/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 23:24:47,766 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 23:24:47,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 23:24:47,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 23:24:47,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 23:24:47,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 23:24:47,878 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 23:24:47,879 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 23:24:47,879 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 23:24:47,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 23:24:47,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 23:24:47,883 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 23:24:47,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 23:24:47,884 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 23:24:47,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 23:24:47,884 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 23:24:47,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 23:24:47,885 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 23:24:47,885 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 23:24:47,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 23:24:47,885 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 23:24:47,886 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 23:24:47,886 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 23:24:47,886 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 23:24:47,887 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 23:24:47,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:24:47,887 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 23:24:47,887 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 23:24:47,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 23:24:47,888 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 23:24:47,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 23:24:47,889 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 23:24:47,889 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 23:24:47,889 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 23:24:48,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 23:24:48,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 23:24:48,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 23:24:48,080 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 23:24:48,081 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 23:24:48,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-11-29 23:24:49,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 23:24:49,370 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 23:24:49,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-11-29 23:24:49,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11d51516/c8177c68a1e643abbde7a2b697bedfda/FLAGf1bd2d956 [2023-11-29 23:24:49,388 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c11d51516/c8177c68a1e643abbde7a2b697bedfda [2023-11-29 23:24:49,390 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 23:24:49,391 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 23:24:49,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 23:24:49,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 23:24:49,396 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 23:24:49,396 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,397 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f65410c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49, skipping insertion in model container [2023-11-29 23:24:49,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,415 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 23:24:49,552 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/test-easy1.wvr.c[1902,1915] [2023-11-29 23:24:49,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:24:49,563 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 23:24:49,578 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/test-easy1.wvr.c[1902,1915] [2023-11-29 23:24:49,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:24:49,591 INFO L206 MainTranslator]: Completed translation [2023-11-29 23:24:49,591 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49 WrapperNode [2023-11-29 23:24:49,591 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 23:24:49,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 23:24:49,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 23:24:49,593 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 23:24:49,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,604 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,617 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-11-29 23:24:49,617 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 23:24:49,618 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 23:24:49,618 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 23:24:49,618 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 23:24:49,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,628 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,632 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,635 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,640 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 23:24:49,641 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 23:24:49,641 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 23:24:49,641 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 23:24:49,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (1/1) ... [2023-11-29 23:24:49,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:24:49,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:24:49,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 23:24:49,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 23:24:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 23:24:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 23:24:49,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 23:24:49,707 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 23:24:49,707 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 23:24:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 23:24:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 23:24:49,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 23:24:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 23:24:49,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 23:24:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 23:24:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 23:24:49,710 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 23:24:49,823 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 23:24:49,824 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 23:24:50,021 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 23:24:50,031 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 23:24:50,032 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 23:24:50,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:24:50 BoogieIcfgContainer [2023-11-29 23:24:50,033 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 23:24:50,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 23:24:50,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 23:24:50,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 23:24:50,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:24:49" (1/3) ... [2023-11-29 23:24:50,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be48263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:24:50, skipping insertion in model container [2023-11-29 23:24:50,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:24:49" (2/3) ... [2023-11-29 23:24:50,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4be48263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:24:50, skipping insertion in model container [2023-11-29 23:24:50,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:24:50" (3/3) ... [2023-11-29 23:24:50,042 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-11-29 23:24:50,056 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 23:24:50,056 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 23:24:50,057 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 23:24:50,107 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 23:24:50,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 182 flow [2023-11-29 23:24:50,173 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-11-29 23:24:50,174 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:24:50,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 6/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-11-29 23:24:50,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 84 transitions, 182 flow [2023-11-29 23:24:50,184 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 73 transitions, 158 flow [2023-11-29 23:24:50,196 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 23:24:50,201 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;@60e4b349, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 23:24:50,202 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 23:24:50,222 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 23:24:50,222 INFO L124 PetriNetUnfolderBase]: 6/72 cut-off events. [2023-11-29 23:24:50,222 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:24:50,222 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:24:50,223 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:24:50,223 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:24:50,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:24:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -862175159, now seen corresponding path program 1 times [2023-11-29 23:24:50,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:24:50,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561357857] [2023-11-29 23:24:50,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:50,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:24:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:50,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:24:50,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561357857] [2023-11-29 23:24:50,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561357857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:24:50,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:24:50,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 23:24:50,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519205769] [2023-11-29 23:24:50,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:24:50,808 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 23:24:50,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:24:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 23:24:50,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 23:24:50,844 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2023-11-29 23:24:50,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:50,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:24:50,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2023-11-29 23:24:50,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:24:51,068 INFO L124 PetriNetUnfolderBase]: 64/223 cut-off events. [2023-11-29 23:24:51,069 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-29 23:24:51,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 223 events. 64/223 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 813 event pairs, 30 based on Foata normal form. 3/189 useless extension candidates. Maximal degree in co-relation 260. Up to 91 conditions per place. [2023-11-29 23:24:51,074 INFO L140 encePairwiseOnDemand]: 70/84 looper letters, 33 selfloop transitions, 5 changer transitions 7/84 dead transitions. [2023-11-29 23:24:51,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 279 flow [2023-11-29 23:24:51,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 23:24:51,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 23:24:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 494 transitions. [2023-11-29 23:24:51,093 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6534391534391535 [2023-11-29 23:24:51,095 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 494 transitions. [2023-11-29 23:24:51,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 494 transitions. [2023-11-29 23:24:51,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:24:51,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 494 transitions. [2023-11-29 23:24:51,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 54.888888888888886) internal successors, (494), 9 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:51,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:51,110 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:51,113 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2023-11-29 23:24:51,114 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 279 flow [2023-11-29 23:24:51,114 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:51,114 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:24:51,114 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:24:51,115 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 23:24:51,115 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:24:51,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:24:51,119 INFO L85 PathProgramCache]: Analyzing trace with hash -245989812, now seen corresponding path program 1 times [2023-11-29 23:24:51,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:24:51,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674566976] [2023-11-29 23:24:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:51,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:24:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:51,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:51,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:24:51,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674566976] [2023-11-29 23:24:51,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674566976] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:24:51,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715733209] [2023-11-29 23:24:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:51,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:24:51,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:24:51,404 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:24:51,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 23:24:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:51,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 23:24:51,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:24:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:51,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:24:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:51,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715733209] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 23:24:51,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 23:24:51,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2023-11-29 23:24:51,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700723512] [2023-11-29 23:24:51,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:24:51,948 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:24:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:24:51,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:24:51,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-29 23:24:51,951 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2023-11-29 23:24:51,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:51,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:24:51,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2023-11-29 23:24:51,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:24:52,066 INFO L124 PetriNetUnfolderBase]: 62/264 cut-off events. [2023-11-29 23:24:52,066 INFO L125 PetriNetUnfolderBase]: For 124/148 co-relation queries the response was YES. [2023-11-29 23:24:52,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 264 events. 62/264 cut-off events. For 124/148 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1066 event pairs, 16 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 383. Up to 117 conditions per place. [2023-11-29 23:24:52,074 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 54 selfloop transitions, 12 changer transitions 9/114 dead transitions. [2023-11-29 23:24:52,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 567 flow [2023-11-29 23:24:52,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 23:24:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 23:24:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 402 transitions. [2023-11-29 23:24:52,076 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2023-11-29 23:24:52,076 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 402 transitions. [2023-11-29 23:24:52,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 402 transitions. [2023-11-29 23:24:52,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:24:52,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 402 transitions. [2023-11-29 23:24:52,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,080 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,080 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2023-11-29 23:24:52,080 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 567 flow [2023-11-29 23:24:52,081 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,081 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:24:52,081 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:24:52,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 23:24:52,286 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 [2023-11-29 23:24:52,286 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:24:52,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:24:52,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1780232988, now seen corresponding path program 2 times [2023-11-29 23:24:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:24:52,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371004321] [2023-11-29 23:24:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:24:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:52,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:24:52,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371004321] [2023-11-29 23:24:52,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371004321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:24:52,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:24:52,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:24:52,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220905375] [2023-11-29 23:24:52,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:24:52,471 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:24:52,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:24:52,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:24:52,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:24:52,473 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2023-11-29 23:24:52,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 567 flow. Second operand has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:24:52,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2023-11-29 23:24:52,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:24:52,576 INFO L124 PetriNetUnfolderBase]: 59/248 cut-off events. [2023-11-29 23:24:52,576 INFO L125 PetriNetUnfolderBase]: For 226/280 co-relation queries the response was YES. [2023-11-29 23:24:52,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 248 events. 59/248 cut-off events. For 226/280 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 943 event pairs, 3 based on Foata normal form. 9/230 useless extension candidates. Maximal degree in co-relation 479. Up to 104 conditions per place. [2023-11-29 23:24:52,579 INFO L140 encePairwiseOnDemand]: 74/84 looper letters, 51 selfloop transitions, 7 changer transitions 14/111 dead transitions. [2023-11-29 23:24:52,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 693 flow [2023-11-29 23:24:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 23:24:52,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 23:24:52,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 395 transitions. [2023-11-29 23:24:52,580 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6717687074829932 [2023-11-29 23:24:52,580 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 395 transitions. [2023-11-29 23:24:52,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 395 transitions. [2023-11-29 23:24:52,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:24:52,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 395 transitions. [2023-11-29 23:24:52,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,584 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,585 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2023-11-29 23:24:52,585 INFO L500 AbstractCegarLoop]: Abstraction has has 94 places, 111 transitions, 693 flow [2023-11-29 23:24:52,585 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,585 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:24:52,585 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:24:52,586 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 23:24:52,586 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:24:52,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:24:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1425697040, now seen corresponding path program 1 times [2023-11-29 23:24:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:24:52,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031265515] [2023-11-29 23:24:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:52,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:24:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:52,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:24:52,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031265515] [2023-11-29 23:24:52,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031265515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:24:52,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:24:52,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 23:24:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510460116] [2023-11-29 23:24:52,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:24:52,733 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 23:24:52,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:24:52,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 23:24:52,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 23:24:52,734 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2023-11-29 23:24:52,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 111 transitions, 693 flow. Second operand has 7 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:24:52,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2023-11-29 23:24:52,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:24:52,825 INFO L124 PetriNetUnfolderBase]: 51/228 cut-off events. [2023-11-29 23:24:52,825 INFO L125 PetriNetUnfolderBase]: For 338/405 co-relation queries the response was YES. [2023-11-29 23:24:52,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 228 events. 51/228 cut-off events. For 338/405 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 785 event pairs, 3 based on Foata normal form. 8/215 useless extension candidates. Maximal degree in co-relation 510. Up to 98 conditions per place. [2023-11-29 23:24:52,827 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 49 selfloop transitions, 13 changer transitions 14/115 dead transitions. [2023-11-29 23:24:52,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 115 transitions, 877 flow [2023-11-29 23:24:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 23:24:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 23:24:52,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 448 transitions. [2023-11-29 23:24:52,828 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 23:24:52,828 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 448 transitions. [2023-11-29 23:24:52,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 448 transitions. [2023-11-29 23:24:52,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:24:52,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 448 transitions. [2023-11-29 23:24:52,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 56.0) internal successors, (448), 8 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,831 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,832 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2023-11-29 23:24:52,832 INFO L500 AbstractCegarLoop]: Abstraction has has 101 places, 115 transitions, 877 flow [2023-11-29 23:24:52,832 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:52,832 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:24:52,833 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:24:52,833 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 23:24:52,833 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:24:52,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:24:52,833 INFO L85 PathProgramCache]: Analyzing trace with hash -175001361, now seen corresponding path program 1 times [2023-11-29 23:24:52,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:24:52,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38523760] [2023-11-29 23:24:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:52,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:24:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:53,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:24:53,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38523760] [2023-11-29 23:24:53,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38523760] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:24:53,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99918958] [2023-11-29 23:24:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:53,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:24:53,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:24:53,045 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:24:53,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 23:24:53,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:53,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 23:24:53,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:24:53,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:53,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:24:53,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:53,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99918958] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:24:53,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:24:53,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2023-11-29 23:24:53,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440810905] [2023-11-29 23:24:53,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:24:53,539 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 23:24:53,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:24:53,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 23:24:53,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-11-29 23:24:53,541 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:24:53,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 115 transitions, 877 flow. Second operand has 24 states, 24 states have (on average 49.916666666666664) internal successors, (1198), 24 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:53,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:24:53,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:24:53,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:24:55,240 INFO L124 PetriNetUnfolderBase]: 204/652 cut-off events. [2023-11-29 23:24:55,240 INFO L125 PetriNetUnfolderBase]: For 1469/1583 co-relation queries the response was YES. [2023-11-29 23:24:55,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 652 events. 204/652 cut-off events. For 1469/1583 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3707 event pairs, 5 based on Foata normal form. 20/615 useless extension candidates. Maximal degree in co-relation 2044. Up to 354 conditions per place. [2023-11-29 23:24:55,248 INFO L140 encePairwiseOnDemand]: 62/84 looper letters, 138 selfloop transitions, 157 changer transitions 28/360 dead transitions. [2023-11-29 23:24:55,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 360 transitions, 3706 flow [2023-11-29 23:24:55,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-11-29 23:24:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-11-29 23:24:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 3499 transitions. [2023-11-29 23:24:55,260 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6036922015182885 [2023-11-29 23:24:55,261 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 3499 transitions. [2023-11-29 23:24:55,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 3499 transitions. [2023-11-29 23:24:55,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:24:55,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 3499 transitions. [2023-11-29 23:24:55,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 50.710144927536234) internal successors, (3499), 69 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:55,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 84.0) internal successors, (5880), 70 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:55,281 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 84.0) internal successors, (5880), 70 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:55,283 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 95 predicate places. [2023-11-29 23:24:55,283 INFO L500 AbstractCegarLoop]: Abstraction has has 169 places, 360 transitions, 3706 flow [2023-11-29 23:24:55,284 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 49.916666666666664) internal successors, (1198), 24 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:55,284 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:24:55,284 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:24:55,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 23:24:55,489 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:24:55,490 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:24:55,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:24:55,490 INFO L85 PathProgramCache]: Analyzing trace with hash -244281901, now seen corresponding path program 2 times [2023-11-29 23:24:55,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:24:55,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887258778] [2023-11-29 23:24:55,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:55,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:24:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:55,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:55,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:24:55,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887258778] [2023-11-29 23:24:55,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887258778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:24:55,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14855624] [2023-11-29 23:24:55,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:24:55,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:24:55,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:24:55,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:24:55,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 23:24:55,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:24:55,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:24:55,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 23:24:55,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:24:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:55,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:24:56,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:56,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14855624] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:24:56,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:24:56,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2023-11-29 23:24:56,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542995103] [2023-11-29 23:24:56,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:24:56,084 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 23:24:56,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:24:56,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 23:24:56,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-29 23:24:56,086 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:24:56,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 360 transitions, 3706 flow. Second operand has 22 states, 22 states have (on average 49.18181818181818) internal successors, (1082), 22 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:56,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:24:56,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:24:56,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:24:56,493 INFO L124 PetriNetUnfolderBase]: 242/757 cut-off events. [2023-11-29 23:24:56,493 INFO L125 PetriNetUnfolderBase]: For 1993/2101 co-relation queries the response was YES. [2023-11-29 23:24:56,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 757 events. 242/757 cut-off events. For 1993/2101 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4516 event pairs, 3 based on Foata normal form. 10/704 useless extension candidates. Maximal degree in co-relation 3171. Up to 430 conditions per place. [2023-11-29 23:24:56,500 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 191 selfloop transitions, 181 changer transitions 45/454 dead transitions. [2023-11-29 23:24:56,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 454 transitions, 5587 flow [2023-11-29 23:24:56,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 23:24:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 23:24:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 964 transitions. [2023-11-29 23:24:56,503 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6040100250626567 [2023-11-29 23:24:56,503 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 964 transitions. [2023-11-29 23:24:56,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 964 transitions. [2023-11-29 23:24:56,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:24:56,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 964 transitions. [2023-11-29 23:24:56,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 50.73684210526316) internal successors, (964), 19 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:56,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 84.0) internal successors, (1680), 20 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:56,509 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 84.0) internal successors, (1680), 20 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:56,509 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 113 predicate places. [2023-11-29 23:24:56,509 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 454 transitions, 5587 flow [2023-11-29 23:24:56,510 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 49.18181818181818) internal successors, (1082), 22 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:56,510 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:24:56,510 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:24:56,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 23:24:56,716 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:24:56,717 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:24:56,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:24:56,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1735220909, now seen corresponding path program 3 times [2023-11-29 23:24:56,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:24:56,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121187112] [2023-11-29 23:24:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:56,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:24:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:56,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:24:56,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121187112] [2023-11-29 23:24:56,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121187112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:24:56,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547307594] [2023-11-29 23:24:56,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:24:56,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:24:56,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:24:56,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:24:56,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 23:24:56,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 23:24:56,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:24:56,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 23:24:56,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:24:57,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:57,162 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:24:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:57,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547307594] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:24:57,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:24:57,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2023-11-29 23:24:57,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291039502] [2023-11-29 23:24:57,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:24:57,271 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 23:24:57,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:24:57,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 23:24:57,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-11-29 23:24:57,273 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:24:57,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 454 transitions, 5587 flow. Second operand has 24 states, 24 states have (on average 49.916666666666664) internal successors, (1198), 24 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:57,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:24:57,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:24:57,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:24:58,682 INFO L124 PetriNetUnfolderBase]: 404/1239 cut-off events. [2023-11-29 23:24:58,683 INFO L125 PetriNetUnfolderBase]: For 4226/4507 co-relation queries the response was YES. [2023-11-29 23:24:58,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7313 conditions, 1239 events. 404/1239 cut-off events. For 4226/4507 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8847 event pairs, 2 based on Foata normal form. 47/1194 useless extension candidates. Maximal degree in co-relation 6125. Up to 726 conditions per place. [2023-11-29 23:24:58,692 INFO L140 encePairwiseOnDemand]: 62/84 looper letters, 230 selfloop transitions, 298 changer transitions 232/797 dead transitions. [2023-11-29 23:24:58,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 797 transitions, 11544 flow [2023-11-29 23:24:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 23:24:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-11-29 23:24:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2687 transitions. [2023-11-29 23:24:58,697 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6035489667565139 [2023-11-29 23:24:58,698 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2687 transitions. [2023-11-29 23:24:58,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2687 transitions. [2023-11-29 23:24:58,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:24:58,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2687 transitions. [2023-11-29 23:24:58,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 50.698113207547166) internal successors, (2687), 53 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:58,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 84.0) internal successors, (4536), 54 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:58,711 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 84.0) internal successors, (4536), 54 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:58,711 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 165 predicate places. [2023-11-29 23:24:58,711 INFO L500 AbstractCegarLoop]: Abstraction has has 239 places, 797 transitions, 11544 flow [2023-11-29 23:24:58,712 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 49.916666666666664) internal successors, (1198), 24 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:58,712 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:24:58,712 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:24:58,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 23:24:58,917 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:24:58,918 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:24:58,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:24:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1834282861, now seen corresponding path program 4 times [2023-11-29 23:24:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:24:58,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503788369] [2023-11-29 23:24:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:58,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:24:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:59,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:59,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:24:59,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503788369] [2023-11-29 23:24:59,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503788369] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:24:59,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:24:59,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 23:24:59,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794711456] [2023-11-29 23:24:59,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:24:59,082 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 23:24:59,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:24:59,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 23:24:59,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 23:24:59,084 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:24:59,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 797 transitions, 11544 flow. Second operand has 12 states, 12 states have (on average 49.5) internal successors, (594), 12 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:59,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:24:59,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:24:59,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:24:59,547 INFO L124 PetriNetUnfolderBase]: 422/1306 cut-off events. [2023-11-29 23:24:59,547 INFO L125 PetriNetUnfolderBase]: For 5254/5505 co-relation queries the response was YES. [2023-11-29 23:24:59,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8616 conditions, 1306 events. 422/1306 cut-off events. For 5254/5505 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9458 event pairs, 4 based on Foata normal form. 25/1233 useless extension candidates. Maximal degree in co-relation 6110. Up to 750 conditions per place. [2023-11-29 23:24:59,559 INFO L140 encePairwiseOnDemand]: 67/84 looper letters, 256 selfloop transitions, 312 changer transitions 241/846 dead transitions. [2023-11-29 23:24:59,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 846 transitions, 13760 flow [2023-11-29 23:24:59,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 23:24:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-29 23:24:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1163 transitions. [2023-11-29 23:24:59,561 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6019668737060041 [2023-11-29 23:24:59,561 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1163 transitions. [2023-11-29 23:24:59,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1163 transitions. [2023-11-29 23:24:59,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:24:59,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1163 transitions. [2023-11-29 23:24:59,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 50.56521739130435) internal successors, (1163), 23 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:59,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 84.0) internal successors, (2016), 24 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:59,566 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 84.0) internal successors, (2016), 24 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:59,568 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 187 predicate places. [2023-11-29 23:24:59,568 INFO L500 AbstractCegarLoop]: Abstraction has has 261 places, 846 transitions, 13760 flow [2023-11-29 23:24:59,569 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.5) internal successors, (594), 12 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:24:59,569 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:24:59,569 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:24:59,570 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 23:24:59,570 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:24:59,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:24:59,570 INFO L85 PathProgramCache]: Analyzing trace with hash -715921239, now seen corresponding path program 5 times [2023-11-29 23:24:59,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:24:59,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154099846] [2023-11-29 23:24:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:24:59,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:24:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:24:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:24:59,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154099846] [2023-11-29 23:24:59,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154099846] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:24:59,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225913701] [2023-11-29 23:24:59,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 23:24:59,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:24:59,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:24:59,772 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:24:59,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 23:24:59,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:24:59,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:24:59,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 23:24:59,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:24:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:24:59,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:25:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:00,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225913701] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:25:00,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:25:00,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2023-11-29 23:25:00,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975099657] [2023-11-29 23:25:00,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:25:00,108 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 23:25:00,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:25:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 23:25:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-29 23:25:00,111 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:25:00,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 846 transitions, 13760 flow. Second operand has 20 states, 20 states have (on average 49.35) internal successors, (987), 20 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:00,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:25:00,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:25:00,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:25:00,990 INFO L124 PetriNetUnfolderBase]: 594/1862 cut-off events. [2023-11-29 23:25:00,990 INFO L125 PetriNetUnfolderBase]: For 9178/9673 co-relation queries the response was YES. [2023-11-29 23:25:00,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13486 conditions, 1862 events. 594/1862 cut-off events. For 9178/9673 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14907 event pairs, 1 based on Foata normal form. 54/1773 useless extension candidates. Maximal degree in co-relation 10012. Up to 1052 conditions per place. [2023-11-29 23:25:01,008 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 207 selfloop transitions, 598 changer transitions 344/1186 dead transitions. [2023-11-29 23:25:01,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1186 transitions, 21582 flow [2023-11-29 23:25:01,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 23:25:01,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-29 23:25:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1573 transitions. [2023-11-29 23:25:01,013 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6040706605222734 [2023-11-29 23:25:01,013 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1573 transitions. [2023-11-29 23:25:01,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1573 transitions. [2023-11-29 23:25:01,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:25:01,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1573 transitions. [2023-11-29 23:25:01,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 50.74193548387097) internal successors, (1573), 31 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:01,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 84.0) internal successors, (2688), 32 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:01,020 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 84.0) internal successors, (2688), 32 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:01,020 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 217 predicate places. [2023-11-29 23:25:01,020 INFO L500 AbstractCegarLoop]: Abstraction has has 291 places, 1186 transitions, 21582 flow [2023-11-29 23:25:01,021 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 49.35) internal successors, (987), 20 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:01,021 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:25:01,021 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:25:01,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 23:25:01,226 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:01,227 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:25:01,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:25:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1847849327, now seen corresponding path program 6 times [2023-11-29 23:25:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:25:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244017704] [2023-11-29 23:25:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:25:01,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:25:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:25:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:01,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:25:01,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244017704] [2023-11-29 23:25:01,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244017704] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:25:01,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991975437] [2023-11-29 23:25:01,406 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 23:25:01,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:01,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:25:01,408 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:25:01,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 23:25:01,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 23:25:01,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:25:01,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 23:25:01,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:25:01,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:01,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:25:01,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:25:01,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991975437] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:25:01,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:25:01,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2023-11-29 23:25:01,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814688417] [2023-11-29 23:25:01,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:25:01,848 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 23:25:01,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:25:01,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 23:25:01,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-11-29 23:25:01,850 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:25:01,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1186 transitions, 21582 flow. Second operand has 24 states, 24 states have (on average 49.875) internal successors, (1197), 24 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:01,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:25:01,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:25:01,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:25:03,665 INFO L124 PetriNetUnfolderBase]: 1035/3231 cut-off events. [2023-11-29 23:25:03,665 INFO L125 PetriNetUnfolderBase]: For 17614/18369 co-relation queries the response was YES. [2023-11-29 23:25:03,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25711 conditions, 3231 events. 1035/3231 cut-off events. For 17614/18369 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 28967 event pairs, 3 based on Foata normal form. 65/3046 useless extension candidates. Maximal degree in co-relation 22828. Up to 1815 conditions per place. [2023-11-29 23:25:03,711 INFO L140 encePairwiseOnDemand]: 61/84 looper letters, 513 selfloop transitions, 954 changer transitions 565/2069 dead transitions. [2023-11-29 23:25:03,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 2069 transitions, 41688 flow [2023-11-29 23:25:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-11-29 23:25:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-11-29 23:25:03,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 2901 transitions. [2023-11-29 23:25:03,723 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6058897243107769 [2023-11-29 23:25:03,723 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 2901 transitions. [2023-11-29 23:25:03,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 2901 transitions. [2023-11-29 23:25:03,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:25:03,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 2901 transitions. [2023-11-29 23:25:03,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 50.89473684210526) internal successors, (2901), 57 states have internal predecessors, (2901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:03,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 84.0) internal successors, (4872), 58 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:03,829 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 84.0) internal successors, (4872), 58 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:03,830 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 273 predicate places. [2023-11-29 23:25:03,830 INFO L500 AbstractCegarLoop]: Abstraction has has 347 places, 2069 transitions, 41688 flow [2023-11-29 23:25:03,830 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 49.875) internal successors, (1197), 24 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:03,830 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:25:03,831 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:25:03,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 23:25:04,037 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:04,037 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:25:04,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:25:04,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1583099591, now seen corresponding path program 7 times [2023-11-29 23:25:04,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:25:04,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157103511] [2023-11-29 23:25:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:25:04,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:25:04,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:25:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:04,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:25:04,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157103511] [2023-11-29 23:25:04,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157103511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:25:04,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075299053] [2023-11-29 23:25:04,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 23:25:04,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:04,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:25:04,214 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:25:04,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 23:25:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:25:04,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 23:25:04,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:25:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:04,543 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 23:25:04,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075299053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:25:04,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 23:25:04,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 19 [2023-11-29 23:25:04,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9292639] [2023-11-29 23:25:04,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:25:04,544 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 23:25:04,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:25:04,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 23:25:04,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-29 23:25:04,549 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:25:04,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 2069 transitions, 41688 flow. Second operand has 11 states, 11 states have (on average 49.72727272727273) internal successors, (547), 11 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:04,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:25:04,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:25:04,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:25:06,092 INFO L124 PetriNetUnfolderBase]: 1125/3491 cut-off events. [2023-11-29 23:25:06,092 INFO L125 PetriNetUnfolderBase]: For 22395/23298 co-relation queries the response was YES. [2023-11-29 23:25:06,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30502 conditions, 3491 events. 1125/3491 cut-off events. For 22395/23298 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 31876 event pairs, 1 based on Foata normal form. 38/3259 useless extension candidates. Maximal degree in co-relation 21870. Up to 2389 conditions per place. [2023-11-29 23:25:06,129 INFO L140 encePairwiseOnDemand]: 66/84 looper letters, 1477 selfloop transitions, 114 changer transitions 616/2244 dead transitions. [2023-11-29 23:25:06,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 2244 transitions, 49696 flow [2023-11-29 23:25:06,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 23:25:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-29 23:25:06,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1132 transitions. [2023-11-29 23:25:06,132 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6125541125541125 [2023-11-29 23:25:06,132 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1132 transitions. [2023-11-29 23:25:06,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1132 transitions. [2023-11-29 23:25:06,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:25:06,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1132 transitions. [2023-11-29 23:25:06,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 51.45454545454545) internal successors, (1132), 22 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:06,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 84.0) internal successors, (1932), 23 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:06,137 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 84.0) internal successors, (1932), 23 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:06,137 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 294 predicate places. [2023-11-29 23:25:06,137 INFO L500 AbstractCegarLoop]: Abstraction has has 368 places, 2244 transitions, 49696 flow [2023-11-29 23:25:06,138 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 49.72727272727273) internal successors, (547), 11 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:06,138 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:25:06,138 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:25:06,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 23:25:06,343 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:06,343 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:25:06,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:25:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1849714691, now seen corresponding path program 8 times [2023-11-29 23:25:06,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:25:06,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78481949] [2023-11-29 23:25:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:25:06,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:25:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:25:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:06,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:25:06,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78481949] [2023-11-29 23:25:06,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78481949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:25:06,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683017191] [2023-11-29 23:25:06,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:25:06,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:06,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:25:06,521 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:25:06,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 23:25:06,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:25:06,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:25:06,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 23:25:06,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:25:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:06,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:25:06,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:25:06,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683017191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:25:06,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:25:06,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2023-11-29 23:25:06,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435772842] [2023-11-29 23:25:06,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:25:06,952 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 23:25:06,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:25:06,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 23:25:06,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-11-29 23:25:06,955 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:25:06,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 2244 transitions, 49696 flow. Second operand has 24 states, 24 states have (on average 49.875) internal successors, (1197), 24 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:06,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:25:06,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:25:06,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:25:09,604 INFO L124 PetriNetUnfolderBase]: 1453/4348 cut-off events. [2023-11-29 23:25:09,605 INFO L125 PetriNetUnfolderBase]: For 28381/29606 co-relation queries the response was YES. [2023-11-29 23:25:09,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42059 conditions, 4348 events. 1453/4348 cut-off events. For 28381/29606 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 40786 event pairs, 1 based on Foata normal form. 51/4077 useless extension candidates. Maximal degree in co-relation 31691. Up to 3095 conditions per place. [2023-11-29 23:25:09,647 INFO L140 encePairwiseOnDemand]: 61/84 looper letters, 1220 selfloop transitions, 990 changer transitions 699/2946 dead transitions. [2023-11-29 23:25:09,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 2946 transitions, 70755 flow [2023-11-29 23:25:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-29 23:25:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-11-29 23:25:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3336 transitions. [2023-11-29 23:25:09,652 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6017316017316018 [2023-11-29 23:25:09,652 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 3336 transitions. [2023-11-29 23:25:09,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 3336 transitions. [2023-11-29 23:25:09,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:25:09,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 3336 transitions. [2023-11-29 23:25:09,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 50.54545454545455) internal successors, (3336), 66 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:09,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 84.0) internal successors, (5628), 67 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:09,666 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 84.0) internal successors, (5628), 67 states have internal predecessors, (5628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:09,667 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 359 predicate places. [2023-11-29 23:25:09,667 INFO L500 AbstractCegarLoop]: Abstraction has has 433 places, 2946 transitions, 70755 flow [2023-11-29 23:25:09,667 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 49.875) internal successors, (1197), 24 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:09,667 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:25:09,667 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:25:09,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 23:25:09,872 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 23:25:09,872 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:25:09,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:25:09,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1254726589, now seen corresponding path program 9 times [2023-11-29 23:25:09,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:25:09,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925562093] [2023-11-29 23:25:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:25:09,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:25:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:25:10,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:10,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:25:10,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925562093] [2023-11-29 23:25:10,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925562093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:25:10,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248324108] [2023-11-29 23:25:10,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:25:10,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:10,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:25:10,026 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:25:10,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 23:25:10,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 23:25:10,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:25:10,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 23:25:10,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:25:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:10,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 23:25:10,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248324108] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:25:10,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 23:25:10,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 19 [2023-11-29 23:25:10,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133997861] [2023-11-29 23:25:10,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:25:10,295 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 23:25:10,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:25:10,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 23:25:10,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-29 23:25:10,296 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:25:10,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 2946 transitions, 70755 flow. Second operand has 11 states, 11 states have (on average 49.72727272727273) internal successors, (547), 11 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:10,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:25:10,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:25:10,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:25:13,031 INFO L124 PetriNetUnfolderBase]: 1751/5330 cut-off events. [2023-11-29 23:25:13,031 INFO L125 PetriNetUnfolderBase]: For 41267/43014 co-relation queries the response was YES. [2023-11-29 23:25:13,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55598 conditions, 5330 events. 1751/5330 cut-off events. For 41267/43014 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 52980 event pairs, 3 based on Foata normal form. 38/4952 useless extension candidates. Maximal degree in co-relation 49964. Up to 3812 conditions per place. [2023-11-29 23:25:13,086 INFO L140 encePairwiseOnDemand]: 66/84 looper letters, 2382 selfloop transitions, 264 changer transitions 853/3536 dead transitions. [2023-11-29 23:25:13,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 3536 transitions, 92596 flow [2023-11-29 23:25:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 23:25:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 23:25:13,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1094 transitions. [2023-11-29 23:25:13,088 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6201814058956916 [2023-11-29 23:25:13,088 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1094 transitions. [2023-11-29 23:25:13,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1094 transitions. [2023-11-29 23:25:13,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:25:13,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1094 transitions. [2023-11-29 23:25:13,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 52.095238095238095) internal successors, (1094), 21 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:13,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 84.0) internal successors, (1848), 22 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:13,093 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 84.0) internal successors, (1848), 22 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:13,093 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 379 predicate places. [2023-11-29 23:25:13,093 INFO L500 AbstractCegarLoop]: Abstraction has has 453 places, 3536 transitions, 92596 flow [2023-11-29 23:25:13,094 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 49.72727272727273) internal successors, (547), 11 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:13,094 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:25:13,094 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:25:13,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 23:25:13,298 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 23:25:13,298 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:25:13,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:25:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1132011332, now seen corresponding path program 10 times [2023-11-29 23:25:13,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:25:13,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205774926] [2023-11-29 23:25:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:25:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:25:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:25:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:25:13,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:25:13,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205774926] [2023-11-29 23:25:13,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205774926] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:25:13,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317040389] [2023-11-29 23:25:13,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 23:25:13,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:13,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:25:13,437 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:25:13,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 23:25:13,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 23:25:13,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:25:13,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 23:25:13,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:25:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:13,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:25:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:13,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317040389] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:25:13,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:25:13,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2023-11-29 23:25:13,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351890133] [2023-11-29 23:25:13,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:25:13,853 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 23:25:13,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:25:13,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 23:25:13,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2023-11-29 23:25:13,854 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:25:13,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 3536 transitions, 92596 flow. Second operand has 26 states, 26 states have (on average 50.07692307692308) internal successors, (1302), 26 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) [2023-11-29 23:25:13,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:25:13,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:25:13,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:25:20,554 INFO L124 PetriNetUnfolderBase]: 2504/7240 cut-off events. [2023-11-29 23:25:20,554 INFO L125 PetriNetUnfolderBase]: For 63997/67597 co-relation queries the response was YES. [2023-11-29 23:25:20,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83015 conditions, 7240 events. 2504/7240 cut-off events. For 63997/67597 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 74533 event pairs, 4 based on Foata normal form. 219/6928 useless extension candidates. Maximal degree in co-relation 76299. Up to 5404 conditions per place. [2023-11-29 23:25:20,639 INFO L140 encePairwiseOnDemand]: 60/84 looper letters, 405 selfloop transitions, 3345 changer transitions 1388/5175 dead transitions. [2023-11-29 23:25:20,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 5175 transitions, 146687 flow [2023-11-29 23:25:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-11-29 23:25:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2023-11-29 23:25:20,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 5755 transitions. [2023-11-29 23:25:20,645 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5957556935817805 [2023-11-29 23:25:20,645 INFO L72 ComplementDD]: Start complementDD. Operand 115 states and 5755 transitions. [2023-11-29 23:25:20,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 5755 transitions. [2023-11-29 23:25:20,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:25:20,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 115 states and 5755 transitions. [2023-11-29 23:25:20,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 116 states, 115 states have (on average 50.04347826086956) internal successors, (5755), 115 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:20,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 116 states, 116 states have (on average 84.0) internal successors, (9744), 116 states have internal predecessors, (9744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:20,668 INFO L81 ComplementDD]: Finished complementDD. Result has 116 states, 116 states have (on average 84.0) internal successors, (9744), 116 states have internal predecessors, (9744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:20,669 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 493 predicate places. [2023-11-29 23:25:20,669 INFO L500 AbstractCegarLoop]: Abstraction has has 567 places, 5175 transitions, 146687 flow [2023-11-29 23:25:20,669 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 50.07692307692308) internal successors, (1302), 26 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) [2023-11-29 23:25:20,669 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:25:20,670 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:25:20,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 23:25:20,874 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 23:25:20,875 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:25:20,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:25:20,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1172580628, now seen corresponding path program 11 times [2023-11-29 23:25:20,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:25:20,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019652892] [2023-11-29 23:25:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:25:20,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:25:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:25:21,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:21,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:25:21,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019652892] [2023-11-29 23:25:21,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019652892] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:25:21,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486264738] [2023-11-29 23:25:21,001 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 23:25:21,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:21,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:25:21,004 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:25:21,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 23:25:21,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-29 23:25:21,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:25:21,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 23:25:21,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:25:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:21,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:25:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:21,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486264738] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:25:21,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:25:21,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-11-29 23:25:21,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768666040] [2023-11-29 23:25:21,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:25:21,344 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 23:25:21,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:25:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 23:25:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-11-29 23:25:21,345 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:25:21,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 5175 transitions, 146687 flow. Second operand has 23 states, 23 states have (on average 49.65217391304348) internal successors, (1142), 23 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:21,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:25:21,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:25:21,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:25:29,488 INFO L124 PetriNetUnfolderBase]: 3177/8888 cut-off events. [2023-11-29 23:25:29,488 INFO L125 PetriNetUnfolderBase]: For 81827/85425 co-relation queries the response was YES. [2023-11-29 23:25:29,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109359 conditions, 8888 events. 3177/8888 cut-off events. For 81827/85425 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 92964 event pairs, 2 based on Foata normal form. 124/8358 useless extension candidates. Maximal degree in co-relation 84620. Up to 6750 conditions per place. [2023-11-29 23:25:29,598 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 2954 selfloop transitions, 1867 changer transitions 1626/6484 dead transitions. [2023-11-29 23:25:29,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 6484 transitions, 196449 flow [2023-11-29 23:25:29,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 23:25:29,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-11-29 23:25:29,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2694 transitions. [2023-11-29 23:25:29,603 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.605121293800539 [2023-11-29 23:25:29,603 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2694 transitions. [2023-11-29 23:25:29,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2694 transitions. [2023-11-29 23:25:29,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:25:29,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2694 transitions. [2023-11-29 23:25:29,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 50.83018867924528) internal successors, (2694), 53 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:29,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 84.0) internal successors, (4536), 54 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:29,613 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 84.0) internal successors, (4536), 54 states have internal predecessors, (4536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:29,614 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 544 predicate places. [2023-11-29 23:25:29,614 INFO L500 AbstractCegarLoop]: Abstraction has has 618 places, 6484 transitions, 196449 flow [2023-11-29 23:25:29,614 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.65217391304348) internal successors, (1142), 23 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:29,614 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:25:29,615 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:25:29,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 23:25:29,820 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 23:25:29,820 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:25:29,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:25:29,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1895029122, now seen corresponding path program 12 times [2023-11-29 23:25:29,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:25:29,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042294090] [2023-11-29 23:25:29,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:25:29,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:25:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:25:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:29,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:25:29,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042294090] [2023-11-29 23:25:29,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042294090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:25:29,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999851559] [2023-11-29 23:25:29,996 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 23:25:29,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:29,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:25:29,997 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:25:30,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 23:25:30,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 23:25:30,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:25:30,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 23:25:30,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:25:30,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:30,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:25:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:30,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999851559] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:25:30,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:25:30,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2023-11-29 23:25:30,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765818860] [2023-11-29 23:25:30,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:25:30,428 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 23:25:30,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:25:30,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 23:25:30,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2023-11-29 23:25:30,430 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:25:30,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 6484 transitions, 196449 flow. Second operand has 25 states, 25 states have (on average 50.08) internal successors, (1252), 25 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:30,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:25:30,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:25:30,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:25:49,328 INFO L124 PetriNetUnfolderBase]: 4936/14153 cut-off events. [2023-11-29 23:25:49,329 INFO L125 PetriNetUnfolderBase]: For 156760/163606 co-relation queries the response was YES. [2023-11-29 23:25:49,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185051 conditions, 14153 events. 4936/14153 cut-off events. For 156760/163606 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 162152 event pairs, 6 based on Foata normal form. 553/13662 useless extension candidates. Maximal degree in co-relation 137963. Up to 10673 conditions per place. [2023-11-29 23:25:49,474 INFO L140 encePairwiseOnDemand]: 60/84 looper letters, 1905 selfloop transitions, 5477 changer transitions 2816/10235 dead transitions. [2023-11-29 23:25:49,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 10235 transitions, 332030 flow [2023-11-29 23:25:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-29 23:25:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-11-29 23:25:49,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 6056 transitions. [2023-11-29 23:25:49,480 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6007936507936508 [2023-11-29 23:25:49,480 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 6056 transitions. [2023-11-29 23:25:49,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 6056 transitions. [2023-11-29 23:25:49,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:25:49,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 6056 transitions. [2023-11-29 23:25:49,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 50.46666666666667) internal successors, (6056), 120 states have internal predecessors, (6056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:49,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 84.0) internal successors, (10164), 121 states have internal predecessors, (10164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:49,502 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 84.0) internal successors, (10164), 121 states have internal predecessors, (10164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:49,503 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 663 predicate places. [2023-11-29 23:25:49,503 INFO L500 AbstractCegarLoop]: Abstraction has has 737 places, 10235 transitions, 332030 flow [2023-11-29 23:25:49,503 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 50.08) internal successors, (1252), 25 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:49,503 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:25:49,503 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:25:49,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 23:25:49,708 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 23:25:49,708 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:25:49,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:25:49,709 INFO L85 PathProgramCache]: Analyzing trace with hash 51200648, now seen corresponding path program 13 times [2023-11-29 23:25:49,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:25:49,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652095185] [2023-11-29 23:25:49,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:25:49,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:25:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:25:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:49,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:25:49,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652095185] [2023-11-29 23:25:49,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652095185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:25:49,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455304673] [2023-11-29 23:25:49,837 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 23:25:49,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:25:49,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:25:49,840 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) [2023-11-29 23:25:49,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 23:25:49,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:25:49,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 23:25:49,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:25:50,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:50,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:25:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:25:50,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455304673] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:25:50,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:25:50,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-11-29 23:25:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053843387] [2023-11-29 23:25:50,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:25:50,180 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 23:25:50,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:25:50,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 23:25:50,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-11-29 23:25:50,181 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:25:50,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 10235 transitions, 332030 flow. Second operand has 23 states, 23 states have (on average 49.73913043478261) internal successors, (1144), 23 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:25:50,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:25:50,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:25:50,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:26:25,380 INFO L124 PetriNetUnfolderBase]: 5574/16009 cut-off events. [2023-11-29 23:26:25,380 INFO L125 PetriNetUnfolderBase]: For 203114/210775 co-relation queries the response was YES. [2023-11-29 23:26:25,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221064 conditions, 16009 events. 5574/16009 cut-off events. For 203114/210775 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 187343 event pairs, 8 based on Foata normal form. 275/15068 useless extension candidates. Maximal degree in co-relation 164678. Up to 12003 conditions per place. [2023-11-29 23:26:25,536 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 4956 selfloop transitions, 3308 changer transitions 3147/11448 dead transitions. [2023-11-29 23:26:25,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 11448 transitions, 395605 flow [2023-11-29 23:26:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 23:26:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-29 23:26:25,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2038 transitions. [2023-11-29 23:26:25,538 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.606547619047619 [2023-11-29 23:26:25,538 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2038 transitions. [2023-11-29 23:26:25,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2038 transitions. [2023-11-29 23:26:25,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:26:25,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2038 transitions. [2023-11-29 23:26:25,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 50.95) internal successors, (2038), 40 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:26:25,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 84.0) internal successors, (3444), 41 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:26:25,545 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 84.0) internal successors, (3444), 41 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:26:25,545 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 702 predicate places. [2023-11-29 23:26:25,545 INFO L500 AbstractCegarLoop]: Abstraction has has 776 places, 11448 transitions, 395605 flow [2023-11-29 23:26:25,546 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.73913043478261) internal successors, (1144), 23 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:26:25,546 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:26:25,546 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:26:25,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 23:26:25,751 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,SelfDestructingSolverStorable16 [2023-11-29 23:26:25,751 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:26:25,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:26:25,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1033471574, now seen corresponding path program 14 times [2023-11-29 23:26:25,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:26:25,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015216779] [2023-11-29 23:26:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:26:25,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:26:25,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:26:25,864 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:26:25,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:26:25,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015216779] [2023-11-29 23:26:25,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015216779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:26:25,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698669284] [2023-11-29 23:26:25,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:26:25,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:26:25,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:26:25,868 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:26:25,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 23:26:25,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:26:25,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:26:25,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 23:26:25,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:26:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:26:26,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:26:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:26:26,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698669284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:26:26,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:26:26,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2023-11-29 23:26:26,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318836439] [2023-11-29 23:26:26,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:26:26,235 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 23:26:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:26:26,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 23:26:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-11-29 23:26:26,236 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:26:26,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 776 places, 11448 transitions, 395605 flow. Second operand has 21 states, 21 states have (on average 49.80952380952381) internal successors, (1046), 21 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:26:26,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:26:26,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:26:26,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:27:09,312 INFO L124 PetriNetUnfolderBase]: 5892/16706 cut-off events. [2023-11-29 23:27:09,312 INFO L125 PetriNetUnfolderBase]: For 224796/233154 co-relation queries the response was YES. [2023-11-29 23:27:09,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245481 conditions, 16706 events. 5892/16706 cut-off events. For 224796/233154 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 195398 event pairs, 6 based on Foata normal form. 244/15698 useless extension candidates. Maximal degree in co-relation 228031. Up to 12638 conditions per place. [2023-11-29 23:27:09,470 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 6688 selfloop transitions, 2161 changer transitions 3198/12084 dead transitions. [2023-11-29 23:27:09,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 12084 transitions, 441763 flow [2023-11-29 23:27:09,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 23:27:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-29 23:27:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1689 transitions. [2023-11-29 23:27:09,472 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6093073593073594 [2023-11-29 23:27:09,472 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1689 transitions. [2023-11-29 23:27:09,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1689 transitions. [2023-11-29 23:27:09,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:27:09,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1689 transitions. [2023-11-29 23:27:09,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 51.18181818181818) internal successors, (1689), 33 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:27:09,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 84.0) internal successors, (2856), 34 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:27:09,477 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 84.0) internal successors, (2856), 34 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:27:09,478 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 734 predicate places. [2023-11-29 23:27:09,478 INFO L500 AbstractCegarLoop]: Abstraction has has 808 places, 12084 transitions, 441763 flow [2023-11-29 23:27:09,478 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 49.80952380952381) internal successors, (1046), 21 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:27:09,478 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:27:09,478 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:27:09,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 23:27:09,683 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:27:09,683 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:27:09,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:27:09,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1759384088, now seen corresponding path program 15 times [2023-11-29 23:27:09,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:27:09,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515841117] [2023-11-29 23:27:09,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:27:09,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:27:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:27:09,942 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:27:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:27:09,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515841117] [2023-11-29 23:27:09,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515841117] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:27:09,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975015056] [2023-11-29 23:27:09,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:27:09,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:27:09,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:27:09,944 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:27:09,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 23:27:10,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 23:27:10,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:27:10,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 23:27:10,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:27:10,186 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:27:10,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:27:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:27:10,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975015056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:27:10,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:27:10,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-11-29 23:27:10,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429399753] [2023-11-29 23:27:10,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:27:10,338 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 23:27:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:27:10,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 23:27:10,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-11-29 23:27:10,340 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:27:10,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 12084 transitions, 441763 flow. Second operand has 23 states, 23 states have (on average 49.69565217391305) internal successors, (1143), 23 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:27:10,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:27:10,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:27:10,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:28:05,012 INFO L124 PetriNetUnfolderBase]: 6969/20728 cut-off events. [2023-11-29 23:28:05,012 INFO L125 PetriNetUnfolderBase]: For 337120/349939 co-relation queries the response was YES. [2023-11-29 23:28:05,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313763 conditions, 20728 events. 6969/20728 cut-off events. For 337120/349939 co-relation queries the response was YES. Maximal size of possible extension queue 1420. Compared 256986 event pairs, 13 based on Foata normal form. 536/19705 useless extension candidates. Maximal degree in co-relation 286953. Up to 15193 conditions per place. [2023-11-29 23:28:05,214 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 4738 selfloop transitions, 5764 changer transitions 3947/14486 dead transitions. [2023-11-29 23:28:05,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 851 places, 14486 transitions, 560504 flow [2023-11-29 23:28:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 23:28:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-29 23:28:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2261 transitions. [2023-11-29 23:28:05,216 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6117424242424242 [2023-11-29 23:28:05,216 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2261 transitions. [2023-11-29 23:28:05,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2261 transitions. [2023-11-29 23:28:05,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:28:05,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2261 transitions. [2023-11-29 23:28:05,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 51.38636363636363) internal successors, (2261), 44 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:28:05,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 84.0) internal successors, (3780), 45 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:28:05,222 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 84.0) internal successors, (3780), 45 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:28:05,222 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 777 predicate places. [2023-11-29 23:28:05,222 INFO L500 AbstractCegarLoop]: Abstraction has has 851 places, 14486 transitions, 560504 flow [2023-11-29 23:28:05,223 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.69565217391305) internal successors, (1143), 23 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:28:05,223 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:28:05,223 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:28:05,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 23:28:05,428 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:28:05,428 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:28:05,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:28:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1501945944, now seen corresponding path program 16 times [2023-11-29 23:28:05,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:28:05,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605437019] [2023-11-29 23:28:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:28:05,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:28:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:28:05,588 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:28:05,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:28:05,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605437019] [2023-11-29 23:28:05,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605437019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:28:05,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452855508] [2023-11-29 23:28:05,588 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 23:28:05,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:28:05,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:28:05,590 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:28:05,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 23:28:05,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 23:28:05,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:28:05,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 23:28:05,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:28:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:28:05,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:28:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:28:06,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452855508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:28:06,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:28:06,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2023-11-29 23:28:06,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453392891] [2023-11-29 23:28:06,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:28:06,021 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 23:28:06,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:28:06,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 23:28:06,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2023-11-29 23:28:06,023 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:28:06,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 851 places, 14486 transitions, 560504 flow. Second operand has 25 states, 25 states have (on average 50.08) internal successors, (1252), 25 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:28:06,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:28:06,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:28:06,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:29:57,490 INFO L124 PetriNetUnfolderBase]: 9723/29158 cut-off events. [2023-11-29 23:29:57,490 INFO L125 PetriNetUnfolderBase]: For 531091/549520 co-relation queries the response was YES. [2023-11-29 23:29:57,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462981 conditions, 29158 events. 9723/29158 cut-off events. For 531091/549520 co-relation queries the response was YES. Maximal size of possible extension queue 1986. Compared 381301 event pairs, 1 based on Foata normal form. 360/27320 useless extension candidates. Maximal degree in co-relation 341001. Up to 21299 conditions per place. [2023-11-29 23:29:57,804 INFO L140 encePairwiseOnDemand]: 61/84 looper letters, 7171 selfloop transitions, 7655 changer transitions 5510/20373 dead transitions. [2023-11-29 23:29:57,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 910 places, 20373 transitions, 830599 flow [2023-11-29 23:29:57,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-29 23:29:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-29 23:29:57,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3034 transitions. [2023-11-29 23:29:57,806 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.601984126984127 [2023-11-29 23:29:57,806 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 3034 transitions. [2023-11-29 23:29:57,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 3034 transitions. [2023-11-29 23:29:57,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:29:57,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 3034 transitions. [2023-11-29 23:29:57,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 50.56666666666667) internal successors, (3034), 60 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:29:57,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 84.0) internal successors, (5124), 61 states have internal predecessors, (5124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:29:57,814 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 84.0) internal successors, (5124), 61 states have internal predecessors, (5124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:29:57,815 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 836 predicate places. [2023-11-29 23:29:57,815 INFO L500 AbstractCegarLoop]: Abstraction has has 910 places, 20373 transitions, 830599 flow [2023-11-29 23:29:57,815 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 50.08) internal successors, (1252), 25 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:29:57,815 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:29:57,815 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:29:57,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 23:29:58,023 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:29:58,023 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:29:58,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:29:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash 67386360, now seen corresponding path program 17 times [2023-11-29 23:29:58,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:29:58,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717732696] [2023-11-29 23:29:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:29:58,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:29:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:29:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:29:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:29:58,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717732696] [2023-11-29 23:29:58,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717732696] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:29:58,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386262773] [2023-11-29 23:29:58,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 23:29:58,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:29:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:29:58,132 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:29:58,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 23:29:58,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 23:29:58,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:29:58,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 23:29:58,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:29:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:29:58,350 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:29:58,501 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:29:58,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386262773] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:29:58,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:29:58,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2023-11-29 23:29:58,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304246675] [2023-11-29 23:29:58,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:29:58,502 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 23:29:58,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:29:58,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 23:29:58,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-29 23:29:58,503 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:29:58,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 20373 transitions, 830599 flow. Second operand has 19 states, 19 states have (on average 49.94736842105263) internal successors, (949), 19 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:29:58,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:29:58,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:29:58,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:33:00,324 INFO L124 PetriNetUnfolderBase]: 9886/29494 cut-off events. [2023-11-29 23:33:00,325 INFO L125 PetriNetUnfolderBase]: For 577679/597059 co-relation queries the response was YES. [2023-11-29 23:33:00,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492278 conditions, 29494 events. 9886/29494 cut-off events. For 577679/597059 co-relation queries the response was YES. Maximal size of possible extension queue 2007. Compared 385065 event pairs, 1 based on Foata normal form. 334/27615 useless extension candidates. Maximal degree in co-relation 364580. Up to 21613 conditions per place. [2023-11-29 23:33:00,692 INFO L140 encePairwiseOnDemand]: 66/84 looper letters, 11773 selfloop transitions, 3346 changer transitions 5530/20686 dead transitions. [2023-11-29 23:33:00,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 928 places, 20686 transitions, 884945 flow [2023-11-29 23:33:00,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 23:33:00,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-29 23:33:00,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 980 transitions. [2023-11-29 23:33:00,693 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2023-11-29 23:33:00,693 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 980 transitions. [2023-11-29 23:33:00,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 980 transitions. [2023-11-29 23:33:00,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:33:00,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 980 transitions. [2023-11-29 23:33:00,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 51.578947368421055) internal successors, (980), 19 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:33:00,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 84.0) internal successors, (1680), 20 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:33:00,697 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 84.0) internal successors, (1680), 20 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:33:00,698 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 854 predicate places. [2023-11-29 23:33:00,698 INFO L500 AbstractCegarLoop]: Abstraction has has 928 places, 20686 transitions, 884945 flow [2023-11-29 23:33:00,698 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 49.94736842105263) internal successors, (949), 19 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:33:00,698 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:33:00,698 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:33:00,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 23:33:00,906 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:33:00,906 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:33:00,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:33:00,907 INFO L85 PathProgramCache]: Analyzing trace with hash -560743122, now seen corresponding path program 18 times [2023-11-29 23:33:00,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:33:00,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652348612] [2023-11-29 23:33:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:33:00,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:33:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:33:01,028 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:33:01,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:33:01,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652348612] [2023-11-29 23:33:01,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652348612] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:33:01,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175676812] [2023-11-29 23:33:01,029 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 23:33:01,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:33:01,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:33:01,032 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:33:01,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 23:33:01,116 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 23:33:01,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:33:01,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 23:33:01,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:33:01,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:33:01,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:33:01,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:33:01,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175676812] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:33:01,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:33:01,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-11-29 23:33:01,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666503335] [2023-11-29 23:33:01,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:33:01,410 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 23:33:01,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:33:01,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 23:33:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-11-29 23:33:01,412 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:33:01,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 928 places, 20686 transitions, 884945 flow. Second operand has 23 states, 23 states have (on average 49.608695652173914) internal successors, (1141), 23 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:33:01,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:33:01,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:33:01,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:36:37,265 INFO L124 PetriNetUnfolderBase]: 10725/32932 cut-off events. [2023-11-29 23:36:37,266 INFO L125 PetriNetUnfolderBase]: For 698374/720660 co-relation queries the response was YES. [2023-11-29 23:36:37,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577464 conditions, 32932 events. 10725/32932 cut-off events. For 698374/720660 co-relation queries the response was YES. Maximal size of possible extension queue 2078. Compared 438075 event pairs, 0 based on Foata normal form. 471/30888 useless extension candidates. Maximal degree in co-relation 425831. Up to 24246 conditions per place. [2023-11-29 23:36:37,831 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 11230 selfloop transitions, 6124 changer transitions 5980/23371 dead transitions. [2023-11-29 23:36:37,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1004 places, 23371 transitions, 1047909 flow [2023-11-29 23:36:37,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-11-29 23:36:37,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-11-29 23:36:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 3930 transitions. [2023-11-29 23:36:37,834 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6076066790352505 [2023-11-29 23:36:37,835 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 3930 transitions. [2023-11-29 23:36:37,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 3930 transitions. [2023-11-29 23:36:37,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:36:37,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 3930 transitions. [2023-11-29 23:36:37,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 51.03896103896104) internal successors, (3930), 77 states have internal predecessors, (3930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:37,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 84.0) internal successors, (6552), 78 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:37,844 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 84.0) internal successors, (6552), 78 states have internal predecessors, (6552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:37,844 INFO L307 CegarLoopForPetriNet]: 74 programPoint places, 930 predicate places. [2023-11-29 23:36:37,845 INFO L500 AbstractCegarLoop]: Abstraction has has 1004 places, 23371 transitions, 1047909 flow [2023-11-29 23:36:37,845 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.608695652173914) internal successors, (1141), 23 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:37,845 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:36:37,845 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:36:37,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 23:36:38,050 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:36:38,050 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:36:38,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:36:38,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1428426570, now seen corresponding path program 19 times [2023-11-29 23:36:38,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:36:38,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089518586] [2023-11-29 23:36:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:36:38,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:36:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:38,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:36:38,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:36:38,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089518586] [2023-11-29 23:36:38,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089518586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:36:38,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097986603] [2023-11-29 23:36:38,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 23:36:38,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:36:38,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:36:38,152 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:36:38,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 23:36:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:36:38,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 23:36:38,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:36:38,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:36:38,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:36:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:36:38,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097986603] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:36:38,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:36:38,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-11-29 23:36:38,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649265867] [2023-11-29 23:36:38,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:36:38,514 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 23:36:38,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:36:38,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 23:36:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=422, Unknown=0, NotChecked=0, Total=506 [2023-11-29 23:36:38,515 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-11-29 23:36:38,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1004 places, 23371 transitions, 1047909 flow. Second operand has 23 states, 23 states have (on average 49.69565217391305) internal successors, (1143), 23 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:36:38,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:36:38,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-11-29 23:36:38,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 23:38:48,085 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:38:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 23:38:48,085 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:38:48,087 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 23:38:48,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-29 23:38:48,287 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:38:48,287 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (23states, 47/84 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 296491 conditions, 14893 events (5528/14892 cut-off events. For 283886/297129 co-relation queries the response was YES. Maximal size of possible extension queue 2102. Compared 192207 event pairs, 1 based on Foata normal form. 282/15746 useless extension candidates. Maximal degree in co-relation 294900. Up to 12281 conditions per place.). [2023-11-29 23:38:48,288 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 23:38:48,289 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 23:38:48,289 INFO L457 BasicCegarLoop]: Path program histogram: [19, 2, 1, 1] [2023-11-29 23:38:48,292 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 23:38:48,292 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 23:38:48,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:38:48 BasicIcfg [2023-11-29 23:38:48,295 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 23:38:48,295 INFO L158 Benchmark]: Toolchain (without parser) took 838903.70ms. Allocated memory was 501.2MB in the beginning and 4.7GB in the end (delta: 4.2GB). Free memory was 450.3MB in the beginning and 1.7GB in the end (delta: -1.3GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. [2023-11-29 23:38:48,295 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 343.9MB. Free memory was 293.9MB in the beginning and 293.8MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 23:38:48,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.33ms. Allocated memory is still 501.2MB. Free memory was 450.0MB in the beginning and 439.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 23:38:48,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.99ms. Allocated memory is still 501.2MB. Free memory was 439.3MB in the beginning and 437.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:38:48,296 INFO L158 Benchmark]: Boogie Preprocessor took 22.08ms. Allocated memory is still 501.2MB. Free memory was 437.5MB in the beginning and 436.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:38:48,296 INFO L158 Benchmark]: RCFGBuilder took 392.43ms. Allocated memory is still 501.2MB. Free memory was 436.4MB in the beginning and 424.1MB in the end (delta: 12.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-11-29 23:38:48,297 INFO L158 Benchmark]: TraceAbstraction took 838259.69ms. Allocated memory was 501.2MB in the beginning and 4.7GB in the end (delta: 4.2GB). Free memory was 423.5MB in the beginning and 1.7GB in the end (delta: -1.3GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. [2023-11-29 23:38:48,298 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 343.9MB. Free memory was 293.9MB in the beginning and 293.8MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 199.33ms. Allocated memory is still 501.2MB. Free memory was 450.0MB in the beginning and 439.3MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.99ms. Allocated memory is still 501.2MB. Free memory was 439.3MB in the beginning and 437.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.08ms. Allocated memory is still 501.2MB. Free memory was 437.5MB in the beginning and 436.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 392.43ms. Allocated memory is still 501.2MB. Free memory was 436.4MB in the beginning and 424.1MB in the end (delta: 12.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 838259.69ms. Allocated memory was 501.2MB in the beginning and 4.7GB in the end (delta: 4.2GB). Free memory was 423.5MB in the beginning and 1.7GB in the end (delta: -1.3GB). Peak memory consumption was 3.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (23states, 47/84 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 296491 conditions, 14893 events (5528/14892 cut-off events. For 283886/297129 co-relation queries the response was YES. Maximal size of possible extension queue 2102. Compared 192207 event pairs, 1 based on Foata normal form. 282/15746 useless extension candidates. Maximal degree in co-relation 294900. Up to 12281 conditions per place.). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (23states, 47/84 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 296491 conditions, 14893 events (5528/14892 cut-off events. For 283886/297129 co-relation queries the response was YES. Maximal size of possible extension queue 2102. Compared 192207 event pairs, 1 based on Foata normal form. 282/15746 useless extension candidates. Maximal degree in co-relation 294900. Up to 12281 conditions per place.). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (23states, 47/84 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 296491 conditions, 14893 events (5528/14892 cut-off events. For 283886/297129 co-relation queries the response was YES. Maximal size of possible extension queue 2102. Compared 192207 event pairs, 1 based on Foata normal form. 282/15746 useless extension candidates. Maximal degree in co-relation 294900. Up to 12281 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 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: 838.2s, OverallIterations: 23, TraceHistogramMax: 2, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 822.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3738 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3738 mSDsluCounter, 5343 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4673 mSDsCounter, 551 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13668 IncrementalHoareTripleChecker+Invalid, 14219 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 551 mSolverCounterUnsat, 670 mSDtfsCounter, 13668 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3548 GetRequests, 2352 SyntacticMatches, 20 SemanticMatches, 1176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26260 ImplicationChecksByTransitivity, 13.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1047909occurred in iteration=22, InterpolantAutomatonStates: 953, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.7s InterpolantComputationTime, 2870 NumberOfCodeBlocks, 2870 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 3986 ConstructedInterpolants, 0 QuantifiedInterpolants, 13931 SizeOfPredicates, 167 NumberOfNonLiveVariables, 3132 ConjunctsInSsa, 269 ConjunctsInUnsatCore, 59 InterpolantComputations, 7 PerfectInterpolantSequences, 146/261 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