12-09 15:32:38,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:38,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930953111] [2023-12-09 15:32:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:38,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:38,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930953111] [2023-12-09 15:32:38,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930953111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:38,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:38,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:32:38,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849566073] [2023-12-09 15:32:38,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:38,600 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:32:38,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:38,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:32:38,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:32:38,601 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 137 [2023-12-09 15:32:38,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 129 transitions, 383 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:38,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 137 [2023-12-09 15:32:38,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:38,660 INFO L124 PetriNetUnfolderBase]: 18/205 cut-off events. [2023-12-09 15:32:38,660 INFO L125 PetriNetUnfolderBase]: For 134/142 co-relation queries the response was YES. [2023-12-09 15:32:38,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345 conditions, 205 events. 18/205 cut-off events. For 134/142 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 404 event pairs, 3 based on Foata normal form. 3/192 useless extension candidates. Maximal degree in co-relation 188. Up to 30 conditions per place. [2023-12-09 15:32:38,661 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 15 selfloop transitions, 3 changer transitions 11/133 dead transitions. [2023-12-09 15:32:38,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 450 flow [2023-12-09 15:32:38,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:32:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:32:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-12-09 15:32:38,664 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8978102189781022 [2023-12-09 15:32:38,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-12-09 15:32:38,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-12-09 15:32:38,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:38,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-12-09 15:32:38,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,667 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 9 predicate places. [2023-12-09 15:32:38,667 INFO L500 AbstractCegarLoop]: Abstraction has has 131 places, 133 transitions, 450 flow [2023-12-09 15:32:38,668 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,668 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:38,668 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:38,668 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:32:38,668 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:38,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:38,669 INFO L85 PathProgramCache]: Analyzing trace with hash 905774723, now seen corresponding path program 1 times [2023-12-09 15:32:38,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:38,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15042614] [2023-12-09 15:32:38,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:38,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:38,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:38,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15042614] [2023-12-09 15:32:38,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15042614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:38,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:38,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:32:38,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760107000] [2023-12-09 15:32:38,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:38,834 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:32:38,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:38,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:32:38,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:32:38,836 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2023-12-09 15:32:38,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 133 transitions, 450 flow. Second operand has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:38,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2023-12-09 15:32:38,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:38,978 INFO L124 PetriNetUnfolderBase]: 27/322 cut-off events. [2023-12-09 15:32:38,979 INFO L125 PetriNetUnfolderBase]: For 333/349 co-relation queries the response was YES. [2023-12-09 15:32:38,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 322 events. 27/322 cut-off events. For 333/349 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1048 event pairs, 4 based on Foata normal form. 2/297 useless extension candidates. Maximal degree in co-relation 216. Up to 45 conditions per place. [2023-12-09 15:32:38,983 INFO L140 encePairwiseOnDemand]: 126/137 looper letters, 27 selfloop transitions, 8 changer transitions 27/153 dead transitions. [2023-12-09 15:32:38,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 153 transitions, 682 flow [2023-12-09 15:32:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:32:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:32:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 977 transitions. [2023-12-09 15:32:38,985 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7923763179237632 [2023-12-09 15:32:38,985 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 977 transitions. [2023-12-09 15:32:38,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 977 transitions. [2023-12-09 15:32:38,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:38,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 977 transitions. [2023-12-09 15:32:38,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.55555555555556) internal successors, (977), 9 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,991 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,992 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 17 predicate places. [2023-12-09 15:32:38,993 INFO L500 AbstractCegarLoop]: Abstraction has has 139 places, 153 transitions, 682 flow [2023-12-09 15:32:38,993 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:38,993 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:38,993 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:38,993 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:32:38,993 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:38,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:38,994 INFO L85 PathProgramCache]: Analyzing trace with hash 965776516, now seen corresponding path program 1 times [2023-12-09 15:32:38,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:38,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736317337] [2023-12-09 15:32:38,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:38,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:39,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:39,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736317337] [2023-12-09 15:32:39,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736317337] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:39,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708044240] [2023-12-09 15:32:39,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:39,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:39,924 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) [2023-12-09 15:32:39,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:32:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:40,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-09 15:32:40,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:40,095 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 [2023-12-09 15:32:40,160 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-09 15:32:40,160 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 [2023-12-09 15:32:40,554 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:32:40,554 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 [2023-12-09 15:32:40,716 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 23 treesize of output 1 [2023-12-09 15:32:41,026 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 [2023-12-09 15:32:41,086 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 [2023-12-09 15:32:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:41,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:42,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:32:42,399 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 63 treesize of output 51 [2023-12-09 15:32:42,411 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:32:42,412 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 152 treesize of output 144 [2023-12-09 15:32:42,427 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:32:42,427 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 132 treesize of output 116 [2023-12-09 15:32:42,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:32:42,440 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 83 treesize of output 79 [2023-12-09 15:32:42,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:32:42,678 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 62 treesize of output 50 [2023-12-09 15:32:42,687 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:32:42,688 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 148 treesize of output 136 [2023-12-09 15:32:42,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:32:42,730 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 89 [2023-12-09 15:32:42,740 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:32:42,740 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 120 treesize of output 100 [2023-12-09 15:32:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:45,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708044240] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:45,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:45,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 23, 23] total 56 [2023-12-09 15:32:45,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695027813] [2023-12-09 15:32:45,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:45,532 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-12-09 15:32:45,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:45,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-12-09 15:32:45,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=2445, Unknown=30, NotChecked=0, Total=3080 [2023-12-09 15:32:45,537 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 137 [2023-12-09 15:32:45,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 153 transitions, 682 flow. Second operand has 56 states, 56 states have (on average 55.94642857142857) internal successors, (3133), 56 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:45,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:45,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 137 [2023-12-09 15:32:45,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:47,736 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (<= c_~sum~0 0)) (.cse1 (<= 0 (+ c_~sum~0 1))) (.cse14 (* c_~front~0 4)) (.cse15 (* c_~back~0 4))) (let ((.cse2 (forall ((|v_ULTIMATE.start_create_fresh_int_array_#t~malloc18#1.base_8| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_#t~malloc18#1.base_8|) 0)) (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_create_fresh_int_array_#t~malloc18#1.base_8| 1))))) (.cse5 (+ c_~queue~0.offset .cse15)) (.cse6 (+ c_~queue~0.offset .cse14)) (.cse3 (< c_~n~0 (+ c_~front~0 1))) (.cse9 (and .cse0 .cse1 (= c_~back~0 c_~front~0))) (.cse8 (< c_~front~0 0))) (and (or (and .cse0 (= c_~back~0 0) .cse1) (not (= c_~front~0 0)) .cse2) (= c_~sum~0 1) (or .cse3 (and (forall ((v_ArrVal_69 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) c_~queue~0.base))) (or (not (= (select .cse4 .cse5) 1)) (< (+ c_~sum~0 (select .cse4 .cse6)) 2)))) (forall ((v_ArrVal_69 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) c_~queue~0.base))) (or (not (= (select .cse7 .cse5) 1)) (< 0 (+ c_~sum~0 (select .cse7 .cse6) 1)))))) .cse8) (or .cse3 (< (+ |c_ULTIMATE.start_create_fresh_int_array_~i~0#1| 1) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse9 .cse8) (or .cse3 (let ((.cse11 (+ .cse15 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (.cse12 (+ .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (and (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (= (select .cse10 .cse11) 1)) (< (+ c_~sum~0 (select .cse10 .cse12)) 2)))) (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse13 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) (or (not (= (select .cse13 .cse11) 1)) (< 0 (+ c_~sum~0 (select .cse13 .cse12) 1))))))) .cse8) (or .cse3 (let ((.cse17 (+ .cse14 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (.cse18 (+ .cse15 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))) (and (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse16 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (or (< 0 (+ (select .cse16 .cse17) c_~sum~0 1)) (not (= (select .cse16 .cse18) 1))))) (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse19 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (or (< (+ (select .cse19 .cse17) c_~sum~0) 2) (not (= (select .cse19 .cse18) 1))))))) .cse8) (or .cse3 .cse9 (< 1 |c_ULTIMATE.start_create_fresh_int_array_#in~size#1|) .cse2 .cse8) (or .cse3 .cse8 (and (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse20 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) c_~queue~0.base))) (or (< (+ c_~sum~0 (select .cse20 .cse6)) 2) (not (= (select .cse20 .cse5) 1))))) (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse21 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) c_~queue~0.base))) (or (< 0 (+ c_~sum~0 1 (select .cse21 .cse6))) (not (= (select .cse21 .cse5) 1))))))) (or .cse3 .cse8 (let ((.cse23 (+ .cse14 |c_ULTIMATE.start_main_#t~ret11#1.offset|)) (.cse24 (+ .cse15 |c_ULTIMATE.start_main_#t~ret11#1.offset|))) (and (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse22 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_main_#t~ret11#1.base|))) (or (< (+ c_~sum~0 (select .cse22 .cse23)) 2) (not (= (select .cse22 .cse24) 1))))) (forall ((v_ArrVal_68 (Array Int Int)) (v_ArrVal_69 (Array Int Int))) (let ((.cse25 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_68) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_69) |c_ULTIMATE.start_main_#t~ret11#1.base|))) (or (< 0 (+ c_~sum~0 (select .cse25 .cse23) 1)) (not (= (select .cse25 .cse24) 1)))))))) (or .cse3 (let ((.cse26 (+ c_~sum~0 (select (select |c_#memory_int| c_~queue~0.base) .cse6)))) (and (<= .cse26 1) (<= 0 .cse26))) .cse8) (or .cse3 (< 1 |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse9 .cse8)))) is different from false [2023-12-09 15:32:49,235 INFO L124 PetriNetUnfolderBase]: 218/1320 cut-off events. [2023-12-09 15:32:49,235 INFO L125 PetriNetUnfolderBase]: For 2462/2656 co-relation queries the response was YES. [2023-12-09 15:32:49,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3128 conditions, 1320 events. 218/1320 cut-off events. For 2462/2656 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9393 event pairs, 13 based on Foata normal form. 26/1195 useless extension candidates. Maximal degree in co-relation 1475. Up to 281 conditions per place. [2023-12-09 15:32:49,241 INFO L140 encePairwiseOnDemand]: 101/137 looper letters, 116 selfloop transitions, 54 changer transitions 98/316 dead transitions. [2023-12-09 15:32:49,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 316 transitions, 2278 flow [2023-12-09 15:32:49,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-09 15:32:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-12-09 15:32:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 3641 transitions. [2023-12-09 15:32:49,250 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41526003649635035 [2023-12-09 15:32:49,250 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 3641 transitions. [2023-12-09 15:32:49,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 3641 transitions. [2023-12-09 15:32:49,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:49,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 3641 transitions. [2023-12-09 15:32:49,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 56.890625) internal successors, (3641), 64 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:49,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 137.0) internal successors, (8905), 65 states have internal predecessors, (8905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:49,272 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 137.0) internal successors, (8905), 65 states have internal predecessors, (8905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:49,274 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 80 predicate places. [2023-12-09 15:32:49,274 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 316 transitions, 2278 flow [2023-12-09 15:32:49,275 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 55.94642857142857) internal successors, (3133), 56 states have internal predecessors, (3133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:49,275 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:49,275 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:49,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:32:49,479 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 [2023-12-09 15:32:49,480 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:49,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -594400514, now seen corresponding path program 1 times [2023-12-09 15:32:49,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:49,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267991096] [2023-12-09 15:32:49,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-09 15:32:49,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:49,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267991096] [2023-12-09 15:32:49,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267991096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:49,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:49,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:32:49,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421345184] [2023-12-09 15:32:49,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:49,540 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:32:49,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:49,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:32:49,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:32:49,541 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 137 [2023-12-09 15:32:49,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 316 transitions, 2278 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:49,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:49,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 137 [2023-12-09 15:32:49,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:49,714 INFO L124 PetriNetUnfolderBase]: 320/1647 cut-off events. [2023-12-09 15:32:49,714 INFO L125 PetriNetUnfolderBase]: For 4974/4986 co-relation queries the response was YES. [2023-12-09 15:32:49,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4400 conditions, 1647 events. 320/1647 cut-off events. For 4974/4986 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 12574 event pairs, 30 based on Foata normal form. 2/1458 useless extension candidates. Maximal degree in co-relation 2540. Up to 434 conditions per place. [2023-12-09 15:32:49,722 INFO L140 encePairwiseOnDemand]: 134/137 looper letters, 58 selfloop transitions, 2 changer transitions 95/316 dead transitions. [2023-12-09 15:32:49,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 316 transitions, 2527 flow [2023-12-09 15:32:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:32:49,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:32:49,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-12-09 15:32:49,723 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9051094890510949 [2023-12-09 15:32:49,723 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-12-09 15:32:49,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-12-09 15:32:49,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:49,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-12-09 15:32:49,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:49,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:49,725 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:49,727 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 80 predicate places. [2023-12-09 15:32:49,727 INFO L500 AbstractCegarLoop]: Abstraction has has 202 places, 316 transitions, 2527 flow [2023-12-09 15:32:49,727 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:49,728 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:49,728 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:49,728 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:32:49,728 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:49,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1886106167, now seen corresponding path program 2 times [2023-12-09 15:32:49,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:49,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865015229] [2023-12-09 15:32:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:49,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:32:49,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:49,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865015229] [2023-12-09 15:32:49,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865015229] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:49,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:49,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 15:32:49,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735290974] [2023-12-09 15:32:49,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:49,805 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:32:49,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:49,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:32:49,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-09 15:32:49,806 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 137 [2023-12-09 15:32:49,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 316 transitions, 2527 flow. Second operand has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:49,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:49,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 137 [2023-12-09 15:32:49,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:50,046 INFO L124 PetriNetUnfolderBase]: 464/2442 cut-off events. [2023-12-09 15:32:50,047 INFO L125 PetriNetUnfolderBase]: For 10832/10861 co-relation queries the response was YES. [2023-12-09 15:32:50,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7042 conditions, 2442 events. 464/2442 cut-off events. For 10832/10861 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 20789 event pairs, 70 based on Foata normal form. 51/2203 useless extension candidates. Maximal degree in co-relation 4051. Up to 667 conditions per place. [2023-12-09 15:32:50,060 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 72 selfloop transitions, 33 changer transitions 105/361 dead transitions. [2023-12-09 15:32:50,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 361 transitions, 3467 flow [2023-12-09 15:32:50,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 15:32:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 15:32:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 492 transitions. [2023-12-09 15:32:50,062 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8978102189781022 [2023-12-09 15:32:50,062 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 492 transitions. [2023-12-09 15:32:50,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 492 transitions. [2023-12-09 15:32:50,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:50,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 492 transitions. [2023-12-09 15:32:50,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:50,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:50,064 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:50,064 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 83 predicate places. [2023-12-09 15:32:50,065 INFO L500 AbstractCegarLoop]: Abstraction has has 205 places, 361 transitions, 3467 flow [2023-12-09 15:32:50,065 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.0) internal successors, (480), 4 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:50,065 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:50,065 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:50,065 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:32:50,065 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:50,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:50,067 INFO L85 PathProgramCache]: Analyzing trace with hash 230916193, now seen corresponding path program 3 times [2023-12-09 15:32:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:50,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877391589] [2023-12-09 15:32:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:50,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:32:50,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:50,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877391589] [2023-12-09 15:32:50,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877391589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:50,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:50,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 15:32:50,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993998836] [2023-12-09 15:32:50,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:50,247 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:32:50,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:50,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:32:50,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 15:32:50,248 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 137 [2023-12-09 15:32:50,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 361 transitions, 3467 flow. Second operand has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:50,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:50,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 137 [2023-12-09 15:32:50,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:50,556 INFO L124 PetriNetUnfolderBase]: 482/3053 cut-off events. [2023-12-09 15:32:50,557 INFO L125 PetriNetUnfolderBase]: For 12544/12635 co-relation queries the response was YES. [2023-12-09 15:32:50,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8970 conditions, 3053 events. 482/3053 cut-off events. For 12544/12635 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 27831 event pairs, 53 based on Foata normal form. 18/2778 useless extension candidates. Maximal degree in co-relation 5521. Up to 702 conditions per place. [2023-12-09 15:32:50,572 INFO L140 encePairwiseOnDemand]: 133/137 looper letters, 94 selfloop transitions, 4 changer transitions 119/386 dead transitions. [2023-12-09 15:32:50,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 386 transitions, 4257 flow [2023-12-09 15:32:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 15:32:50,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 15:32:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 490 transitions. [2023-12-09 15:32:50,574 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8941605839416058 [2023-12-09 15:32:50,574 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 490 transitions. [2023-12-09 15:32:50,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 490 transitions. [2023-12-09 15:32:50,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:50,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 490 transitions. [2023-12-09 15:32:50,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:50,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:50,576 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:50,577 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 86 predicate places. [2023-12-09 15:32:50,577 INFO L500 AbstractCegarLoop]: Abstraction has has 208 places, 386 transitions, 4257 flow [2023-12-09 15:32:50,577 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:50,577 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:50,578 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:50,578 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:32:50,578 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:50,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1383095999, now seen corresponding path program 1 times [2023-12-09 15:32:50,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:50,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805823871] [2023-12-09 15:32:50,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:50,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:50,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:50,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805823871] [2023-12-09 15:32:50,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805823871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:50,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762854430] [2023-12-09 15:32:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:50,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:50,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:50,819 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) [2023-12-09 15:32:50,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:32:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:50,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:32:50,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:51,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:51,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:51,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762854430] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:51,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:51,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 29 [2023-12-09 15:32:51,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863034473] [2023-12-09 15:32:51,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:51,635 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-09 15:32:51,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:51,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-09 15:32:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2023-12-09 15:32:51,637 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 137 [2023-12-09 15:32:51,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 386 transitions, 4257 flow. Second operand has 29 states, 29 states have (on average 96.3103448275862) internal successors, (2793), 29 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:51,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:51,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 137 [2023-12-09 15:32:51,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:52,943 INFO L124 PetriNetUnfolderBase]: 1212/5281 cut-off events. [2023-12-09 15:32:52,943 INFO L125 PetriNetUnfolderBase]: For 51245/52444 co-relation queries the response was YES. [2023-12-09 15:32:52,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19875 conditions, 5281 events. 1212/5281 cut-off events. For 51245/52444 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 53198 event pairs, 131 based on Foata normal form. 108/4926 useless extension candidates. Maximal degree in co-relation 10253. Up to 1413 conditions per place. [2023-12-09 15:32:52,967 INFO L140 encePairwiseOnDemand]: 115/137 looper letters, 154 selfloop transitions, 49 changer transitions 270/586 dead transitions. [2023-12-09 15:32:52,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 586 transitions, 8409 flow [2023-12-09 15:32:52,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:32:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 15:32:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3393 transitions. [2023-12-09 15:32:52,972 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7076120959332638 [2023-12-09 15:32:52,972 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3393 transitions. [2023-12-09 15:32:52,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3393 transitions. [2023-12-09 15:32:52,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:52,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3393 transitions. [2023-12-09 15:32:52,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 96.94285714285714) internal successors, (3393), 35 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:52,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 137.0) internal successors, (4932), 36 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:52,984 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 137.0) internal successors, (4932), 36 states have internal predecessors, (4932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:52,984 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 120 predicate places. [2023-12-09 15:32:52,984 INFO L500 AbstractCegarLoop]: Abstraction has has 242 places, 586 transitions, 8409 flow [2023-12-09 15:32:52,985 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 96.3103448275862) internal successors, (2793), 29 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:52,985 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:52,986 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:52,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:32:53,196 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,SelfDestructingSolverStorable8 [2023-12-09 15:32:53,196 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:53,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1486594903, now seen corresponding path program 2 times [2023-12-09 15:32:53,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:53,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738289229] [2023-12-09 15:32:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:53,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:53,487 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:53,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:53,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738289229] [2023-12-09 15:32:53,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738289229] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:53,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306689896] [2023-12-09 15:32:53,488 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:32:53,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:53,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:53,489 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) [2023-12-09 15:32:53,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:32:53,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:32:53,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:32:53,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:32:53,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:53,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:54,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306689896] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:54,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:54,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 33 [2023-12-09 15:32:54,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327710261] [2023-12-09 15:32:54,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:54,591 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-09 15:32:54,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:54,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-09 15:32:54,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=858, Unknown=0, NotChecked=0, Total=1056 [2023-12-09 15:32:54,594 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 137 [2023-12-09 15:32:54,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 586 transitions, 8409 flow. Second operand has 33 states, 33 states have (on average 96.21212121212122) internal successors, (3175), 33 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:54,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:54,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 137 [2023-12-09 15:32:54,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:55,857 INFO L124 PetriNetUnfolderBase]: 656/2711 cut-off events. [2023-12-09 15:32:55,858 INFO L125 PetriNetUnfolderBase]: For 32423/32591 co-relation queries the response was YES. [2023-12-09 15:32:55,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12432 conditions, 2711 events. 656/2711 cut-off events. For 32423/32591 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 22103 event pairs, 75 based on Foata normal form. 88/2557 useless extension candidates. Maximal degree in co-relation 8801. Up to 862 conditions per place. [2023-12-09 15:32:55,880 INFO L140 encePairwiseOnDemand]: 113/137 looper letters, 120 selfloop transitions, 32 changer transitions 183/439 dead transitions. [2023-12-09 15:32:55,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 439 transitions, 6017 flow [2023-12-09 15:32:55,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-09 15:32:55,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-12-09 15:32:55,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3193 transitions. [2023-12-09 15:32:55,883 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7062596770625967 [2023-12-09 15:32:55,883 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3193 transitions. [2023-12-09 15:32:55,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3193 transitions. [2023-12-09 15:32:55,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:55,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3193 transitions. [2023-12-09 15:32:55,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 96.75757575757575) internal successors, (3193), 33 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:55,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 137.0) internal successors, (4658), 34 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:55,904 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 137.0) internal successors, (4658), 34 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:55,905 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 150 predicate places. [2023-12-09 15:32:55,905 INFO L500 AbstractCegarLoop]: Abstraction has has 272 places, 439 transitions, 6017 flow [2023-12-09 15:32:55,905 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 96.21212121212122) internal successors, (3175), 33 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:55,905 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:55,906 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:55,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-09 15:32:56,110 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:56,111 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:56,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:56,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1355205481, now seen corresponding path program 3 times [2023-12-09 15:32:56,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:56,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621282330] [2023-12-09 15:32:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:56,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:56,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:56,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621282330] [2023-12-09 15:32:56,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621282330] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:56,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423658503] [2023-12-09 15:32:56,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:32:56,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:56,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:56,374 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) [2023-12-09 15:32:56,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:32:56,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:32:56,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:32:56,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:32:56,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:32:56,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:56,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-09 15:32:56,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423658503] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:56,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:56,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2023-12-09 15:32:56,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042849922] [2023-12-09 15:32:56,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:56,950 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-09 15:32:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:56,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-09 15:32:56,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=571, Unknown=0, NotChecked=0, Total=650 [2023-12-09 15:32:56,953 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 137 [2023-12-09 15:32:56,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 439 transitions, 6017 flow. Second operand has 26 states, 26 states have (on average 96.3076923076923) internal successors, (2504), 26 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:56,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:56,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 137 [2023-12-09 15:32:56,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:58,138 INFO L124 PetriNetUnfolderBase]: 666/2850 cut-off events. [2023-12-09 15:32:58,139 INFO L125 PetriNetUnfolderBase]: For 35013/35411 co-relation queries the response was YES. [2023-12-09 15:32:58,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14009 conditions, 2850 events. 666/2850 cut-off events. For 35013/35411 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 23731 event pairs, 96 based on Foata normal form. 36/2637 useless extension candidates. Maximal degree in co-relation 9927. Up to 895 conditions per place. [2023-12-09 15:32:58,160 INFO L140 encePairwiseOnDemand]: 114/137 looper letters, 121 selfloop transitions, 28 changer transitions 198/450 dead transitions. [2023-12-09 15:32:58,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 450 transitions, 6865 flow [2023-12-09 15:32:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-12-09 15:32:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-12-09 15:32:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2701 transitions. [2023-12-09 15:32:58,163 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.704118873826903 [2023-12-09 15:32:58,163 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2701 transitions. [2023-12-09 15:32:58,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2701 transitions. [2023-12-09 15:32:58,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:58,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2701 transitions. [2023-12-09 15:32:58,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 96.46428571428571) internal successors, (2701), 28 states have internal predecessors, (2701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:58,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 137.0) internal successors, (3973), 29 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:58,172 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 137.0) internal successors, (3973), 29 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:58,173 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 177 predicate places. [2023-12-09 15:32:58,173 INFO L500 AbstractCegarLoop]: Abstraction has has 299 places, 450 transitions, 6865 flow [2023-12-09 15:32:58,173 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 96.3076923076923) internal successors, (2504), 26 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:58,173 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:58,174 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:32:58,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:32:58,378 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:58,381 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:32:58,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:58,382 INFO L85 PathProgramCache]: Analyzing trace with hash -526759953, now seen corresponding path program 4 times [2023-12-09 15:32:58,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:58,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477120065] [2023-12-09 15:32:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:58,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:58,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:58,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477120065] [2023-12-09 15:32:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477120065] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447356553] [2023-12-09 15:32:58,636 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:32:58,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:58,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:58,637 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) [2023-12-09 15:32:58,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:32:58,709 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:32:58,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:32:58,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:32:58,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:59,144 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:59,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:59,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447356553] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:59,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:59,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 31 [2023-12-09 15:32:59,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546123604] [2023-12-09 15:32:59,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:59,681 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-09 15:32:59,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:59,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-09 15:32:59,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=769, Unknown=0, NotChecked=0, Total=930 [2023-12-09 15:32:59,683 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 137 [2023-12-09 15:32:59,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 450 transitions, 6865 flow. Second operand has 31 states, 31 states have (on average 96.2258064516129) internal successors, (2983), 31 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:32:59,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:59,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 137 [2023-12-09 15:32:59,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:33:01,186 INFO L124 PetriNetUnfolderBase]: 637/2679 cut-off events. [2023-12-09 15:33:01,186 INFO L125 PetriNetUnfolderBase]: For 36481/36681 co-relation queries the response was YES. [2023-12-09 15:33:01,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14749 conditions, 2679 events. 637/2679 cut-off events. For 36481/36681 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 21696 event pairs, 57 based on Foata normal form. 43/2499 useless extension candidates. Maximal degree in co-relation 10927. Up to 910 conditions per place. [2023-12-09 15:33:01,204 INFO L140 encePairwiseOnDemand]: 112/137 looper letters, 103 selfloop transitions, 22 changer transitions 212/432 dead transitions. [2023-12-09 15:33:01,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 432 transitions, 7058 flow [2023-12-09 15:33:01,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-09 15:33:01,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-12-09 15:33:01,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3561 transitions. [2023-12-09 15:33:01,208 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7025054251331624 [2023-12-09 15:33:01,208 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3561 transitions. [2023-12-09 15:33:01,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3561 transitions. [2023-12-09 15:33:01,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:33:01,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3561 transitions. [2023-12-09 15:33:01,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 96.24324324324324) internal successors, (3561), 37 states have internal predecessors, (3561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:01,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 137.0) internal successors, (5206), 38 states have internal predecessors, (5206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:01,217 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 137.0) internal successors, (5206), 38 states have internal predecessors, (5206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:01,218 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 210 predicate places. [2023-12-09 15:33:01,218 INFO L500 AbstractCegarLoop]: Abstraction has has 332 places, 432 transitions, 7058 flow [2023-12-09 15:33:01,218 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 96.2258064516129) internal successors, (2983), 31 states have internal predecessors, (2983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:01,218 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:33:01,219 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:33:01,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:33:01,423 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-09 15:33:01,423 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:33:01,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:33:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1197351989, now seen corresponding path program 5 times [2023-12-09 15:33:01,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:33:01,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114483533] [2023-12-09 15:33:01,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:33:01,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:33:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:33:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:02,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:33:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114483533] [2023-12-09 15:33:02,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114483533] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:33:02,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368742697] [2023-12-09 15:33:02,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:33:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:02,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:33:02,406 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) [2023-12-09 15:33:02,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:33:02,489 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:33:02,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:33:02,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-09 15:33:02,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:33:02,500 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 [2023-12-09 15:33:02,527 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-09 15:33:02,527 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 [2023-12-09 15:33:02,856 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 15:33:02,856 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 [2023-12-09 15:33:03,182 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 [2023-12-09 15:33:03,582 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 [2023-12-09 15:33:03,662 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 [2023-12-09 15:33:04,131 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:33:04,133 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:04,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 17 [2023-12-09 15:33:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:04,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:33:07,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:07,033 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 122 treesize of output 86 [2023-12-09 15:33:07,057 INFO L349 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-12-09 15:33:07,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 262 treesize of output 255 [2023-12-09 15:33:07,102 INFO L349 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-12-09 15:33:07,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 229 treesize of output 205 [2023-12-09 15:33:07,134 INFO L349 Elim1Store]: treesize reduction 18, result has 60.0 percent of original size [2023-12-09 15:33:07,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 152 treesize of output 153 [2023-12-09 15:33:08,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:08,093 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 123 treesize of output 87 [2023-12-09 15:33:08,116 INFO L349 Elim1Store]: treesize reduction 36, result has 20.0 percent of original size [2023-12-09 15:33:08,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 562 treesize of output 504 [2023-12-09 15:33:08,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:33:08,131 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:33:08,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:33:08,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 154 [2023-12-09 15:33:08,151 INFO L349 Elim1Store]: treesize reduction 36, result has 20.0 percent of original size [2023-12-09 15:33:08,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 177 treesize of output 135 [2023-12-09 15:33:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:11,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368742697] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:33:11,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:33:11,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 26] total 66 [2023-12-09 15:33:11,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083095197] [2023-12-09 15:33:11,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:33:11,577 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-09 15:33:11,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:33:11,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-09 15:33:11,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=592, Invalid=3651, Unknown=47, NotChecked=0, Total=4290 [2023-12-09 15:33:11,580 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 137 [2023-12-09 15:33:11,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 432 transitions, 7058 flow. Second operand has 66 states, 66 states have (on average 55.878787878787875) internal successors, (3688), 66 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:11,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:33:11,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 137 [2023-12-09 15:33:11,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:33:20,323 INFO L124 PetriNetUnfolderBase]: 1316/5512 cut-off events. [2023-12-09 15:33:20,324 INFO L125 PetriNetUnfolderBase]: For 93262/93797 co-relation queries the response was YES. [2023-12-09 15:33:20,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32281 conditions, 5512 events. 1316/5512 cut-off events. For 93262/93797 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 53119 event pairs, 127 based on Foata normal form. 126/5171 useless extension candidates. Maximal degree in co-relation 18398. Up to 2027 conditions per place. [2023-12-09 15:33:20,358 INFO L140 encePairwiseOnDemand]: 102/137 looper letters, 135 selfloop transitions, 98 changer transitions 423/712 dead transitions. [2023-12-09 15:33:20,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 712 transitions, 13795 flow [2023-12-09 15:33:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-09 15:33:20,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-12-09 15:33:20,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 4631 transitions. [2023-12-09 15:33:20,370 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41223072814669753 [2023-12-09 15:33:20,371 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 4631 transitions. [2023-12-09 15:33:20,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 4631 transitions. [2023-12-09 15:33:20,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:33:20,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 4631 transitions. [2023-12-09 15:33:20,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 56.47560975609756) internal successors, (4631), 82 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:20,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 137.0) internal successors, (11371), 83 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:20,398 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 137.0) internal successors, (11371), 83 states have internal predecessors, (11371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:20,399 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 291 predicate places. [2023-12-09 15:33:20,399 INFO L500 AbstractCegarLoop]: Abstraction has has 413 places, 712 transitions, 13795 flow [2023-12-09 15:33:20,400 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 55.878787878787875) internal successors, (3688), 66 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:20,400 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:33:20,400 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:33:20,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-09 15:33:20,608 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:20,608 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:33:20,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:33:20,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1904203527, now seen corresponding path program 6 times [2023-12-09 15:33:20,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:33:20,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112762012] [2023-12-09 15:33:20,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:33:20,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:33:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:33:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:21,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:33:21,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112762012] [2023-12-09 15:33:21,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112762012] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:33:21,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190967625] [2023-12-09 15:33:21,598 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:33:21,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:21,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:33:21,599 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) [2023-12-09 15:33:21,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:33:21,784 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-09 15:33:21,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:33:21,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 56 conjunts are in the unsatisfiable core [2023-12-09 15:33:21,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:33:22,417 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 [2023-12-09 15:33:22,758 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 [2023-12-09 15:33:22,827 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 [2023-12-09 15:33:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:23,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:33:24,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:24,944 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 124 treesize of output 88 [2023-12-09 15:33:24,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:24,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 570 treesize of output 538 [2023-12-09 15:33:25,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:25,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 180 treesize of output 190 [2023-12-09 15:33:25,032 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:25,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 163 [2023-12-09 15:33:25,819 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:25,820 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 123 treesize of output 87 [2023-12-09 15:33:25,833 INFO L349 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-12-09 15:33:25,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 266 treesize of output 240 [2023-12-09 15:33:25,850 INFO L349 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-12-09 15:33:25,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 232 treesize of output 188 [2023-12-09 15:33:25,878 INFO L349 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-12-09 15:33:25,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 153 treesize of output 135 [2023-12-09 15:33:25,952 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-12-09 15:33:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:26,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190967625] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:33:26,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:33:26,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 26, 23] total 63 [2023-12-09 15:33:26,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035175343] [2023-12-09 15:33:26,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:33:26,583 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-09 15:33:26,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:33:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-09 15:33:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=3060, Unknown=37, NotChecked=0, Total=3906 [2023-12-09 15:33:26,586 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 137 [2023-12-09 15:33:26,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 712 transitions, 13795 flow. Second operand has 63 states, 63 states have (on average 58.96825396825397) internal successors, (3715), 63 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:26,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:33:26,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 137 [2023-12-09 15:33:26,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:33:33,920 INFO L124 PetriNetUnfolderBase]: 1949/7796 cut-off events. [2023-12-09 15:33:33,920 INFO L125 PetriNetUnfolderBase]: For 150276/151391 co-relation queries the response was YES. [2023-12-09 15:33:33,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48996 conditions, 7796 events. 1949/7796 cut-off events. For 150276/151391 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 80114 event pairs, 200 based on Foata normal form. 86/7235 useless extension candidates. Maximal degree in co-relation 24099. Up to 3015 conditions per place. [2023-12-09 15:33:33,959 INFO L140 encePairwiseOnDemand]: 103/137 looper letters, 120 selfloop transitions, 72 changer transitions 655/906 dead transitions. [2023-12-09 15:33:33,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 906 transitions, 19465 flow [2023-12-09 15:33:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-09 15:33:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-12-09 15:33:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 5367 transitions. [2023-12-09 15:33:33,963 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43527980535279803 [2023-12-09 15:33:33,963 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 5367 transitions. [2023-12-09 15:33:33,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 5367 transitions. [2023-12-09 15:33:33,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:33:33,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 5367 transitions. [2023-12-09 15:33:33,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 59.63333333333333) internal successors, (5367), 90 states have internal predecessors, (5367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:33,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 137.0) internal successors, (12467), 91 states have internal predecessors, (12467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:33,981 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 137.0) internal successors, (12467), 91 states have internal predecessors, (12467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:33,981 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 380 predicate places. [2023-12-09 15:33:33,981 INFO L500 AbstractCegarLoop]: Abstraction has has 502 places, 906 transitions, 19465 flow [2023-12-09 15:33:33,982 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 58.96825396825397) internal successors, (3715), 63 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:33,982 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:33:33,982 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:33:33,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:33:34,187 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:34,187 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:33:34,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:33:34,187 INFO L85 PathProgramCache]: Analyzing trace with hash -783382798, now seen corresponding path program 7 times [2023-12-09 15:33:34,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:33:34,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468827305] [2023-12-09 15:33:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:33:34,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:33:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:33:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:35,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:33:35,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468827305] [2023-12-09 15:33:35,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468827305] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:33:35,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512178832] [2023-12-09 15:33:35,966 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:33:35,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:35,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:33:35,967 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) [2023-12-09 15:33:35,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:33:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:33:36,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-09 15:33:36,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:33:36,856 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:36,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:33:37,229 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-12-09 15:33:37,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 50 [2023-12-09 15:33:38,491 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:38,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512178832] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:33:38,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:33:38,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 19] total 50 [2023-12-09 15:33:38,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538338887] [2023-12-09 15:33:38,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:33:38,492 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-09 15:33:38,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:33:38,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-09 15:33:38,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1978, Unknown=0, NotChecked=0, Total=2450 [2023-12-09 15:33:38,494 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 137 [2023-12-09 15:33:38,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 906 transitions, 19465 flow. Second operand has 50 states, 50 states have (on average 66.52) internal successors, (3326), 50 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:38,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:33:38,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 137 [2023-12-09 15:33:38,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:33:43,496 INFO L124 PetriNetUnfolderBase]: 3136/12513 cut-off events. [2023-12-09 15:33:43,497 INFO L125 PetriNetUnfolderBase]: For 279592/281547 co-relation queries the response was YES. [2023-12-09 15:33:43,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82163 conditions, 12513 events. 3136/12513 cut-off events. For 279592/281547 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 140590 event pairs, 380 based on Foata normal form. 98/11560 useless extension candidates. Maximal degree in co-relation 33903. Up to 4922 conditions per place. [2023-12-09 15:33:43,563 INFO L140 encePairwiseOnDemand]: 106/137 looper letters, 270 selfloop transitions, 142 changer transitions 859/1333 dead transitions. [2023-12-09 15:33:43,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 1333 transitions, 31853 flow [2023-12-09 15:33:43,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-09 15:33:43,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-12-09 15:33:43,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 5951 transitions. [2023-12-09 15:33:43,568 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48806692364471416 [2023-12-09 15:33:43,568 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 5951 transitions. [2023-12-09 15:33:43,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 5951 transitions. [2023-12-09 15:33:43,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:33:43,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 5951 transitions. [2023-12-09 15:33:43,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 66.86516853932584) internal successors, (5951), 89 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:43,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 137.0) internal successors, (12330), 90 states have internal predecessors, (12330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:43,584 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 137.0) internal successors, (12330), 90 states have internal predecessors, (12330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:43,584 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 468 predicate places. [2023-12-09 15:33:43,584 INFO L500 AbstractCegarLoop]: Abstraction has has 590 places, 1333 transitions, 31853 flow [2023-12-09 15:33:43,585 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 66.52) internal successors, (3326), 50 states have internal predecessors, (3326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:43,585 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:33:43,585 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:33:43,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:33:43,790 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,SelfDestructingSolverStorable14 [2023-12-09 15:33:43,791 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:33:43,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:33:43,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1855830447, now seen corresponding path program 8 times [2023-12-09 15:33:43,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:33:43,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686132564] [2023-12-09 15:33:43,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:33:43,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:33:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:33:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-09 15:33:43,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:33:43,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686132564] [2023-12-09 15:33:43,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686132564] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:33:43,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472493893] [2023-12-09 15:33:43,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:33:43,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:43,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:33:43,892 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) [2023-12-09 15:33:43,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:33:43,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:33:43,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:33:43,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-09 15:33:43,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:33:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-09 15:33:44,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:33:44,256 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-09 15:33:44,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472493893] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:33:44,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:33:44,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 7] total 10 [2023-12-09 15:33:44,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979455700] [2023-12-09 15:33:44,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:33:44,257 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:33:44,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:33:44,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:33:44,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:33:44,258 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 137 [2023-12-09 15:33:44,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 1333 transitions, 31853 flow. Second operand has 10 states, 10 states have (on average 119.5) internal successors, (1195), 10 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:44,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:33:44,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 137 [2023-12-09 15:33:44,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:33:48,175 INFO L124 PetriNetUnfolderBase]: 4119/16161 cut-off events. [2023-12-09 15:33:48,175 INFO L125 PetriNetUnfolderBase]: For 432545/434446 co-relation queries the response was YES. [2023-12-09 15:33:48,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112487 conditions, 16161 events. 4119/16161 cut-off events. For 432545/434446 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 189216 event pairs, 425 based on Foata normal form. 169/14963 useless extension candidates. Maximal degree in co-relation 50511. Up to 6604 conditions per place. [2023-12-09 15:33:48,303 INFO L140 encePairwiseOnDemand]: 131/137 looper letters, 267 selfloop transitions, 125 changer transitions 979/1576 dead transitions. [2023-12-09 15:33:48,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 1576 transitions, 41829 flow [2023-12-09 15:33:48,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:33:48,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:33:48,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 732 transitions. [2023-12-09 15:33:48,305 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8905109489051095 [2023-12-09 15:33:48,305 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 732 transitions. [2023-12-09 15:33:48,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 732 transitions. [2023-12-09 15:33:48,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:33:48,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 732 transitions. [2023-12-09 15:33:48,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.0) internal successors, (732), 6 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:48,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:48,307 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 137.0) internal successors, (959), 7 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:48,307 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 473 predicate places. [2023-12-09 15:33:48,307 INFO L500 AbstractCegarLoop]: Abstraction has has 595 places, 1576 transitions, 41829 flow [2023-12-09 15:33:48,308 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.5) internal successors, (1195), 10 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:48,308 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:33:48,308 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:33:48,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:33:48,516 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,SelfDestructingSolverStorable15 [2023-12-09 15:33:48,516 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:33:48,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:33:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2060843083, now seen corresponding path program 9 times [2023-12-09 15:33:48,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:33:48,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390749632] [2023-12-09 15:33:48,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:33:48,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:33:48,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:33:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:49,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:33:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390749632] [2023-12-09 15:33:49,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390749632] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:33:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941218088] [2023-12-09 15:33:49,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:33:49,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:49,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:33:49,699 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) [2023-12-09 15:33:49,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:33:49,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-09 15:33:49,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:33:49,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-09 15:33:49,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:33:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-09 15:33:50,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:33:50,624 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:50,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 60 [2023-12-09 15:33:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-12-09 15:33:50,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941218088] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:33:50,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:33:50,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 12, 9] total 39 [2023-12-09 15:33:50,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301334556] [2023-12-09 15:33:50,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:33:50,933 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-09 15:33:50,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:33:50,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-09 15:33:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1307, Unknown=0, NotChecked=0, Total=1482 [2023-12-09 15:33:50,935 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 137 [2023-12-09 15:33:50,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 1576 transitions, 41829 flow. Second operand has 39 states, 39 states have (on average 62.84615384615385) internal successors, (2451), 39 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:33:50,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:33:50,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 137 [2023-12-09 15:33:50,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:34:00,425 INFO L124 PetriNetUnfolderBase]: 7307/25442 cut-off events. [2023-12-09 15:34:00,425 INFO L125 PetriNetUnfolderBase]: For 630441/638017 co-relation queries the response was YES. [2023-12-09 15:34:00,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170500 conditions, 25442 events. 7307/25442 cut-off events. For 630441/638017 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 309675 event pairs, 528 based on Foata normal form. 187/23484 useless extension candidates. Maximal degree in co-relation 71074. Up to 8658 conditions per place. [2023-12-09 15:34:00,581 INFO L140 encePairwiseOnDemand]: 105/137 looper letters, 485 selfloop transitions, 115 changer transitions 1452/2103 dead transitions. [2023-12-09 15:34:00,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 2103 transitions, 59543 flow [2023-12-09 15:34:00,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-09 15:34:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-12-09 15:34:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 4266 transitions. [2023-12-09 15:34:00,585 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4512853062519835 [2023-12-09 15:34:00,585 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 4266 transitions. [2023-12-09 15:34:00,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 4266 transitions. [2023-12-09 15:34:00,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:34:00,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 4266 transitions. [2023-12-09 15:34:00,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 61.82608695652174) internal successors, (4266), 69 states have internal predecessors, (4266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:00,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 137.0) internal successors, (9590), 70 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:00,594 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 137.0) internal successors, (9590), 70 states have internal predecessors, (9590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:00,594 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 541 predicate places. [2023-12-09 15:34:00,594 INFO L500 AbstractCegarLoop]: Abstraction has has 663 places, 2103 transitions, 59543 flow [2023-12-09 15:34:00,595 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 62.84615384615385) internal successors, (2451), 39 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:00,595 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:34:00,595 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:34:00,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-09 15:34:00,799 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,SelfDestructingSolverStorable16 [2023-12-09 15:34:00,800 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:34:00,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:34:00,801 INFO L85 PathProgramCache]: Analyzing trace with hash -2010792580, now seen corresponding path program 10 times [2023-12-09 15:34:00,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:34:00,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685706647] [2023-12-09 15:34:00,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:34:00,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:34:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:34:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:34:02,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:34:02,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685706647] [2023-12-09 15:34:02,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685706647] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:34:02,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193003052] [2023-12-09 15:34:02,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:34:02,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:34:02,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:34:02,295 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) [2023-12-09 15:34:02,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:34:02,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:34:02,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:34:02,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-09 15:34:02,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:34:03,374 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:34:03,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:34:04,053 INFO L349 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-12-09 15:34:04,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 84 [2023-12-09 15:34:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:34:05,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193003052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:34:05,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:34:05,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 61 [2023-12-09 15:34:05,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135547269] [2023-12-09 15:34:05,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:34:05,207 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-09 15:34:05,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:34:05,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-09 15:34:05,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=624, Invalid=3036, Unknown=0, NotChecked=0, Total=3660 [2023-12-09 15:34:05,210 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 137 [2023-12-09 15:34:05,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 2103 transitions, 59543 flow. Second operand has 61 states, 61 states have (on average 66.29508196721312) internal successors, (4044), 61 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:05,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:34:05,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 137 [2023-12-09 15:34:05,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:34:22,242 INFO L124 PetriNetUnfolderBase]: 10041/33947 cut-off events. [2023-12-09 15:34:22,242 INFO L125 PetriNetUnfolderBase]: For 997229/1007620 co-relation queries the response was YES. [2023-12-09 15:34:22,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246942 conditions, 33947 events. 10041/33947 cut-off events. For 997229/1007620 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 425662 event pairs, 779 based on Foata normal form. 909/32053 useless extension candidates. Maximal degree in co-relation 114331. Up to 12106 conditions per place. [2023-12-09 15:34:22,491 INFO L140 encePairwiseOnDemand]: 106/137 looper letters, 438 selfloop transitions, 281 changer transitions 2107/2945 dead transitions. [2023-12-09 15:34:22,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 2945 transitions, 87917 flow [2023-12-09 15:34:22,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-12-09 15:34:22,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2023-12-09 15:34:22,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 9891 transitions. [2023-12-09 15:34:22,498 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4878181100808838 [2023-12-09 15:34:22,498 INFO L72 ComplementDD]: Start complementDD. Operand 148 states and 9891 transitions. [2023-12-09 15:34:22,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 9891 transitions. [2023-12-09 15:34:22,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:34:22,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 148 states and 9891 transitions. [2023-12-09 15:34:22,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 149 states, 148 states have (on average 66.83108108108108) internal successors, (9891), 148 states have internal predecessors, (9891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:22,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 149 states, 149 states have (on average 137.0) internal successors, (20413), 149 states have internal predecessors, (20413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:22,523 INFO L81 ComplementDD]: Finished complementDD. Result has 149 states, 149 states have (on average 137.0) internal successors, (20413), 149 states have internal predecessors, (20413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:22,524 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 688 predicate places. [2023-12-09 15:34:22,524 INFO L500 AbstractCegarLoop]: Abstraction has has 810 places, 2945 transitions, 87917 flow [2023-12-09 15:34:22,525 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 66.29508196721312) internal successors, (4044), 61 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:22,525 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:34:22,525 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:34:22,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-09 15:34:22,729 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,SelfDestructingSolverStorable17 [2023-12-09 15:34:22,730 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:34:22,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:34:22,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1869511576, now seen corresponding path program 11 times [2023-12-09 15:34:22,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:34:22,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849019205] [2023-12-09 15:34:22,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:34:22,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:34:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:34:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:34:24,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:34:24,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849019205] [2023-12-09 15:34:24,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849019205] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:34:24,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782928553] [2023-12-09 15:34:24,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:34:24,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:34:24,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:34:24,049 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) [2023-12-09 15:34:24,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 15:34:24,164 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-09 15:34:24,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:34:24,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 47 conjunts are in the unsatisfiable core [2023-12-09 15:34:24,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:34:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:34:25,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:34:26,139 INFO L349 Elim1Store]: treesize reduction 30, result has 64.7 percent of original size [2023-12-09 15:34:26,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 108 treesize of output 84 [2023-12-09 15:34:27,306 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:34:27,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782928553] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:34:27,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:34:27,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 62 [2023-12-09 15:34:27,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825885250] [2023-12-09 15:34:27,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:34:27,307 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-09 15:34:27,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:34:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-09 15:34:27,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=3180, Unknown=0, NotChecked=0, Total=3782 [2023-12-09 15:34:27,311 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 137 [2023-12-09 15:34:27,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 2945 transitions, 87917 flow. Second operand has 62 states, 62 states have (on average 66.25806451612904) internal successors, (4108), 62 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:27,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:34:27,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 137 [2023-12-09 15:34:27,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:34:48,072 INFO L124 PetriNetUnfolderBase]: 10496/36234 cut-off events. [2023-12-09 15:34:48,073 INFO L125 PetriNetUnfolderBase]: For 1218470/1228740 co-relation queries the response was YES. [2023-12-09 15:34:48,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273877 conditions, 36234 events. 10496/36234 cut-off events. For 1218470/1228740 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 462388 event pairs, 844 based on Foata normal form. 1217/34441 useless extension candidates. Maximal degree in co-relation 101734. Up to 12814 conditions per place. [2023-12-09 15:34:48,333 INFO L140 encePairwiseOnDemand]: 106/137 looper letters, 306 selfloop transitions, 220 changer transitions 2431/3076 dead transitions. [2023-12-09 15:34:48,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 930 places, 3076 transitions, 97855 flow [2023-12-09 15:34:48,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2023-12-09 15:34:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2023-12-09 15:34:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 8466 transitions. [2023-12-09 15:34:48,339 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4865796884878441 [2023-12-09 15:34:48,339 INFO L72 ComplementDD]: Start complementDD. Operand 127 states and 8466 transitions. [2023-12-09 15:34:48,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 8466 transitions. [2023-12-09 15:34:48,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:34:48,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 127 states and 8466 transitions. [2023-12-09 15:34:48,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 128 states, 127 states have (on average 66.66141732283465) internal successors, (8466), 127 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:48,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 128 states, 128 states have (on average 137.0) internal successors, (17536), 128 states have internal predecessors, (17536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:48,360 INFO L81 ComplementDD]: Finished complementDD. Result has 128 states, 128 states have (on average 137.0) internal successors, (17536), 128 states have internal predecessors, (17536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:48,361 INFO L308 CegarLoopForPetriNet]: 122 programPoint places, 808 predicate places. [2023-12-09 15:34:48,361 INFO L500 AbstractCegarLoop]: Abstraction has has 930 places, 3076 transitions, 97855 flow [2023-12-09 15:34:48,361 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 66.25806451612904) internal successors, (4108), 62 states have internal predecessors, (4108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:34:48,361 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:34:48,361 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:34:48,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-09 15:34:48,567 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:34:48,567 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:34:48,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:34:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash 353437908, now seen corresponding path program 12 times [2023-12-09 15:34:48,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:34:48,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379348800] [2023-12-09 15:34:48,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:34:48,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:34:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:34:50,025 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:34:50,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:34:50,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379348800] [2023-12-09 15:34:50,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379348800] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:34:50,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911868215] [2023-12-09 15:34:50,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:34:50,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:34:50,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:34:50,027 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:34:50,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-09 15:34:50,261 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-12-09 15:34:50,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:34:50,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 57 conjunts are in the unsatisfiable core [2023-12-09 15:34:50,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:34:50,949 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 23 treesize of output 1 [2023-12-09 15:34:51,254 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 [2023-12-09 15:34:51,311 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 [2023-12-09 15:34:51,996 INFO L349 Elim1Store]: treesize reduction 68, result has 9.3 percent of original size [2023-12-09 15:34:51,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 24 [2023-12-09 15:34:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 1 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:34:52,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:34:57,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:34:57,600 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 180 treesize of output 120 [2023-12-09 15:34:57,667 INFO L349 Elim1Store]: treesize reduction 49, result has 58.1 percent of original size [2023-12-09 15:34:57,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 368 treesize of output 385 [2023-12-09 15:34:57,748 INFO L349 Elim1Store]: treesize reduction 54, result has 53.8 percent of original size [2023-12-09 15:34:57,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 318 treesize of output 304 [2023-12-09 15:34:57,824 INFO L349 Elim1Store]: treesize reduction 54, result has 53.8 percent of original size [2023-12-09 15:34:57,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 237 [2023-12-09 15:35:00,836 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:35:00,837 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 181 treesize of output 121 [2023-12-09 15:35:00,889 INFO L349 Elim1Store]: treesize reduction 104, result has 11.1 percent of original size [2023-12-09 15:35:00,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 784 treesize of output 696 [2023-12-09 15:35:00,912 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:35:00,912 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:35:00,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:35:00,914 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:35:00,914 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:35:00,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:35:00,915 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-09 15:35:00,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:35:00,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 252 treesize of output 214 [2023-12-09 15:35:00,957 INFO L349 Elim1Store]: treesize reduction 104, result has 11.1 percent of original size [2023-12-09 15:35:00,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 251 treesize of output 187 [2023-12-09 15:35:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:35:02,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911868215] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:35:02,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:35:02,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 31, 28] total 76 [2023-12-09 15:35:02,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699392706] [2023-12-09 15:35:02,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:35:02,577 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-12-09 15:35:02,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:35:02,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-12-09 15:35:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1199, Invalid=4455, Unknown=46, NotChecked=0, Total=5700 [2023-12-09 15:35:02,580 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 137 [2023-12-09 15:35:02,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 930 places, 3076 transitions, 97855 flow. Second operand has 76 states, 76 states have (on average 58.776315789473685) internal successors, (4467), 76 states have internal predecessors, (4467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:35:02,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:35:02,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 137 [2023-12-09 15:35:02,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:35:11,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:35:43,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:36:40,157 INFO L124 PetriNetUnfolderBase]: 19767/64140 cut-off events. [2023-12-09 15:36:40,158 INFO L125 PetriNetUnfolderBase]: For 2486136/2501197 co-relation queries the response was YES. Received shutdown request... [2023-12-09 15:36:40,403 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 [2023-12-09 15:36:40,403 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:36:40,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536115 conditions, 64140 events. 19767/64140 cut-off events. For 2486136/2501197 co-relation queries the response was YES. Maximal size of possible extension queue 1418. Compared 850755 event pairs, 2033 based on Foata normal form. 1329/60252 useless extension candidates. Maximal degree in co-relation 210665. Up to 25927 conditions per place. [2023-12-09 15:36:40,677 INFO L140 encePairwiseOnDemand]: 103/137 looper letters, 800 selfloop transitions, 434 changer transitions 4499/5849 dead transitions. [2023-12-09 15:36:40,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1175 places, 5849 transitions, 196276 flow [2023-12-09 15:36:40,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2023-12-09 15:36:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2023-12-09 15:36:40,680 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:36:40,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-09 15:36:40,881 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2023-12-09 15:36:40,882 WARN L624 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type AutomatonWithImplicitSelfloops). [2023-12-09 15:36:40,884 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:36:40,884 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:36:40,884 INFO L457 BasicCegarLoop]: Path program histogram: [12, 3, 1, 1, 1, 1, 1] [2023-12-09 15:36:40,886 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:36:40,886 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:36:40,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:36:40 BasicIcfg [2023-12-09 15:36:40,888 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:36:40,889 INFO L158 Benchmark]: Toolchain (without parser) took 244219.56ms. Allocated memory was 257.9MB in the beginning and 3.1GB in the end (delta: 2.8GB). Free memory was 207.7MB in the beginning and 1.2GB in the end (delta: -1.0GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-09 15:36:40,889 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory was 139.3MB in the beginning and 139.2MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:36:40,889 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.35ms. Allocated memory is still 257.9MB. Free memory was 207.7MB in the beginning and 196.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:36:40,889 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.93ms. Allocated memory is still 257.9MB. Free memory was 196.2MB in the beginning and 194.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:36:40,889 INFO L158 Benchmark]: Boogie Preprocessor took 34.36ms. Allocated memory is still 257.9MB. Free memory was 194.1MB in the beginning and 192.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:36:40,889 INFO L158 Benchmark]: RCFGBuilder took 499.06ms. Allocated memory is still 257.9MB. Free memory was 192.5MB in the beginning and 169.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-09 15:36:40,890 INFO L158 Benchmark]: TraceAbstraction took 243449.16ms. Allocated memory was 257.9MB in the beginning and 3.1GB in the end (delta: 2.8GB). Free memory was 169.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-09 15:36:40,890 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory was 139.3MB in the beginning and 139.2MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.35ms. Allocated memory is still 257.9MB. Free memory was 207.7MB in the beginning and 196.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.93ms. Allocated memory is still 257.9MB. Free memory was 196.2MB in the beginning and 194.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.36ms. Allocated memory is still 257.9MB. Free memory was 194.1MB in the beginning and 192.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 499.06ms. Allocated memory is still 257.9MB. Free memory was 192.5MB in the beginning and 169.4MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 243449.16ms. Allocated memory was 257.9MB in the beginning and 3.1GB in the end (delta: 2.8GB). Free memory was 169.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type AutomatonWithImplicitSelfloops). - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type AutomatonWithImplicitSelfloops). - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type AutomatonWithImplicitSelfloops). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 158 locations, 3 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: 243.4s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 181.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 133 mSolverCounterUnknown, 13239 SdHoareTripleChecker+Valid, 24.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13239 mSDsluCounter, 10112 SdHoareTripleChecker+Invalid, 22.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 323 IncrementalHoareTripleChecker+Unchecked, 9547 mSDsCounter, 1111 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24524 IncrementalHoareTripleChecker+Invalid, 26091 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1111 mSolverCounterUnsat, 565 mSDtfsCounter, 24524 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4920 GetRequests, 3378 SyntacticMatches, 2 SemanticMatches, 1540 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 91822 ImplicationChecksByTransitivity, 96.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97855occurred in iteration=19, InterpolantAutomatonStates: 840, 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, 1.2s SatisfiabilityAnalysisTime, 56.3s InterpolantComputationTime, 4435 NumberOfCodeBlocks, 4373 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 6236 ConstructedInterpolants, 221 QuantifiedInterpolants, 107107 SizeOfPredicates, 251 NumberOfNonLiveVariables, 3792 ConjunctsInSsa, 442 ConjunctsInUnsatCore, 46 InterpolantComputations, 7 PerfectInterpolantSequences, 361/1790 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