/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-counter-fun.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:23:16,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:23:16,273 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 15:23:16,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:23:16,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:23:16,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:23:16,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:23:16,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:23:16,292 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:23:16,292 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:23:16,292 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:23:16,292 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:23:16,293 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:23:16,293 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:23:16,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:23:16,293 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:23:16,293 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:23:16,294 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:23:16,294 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:23:16,294 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:23:16,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:23:16,295 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:23:16,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:23:16,295 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:23:16,295 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:23:16,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:23:16,295 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:23:16,296 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:23:16,296 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:23:16,296 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:23:16,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:23:16,296 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:23:16,297 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:23:16,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:23:16,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:23:16,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:23:16,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:23:16,445 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:23:16,445 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:23:16,446 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2023-12-09 15:23:17,445 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:23:17,604 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:23:17,605 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-fun.wvr.c [2023-12-09 15:23:17,611 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6cf60573/ba26c663441c4383a64d0fba97998c53/FLAG524ab209f [2023-12-09 15:23:17,623 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6cf60573/ba26c663441c4383a64d0fba97998c53 [2023-12-09 15:23:17,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:23:17,626 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:23:17,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:23:17,627 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:23:17,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:23:17,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69f561bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17, skipping insertion in model container [2023-12-09 15:23:17,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,654 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:23:17,782 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-counter-fun.wvr.c[2707,2720] [2023-12-09 15:23:17,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:23:17,793 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:23:17,817 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-counter-fun.wvr.c[2707,2720] [2023-12-09 15:23:17,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:23:17,824 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:23:17,824 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:23:17,829 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:23:17,829 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17 WrapperNode [2023-12-09 15:23:17,829 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:23:17,830 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:23:17,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:23:17,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:23:17,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,863 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 13, calls inlined = 15, statements flattened = 203 [2023-12-09 15:23:17,863 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:23:17,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:23:17,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:23:17,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:23:17,870 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:23:17,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:23:17,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:23:17,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:23:17,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (1/1) ... [2023-12-09 15:23:17,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:23:17,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:17,911 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 15:23:17,919 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 15:23:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:23:17,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:23:17,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:23:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:23:17,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:23:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:23:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:23:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:23:17,935 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:23:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:23:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:23:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:23:17,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:23:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:23:17,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:23:17,937 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 15:23:18,008 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:23:18,010 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:23:18,309 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:23:18,472 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:23:18,472 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-09 15:23:18,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:23:18 BoogieIcfgContainer [2023-12-09 15:23:18,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:23:18,477 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:23:18,477 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:23:18,479 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:23:18,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:23:17" (1/3) ... [2023-12-09 15:23:18,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636c1c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:23:18, skipping insertion in model container [2023-12-09 15:23:18,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:17" (2/3) ... [2023-12-09 15:23:18,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636c1c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:23:18, skipping insertion in model container [2023-12-09 15:23:18,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:23:18" (3/3) ... [2023-12-09 15:23:18,482 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-fun.wvr.c [2023-12-09 15:23:18,493 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:23:18,493 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:23:18,493 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:23:18,545 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:23:18,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 172 transitions, 358 flow [2023-12-09 15:23:18,612 INFO L124 PetriNetUnfolderBase]: 13/170 cut-off events. [2023-12-09 15:23:18,612 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:23:18,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 170 events. 13/170 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 96 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-12-09 15:23:18,617 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 172 transitions, 358 flow [2023-12-09 15:23:18,620 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 161 transitions, 334 flow [2023-12-09 15:23:18,626 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:23:18,631 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;@495fb695, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:23:18,631 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:23:18,669 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:23:18,669 INFO L124 PetriNetUnfolderBase]: 13/160 cut-off events. [2023-12-09 15:23:18,669 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:23:18,669 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:18,670 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, 1, 1, 1, 1, 1, 1, 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 15:23:18,670 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 15:23:18,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:18,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1717699230, now seen corresponding path program 1 times [2023-12-09 15:23:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:18,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484722890] [2023-12-09 15:23:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:18,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:19,251 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 15:23:19,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:19,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484722890] [2023-12-09 15:23:19,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484722890] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:19,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:19,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:19,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968114993] [2023-12-09 15:23:19,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:19,262 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:19,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:19,289 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 172 [2023-12-09 15:23:19,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 161 transitions, 334 flow. Second operand has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 15:23:19,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:19,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 172 [2023-12-09 15:23:19,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:19,481 INFO L124 PetriNetUnfolderBase]: 14/210 cut-off events. [2023-12-09 15:23:19,482 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-12-09 15:23:19,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 210 events. 14/210 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 311 event pairs, 0 based on Foata normal form. 21/216 useless extension candidates. Maximal degree in co-relation 164. Up to 29 conditions per place. [2023-12-09 15:23:19,484 INFO L140 encePairwiseOnDemand]: 152/172 looper letters, 38 selfloop transitions, 3 changer transitions 10/161 dead transitions. [2023-12-09 15:23:19,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 161 transitions, 445 flow [2023-12-09 15:23:19,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:23:19,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:23:19,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 904 transitions. [2023-12-09 15:23:19,496 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7508305647840532 [2023-12-09 15:23:19,497 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 904 transitions. [2023-12-09 15:23:19,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 904 transitions. [2023-12-09 15:23:19,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:19,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 904 transitions. [2023-12-09 15:23:19,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 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 15:23:19,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 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 15:23:19,510 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 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 15:23:19,513 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 6 predicate places. [2023-12-09 15:23:19,513 INFO L500 AbstractCegarLoop]: Abstraction has has 161 places, 161 transitions, 445 flow [2023-12-09 15:23:19,514 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.0) internal successors, (635), 5 states have internal predecessors, (635), 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 15:23:19,514 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:19,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:19,514 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:23:19,514 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 15:23:19,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1518409854, now seen corresponding path program 1 times [2023-12-09 15:23:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998577913] [2023-12-09 15:23:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:19,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:19,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:19,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998577913] [2023-12-09 15:23:19,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998577913] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:19,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789422387] [2023-12-09 15:23:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:19,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:19,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:19,674 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 15:23:19,709 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 15:23:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:19,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-09 15:23:19,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:20,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:23:20,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789422387] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:20,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:23:20,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-09 15:23:20,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611252167] [2023-12-09 15:23:20,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:20,152 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:23:20,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:20,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:23:20,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:23:20,155 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 172 [2023-12-09 15:23:20,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 161 transitions, 445 flow. Second operand has 7 states, 7 states have (on average 126.42857142857143) internal successors, (885), 7 states have internal predecessors, (885), 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 15:23:20,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:20,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 172 [2023-12-09 15:23:20,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:20,329 INFO L124 PetriNetUnfolderBase]: 15/295 cut-off events. [2023-12-09 15:23:20,329 INFO L125 PetriNetUnfolderBase]: For 75/77 co-relation queries the response was YES. [2023-12-09 15:23:20,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 295 events. 15/295 cut-off events. For 75/77 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 626 event pairs, 0 based on Foata normal form. 4/280 useless extension candidates. Maximal degree in co-relation 310. Up to 45 conditions per place. [2023-12-09 15:23:20,333 INFO L140 encePairwiseOnDemand]: 159/172 looper letters, 39 selfloop transitions, 9 changer transitions 34/189 dead transitions. [2023-12-09 15:23:20,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 189 transitions, 675 flow [2023-12-09 15:23:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:23:20,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:23:20,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1290 transitions. [2023-12-09 15:23:20,336 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-12-09 15:23:20,336 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1290 transitions. [2023-12-09 15:23:20,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1290 transitions. [2023-12-09 15:23:20,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:20,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1290 transitions. [2023-12-09 15:23:20,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 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 15:23:20,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 172.0) internal successors, (1892), 11 states have internal predecessors, (1892), 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 15:23:20,341 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 172.0) internal successors, (1892), 11 states have internal predecessors, (1892), 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 15:23:20,342 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 15 predicate places. [2023-12-09 15:23:20,342 INFO L500 AbstractCegarLoop]: Abstraction has has 170 places, 189 transitions, 675 flow [2023-12-09 15:23:20,343 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.42857142857143) internal successors, (885), 7 states have internal predecessors, (885), 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 15:23:20,343 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:20,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:20,349 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 15:23:20,548 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:20,548 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 15:23:20,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:20,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1978285602, now seen corresponding path program 1 times [2023-12-09 15:23:20,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:20,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546877950] [2023-12-09 15:23:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:20,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:20,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:20,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546877950] [2023-12-09 15:23:20,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546877950] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:20,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:20,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:20,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506284607] [2023-12-09 15:23:20,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:20,642 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:20,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:20,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:20,643 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:20,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 189 transitions, 675 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:20,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:20,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:20,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:20,766 INFO L124 PetriNetUnfolderBase]: 184/651 cut-off events. [2023-12-09 15:23:20,766 INFO L125 PetriNetUnfolderBase]: For 405/423 co-relation queries the response was YES. [2023-12-09 15:23:20,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 651 events. 184/651 cut-off events. For 405/423 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2756 event pairs, 61 based on Foata normal form. 2/582 useless extension candidates. Maximal degree in co-relation 749. Up to 203 conditions per place. [2023-12-09 15:23:20,770 INFO L140 encePairwiseOnDemand]: 165/172 looper letters, 51 selfloop transitions, 7 changer transitions 36/225 dead transitions. [2023-12-09 15:23:20,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 225 transitions, 948 flow [2023-12-09 15:23:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 15:23:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 15:23:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 760 transitions. [2023-12-09 15:23:20,771 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8837209302325582 [2023-12-09 15:23:20,771 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 760 transitions. [2023-12-09 15:23:20,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 760 transitions. [2023-12-09 15:23:20,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:20,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 760 transitions. [2023-12-09 15:23:20,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 152.0) internal successors, (760), 5 states have internal predecessors, (760), 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 15:23:20,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 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 15:23:20,775 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 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 15:23:20,775 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 19 predicate places. [2023-12-09 15:23:20,775 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 225 transitions, 948 flow [2023-12-09 15:23:20,776 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:20,776 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:20,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:20,776 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:23:20,776 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 15:23:20,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:20,777 INFO L85 PathProgramCache]: Analyzing trace with hash 873526298, now seen corresponding path program 2 times [2023-12-09 15:23:20,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:20,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055104428] [2023-12-09 15:23:20,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:20,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:20,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:20,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055104428] [2023-12-09 15:23:20,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055104428] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900723125] [2023-12-09 15:23:20,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:23:20,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:20,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:20,920 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 15:23:20,959 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 15:23:21,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:23:21,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:21,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:23:21,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:21,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:21,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:21,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900723125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:21,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:21,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-12-09 15:23:21,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982684043] [2023-12-09 15:23:21,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:21,105 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:23:21,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:21,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:23:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-09 15:23:21,107 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:21,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 225 transitions, 948 flow. Second operand has 9 states, 9 states have (on average 144.77777777777777) internal successors, (1303), 9 states have internal predecessors, (1303), 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 15:23:21,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:21,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:21,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:21,317 INFO L124 PetriNetUnfolderBase]: 227/779 cut-off events. [2023-12-09 15:23:21,317 INFO L125 PetriNetUnfolderBase]: For 700/792 co-relation queries the response was YES. [2023-12-09 15:23:21,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2123 conditions, 779 events. 227/779 cut-off events. For 700/792 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3528 event pairs, 11 based on Foata normal form. 19/713 useless extension candidates. Maximal degree in co-relation 1267. Up to 292 conditions per place. [2023-12-09 15:23:21,321 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 76 selfloop transitions, 31 changer transitions 37/275 dead transitions. [2023-12-09 15:23:21,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 275 transitions, 1466 flow [2023-12-09 15:23:21,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-09 15:23:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-12-09 15:23:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2087 transitions. [2023-12-09 15:23:21,325 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8666943521594684 [2023-12-09 15:23:21,325 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2087 transitions. [2023-12-09 15:23:21,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2087 transitions. [2023-12-09 15:23:21,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:21,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2087 transitions. [2023-12-09 15:23:21,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 149.07142857142858) internal successors, (2087), 14 states have internal predecessors, (2087), 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 15:23:21,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 172.0) internal successors, (2580), 15 states have internal predecessors, (2580), 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 15:23:21,331 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 172.0) internal successors, (2580), 15 states have internal predecessors, (2580), 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 15:23:21,332 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 32 predicate places. [2023-12-09 15:23:21,332 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 275 transitions, 1466 flow [2023-12-09 15:23:21,332 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 144.77777777777777) internal successors, (1303), 9 states have internal predecessors, (1303), 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 15:23:21,333 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:21,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:21,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-09 15:23:21,538 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,SelfDestructingSolverStorable3 [2023-12-09 15:23:21,538 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 15:23:21,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:21,539 INFO L85 PathProgramCache]: Analyzing trace with hash -2028089830, now seen corresponding path program 3 times [2023-12-09 15:23:21,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:21,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949501915] [2023-12-09 15:23:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:21,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:21,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:21,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949501915] [2023-12-09 15:23:21,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949501915] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:21,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:21,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:21,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839852928] [2023-12-09 15:23:21,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:21,636 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:21,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:21,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:21,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:21,638 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:21,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 275 transitions, 1466 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:21,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:21,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:21,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:21,839 INFO L124 PetriNetUnfolderBase]: 279/924 cut-off events. [2023-12-09 15:23:21,841 INFO L125 PetriNetUnfolderBase]: For 1058/1156 co-relation queries the response was YES. [2023-12-09 15:23:21,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3145 conditions, 924 events. 279/924 cut-off events. For 1058/1156 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4552 event pairs, 2 based on Foata normal form. 0/831 useless extension candidates. Maximal degree in co-relation 2045. Up to 375 conditions per place. [2023-12-09 15:23:21,849 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 163 selfloop transitions, 23 changer transitions 55/372 dead transitions. [2023-12-09 15:23:21,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 372 transitions, 2600 flow [2023-12-09 15:23:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:23:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:23:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1052 transitions. [2023-12-09 15:23:21,852 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8737541528239202 [2023-12-09 15:23:21,852 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1052 transitions. [2023-12-09 15:23:21,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1052 transitions. [2023-12-09 15:23:21,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:21,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1052 transitions. [2023-12-09 15:23:21,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 150.28571428571428) internal successors, (1052), 7 states have internal predecessors, (1052), 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 15:23:21,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 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 15:23:21,856 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 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 15:23:21,858 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 38 predicate places. [2023-12-09 15:23:21,858 INFO L500 AbstractCegarLoop]: Abstraction has has 193 places, 372 transitions, 2600 flow [2023-12-09 15:23:21,858 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:21,858 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:21,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:21,859 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:23:21,859 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 15:23:21,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:21,859 INFO L85 PathProgramCache]: Analyzing trace with hash -480993024, now seen corresponding path program 1 times [2023-12-09 15:23:21,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:21,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276642871] [2023-12-09 15:23:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:21,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:21,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:21,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:21,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276642871] [2023-12-09 15:23:21,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276642871] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:21,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:21,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:21,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207444028] [2023-12-09 15:23:21,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:21,944 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:21,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:21,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:21,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:21,945 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:21,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 372 transitions, 2600 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:21,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:21,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:21,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:22,115 INFO L124 PetriNetUnfolderBase]: 287/988 cut-off events. [2023-12-09 15:23:22,115 INFO L125 PetriNetUnfolderBase]: For 1698/2020 co-relation queries the response was YES. [2023-12-09 15:23:22,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 988 events. 287/988 cut-off events. For 1698/2020 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5122 event pairs, 0 based on Foata normal form. 32/933 useless extension candidates. Maximal degree in co-relation 2536. Up to 391 conditions per place. [2023-12-09 15:23:22,122 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 184 selfloop transitions, 21 changer transitions 77/413 dead transitions. [2023-12-09 15:23:22,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 413 transitions, 3506 flow [2023-12-09 15:23:22,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:23:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:23:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1054 transitions. [2023-12-09 15:23:22,124 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8754152823920266 [2023-12-09 15:23:22,124 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1054 transitions. [2023-12-09 15:23:22,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1054 transitions. [2023-12-09 15:23:22,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:22,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1054 transitions. [2023-12-09 15:23:22,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 150.57142857142858) internal successors, (1054), 7 states have internal predecessors, (1054), 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 15:23:22,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 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 15:23:22,128 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 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 15:23:22,129 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 44 predicate places. [2023-12-09 15:23:22,129 INFO L500 AbstractCegarLoop]: Abstraction has has 199 places, 413 transitions, 3506 flow [2023-12-09 15:23:22,129 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:22,129 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:22,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:22,130 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:23:22,130 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 15:23:22,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:22,130 INFO L85 PathProgramCache]: Analyzing trace with hash -20290874, now seen corresponding path program 2 times [2023-12-09 15:23:22,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:22,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424514722] [2023-12-09 15:23:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:22,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:22,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:22,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:22,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:22,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424514722] [2023-12-09 15:23:22,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424514722] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:22,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976594852] [2023-12-09 15:23:22,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:23:22,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:22,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:22,211 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 15:23:22,232 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 15:23:22,327 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:23:22,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:22,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:23:22,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:22,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:22,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976594852] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:22,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:22,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-12-09 15:23:22,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117275789] [2023-12-09 15:23:22,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:22,381 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:23:22,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:22,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:23:22,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-09 15:23:22,383 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:22,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 413 transitions, 3506 flow. Second operand has 9 states, 9 states have (on average 144.66666666666666) internal successors, (1302), 9 states have internal predecessors, (1302), 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 15:23:22,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:22,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:22,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:22,679 INFO L124 PetriNetUnfolderBase]: 322/1052 cut-off events. [2023-12-09 15:23:22,679 INFO L125 PetriNetUnfolderBase]: For 2073/2384 co-relation queries the response was YES. [2023-12-09 15:23:22,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4938 conditions, 1052 events. 322/1052 cut-off events. For 2073/2384 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5528 event pairs, 0 based on Foata normal form. 21/982 useless extension candidates. Maximal degree in co-relation 3767. Up to 400 conditions per place. [2023-12-09 15:23:22,685 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 192 selfloop transitions, 103 changer transitions 79/505 dead transitions. [2023-12-09 15:23:22,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 505 transitions, 5223 flow [2023-12-09 15:23:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-09 15:23:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-12-09 15:23:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2085 transitions. [2023-12-09 15:23:22,689 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8658637873754153 [2023-12-09 15:23:22,689 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2085 transitions. [2023-12-09 15:23:22,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2085 transitions. [2023-12-09 15:23:22,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:22,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2085 transitions. [2023-12-09 15:23:22,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 148.92857142857142) internal successors, (2085), 14 states have internal predecessors, (2085), 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 15:23:22,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 172.0) internal successors, (2580), 15 states have internal predecessors, (2580), 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 15:23:22,695 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 172.0) internal successors, (2580), 15 states have internal predecessors, (2580), 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 15:23:22,696 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 57 predicate places. [2023-12-09 15:23:22,696 INFO L500 AbstractCegarLoop]: Abstraction has has 212 places, 505 transitions, 5223 flow [2023-12-09 15:23:22,696 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 144.66666666666666) internal successors, (1302), 9 states have internal predecessors, (1302), 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 15:23:22,696 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:22,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:22,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:23:22,903 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:22,904 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 15:23:22,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:22,904 INFO L85 PathProgramCache]: Analyzing trace with hash 739628024, now seen corresponding path program 4 times [2023-12-09 15:23:22,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:22,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339378808] [2023-12-09 15:23:22,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:22,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:22,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:22,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339378808] [2023-12-09 15:23:22,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339378808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:22,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:22,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:23:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362696848] [2023-12-09 15:23:22,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:22,985 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:23:22,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:22,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:23:22,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:23:22,986 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:22,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 505 transitions, 5223 flow. Second operand has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 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 15:23:22,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:22,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:22,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:23,188 INFO L124 PetriNetUnfolderBase]: 416/1313 cut-off events. [2023-12-09 15:23:23,188 INFO L125 PetriNetUnfolderBase]: For 3441/3911 co-relation queries the response was YES. [2023-12-09 15:23:23,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7125 conditions, 1313 events. 416/1313 cut-off events. For 3441/3911 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7644 event pairs, 3 based on Foata normal form. 34/1240 useless extension candidates. Maximal degree in co-relation 5145. Up to 535 conditions per place. [2023-12-09 15:23:23,198 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 331 selfloop transitions, 53 changer transitions 84/599 dead transitions. [2023-12-09 15:23:23,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 599 transitions, 7354 flow [2023-12-09 15:23:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:23:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:23:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 920 transitions. [2023-12-09 15:23:23,199 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8914728682170543 [2023-12-09 15:23:23,200 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 920 transitions. [2023-12-09 15:23:23,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 920 transitions. [2023-12-09 15:23:23,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:23,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 920 transitions. [2023-12-09 15:23:23,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 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 15:23:23,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:23,203 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:23,203 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 62 predicate places. [2023-12-09 15:23:23,203 INFO L500 AbstractCegarLoop]: Abstraction has has 217 places, 599 transitions, 7354 flow [2023-12-09 15:23:23,204 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 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 15:23:23,204 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:23,204 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:23,204 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:23:23,204 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 15:23:23,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash 604763618, now seen corresponding path program 3 times [2023-12-09 15:23:23,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:23,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661601224] [2023-12-09 15:23:23,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:23,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:23,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:23,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661601224] [2023-12-09 15:23:23,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661601224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:23,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:23,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:23,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221424032] [2023-12-09 15:23:23,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:23,269 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:23,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:23,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:23,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:23,271 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:23,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 599 transitions, 7354 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:23,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:23,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:23,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:23,523 INFO L124 PetriNetUnfolderBase]: 403/1271 cut-off events. [2023-12-09 15:23:23,523 INFO L125 PetriNetUnfolderBase]: For 4134/4605 co-relation queries the response was YES. [2023-12-09 15:23:23,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7770 conditions, 1271 events. 403/1271 cut-off events. For 4134/4605 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7324 event pairs, 1 based on Foata normal form. 14/1183 useless extension candidates. Maximal degree in co-relation 5593. Up to 524 conditions per place. [2023-12-09 15:23:23,533 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 323 selfloop transitions, 34 changer transitions 94/582 dead transitions. [2023-12-09 15:23:23,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 582 transitions, 7958 flow [2023-12-09 15:23:23,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:23:23,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:23:23,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2023-12-09 15:23:23,536 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8788759689922481 [2023-12-09 15:23:23,536 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 907 transitions. [2023-12-09 15:23:23,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 907 transitions. [2023-12-09 15:23:23,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:23,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 907 transitions. [2023-12-09 15:23:23,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 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 15:23:23,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:23,539 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:23,539 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 67 predicate places. [2023-12-09 15:23:23,539 INFO L500 AbstractCegarLoop]: Abstraction has has 222 places, 582 transitions, 7958 flow [2023-12-09 15:23:23,540 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:23,540 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:23,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:23,540 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 15:23:23,540 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 15:23:23,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:23,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1824116638, now seen corresponding path program 5 times [2023-12-09 15:23:23,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:23,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718020527] [2023-12-09 15:23:23,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:23,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:23,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:23,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:23,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718020527] [2023-12-09 15:23:23,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718020527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:23,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:23,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:23,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789045739] [2023-12-09 15:23:23,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:23,607 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:23,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:23,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:23,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:23,608 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:23,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 582 transitions, 7958 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:23,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:23,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:23,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:23,816 INFO L124 PetriNetUnfolderBase]: 403/1307 cut-off events. [2023-12-09 15:23:23,816 INFO L125 PetriNetUnfolderBase]: For 5249/5918 co-relation queries the response was YES. [2023-12-09 15:23:23,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8660 conditions, 1307 events. 403/1307 cut-off events. For 5249/5918 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7708 event pairs, 3 based on Foata normal form. 53/1258 useless extension candidates. Maximal degree in co-relation 6269. Up to 524 conditions per place. [2023-12-09 15:23:23,827 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 318 selfloop transitions, 37 changer transitions 97/583 dead transitions. [2023-12-09 15:23:23,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 583 transitions, 8820 flow [2023-12-09 15:23:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:23:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:23:23,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 910 transitions. [2023-12-09 15:23:23,829 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8817829457364341 [2023-12-09 15:23:23,829 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 910 transitions. [2023-12-09 15:23:23,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 910 transitions. [2023-12-09 15:23:23,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:23,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 910 transitions. [2023-12-09 15:23:23,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.66666666666666) internal successors, (910), 6 states have internal predecessors, (910), 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 15:23:23,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:23,832 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:23,832 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 72 predicate places. [2023-12-09 15:23:23,832 INFO L500 AbstractCegarLoop]: Abstraction has has 227 places, 583 transitions, 8820 flow [2023-12-09 15:23:23,832 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:23,833 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:23,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:23,833 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 15:23:23,833 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 15:23:23,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:23,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1930190872, now seen corresponding path program 4 times [2023-12-09 15:23:23,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:23,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178412745] [2023-12-09 15:23:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:23,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:23,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:23,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178412745] [2023-12-09 15:23:23,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178412745] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:23,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546050468] [2023-12-09 15:23:23,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:23:23,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:23,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:23,937 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 15:23:23,937 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 15:23:24,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:23:24,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:24,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-09 15:23:24,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:24,251 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:23:24,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546050468] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:24,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:23:24,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-12-09 15:23:24,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049814778] [2023-12-09 15:23:24,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:24,252 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:23:24,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:24,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:23:24,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:23:24,253 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 172 [2023-12-09 15:23:24,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 583 transitions, 8820 flow. Second operand has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 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 15:23:24,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:24,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 172 [2023-12-09 15:23:24,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:24,576 INFO L124 PetriNetUnfolderBase]: 475/1635 cut-off events. [2023-12-09 15:23:24,576 INFO L125 PetriNetUnfolderBase]: For 9519/10418 co-relation queries the response was YES. [2023-12-09 15:23:24,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11041 conditions, 1635 events. 475/1635 cut-off events. For 9519/10418 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10305 event pairs, 2 based on Foata normal form. 23/1526 useless extension candidates. Maximal degree in co-relation 6383. Up to 620 conditions per place. [2023-12-09 15:23:24,589 INFO L140 encePairwiseOnDemand]: 159/172 looper letters, 132 selfloop transitions, 9 changer transitions 145/635 dead transitions. [2023-12-09 15:23:24,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 635 transitions, 10222 flow [2023-12-09 15:23:24,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:23:24,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:23:24,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1275 transitions. [2023-12-09 15:23:24,592 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7412790697674418 [2023-12-09 15:23:24,592 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1275 transitions. [2023-12-09 15:23:24,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1275 transitions. [2023-12-09 15:23:24,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:24,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1275 transitions. [2023-12-09 15:23:24,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 127.5) internal successors, (1275), 10 states have internal predecessors, (1275), 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 15:23:24,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 172.0) internal successors, (1892), 11 states have internal predecessors, (1892), 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 15:23:24,596 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 172.0) internal successors, (1892), 11 states have internal predecessors, (1892), 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 15:23:24,596 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 81 predicate places. [2023-12-09 15:23:24,597 INFO L500 AbstractCegarLoop]: Abstraction has has 236 places, 635 transitions, 10222 flow [2023-12-09 15:23:24,597 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.0) internal successors, (889), 7 states have internal predecessors, (889), 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 15:23:24,597 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:24,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:24,618 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 15:23:24,803 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 15:23:24,803 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 15:23:24,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:24,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1293780934, now seen corresponding path program 1 times [2023-12-09 15:23:24,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:24,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534952973] [2023-12-09 15:23:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:24,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:23:24,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:24,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534952973] [2023-12-09 15:23:24,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534952973] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:24,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619031058] [2023-12-09 15:23:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:24,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:24,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:24,954 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 15:23:24,998 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 15:23:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:25,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:23:25,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:25,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:23:25,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:23:25,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619031058] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:25,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:25,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-12-09 15:23:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23007576] [2023-12-09 15:23:25,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:25,140 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:23:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:25,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:23:25,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:23:25,142 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:25,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 635 transitions, 10222 flow. Second operand has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 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 15:23:25,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:25,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:25,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:25,591 INFO L124 PetriNetUnfolderBase]: 496/1682 cut-off events. [2023-12-09 15:23:25,591 INFO L125 PetriNetUnfolderBase]: For 10300/11394 co-relation queries the response was YES. [2023-12-09 15:23:25,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12551 conditions, 1682 events. 496/1682 cut-off events. For 10300/11394 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10712 event pairs, 0 based on Foata normal form. 46/1595 useless extension candidates. Maximal degree in co-relation 8206. Up to 635 conditions per place. [2023-12-09 15:23:25,610 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 295 selfloop transitions, 89 changer transitions 145/664 dead transitions. [2023-12-09 15:23:25,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 664 transitions, 11752 flow [2023-12-09 15:23:25,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:23:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:23:25,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1354 transitions. [2023-12-09 15:23:25,614 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8746770025839793 [2023-12-09 15:23:25,614 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1354 transitions. [2023-12-09 15:23:25,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1354 transitions. [2023-12-09 15:23:25,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:25,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1354 transitions. [2023-12-09 15:23:25,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 150.44444444444446) internal successors, (1354), 9 states have internal predecessors, (1354), 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 15:23:25,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 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 15:23:25,620 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 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 15:23:25,621 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 89 predicate places. [2023-12-09 15:23:25,621 INFO L500 AbstractCegarLoop]: Abstraction has has 244 places, 664 transitions, 11752 flow [2023-12-09 15:23:25,621 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.0909090909091) internal successors, (1596), 11 states have internal predecessors, (1596), 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 15:23:25,621 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:25,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:25,642 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 15:23:25,827 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 15:23:25,827 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 15:23:25,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:25,828 INFO L85 PathProgramCache]: Analyzing trace with hash -690681402, now seen corresponding path program 1 times [2023-12-09 15:23:25,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:25,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565108711] [2023-12-09 15:23:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:25,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:25,927 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:23:25,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:25,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565108711] [2023-12-09 15:23:25,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565108711] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:25,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:25,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:23:25,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952993094] [2023-12-09 15:23:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:25,929 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:23:25,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:23:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:23:25,930 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:25,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 664 transitions, 11752 flow. Second operand has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 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 15:23:25,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:25,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:25,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:26,287 INFO L124 PetriNetUnfolderBase]: 471/1674 cut-off events. [2023-12-09 15:23:26,288 INFO L125 PetriNetUnfolderBase]: For 13004/14267 co-relation queries the response was YES. [2023-12-09 15:23:26,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13282 conditions, 1674 events. 471/1674 cut-off events. For 13004/14267 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 10780 event pairs, 0 based on Foata normal form. 44/1604 useless extension candidates. Maximal degree in co-relation 7900. Up to 621 conditions per place. [2023-12-09 15:23:26,304 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 315 selfloop transitions, 56 changer transitions 145/651 dead transitions. [2023-12-09 15:23:26,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 651 transitions, 12426 flow [2023-12-09 15:23:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:23:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:23:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 915 transitions. [2023-12-09 15:23:26,306 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8866279069767442 [2023-12-09 15:23:26,306 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 915 transitions. [2023-12-09 15:23:26,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 915 transitions. [2023-12-09 15:23:26,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:26,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 915 transitions. [2023-12-09 15:23:26,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 152.5) internal successors, (915), 6 states have internal predecessors, (915), 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 15:23:26,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:26,309 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:26,309 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 94 predicate places. [2023-12-09 15:23:26,310 INFO L500 AbstractCegarLoop]: Abstraction has has 249 places, 651 transitions, 12426 flow [2023-12-09 15:23:26,310 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 144.66666666666666) internal successors, (868), 6 states have internal predecessors, (868), 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 15:23:26,310 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:26,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:26,310 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-09 15:23:26,310 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 15:23:26,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:26,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1655200996, now seen corresponding path program 2 times [2023-12-09 15:23:26,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:26,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081494862] [2023-12-09 15:23:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:26,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:26,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:23:26,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:26,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081494862] [2023-12-09 15:23:26,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081494862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:26,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:26,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:26,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761803511] [2023-12-09 15:23:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:26,385 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:26,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:26,386 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:26,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 651 transitions, 12426 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:26,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:26,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:26,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:26,740 INFO L124 PetriNetUnfolderBase]: 442/1574 cut-off events. [2023-12-09 15:23:26,740 INFO L125 PetriNetUnfolderBase]: For 13264/14675 co-relation queries the response was YES. [2023-12-09 15:23:26,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13530 conditions, 1574 events. 442/1574 cut-off events. For 13264/14675 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 9866 event pairs, 0 based on Foata normal form. 29/1506 useless extension candidates. Maximal degree in co-relation 8181. Up to 580 conditions per place. [2023-12-09 15:23:26,753 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 309 selfloop transitions, 33 changer transitions 145/622 dead transitions. [2023-12-09 15:23:26,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 622 transitions, 12598 flow [2023-12-09 15:23:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:23:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:23:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 908 transitions. [2023-12-09 15:23:26,754 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8798449612403101 [2023-12-09 15:23:26,754 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 908 transitions. [2023-12-09 15:23:26,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 908 transitions. [2023-12-09 15:23:26,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:26,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 908 transitions. [2023-12-09 15:23:26,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.33333333333334) internal successors, (908), 6 states have internal predecessors, (908), 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 15:23:26,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:26,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:26,758 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 99 predicate places. [2023-12-09 15:23:26,758 INFO L500 AbstractCegarLoop]: Abstraction has has 254 places, 622 transitions, 12598 flow [2023-12-09 15:23:26,758 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:26,758 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:26,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:26,758 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-09 15:23:26,758 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 15:23:26,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash 2075472052, now seen corresponding path program 2 times [2023-12-09 15:23:26,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:26,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654077406] [2023-12-09 15:23:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:23:26,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:26,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654077406] [2023-12-09 15:23:26,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654077406] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:26,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:26,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:26,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808176575] [2023-12-09 15:23:26,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:26,831 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:26,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:26,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:26,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:26,832 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:26,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 622 transitions, 12598 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:26,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:26,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:26,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:27,150 INFO L124 PetriNetUnfolderBase]: 441/1587 cut-off events. [2023-12-09 15:23:27,150 INFO L125 PetriNetUnfolderBase]: For 15297/17180 co-relation queries the response was YES. [2023-12-09 15:23:27,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14427 conditions, 1587 events. 441/1587 cut-off events. For 15297/17180 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 10047 event pairs, 2 based on Foata normal form. 11/1507 useless extension candidates. Maximal degree in co-relation 8712. Up to 579 conditions per place. [2023-12-09 15:23:27,164 INFO L140 encePairwiseOnDemand]: 163/172 looper letters, 297 selfloop transitions, 31 changer transitions 149/612 dead transitions. [2023-12-09 15:23:27,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 612 transitions, 13196 flow [2023-12-09 15:23:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:23:27,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:23:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 904 transitions. [2023-12-09 15:23:27,168 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.875968992248062 [2023-12-09 15:23:27,168 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 904 transitions. [2023-12-09 15:23:27,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 904 transitions. [2023-12-09 15:23:27,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:27,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 904 transitions. [2023-12-09 15:23:27,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 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 15:23:27,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:27,173 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 172.0) internal successors, (1204), 7 states have internal predecessors, (1204), 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 15:23:27,173 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 104 predicate places. [2023-12-09 15:23:27,173 INFO L500 AbstractCegarLoop]: Abstraction has has 259 places, 612 transitions, 13196 flow [2023-12-09 15:23:27,174 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 15:23:27,174 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:27,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:27,174 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-09 15:23:27,174 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 15:23:27,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash 847107002, now seen corresponding path program 3 times [2023-12-09 15:23:27,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:27,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281106542] [2023-12-09 15:23:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:27,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:23:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281106542] [2023-12-09 15:23:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281106542] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089303371] [2023-12-09 15:23:27,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:23:27,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:27,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:27,278 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 15:23:27,280 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 15:23:27,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:23:27,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:27,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:23:27,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:23:27,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:23:27,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089303371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:27,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:27,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-12-09 15:23:27,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591255004] [2023-12-09 15:23:27,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:27,443 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:23:27,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:23:27,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:23:27,445 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 172 [2023-12-09 15:23:27,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 612 transitions, 13196 flow. Second operand has 11 states, 11 states have (on average 145.0) internal successors, (1595), 11 states have internal predecessors, (1595), 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 15:23:27,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:27,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 172 [2023-12-09 15:23:27,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:27,862 INFO L124 PetriNetUnfolderBase]: 469/1625 cut-off events. [2023-12-09 15:23:27,863 INFO L125 PetriNetUnfolderBase]: For 17170/19499 co-relation queries the response was YES. [2023-12-09 15:23:27,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16182 conditions, 1625 events. 469/1625 cut-off events. For 17170/19499 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 10309 event pairs, 1 based on Foata normal form. 42/1579 useless extension candidates. Maximal degree in co-relation 10322. Up to 581 conditions per place. [2023-12-09 15:23:27,878 INFO L140 encePairwiseOnDemand]: 162/172 looper letters, 246 selfloop transitions, 104 changer transitions 149/634 dead transitions. [2023-12-09 15:23:27,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 634 transitions, 14701 flow [2023-12-09 15:23:27,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-09 15:23:27,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-09 15:23:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1796 transitions. [2023-12-09 15:23:27,880 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8701550387596899 [2023-12-09 15:23:27,880 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1796 transitions. [2023-12-09 15:23:27,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1796 transitions. [2023-12-09 15:23:27,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:27,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1796 transitions. [2023-12-09 15:23:27,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 149.66666666666666) internal successors, (1796), 12 states have internal predecessors, (1796), 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 15:23:27,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 172.0) internal successors, (2236), 13 states have internal predecessors, (2236), 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 15:23:27,888 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 172.0) internal successors, (2236), 13 states have internal predecessors, (2236), 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 15:23:27,888 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 115 predicate places. [2023-12-09 15:23:27,888 INFO L500 AbstractCegarLoop]: Abstraction has has 270 places, 634 transitions, 14701 flow [2023-12-09 15:23:27,889 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 145.0) internal successors, (1595), 11 states have internal predecessors, (1595), 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 15:23:27,889 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:27,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:27,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:23:28,094 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-09 15:23:28,095 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 15:23:28,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:28,095 INFO L85 PathProgramCache]: Analyzing trace with hash 2109802034, now seen corresponding path program 1 times [2023-12-09 15:23:28,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:28,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526937353] [2023-12-09 15:23:28,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:28,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:28,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:28,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526937353] [2023-12-09 15:23:28,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526937353] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:28,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140683746] [2023-12-09 15:23:28,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:28,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:28,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:28,462 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 15:23:28,485 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 15:23:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:28,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:23:28,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:28,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:28,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2023-12-09 15:23:28,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:28,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140683746] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:28,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:28,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 20 [2023-12-09 15:23:28,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106966001] [2023-12-09 15:23:28,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:28,956 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:23:28,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:28,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:23:28,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:23:28,958 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 172 [2023-12-09 15:23:28,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 634 transitions, 14701 flow. Second operand has 20 states, 20 states have (on average 87.4) internal successors, (1748), 20 states have internal predecessors, (1748), 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 15:23:28,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:28,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 172 [2023-12-09 15:23:28,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:30,798 INFO L124 PetriNetUnfolderBase]: 2455/6409 cut-off events. [2023-12-09 15:23:30,798 INFO L125 PetriNetUnfolderBase]: For 71708/75244 co-relation queries the response was YES. [2023-12-09 15:23:30,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72202 conditions, 6409 events. 2455/6409 cut-off events. For 71708/75244 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 52683 event pairs, 171 based on Foata normal form. 19/5919 useless extension candidates. Maximal degree in co-relation 34251. Up to 3109 conditions per place. [2023-12-09 15:23:30,904 INFO L140 encePairwiseOnDemand]: 145/172 looper letters, 263 selfloop transitions, 149 changer transitions 215/939 dead transitions. [2023-12-09 15:23:30,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 939 transitions, 23963 flow [2023-12-09 15:23:30,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:23:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:23:30,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2560 transitions. [2023-12-09 15:23:30,908 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5132317562149158 [2023-12-09 15:23:30,908 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2560 transitions. [2023-12-09 15:23:30,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2560 transitions. [2023-12-09 15:23:30,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:30,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2560 transitions. [2023-12-09 15:23:30,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 88.27586206896552) internal successors, (2560), 29 states have internal predecessors, (2560), 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 15:23:30,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 172.0) internal successors, (5160), 30 states have internal predecessors, (5160), 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 15:23:30,916 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 172.0) internal successors, (5160), 30 states have internal predecessors, (5160), 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 15:23:30,916 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 143 predicate places. [2023-12-09 15:23:30,916 INFO L500 AbstractCegarLoop]: Abstraction has has 298 places, 939 transitions, 23963 flow [2023-12-09 15:23:30,917 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 87.4) internal successors, (1748), 20 states have internal predecessors, (1748), 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 15:23:30,917 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:30,917 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:30,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-09 15:23:31,121 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:31,122 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 15:23:31,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1337013722, now seen corresponding path program 2 times [2023-12-09 15:23:31,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:31,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096098018] [2023-12-09 15:23:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:31,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:31,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:31,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096098018] [2023-12-09 15:23:31,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096098018] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:31,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288598558] [2023-12-09 15:23:31,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:23:31,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:31,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:31,439 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 15:23:31,441 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 15:23:31,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:23:31,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:31,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:23:31,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:31,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:31,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:31,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 12 [2023-12-09 15:23:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:23:31,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288598558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:31,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:31,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 20 [2023-12-09 15:23:31,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027357189] [2023-12-09 15:23:31,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:31,899 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:23:31,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:31,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:23:31,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:23:31,901 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 172 [2023-12-09 15:23:31,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 939 transitions, 23963 flow. Second operand has 20 states, 20 states have (on average 87.4) internal successors, (1748), 20 states have internal predecessors, (1748), 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 15:23:31,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:31,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 172 [2023-12-09 15:23:31,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:36,076 INFO L124 PetriNetUnfolderBase]: 6406/16006 cut-off events. [2023-12-09 15:23:36,076 INFO L125 PetriNetUnfolderBase]: For 169717/175412 co-relation queries the response was YES. [2023-12-09 15:23:36,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187683 conditions, 16006 events. 6406/16006 cut-off events. For 169717/175412 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 154809 event pairs, 343 based on Foata normal form. 30/14797 useless extension candidates. Maximal degree in co-relation 49499. Up to 7829 conditions per place. [2023-12-09 15:23:36,356 INFO L140 encePairwiseOnDemand]: 146/172 looper letters, 491 selfloop transitions, 251 changer transitions 470/1525 dead transitions. [2023-12-09 15:23:36,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 1525 transitions, 44393 flow [2023-12-09 15:23:36,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-09 15:23:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-09 15:23:36,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2363 transitions. [2023-12-09 15:23:36,362 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5088285960378983 [2023-12-09 15:23:36,362 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2363 transitions. [2023-12-09 15:23:36,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2363 transitions. [2023-12-09 15:23:36,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:36,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2363 transitions. [2023-12-09 15:23:36,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 87.51851851851852) internal successors, (2363), 27 states have internal predecessors, (2363), 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 15:23:36,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 172.0) internal successors, (4816), 28 states have internal predecessors, (4816), 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 15:23:36,370 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 172.0) internal successors, (4816), 28 states have internal predecessors, (4816), 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 15:23:36,370 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 169 predicate places. [2023-12-09 15:23:36,370 INFO L500 AbstractCegarLoop]: Abstraction has has 324 places, 1525 transitions, 44393 flow [2023-12-09 15:23:36,371 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 87.4) internal successors, (1748), 20 states have internal predecessors, (1748), 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 15:23:36,371 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:36,371 INFO L233 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:36,393 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 15:23:36,577 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,SelfDestructingSolverStorable17 [2023-12-09 15:23:36,577 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 15:23:36,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:36,578 INFO L85 PathProgramCache]: Analyzing trace with hash 586950518, now seen corresponding path program 3 times [2023-12-09 15:23:36,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:36,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252242123] [2023-12-09 15:23:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:36,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:23:37,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:37,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252242123] [2023-12-09 15:23:37,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252242123] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:37,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554221848] [2023-12-09 15:23:37,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:23:37,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:37,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:37,373 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 15:23:37,408 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 15:23:37,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:23:37,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:37,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-09 15:23:37,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:38,114 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 15:23:38,349 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 15:23:38,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:23:38,508 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-12-09 15:23:38,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 43 [2023-12-09 15:23:38,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2023-12-09 15:23:38,631 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:23:38,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:39,142 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_418 (Array Int Int)) (v_ArrVal_419 (Array Int Int)) (~f~0.offset Int) (v_~counter~0_136 Int) (~f~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_418))) (let ((.cse0 (select (select .cse1 ~f~0.base) (+ (* c_~counter~0 4) ~f~0.offset)))) (or (< .cse0 v_~counter~0_136) (< c_~n_inv~0 (+ .cse0 1)) (not (= (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* .cse0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) c_~counter~0)) (< v_~counter~0_136 0) (= (select (select (store .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_419) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* v_~counter~0_136 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 0))))) is different from false [2023-12-09 15:23:39,160 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_418 (Array Int Int)) (v_ArrVal_419 (Array Int Int)) (~f~0.offset Int) (v_~counter~0_136 Int) (~f~0.base Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_418))) (let ((.cse0 (select (select .cse1 ~f~0.base) (+ (* c_~counter~0 4) ~f~0.offset)))) (or (< .cse0 v_~counter~0_136) (= (select (select (store .cse1 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_419) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* v_~counter~0_136 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 0) (< c_~n_inv~0 (+ .cse0 1)) (not (= c_~counter~0 (select (select .cse1 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* .cse0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (< v_~counter~0_136 0))))) is different from false [2023-12-09 15:23:39,468 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:23:39,468 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 134 treesize of output 86 [2023-12-09 15:23:39,502 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:23:39,502 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 232 treesize of output 281 [2023-12-09 15:23:39,546 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:23:39,547 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 186 treesize of output 217 [2023-12-09 15:23:39,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 42 [2023-12-09 15:23:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:23:42,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554221848] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:42,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:42,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 21] total 51 [2023-12-09 15:23:42,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501522454] [2023-12-09 15:23:42,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:42,919 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-09 15:23:42,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:42,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-09 15:23:42,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2148, Unknown=7, NotChecked=190, Total=2550 [2023-12-09 15:23:42,923 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 172 [2023-12-09 15:23:42,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 1525 transitions, 44393 flow. Second operand has 51 states, 51 states have (on average 64.68627450980392) internal successors, (3299), 51 states have internal predecessors, (3299), 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 15:23:42,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:42,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 172 [2023-12-09 15:23:42,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:43,008 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (< c_~n_inv~0 1)) (.cse10 (= c_~counter~0 0))) (let ((.cse5 (<= c_~n_inv~0 1)) (.cse7 (or .cse6 .cse10))) (let ((.cse3 (* c_~counter~0 4)) (.cse0 (and .cse5 (or (< |c_#StackHeapBarrier| (+ |c_ULTIMATE.start_main_~#t2~0#1.base| 1)) .cse6) .cse7)) (.cse12 (and .cse5 (or .cse6 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|))) .cse7)) (.cse4 (< 1 |c_ULTIMATE.start_create_fresh_int_array_~size#1|))) (and (or .cse0 (< 1 |c_ULTIMATE.start_create_fresh_int_array_#in~size#1|)) (forall ((v_ArrVal_418 (Array Int Int)) (v_ArrVal_419 (Array Int Int)) (~f~0.offset Int) (v_~counter~0_136 Int) (~f~0.base Int)) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_418))) (let ((.cse1 (select (select .cse2 ~f~0.base) (+ .cse3 ~f~0.offset)))) (or (< .cse1 v_~counter~0_136) (< c_~n_inv~0 (+ .cse1 1)) (= (select (select (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_419) |c_ULTIMATE.start_main_#t~ret19#1.base|) (+ (* v_~counter~0_136 4) |c_ULTIMATE.start_main_#t~ret19#1.offset|)) 0) (not (= (select (select .cse2 |c_ULTIMATE.start_main_#t~ret19#1.base|) (+ (* .cse1 4) |c_ULTIMATE.start_main_#t~ret19#1.offset|)) c_~counter~0)) (< v_~counter~0_136 0))))) (or (forall ((v_ArrVal_419 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_419) c_~f_inv~0.base) (+ .cse3 c_~f_inv~0.offset)) 0)) (< c_~n_inv~0 (+ c_~counter~0 1)) (< c_~counter~0 0)) (or .cse4 (and .cse5 (or .cse6 (not (= |c_ULTIMATE.start_create_fresh_int_array_#t~malloc26#1.base| |c_ULTIMATE.start_main_~#t2~0#1.base|))) .cse7)) (forall ((v_ArrVal_418 (Array Int Int)) (v_ArrVal_419 (Array Int Int)) (~f~0.offset Int) (v_~counter~0_136 Int) (~f~0.base Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_418))) (let ((.cse9 (select (select .cse8 ~f~0.base) (+ .cse3 ~f~0.offset)))) (or (not (= (select (select .cse8 c_~f_inv~0.base) (+ (* .cse9 4) c_~f_inv~0.offset)) c_~counter~0)) (< .cse9 v_~counter~0_136) (< c_~n_inv~0 (+ .cse9 1)) (= (select (select (store .cse8 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_419) c_~f_inv~0.base) (+ (* v_~counter~0_136 4) c_~f_inv~0.offset)) 0) (< v_~counter~0_136 0))))) .cse10 (forall ((~f~0.offset Int) (~f~0.base Int)) (let ((.cse11 (select (select |c_#memory_int| ~f~0.base) (+ .cse3 ~f~0.offset)))) (or (forall ((v_ArrVal_419 (Array Int Int)) (v_~counter~0_136 Int)) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_419) c_~f_inv~0.base) (+ (* v_~counter~0_136 4) c_~f_inv~0.offset)) 0) (< .cse11 v_~counter~0_136) (< v_~counter~0_136 0))) (not (= (select (select |c_#memory_int| c_~f_inv~0.base) (+ (* .cse11 4) c_~f_inv~0.offset)) c_~counter~0)) (< c_~n_inv~0 (+ .cse11 1))))) (or (< (+ |c_ULTIMATE.start_create_fresh_int_array_~i~2#1| 1) |c_ULTIMATE.start_create_fresh_int_array_~size#1|) .cse12) (or (forall ((v_ArrVal_418 (Array Int Int)) (v_ArrVal_419 (Array Int Int)) (~f~0.offset Int) (v_~counter~0_136 Int) (~f~0.base Int)) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_418))) (let ((.cse13 (select (select .cse14 ~f~0.base) (+ .cse3 ~f~0.offset)))) (or (< .cse13 v_~counter~0_136) (= (select (select (store .cse14 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_419) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* v_~counter~0_136 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 0) (< c_~n_inv~0 (+ .cse13 1)) (not (= c_~counter~0 (select (select .cse14 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* .cse13 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)))) (< v_~counter~0_136 0))))) (< (+ |c_ULTIMATE.start_create_fresh_int_array_#t~post27#1| 1) |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (or .cse4 .cse0) (or .cse12 .cse4))))) is different from false [2023-12-09 15:23:53,198 INFO L124 PetriNetUnfolderBase]: 8694/21683 cut-off events. [2023-12-09 15:23:53,198 INFO L125 PetriNetUnfolderBase]: For 258404/265794 co-relation queries the response was YES. [2023-12-09 15:23:53,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259243 conditions, 21683 events. 8694/21683 cut-off events. For 258404/265794 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 224497 event pairs, 454 based on Foata normal form. 49/19945 useless extension candidates. Maximal degree in co-relation 67909. Up to 11412 conditions per place. [2023-12-09 15:23:53,487 INFO L140 encePairwiseOnDemand]: 135/172 looper letters, 533 selfloop transitions, 255 changer transitions 819/1902 dead transitions. [2023-12-09 15:23:53,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1902 transitions, 59361 flow [2023-12-09 15:23:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-09 15:23:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-12-09 15:23:53,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3142 transitions. [2023-12-09 15:23:53,493 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3728049359278595 [2023-12-09 15:23:53,493 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 3142 transitions. [2023-12-09 15:23:53,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 3142 transitions. [2023-12-09 15:23:53,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:53,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 3142 transitions. [2023-12-09 15:23:53,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 64.12244897959184) internal successors, (3142), 49 states have internal predecessors, (3142), 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 15:23:53,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 172.0) internal successors, (8600), 50 states have internal predecessors, (8600), 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 15:23:53,505 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 172.0) internal successors, (8600), 50 states have internal predecessors, (8600), 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 15:23:53,505 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 217 predicate places. [2023-12-09 15:23:53,505 INFO L500 AbstractCegarLoop]: Abstraction has has 372 places, 1902 transitions, 59361 flow [2023-12-09 15:23:53,506 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 64.68627450980392) internal successors, (3299), 51 states have internal predecessors, (3299), 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 15:23:53,506 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:53,507 INFO L233 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:53,512 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 15:23:53,712 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:53,712 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 15:23:53,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1716043764, now seen corresponding path program 4 times [2023-12-09 15:23:53,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953069366] [2023-12-09 15:23:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:53,965 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:23:53,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:53,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953069366] [2023-12-09 15:23:53,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953069366] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:53,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722864937] [2023-12-09 15:23:53,966 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:23:53,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:53,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:53,967 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 15:23:53,969 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 15:23:54,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:23:54,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:54,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:23:54,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:23:54,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:23:54,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722864937] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:54,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:54,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-12-09 15:23:54,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937602451] [2023-12-09 15:23:54,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:54,267 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-09 15:23:54,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:54,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-09 15:23:54,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2023-12-09 15:23:54,270 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 172 [2023-12-09 15:23:54,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 1902 transitions, 59361 flow. Second operand has 21 states, 21 states have (on average 142.66666666666666) internal successors, (2996), 21 states have internal predecessors, (2996), 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 15:23:54,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:54,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 172 [2023-12-09 15:23:54,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:09,515 INFO L124 PetriNetUnfolderBase]: 14825/33791 cut-off events. [2023-12-09 15:24:09,515 INFO L125 PetriNetUnfolderBase]: For 533480/550896 co-relation queries the response was YES. [2023-12-09 15:24:09,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411146 conditions, 33791 events. 14825/33791 cut-off events. For 533480/550896 co-relation queries the response was YES. Maximal size of possible extension queue 1068. Compared 348847 event pairs, 1278 based on Foata normal form. 305/31463 useless extension candidates. Maximal degree in co-relation 110974. Up to 18706 conditions per place. [2023-12-09 15:24:10,095 INFO L140 encePairwiseOnDemand]: 158/172 looper letters, 1100 selfloop transitions, 216 changer transitions 1153/2729 dead transitions. [2023-12-09 15:24:10,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 2729 transitions, 94245 flow [2023-12-09 15:24:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-09 15:24:10,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-12-09 15:24:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7243 transitions. [2023-12-09 15:24:10,108 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8422093023255814 [2023-12-09 15:24:10,108 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7243 transitions. [2023-12-09 15:24:10,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7243 transitions. [2023-12-09 15:24:10,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:10,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7243 transitions. [2023-12-09 15:24:10,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 144.86) internal successors, (7243), 50 states have internal predecessors, (7243), 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 15:24:10,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 172.0) internal successors, (8772), 51 states have internal predecessors, (8772), 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 15:24:10,133 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 172.0) internal successors, (8772), 51 states have internal predecessors, (8772), 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 15:24:10,134 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 266 predicate places. [2023-12-09 15:24:10,134 INFO L500 AbstractCegarLoop]: Abstraction has has 421 places, 2729 transitions, 94245 flow [2023-12-09 15:24:10,134 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 142.66666666666666) internal successors, (2996), 21 states have internal predecessors, (2996), 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 15:24:10,134 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:10,135 INFO L233 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:10,157 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 15:24:10,340 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:10,341 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:10,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:10,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1023333950, now seen corresponding path program 5 times [2023-12-09 15:24:10,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:10,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202897029] [2023-12-09 15:24:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:10,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:24:10,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:10,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202897029] [2023-12-09 15:24:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202897029] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:10,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124793941] [2023-12-09 15:24:10,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:24:10,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:10,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:10,465 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 15:24:10,467 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 15:24:10,595 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:24:10,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:10,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:24:10,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:10,702 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:24:10,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:10,772 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:24:10,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124793941] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:10,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:10,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-12-09 15:24:10,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802377854] [2023-12-09 15:24:10,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:10,773 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:24:10,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:24:10,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:24:10,775 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 172 [2023-12-09 15:24:10,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 2729 transitions, 94245 flow. Second operand has 19 states, 19 states have (on average 142.73684210526315) internal successors, (2712), 19 states have internal predecessors, (2712), 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 15:24:10,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:10,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 172 [2023-12-09 15:24:10,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:39,595 INFO L124 PetriNetUnfolderBase]: 19248/42765 cut-off events. [2023-12-09 15:24:39,595 INFO L125 PetriNetUnfolderBase]: For 685068/701364 co-relation queries the response was YES. [2023-12-09 15:24:40,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554823 conditions, 42765 events. 19248/42765 cut-off events. For 685068/701364 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 447906 event pairs, 1185 based on Foata normal form. 390/39703 useless extension candidates. Maximal degree in co-relation 148031. Up to 24855 conditions per place. [2023-12-09 15:24:40,350 INFO L140 encePairwiseOnDemand]: 158/172 looper letters, 1554 selfloop transitions, 258 changer transitions 1377/3449 dead transitions. [2023-12-09 15:24:40,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 3449 transitions, 127351 flow [2023-12-09 15:24:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-09 15:24:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-12-09 15:24:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 6535 transitions. [2023-12-09 15:24:40,354 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8443152454780362 [2023-12-09 15:24:40,355 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 6535 transitions. [2023-12-09 15:24:40,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 6535 transitions. [2023-12-09 15:24:40,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:40,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 6535 transitions. [2023-12-09 15:24:40,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 145.22222222222223) internal successors, (6535), 45 states have internal predecessors, (6535), 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 15:24:40,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 172.0) internal successors, (7912), 46 states have internal predecessors, (7912), 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 15:24:40,368 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 172.0) internal successors, (7912), 46 states have internal predecessors, (7912), 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 15:24:40,368 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 310 predicate places. [2023-12-09 15:24:40,368 INFO L500 AbstractCegarLoop]: Abstraction has has 465 places, 3449 transitions, 127351 flow [2023-12-09 15:24:40,368 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 142.73684210526315) internal successors, (2712), 19 states have internal predecessors, (2712), 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 15:24:40,369 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:40,369 INFO L233 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:40,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 15:24:40,573 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,SelfDestructingSolverStorable20 [2023-12-09 15:24:40,574 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:40,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:40,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1909109398, now seen corresponding path program 6 times [2023-12-09 15:24:40,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:40,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641143469] [2023-12-09 15:24:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:40,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:40,717 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:24:40,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641143469] [2023-12-09 15:24:40,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641143469] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587817184] [2023-12-09 15:24:40,717 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:24:40,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:40,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:40,718 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 15:24:40,733 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 15:24:40,954 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:24:40,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:40,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:24:40,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:24:41,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:41,125 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:24:41,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587817184] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:41,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:41,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-12-09 15:24:41,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990320715] [2023-12-09 15:24:41,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:41,127 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-09 15:24:41,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-09 15:24:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-12-09 15:24:41,130 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 172 [2023-12-09 15:24:41,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 3449 transitions, 127351 flow. Second operand has 21 states, 21 states have (on average 142.76190476190476) internal successors, (2998), 21 states have internal predecessors, (2998), 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 15:24:41,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:41,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 172 [2023-12-09 15:24:41,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:25:44,268 INFO L124 PetriNetUnfolderBase]: 30118/62988 cut-off events. [2023-12-09 15:25:44,268 INFO L125 PetriNetUnfolderBase]: For 971546/987907 co-relation queries the response was YES. [2023-12-09 15:25:45,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895358 conditions, 62988 events. 30118/62988 cut-off events. For 971546/987907 co-relation queries the response was YES. Maximal size of possible extension queue 1772. Compared 662100 event pairs, 1089 based on Foata normal form. 374/58156 useless extension candidates. Maximal degree in co-relation 255576. Up to 40989 conditions per place. [2023-12-09 15:25:45,793 INFO L140 encePairwiseOnDemand]: 158/172 looper letters, 2321 selfloop transitions, 510 changer transitions 1738/4829 dead transitions. [2023-12-09 15:25:45,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 4829 transitions, 189367 flow [2023-12-09 15:25:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-09 15:25:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-12-09 15:25:45,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 9041 transitions. [2023-12-09 15:25:45,802 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8478057014253564 [2023-12-09 15:25:45,802 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 9041 transitions. [2023-12-09 15:25:45,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 9041 transitions. [2023-12-09 15:25:45,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:25:45,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 9041 transitions. [2023-12-09 15:25:45,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 145.82258064516128) internal successors, (9041), 62 states have internal predecessors, (9041), 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 15:25:45,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 172.0) internal successors, (10836), 63 states have internal predecessors, (10836), 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 15:25:45,822 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 172.0) internal successors, (10836), 63 states have internal predecessors, (10836), 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 15:25:45,823 INFO L308 CegarLoopForPetriNet]: 155 programPoint places, 365 predicate places. [2023-12-09 15:25:45,823 INFO L500 AbstractCegarLoop]: Abstraction has has 520 places, 4829 transitions, 189367 flow [2023-12-09 15:25:45,823 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 142.76190476190476) internal successors, (2998), 21 states have internal predecessors, (2998), 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 15:25:45,823 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:25:45,824 INFO L233 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:25:45,829 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 15:25:46,029 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-09 15:25:46,030 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:25:46,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:25:46,030 INFO L85 PathProgramCache]: Analyzing trace with hash -60510182, now seen corresponding path program 7 times [2023-12-09 15:25:46,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:25:46,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988236355] [2023-12-09 15:25:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:25:46,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:25:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:25:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:25:46,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:25:46,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988236355] [2023-12-09 15:25:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988236355] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:25:46,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042642929] [2023-12-09 15:25:46,148 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:25:46,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:25:46,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:25:46,165 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 15:25:46,200 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 15:25:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:25:46,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:25:46,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:25:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:25:46,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:25:46,503 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-09 15:25:46,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042642929] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:25:46,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:25:46,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-12-09 15:25:46,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914753717] [2023-12-09 15:25:46,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:25:46,504 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-09 15:25:46,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:25:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-09 15:25:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-12-09 15:25:46,507 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 172 [2023-12-09 15:25:46,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 4829 transitions, 189367 flow. Second operand has 21 states, 21 states have (on average 142.8095238095238) internal successors, (2999), 21 states have internal predecessors, (2999), 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 15:25:46,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:25:46,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 172 [2023-12-09 15:25:46,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:27:23,603 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 15:27:23,603 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 15:27:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-09 15:27:24,502 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:27:24,509 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 15:27:24,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-12-09 15:27:24,707 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,SelfDestructingSolverStorable22 [2023-12-09 15:27:24,707 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 140/172 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 836827 conditions, 54623 events (26238/54622 cut-off events. For 836366/849894 co-relation queries the response was YES. Maximal size of possible extension queue 2506. Compared 609190 event pairs, 999 based on Foata normal form. 314/52434 useless extension candidates. Maximal degree in co-relation 312300. Up to 35783 conditions per place.). [2023-12-09 15:27:24,709 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:27:24,709 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:27:24,709 INFO L457 BasicCegarLoop]: Path program histogram: [7, 5, 4, 3, 2, 1, 1] [2023-12-09 15:27:24,712 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:27:24,712 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:27:24,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:27:24 BasicIcfg [2023-12-09 15:27:24,715 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:27:24,716 INFO L158 Benchmark]: Toolchain (without parser) took 247089.52ms. Allocated memory was 318.8MB in the beginning and 5.0GB in the end (delta: 4.7GB). Free memory was 269.0MB in the beginning and 2.8GB in the end (delta: -2.5GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-09 15:27:24,716 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 217.1MB. Free memory is still 168.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:27:24,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.18ms. Allocated memory is still 318.8MB. Free memory was 268.7MB in the beginning and 256.9MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:27:24,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.51ms. Allocated memory is still 318.8MB. Free memory was 256.9MB in the beginning and 254.5MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-09 15:27:24,717 INFO L158 Benchmark]: Boogie Preprocessor took 20.99ms. Allocated memory is still 318.8MB. Free memory was 254.5MB in the beginning and 252.7MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:27:24,717 INFO L158 Benchmark]: RCFGBuilder took 588.34ms. Allocated memory is still 318.8MB. Free memory was 252.7MB in the beginning and 275.3MB in the end (delta: -22.6MB). Peak memory consumption was 31.4MB. Max. memory is 8.0GB. [2023-12-09 15:27:24,717 INFO L158 Benchmark]: TraceAbstraction took 246238.47ms. Allocated memory was 318.8MB in the beginning and 5.0GB in the end (delta: 4.7GB). Free memory was 274.8MB in the beginning and 2.8GB in the end (delta: -2.5GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-09 15:27:24,718 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 217.1MB. Free memory is still 168.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 202.18ms. Allocated memory is still 318.8MB. Free memory was 268.7MB in the beginning and 256.9MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.51ms. Allocated memory is still 318.8MB. Free memory was 256.9MB in the beginning and 254.5MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.99ms. Allocated memory is still 318.8MB. Free memory was 254.5MB in the beginning and 252.7MB in the end (delta: 1.8MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 588.34ms. Allocated memory is still 318.8MB. Free memory was 252.7MB in the beginning and 275.3MB in the end (delta: -22.6MB). Peak memory consumption was 31.4MB. Max. memory is 8.0GB. * TraceAbstraction took 246238.47ms. Allocated memory was 318.8MB in the beginning and 5.0GB in the end (delta: 4.7GB). Free memory was 274.8MB in the beginning and 2.8GB in the end (delta: -2.5GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 140/172 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 836827 conditions, 54623 events (26238/54622 cut-off events. For 836366/849894 co-relation queries the response was YES. Maximal size of possible extension queue 2506. Compared 609190 event pairs, 999 based on Foata normal form. 314/52434 useless extension candidates. Maximal degree in co-relation 312300. Up to 35783 conditions per place.). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 140/172 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 836827 conditions, 54623 events (26238/54622 cut-off events. For 836366/849894 co-relation queries the response was YES. Maximal size of possible extension queue 2506. Compared 609190 event pairs, 999 based on Foata normal form. 314/52434 useless extension candidates. Maximal degree in co-relation 312300. Up to 35783 conditions per place.). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 140/172 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 836827 conditions, 54623 events (26238/54622 cut-off events. For 836366/849894 co-relation queries the response was YES. Maximal size of possible extension queue 2506. Compared 609190 event pairs, 999 based on Foata normal form. 314/52434 useless extension candidates. Maximal degree in co-relation 312300. Up to 35783 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 184 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: 246.1s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 229.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 23 mSolverCounterUnknown, 2643 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2643 mSDsluCounter, 4439 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 423 IncrementalHoareTripleChecker+Unchecked, 3744 mSDsCounter, 227 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7039 IncrementalHoareTripleChecker+Invalid, 7712 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 227 mSolverCounterUnsat, 695 mSDtfsCounter, 7039 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4012 GetRequests, 3440 SyntacticMatches, 16 SemanticMatches, 556 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 8817 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189367occurred in iteration=22, InterpolantAutomatonStates: 393, 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: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 5153 NumberOfCodeBlocks, 5119 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 6747 ConstructedInterpolants, 36 QuantifiedInterpolants, 17581 SizeOfPredicates, 114 NumberOfNonLiveVariables, 4220 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 47 InterpolantComputations, 12 PerfectInterpolantSequences, 259/348 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