/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:23:21,231 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:23:21,299 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:23:21,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:23:21,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:23:21,323 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:23:21,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:23:21,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:23:21,324 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:23:21,327 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:23:21,328 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:23:21,328 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:23:21,328 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:23:21,329 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:23:21,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:23:21,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:23:21,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:23:21,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:23:21,329 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:23:21,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:23:21,330 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:23:21,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:23:21,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:23:21,331 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:23:21,331 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:23:21,332 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:23:21,332 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:23:21,332 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:23:21,332 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:23:21,332 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:23:21,333 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:23:21,333 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:23:21,333 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:23:21,333 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:23:21,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:23:21,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:23:21,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:23:21,542 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:23:21,542 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:23:21,543 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-12-09 15:23:22,629 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:23:22,809 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:23:22,810 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-12-09 15:23:22,817 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d528aed4e/cdee1fdd73d549d396df6d2ed106c9d5/FLAG7fce47231 [2023-12-09 15:23:22,834 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d528aed4e/cdee1fdd73d549d396df6d2ed106c9d5 [2023-12-09 15:23:22,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:23:22,836 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:23:22,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:23:22,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:23:22,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:23:22,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:23:22" (1/1) ... [2023-12-09 15:23:22,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a4635c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:22, skipping insertion in model container [2023-12-09 15:23:22,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:23:22" (1/1) ... [2023-12-09 15:23:22,858 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:23:22,982 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c[2113,2126] [2023-12-09 15:23:22,987 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:23:22,994 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:23:23,015 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c[2113,2126] [2023-12-09 15:23:23,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:23:23,028 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:23:23,028 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:23:23,033 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:23:23,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23 WrapperNode [2023-12-09 15:23:23,033 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:23:23,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:23:23,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:23:23,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:23:23,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,045 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,065 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 79 [2023-12-09 15:23:23,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:23:23,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:23:23,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:23:23,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:23:23,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,090 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,093 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,095 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:23:23,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:23:23,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:23:23,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:23:23,096 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (1/1) ... [2023-12-09 15:23:23,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:23:23,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:23,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 15:23:23,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 15:23:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:23:23,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:23:23,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:23:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:23:23,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:23:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:23:23,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:23:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:23:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:23:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:23:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:23:23,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:23:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:23:23,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:23:23,167 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:23:23,259 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:23:23,261 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:23:23,429 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:23:23,459 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:23:23,460 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 15:23:23,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:23:23 BoogieIcfgContainer [2023-12-09 15:23:23,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:23:23,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:23:23,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:23:23,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:23:23,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:23:22" (1/3) ... [2023-12-09 15:23:23,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370638bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:23:23, skipping insertion in model container [2023-12-09 15:23:23,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:23" (2/3) ... [2023-12-09 15:23:23,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370638bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:23:23, skipping insertion in model container [2023-12-09 15:23:23,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:23:23" (3/3) ... [2023-12-09 15:23:23,469 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2023-12-09 15:23:23,481 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:23:23,481 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:23:23,482 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:23:23,516 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:23:23,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 196 flow [2023-12-09 15:23:23,598 INFO L124 PetriNetUnfolderBase]: 6/89 cut-off events. [2023-12-09 15:23:23,598 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:23:23,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-12-09 15:23:23,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 91 transitions, 196 flow [2023-12-09 15:23:23,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 80 transitions, 172 flow [2023-12-09 15:23:23,611 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:23:23,621 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;@4743efc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:23:23,621 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:23:23,637 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:23:23,637 INFO L124 PetriNetUnfolderBase]: 6/79 cut-off events. [2023-12-09 15:23:23,637 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:23:23,637 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:23,638 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:23,639 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:23,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1065375783, now seen corresponding path program 1 times [2023-12-09 15:23:23,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:23,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241710512] [2023-12-09 15:23:23,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:23,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:24,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:24,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:24,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241710512] [2023-12-09 15:23:24,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241710512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:24,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:24,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-09 15:23:24,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681123590] [2023-12-09 15:23:24,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:24,562 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:23:24,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:24,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:23:24,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:23:24,594 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-12-09 15:23:24,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 80 transitions, 172 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:24,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:24,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-12-09 15:23:24,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:25,034 INFO L124 PetriNetUnfolderBase]: 97/323 cut-off events. [2023-12-09 15:23:25,034 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-12-09 15:23:25,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 323 events. 97/323 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1406 event pairs, 46 based on Foata normal form. 10/296 useless extension candidates. Maximal degree in co-relation 422. Up to 135 conditions per place. [2023-12-09 15:23:25,037 INFO L140 encePairwiseOnDemand]: 71/91 looper letters, 59 selfloop transitions, 16 changer transitions 15/129 dead transitions. [2023-12-09 15:23:25,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 129 transitions, 477 flow [2023-12-09 15:23:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-09 15:23:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-12-09 15:23:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 987 transitions. [2023-12-09 15:23:25,049 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2023-12-09 15:23:25,050 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 987 transitions. [2023-12-09 15:23:25,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 987 transitions. [2023-12-09 15:23:25,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:25,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 987 transitions. [2023-12-09 15:23:25,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 54.833333333333336) internal successors, (987), 18 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) [2023-12-09 15:23:25,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:25,063 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 91.0) internal successors, (1729), 19 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:25,065 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 17 predicate places. [2023-12-09 15:23:25,066 INFO L500 AbstractCegarLoop]: Abstraction has has 98 places, 129 transitions, 477 flow [2023-12-09 15:23:25,066 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:25,066 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:25,066 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:25,067 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:23:25,067 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:25,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash 369045209, now seen corresponding path program 2 times [2023-12-09 15:23:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774314867] [2023-12-09 15:23:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:25,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:25,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:25,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774314867] [2023-12-09 15:23:25,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774314867] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:25,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:25,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-09 15:23:25,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774447485] [2023-12-09 15:23:25,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:25,484 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:23:25,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:25,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:23:25,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:23:25,486 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-12-09 15:23:25,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 129 transitions, 477 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:25,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:25,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-12-09 15:23:25,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:25,720 INFO L124 PetriNetUnfolderBase]: 102/370 cut-off events. [2023-12-09 15:23:25,720 INFO L125 PetriNetUnfolderBase]: For 146/186 co-relation queries the response was YES. [2023-12-09 15:23:25,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 370 events. 102/370 cut-off events. For 146/186 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1815 event pairs, 43 based on Foata normal form. 4/335 useless extension candidates. Maximal degree in co-relation 631. Up to 135 conditions per place. [2023-12-09 15:23:25,723 INFO L140 encePairwiseOnDemand]: 76/91 looper letters, 62 selfloop transitions, 17 changer transitions 35/153 dead transitions. [2023-12-09 15:23:25,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 153 transitions, 819 flow [2023-12-09 15:23:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:23:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:23:25,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 864 transitions. [2023-12-09 15:23:25,725 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2023-12-09 15:23:25,725 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 864 transitions. [2023-12-09 15:23:25,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 864 transitions. [2023-12-09 15:23:25,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:25,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 864 transitions. [2023-12-09 15:23:25,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 54.0) internal successors, (864), 16 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:25,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:25,729 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:25,730 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 32 predicate places. [2023-12-09 15:23:25,730 INFO L500 AbstractCegarLoop]: Abstraction has has 113 places, 153 transitions, 819 flow [2023-12-09 15:23:25,730 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:25,730 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:25,730 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:25,731 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:23:25,731 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:25,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:25,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1243862967, now seen corresponding path program 3 times [2023-12-09 15:23:25,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:25,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062594928] [2023-12-09 15:23:25,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:25,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:26,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:26,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062594928] [2023-12-09 15:23:26,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062594928] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:26,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:26,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-09 15:23:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408348894] [2023-12-09 15:23:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:26,008 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:23:26,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:23:26,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:23:26,012 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-12-09 15:23:26,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 153 transitions, 819 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:26,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-12-09 15:23:26,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:26,283 INFO L124 PetriNetUnfolderBase]: 116/414 cut-off events. [2023-12-09 15:23:26,283 INFO L125 PetriNetUnfolderBase]: For 271/327 co-relation queries the response was YES. [2023-12-09 15:23:26,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 414 events. 116/414 cut-off events. For 271/327 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2113 event pairs, 42 based on Foata normal form. 9/379 useless extension candidates. Maximal degree in co-relation 1002. Up to 139 conditions per place. [2023-12-09 15:23:26,288 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 68 selfloop transitions, 28 changer transitions 55/190 dead transitions. [2023-12-09 15:23:26,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 190 transitions, 1355 flow [2023-12-09 15:23:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-09 15:23:26,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-12-09 15:23:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 919 transitions. [2023-12-09 15:23:26,290 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5940530058177117 [2023-12-09 15:23:26,290 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 919 transitions. [2023-12-09 15:23:26,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 919 transitions. [2023-12-09 15:23:26,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:26,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 919 transitions. [2023-12-09 15:23:26,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.05882352941177) internal successors, (919), 17 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,294 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,295 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 48 predicate places. [2023-12-09 15:23:26,296 INFO L500 AbstractCegarLoop]: Abstraction has has 129 places, 190 transitions, 1355 flow [2023-12-09 15:23:26,296 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,296 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:26,296 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:26,296 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:23:26,296 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:26,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:26,297 INFO L85 PathProgramCache]: Analyzing trace with hash 622309299, now seen corresponding path program 4 times [2023-12-09 15:23:26,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:26,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754477207] [2023-12-09 15:23:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:26,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:26,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:26,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754477207] [2023-12-09 15:23:26,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754477207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:26,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:26,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-09 15:23:26,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561832345] [2023-12-09 15:23:26,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:26,602 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:23:26,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:26,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:23:26,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:23:26,605 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-12-09 15:23:26,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 190 transitions, 1355 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:26,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-12-09 15:23:26,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:26,839 INFO L124 PetriNetUnfolderBase]: 117/455 cut-off events. [2023-12-09 15:23:26,839 INFO L125 PetriNetUnfolderBase]: For 545/657 co-relation queries the response was YES. [2023-12-09 15:23:26,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 455 events. 117/455 cut-off events. For 545/657 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2508 event pairs, 42 based on Foata normal form. 14/423 useless extension candidates. Maximal degree in co-relation 1303. Up to 139 conditions per place. [2023-12-09 15:23:26,842 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 68 selfloop transitions, 22 changer transitions 78/207 dead transitions. [2023-12-09 15:23:26,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 207 transitions, 1845 flow [2023-12-09 15:23:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-09 15:23:26,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-12-09 15:23:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 922 transitions. [2023-12-09 15:23:26,844 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5959922430510666 [2023-12-09 15:23:26,845 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 922 transitions. [2023-12-09 15:23:26,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 922 transitions. [2023-12-09 15:23:26,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:26,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 922 transitions. [2023-12-09 15:23:26,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 54.23529411764706) internal successors, (922), 17 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,849 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,851 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 64 predicate places. [2023-12-09 15:23:26,851 INFO L500 AbstractCegarLoop]: Abstraction has has 145 places, 207 transitions, 1845 flow [2023-12-09 15:23:26,851 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,851 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:26,852 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:26,852 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:23:26,852 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:26,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:26,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1769914299, now seen corresponding path program 5 times [2023-12-09 15:23:26,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:26,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429994580] [2023-12-09 15:23:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:26,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:27,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:27,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429994580] [2023-12-09 15:23:27,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429994580] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:27,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:27,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-09 15:23:27,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135383138] [2023-12-09 15:23:27,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:27,173 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:23:27,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:27,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:23:27,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:23:27,175 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-12-09 15:23:27,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 207 transitions, 1845 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:27,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-12-09 15:23:27,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:27,408 INFO L124 PetriNetUnfolderBase]: 117/506 cut-off events. [2023-12-09 15:23:27,409 INFO L125 PetriNetUnfolderBase]: For 1030/1220 co-relation queries the response was YES. [2023-12-09 15:23:27,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2231 conditions, 506 events. 117/506 cut-off events. For 1030/1220 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2995 event pairs, 48 based on Foata normal form. 9/464 useless extension candidates. Maximal degree in co-relation 1413. Up to 139 conditions per place. [2023-12-09 15:23:27,412 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 70 selfloop transitions, 26 changer transitions 92/227 dead transitions. [2023-12-09 15:23:27,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 227 transitions, 2436 flow [2023-12-09 15:23:27,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:23:27,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:23:27,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 874 transitions. [2023-12-09 15:23:27,414 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6002747252747253 [2023-12-09 15:23:27,414 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 874 transitions. [2023-12-09 15:23:27,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 874 transitions. [2023-12-09 15:23:27,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:27,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 874 transitions. [2023-12-09 15:23:27,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 54.625) internal successors, (874), 16 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,418 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,420 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 79 predicate places. [2023-12-09 15:23:27,420 INFO L500 AbstractCegarLoop]: Abstraction has has 160 places, 227 transitions, 2436 flow [2023-12-09 15:23:27,420 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,420 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:27,420 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:27,420 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:23:27,421 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:27,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:27,422 INFO L85 PathProgramCache]: Analyzing trace with hash 105325811, now seen corresponding path program 6 times [2023-12-09 15:23:27,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:27,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257587614] [2023-12-09 15:23:27,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:27,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:27,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:27,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257587614] [2023-12-09 15:23:27,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257587614] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:27,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:27,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-09 15:23:27,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515773228] [2023-12-09 15:23:27,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:27,702 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:23:27,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:27,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:23:27,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:23:27,703 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 91 [2023-12-09 15:23:27,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 227 transitions, 2436 flow. Second operand has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:27,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 91 [2023-12-09 15:23:27,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:27,887 INFO L124 PetriNetUnfolderBase]: 117/487 cut-off events. [2023-12-09 15:23:27,887 INFO L125 PetriNetUnfolderBase]: For 1309/1568 co-relation queries the response was YES. [2023-12-09 15:23:27,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 487 events. 117/487 cut-off events. For 1309/1568 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2863 event pairs, 43 based on Foata normal form. 8/449 useless extension candidates. Maximal degree in co-relation 1619. Up to 139 conditions per place. [2023-12-09 15:23:27,890 INFO L140 encePairwiseOnDemand]: 76/91 looper letters, 49 selfloop transitions, 21 changer transitions 112/221 dead transitions. [2023-12-09 15:23:27,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 221 transitions, 2728 flow [2023-12-09 15:23:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-09 15:23:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-12-09 15:23:27,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 813 transitions. [2023-12-09 15:23:27,892 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5956043956043956 [2023-12-09 15:23:27,892 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 813 transitions. [2023-12-09 15:23:27,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 813 transitions. [2023-12-09 15:23:27,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:27,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 813 transitions. [2023-12-09 15:23:27,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 54.2) internal successors, (813), 15 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,896 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,897 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 93 predicate places. [2023-12-09 15:23:27,898 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 221 transitions, 2728 flow [2023-12-09 15:23:27,898 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.25) internal successors, (615), 12 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,898 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:27,898 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:27,898 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:23:27,898 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:27,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:27,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1369594061, now seen corresponding path program 1 times [2023-12-09 15:23:27,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:27,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954571909] [2023-12-09 15:23:27,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:27,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:27,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:28,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:28,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:28,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954571909] [2023-12-09 15:23:28,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954571909] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:28,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367029919] [2023-12-09 15:23:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:28,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:28,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:28,256 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:23:28,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:23:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:28,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:23:28,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:28,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:29,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367029919] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:29,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:29,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-12-09 15:23:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509435155] [2023-12-09 15:23:29,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:29,197 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-09 15:23:29,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-09 15:23:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2023-12-09 15:23:29,200 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:23:29,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 221 transitions, 2728 flow. Second operand has 36 states, 36 states have (on average 50.02777777777778) internal successors, (1801), 36 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:29,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:29,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:23:29,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:30,948 INFO L124 PetriNetUnfolderBase]: 274/989 cut-off events. [2023-12-09 15:23:30,949 INFO L125 PetriNetUnfolderBase]: For 3352/3716 co-relation queries the response was YES. [2023-12-09 15:23:30,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6062 conditions, 989 events. 274/989 cut-off events. For 3352/3716 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6915 event pairs, 19 based on Foata normal form. 41/935 useless extension candidates. Maximal degree in co-relation 4088. Up to 511 conditions per place. [2023-12-09 15:23:30,956 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 155 selfloop transitions, 116 changer transitions 151/460 dead transitions. [2023-12-09 15:23:30,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 460 transitions, 6963 flow [2023-12-09 15:23:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-09 15:23:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-12-09 15:23:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 3808 transitions. [2023-12-09 15:23:30,963 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5732349841938883 [2023-12-09 15:23:30,963 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 3808 transitions. [2023-12-09 15:23:30,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 3808 transitions. [2023-12-09 15:23:30,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:30,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 3808 transitions. [2023-12-09 15:23:30,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 52.16438356164384) internal successors, (3808), 73 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:30,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 91.0) internal successors, (6734), 74 states have internal predecessors, (6734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:30,984 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 91.0) internal successors, (6734), 74 states have internal predecessors, (6734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:30,984 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 165 predicate places. [2023-12-09 15:23:30,984 INFO L500 AbstractCegarLoop]: Abstraction has has 246 places, 460 transitions, 6963 flow [2023-12-09 15:23:30,985 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.02777777777778) internal successors, (1801), 36 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:30,985 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:30,985 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:31,005 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:23:31,190 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:31,190 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:31,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:31,190 INFO L85 PathProgramCache]: Analyzing trace with hash -168045607, now seen corresponding path program 2 times [2023-12-09 15:23:31,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:31,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740907151] [2023-12-09 15:23:31,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:31,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:31,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:31,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740907151] [2023-12-09 15:23:31,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740907151] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:31,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206095476] [2023-12-09 15:23:31,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:23:31,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:31,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:31,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:23:31,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:23:31,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:23:31,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:31,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:23:31,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:31,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:31,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:32,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206095476] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:32,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:32,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-12-09 15:23:32,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428912309] [2023-12-09 15:23:32,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:32,210 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-09 15:23:32,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-09 15:23:32,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1084, Unknown=0, NotChecked=0, Total=1260 [2023-12-09 15:23:32,212 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:23:32,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 460 transitions, 6963 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:32,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:32,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:23:32,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:33,656 INFO L124 PetriNetUnfolderBase]: 351/1323 cut-off events. [2023-12-09 15:23:33,657 INFO L125 PetriNetUnfolderBase]: For 5791/6123 co-relation queries the response was YES. [2023-12-09 15:23:33,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8881 conditions, 1323 events. 351/1323 cut-off events. For 5791/6123 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10252 event pairs, 28 based on Foata normal form. 54/1255 useless extension candidates. Maximal degree in co-relation 6101. Up to 706 conditions per place. [2023-12-09 15:23:33,666 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 222 selfloop transitions, 168 changer transitions 194/622 dead transitions. [2023-12-09 15:23:33,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 622 transitions, 10690 flow [2023-12-09 15:23:33,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-09 15:23:33,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-12-09 15:23:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 3467 transitions. [2023-12-09 15:23:33,670 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5686403149089716 [2023-12-09 15:23:33,670 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 3467 transitions. [2023-12-09 15:23:33,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 3467 transitions. [2023-12-09 15:23:33,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:33,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 3467 transitions. [2023-12-09 15:23:33,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 51.74626865671642) internal successors, (3467), 67 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:33,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 91.0) internal successors, (6188), 68 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:33,682 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 91.0) internal successors, (6188), 68 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:33,682 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 231 predicate places. [2023-12-09 15:23:33,682 INFO L500 AbstractCegarLoop]: Abstraction has has 312 places, 622 transitions, 10690 flow [2023-12-09 15:23:33,683 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:33,683 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:33,683 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:33,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:23:33,888 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-09 15:23:33,889 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:33,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash 787403493, now seen corresponding path program 3 times [2023-12-09 15:23:33,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:33,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982422347] [2023-12-09 15:23:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:34,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:34,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982422347] [2023-12-09 15:23:34,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982422347] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:34,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917396949] [2023-12-09 15:23:34,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:23:34,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:34,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:34,184 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:23:34,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:23:34,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:23:34,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:34,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:23:34,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:34,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:35,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:35,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917396949] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:35,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:35,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-12-09 15:23:35,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279947841] [2023-12-09 15:23:35,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:35,079 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-09 15:23:35,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:35,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-09 15:23:35,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1075, Unknown=0, NotChecked=0, Total=1260 [2023-12-09 15:23:35,084 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:23:35,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 622 transitions, 10690 flow. Second operand has 36 states, 36 states have (on average 49.97222222222222) internal successors, (1799), 36 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:35,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:35,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:23:35,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:38,372 INFO L124 PetriNetUnfolderBase]: 461/1690 cut-off events. [2023-12-09 15:23:38,373 INFO L125 PetriNetUnfolderBase]: For 8737/9188 co-relation queries the response was YES. [2023-12-09 15:23:38,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12558 conditions, 1690 events. 461/1690 cut-off events. For 8737/9188 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 13940 event pairs, 39 based on Foata normal form. 64/1590 useless extension candidates. Maximal degree in co-relation 8879. Up to 942 conditions per place. [2023-12-09 15:23:38,386 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 272 selfloop transitions, 280 changer transitions 241/831 dead transitions. [2023-12-09 15:23:38,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 831 transitions, 15948 flow [2023-12-09 15:23:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-12-09 15:23:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2023-12-09 15:23:38,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 6147 transitions. [2023-12-09 15:23:38,397 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5676424415920214 [2023-12-09 15:23:38,397 INFO L72 ComplementDD]: Start complementDD. Operand 119 states and 6147 transitions. [2023-12-09 15:23:38,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 6147 transitions. [2023-12-09 15:23:38,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:38,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 119 states and 6147 transitions. [2023-12-09 15:23:38,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 120 states, 119 states have (on average 51.65546218487395) internal successors, (6147), 119 states have internal predecessors, (6147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:38,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 120 states, 120 states have (on average 91.0) internal successors, (10920), 120 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:38,435 INFO L81 ComplementDD]: Finished complementDD. Result has 120 states, 120 states have (on average 91.0) internal successors, (10920), 120 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:38,436 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 349 predicate places. [2023-12-09 15:23:38,436 INFO L500 AbstractCegarLoop]: Abstraction has has 430 places, 831 transitions, 15948 flow [2023-12-09 15:23:38,438 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 49.97222222222222) internal successors, (1799), 36 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:38,438 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:38,438 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:38,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-09 15:23:38,645 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:38,648 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:38,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:38,648 INFO L85 PathProgramCache]: Analyzing trace with hash 2087946609, now seen corresponding path program 4 times [2023-12-09 15:23:38,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:38,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494544224] [2023-12-09 15:23:38,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:38,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:38,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:38,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494544224] [2023-12-09 15:23:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494544224] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:38,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197766533] [2023-12-09 15:23:38,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:23:38,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:38,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:39,005 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:23:39,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:23:39,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:23:39,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:39,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:23:39,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:39,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:39,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197766533] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:39,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:39,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-12-09 15:23:39,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399142398] [2023-12-09 15:23:39,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:39,765 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-09 15:23:39,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:39,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-09 15:23:39,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2023-12-09 15:23:39,767 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:23:39,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 831 transitions, 15948 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:39,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:39,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:23:39,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:44,196 INFO L124 PetriNetUnfolderBase]: 822/2962 cut-off events. [2023-12-09 15:23:44,196 INFO L125 PetriNetUnfolderBase]: For 18655/19256 co-relation queries the response was YES. [2023-12-09 15:23:44,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24087 conditions, 2962 events. 822/2962 cut-off events. For 18655/19256 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 27687 event pairs, 6 based on Foata normal form. 83/2755 useless extension candidates. Maximal degree in co-relation 16910. Up to 1803 conditions per place. [2023-12-09 15:23:44,222 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 535 selfloop transitions, 568 changer transitions 323/1464 dead transitions. [2023-12-09 15:23:44,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 1464 transitions, 31418 flow [2023-12-09 15:23:44,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-12-09 15:23:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2023-12-09 15:23:44,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 7740 transitions. [2023-12-09 15:23:44,236 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5746955746955746 [2023-12-09 15:23:44,236 INFO L72 ComplementDD]: Start complementDD. Operand 148 states and 7740 transitions. [2023-12-09 15:23:44,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 148 states and 7740 transitions. [2023-12-09 15:23:44,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:44,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 148 states and 7740 transitions. [2023-12-09 15:23:44,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 149 states, 148 states have (on average 52.2972972972973) internal successors, (7740), 148 states have internal predecessors, (7740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:44,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 149 states, 149 states have (on average 91.0) internal successors, (13559), 149 states have internal predecessors, (13559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:44,266 INFO L81 ComplementDD]: Finished complementDD. Result has 149 states, 149 states have (on average 91.0) internal successors, (13559), 149 states have internal predecessors, (13559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:44,266 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 496 predicate places. [2023-12-09 15:23:44,267 INFO L500 AbstractCegarLoop]: Abstraction has has 577 places, 1464 transitions, 31418 flow [2023-12-09 15:23:44,267 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:44,267 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:44,268 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:44,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-09 15:23:44,472 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:44,472 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:44,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:44,473 INFO L85 PathProgramCache]: Analyzing trace with hash -890807713, now seen corresponding path program 5 times [2023-12-09 15:23:44,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:44,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334484236] [2023-12-09 15:23:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:44,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:44,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:44,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334484236] [2023-12-09 15:23:44,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334484236] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:44,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886935928] [2023-12-09 15:23:44,727 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:23:44,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:44,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:44,728 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:23:44,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:23:44,784 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:23:44,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:44,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:23:44,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:45,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:45,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886935928] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:45,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:45,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-12-09 15:23:45,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731612965] [2023-12-09 15:23:45,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:45,436 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-09 15:23:45,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:45,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-09 15:23:45,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2023-12-09 15:23:45,439 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:23:45,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 1464 transitions, 31418 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:45,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:45,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:23:45,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:47,435 INFO L124 PetriNetUnfolderBase]: 1009/3526 cut-off events. [2023-12-09 15:23:47,435 INFO L125 PetriNetUnfolderBase]: For 25009/25725 co-relation queries the response was YES. [2023-12-09 15:23:47,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31579 conditions, 3526 events. 1009/3526 cut-off events. For 25009/25725 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33669 event pairs, 7 based on Foata normal form. 55/3254 useless extension candidates. Maximal degree in co-relation 22848. Up to 2218 conditions per place. [2023-12-09 15:23:47,465 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 876 selfloop transitions, 498 changer transitions 364/1776 dead transitions. [2023-12-09 15:23:47,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 1776 transitions, 41662 flow [2023-12-09 15:23:47,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-09 15:23:47,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-12-09 15:23:47,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2754 transitions. [2023-12-09 15:23:47,469 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5710138917686087 [2023-12-09 15:23:47,469 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2754 transitions. [2023-12-09 15:23:47,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2754 transitions. [2023-12-09 15:23:47,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:47,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2754 transitions. [2023-12-09 15:23:47,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 51.9622641509434) internal successors, (2754), 53 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:47,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 91.0) internal successors, (4914), 54 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:47,477 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 91.0) internal successors, (4914), 54 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:47,477 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 548 predicate places. [2023-12-09 15:23:47,477 INFO L500 AbstractCegarLoop]: Abstraction has has 629 places, 1776 transitions, 41662 flow [2023-12-09 15:23:47,478 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:47,478 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:47,478 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:47,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:23:47,684 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-09 15:23:47,685 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:47,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:47,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1946879097, now seen corresponding path program 6 times [2023-12-09 15:23:47,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:47,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726873619] [2023-12-09 15:23:47,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:47,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:47,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:47,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:47,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726873619] [2023-12-09 15:23:47,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726873619] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:47,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146061217] [2023-12-09 15:23:47,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:23:47,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:47,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:47,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:23:47,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:23:48,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-09 15:23:48,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:48,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:23:48,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:48,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:48,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:48,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:48,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146061217] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:48,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:48,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-12-09 15:23:48,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7227860] [2023-12-09 15:23:48,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:48,655 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-09 15:23:48,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:48,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-09 15:23:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1038, Unknown=0, NotChecked=0, Total=1260 [2023-12-09 15:23:48,656 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:23:48,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 1776 transitions, 41662 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:48,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:48,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:23:48,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:50,430 INFO L124 PetriNetUnfolderBase]: 1004/3553 cut-off events. [2023-12-09 15:23:50,430 INFO L125 PetriNetUnfolderBase]: For 29031/29971 co-relation queries the response was YES. [2023-12-09 15:23:50,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34448 conditions, 3553 events. 1004/3553 cut-off events. For 29031/29971 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 34286 event pairs, 16 based on Foata normal form. 59/3287 useless extension candidates. Maximal degree in co-relation 28921. Up to 2236 conditions per place. [2023-12-09 15:23:50,458 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 930 selfloop transitions, 458 changer transitions 383/1809 dead transitions. [2023-12-09 15:23:50,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 1809 transitions, 45987 flow [2023-12-09 15:23:50,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-09 15:23:50,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-12-09 15:23:50,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1714 transitions. [2023-12-09 15:23:50,460 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5707625707625708 [2023-12-09 15:23:50,460 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1714 transitions. [2023-12-09 15:23:50,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1714 transitions. [2023-12-09 15:23:50,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:50,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1714 transitions. [2023-12-09 15:23:50,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 51.93939393939394) internal successors, (1714), 33 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:50,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 91.0) internal successors, (3094), 34 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:50,465 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 91.0) internal successors, (3094), 34 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:50,467 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 580 predicate places. [2023-12-09 15:23:50,467 INFO L500 AbstractCegarLoop]: Abstraction has has 661 places, 1809 transitions, 45987 flow [2023-12-09 15:23:50,467 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:50,467 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:50,467 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:50,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:23:50,672 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:50,672 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:50,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:50,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1787022583, now seen corresponding path program 7 times [2023-12-09 15:23:50,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:50,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746579138] [2023-12-09 15:23:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:50,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:50,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:50,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746579138] [2023-12-09 15:23:50,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746579138] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:50,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592115495] [2023-12-09 15:23:50,934 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:23:50,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:50,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:50,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:23:50,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:23:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:50,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:23:50,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:51,336 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:51,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592115495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:51,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:51,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-12-09 15:23:51,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748618974] [2023-12-09 15:23:51,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:51,616 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-09 15:23:51,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:51,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-09 15:23:51,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1068, Unknown=0, NotChecked=0, Total=1260 [2023-12-09 15:23:51,622 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:23:51,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 1809 transitions, 45987 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:51,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:51,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:23:51,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:55,637 INFO L124 PetriNetUnfolderBase]: 1224/4303 cut-off events. [2023-12-09 15:23:55,638 INFO L125 PetriNetUnfolderBase]: For 40602/41597 co-relation queries the response was YES. [2023-12-09 15:23:55,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44753 conditions, 4303 events. 1224/4303 cut-off events. For 40602/41597 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 43133 event pairs, 16 based on Foata normal form. 76/3982 useless extension candidates. Maximal degree in co-relation 32782. Up to 2734 conditions per place. [2023-12-09 15:23:55,674 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 837 selfloop transitions, 887 changer transitions 459/2221 dead transitions. [2023-12-09 15:23:55,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 2221 transitions, 60948 flow [2023-12-09 15:23:55,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-12-09 15:23:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-12-09 15:23:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 6181 transitions. [2023-12-09 15:23:55,692 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.566025641025641 [2023-12-09 15:23:55,692 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 6181 transitions. [2023-12-09 15:23:55,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 6181 transitions. [2023-12-09 15:23:55,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:55,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 6181 transitions. [2023-12-09 15:23:55,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 51.50833333333333) internal successors, (6181), 120 states have internal predecessors, (6181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:55,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 91.0) internal successors, (11011), 121 states have internal predecessors, (11011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:55,710 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 91.0) internal successors, (11011), 121 states have internal predecessors, (11011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:55,711 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 699 predicate places. [2023-12-09 15:23:55,711 INFO L500 AbstractCegarLoop]: Abstraction has has 780 places, 2221 transitions, 60948 flow [2023-12-09 15:23:55,711 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:55,711 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:55,712 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:55,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:23:55,916 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:55,917 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:23:55,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash -928430131, now seen corresponding path program 8 times [2023-12-09 15:23:55,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:55,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530012112] [2023-12-09 15:23:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:55,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:56,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:56,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:56,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530012112] [2023-12-09 15:23:56,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530012112] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:56,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652238923] [2023-12-09 15:23:56,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:23:56,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:56,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:56,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:23:56,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:23:56,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:23:56,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:56,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:23:56,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:56,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:56,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:57,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652238923] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:57,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:57,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-12-09 15:23:57,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787137097] [2023-12-09 15:23:57,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:57,034 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-09 15:23:57,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:57,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-09 15:23:57,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1070, Unknown=0, NotChecked=0, Total=1260 [2023-12-09 15:23:57,036 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:23:57,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 2221 transitions, 60948 flow. Second operand has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:57,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:57,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:23:57,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:00,645 INFO L124 PetriNetUnfolderBase]: 1320/4734 cut-off events. [2023-12-09 15:24:00,645 INFO L125 PetriNetUnfolderBase]: For 51987/53127 co-relation queries the response was YES. [2023-12-09 15:24:00,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52269 conditions, 4734 events. 1320/4734 cut-off events. For 51987/53127 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 48955 event pairs, 16 based on Foata normal form. 55/4357 useless extension candidates. Maximal degree in co-relation 38093. Up to 2992 conditions per place. [2023-12-09 15:24:00,777 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 1064 selfloop transitions, 828 changer transitions 513/2443 dead transitions. [2023-12-09 15:24:00,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 855 places, 2443 transitions, 71833 flow [2023-12-09 15:24:00,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-09 15:24:00,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-12-09 15:24:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 3922 transitions. [2023-12-09 15:24:00,781 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5670908039329092 [2023-12-09 15:24:00,781 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 3922 transitions. [2023-12-09 15:24:00,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 3922 transitions. [2023-12-09 15:24:00,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:00,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 3922 transitions. [2023-12-09 15:24:00,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 51.60526315789474) internal successors, (3922), 76 states have internal predecessors, (3922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:00,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 91.0) internal successors, (7007), 77 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:00,790 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 91.0) internal successors, (7007), 77 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:00,791 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 774 predicate places. [2023-12-09 15:24:00,791 INFO L500 AbstractCegarLoop]: Abstraction has has 855 places, 2443 transitions, 71833 flow [2023-12-09 15:24:00,791 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 50.0) internal successors, (1800), 36 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:00,792 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:00,792 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:00,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:24:00,996 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,SelfDestructingSolverStorable13 [2023-12-09 15:24:00,997 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:00,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash 58280503, now seen corresponding path program 9 times [2023-12-09 15:24:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:00,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244117185] [2023-12-09 15:24:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:00,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:01,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:01,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:01,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244117185] [2023-12-09 15:24:01,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244117185] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:01,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353383558] [2023-12-09 15:24:01,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:24:01,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:01,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:01,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:24:01,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:24:01,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:24:01,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:01,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:24:01,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:01,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:01,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:01,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353383558] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:01,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:01,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-12-09 15:24:01,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110029414] [2023-12-09 15:24:01,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:01,950 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-09 15:24:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-09 15:24:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1104, Unknown=0, NotChecked=0, Total=1332 [2023-12-09 15:24:01,952 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:24:01,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 855 places, 2443 transitions, 71833 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:01,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:01,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:24:01,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:05,000 INFO L124 PetriNetUnfolderBase]: 1336/4844 cut-off events. [2023-12-09 15:24:05,000 INFO L125 PetriNetUnfolderBase]: For 60142/61576 co-relation queries the response was YES. [2023-12-09 15:24:05,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56893 conditions, 4844 events. 1336/4844 cut-off events. For 60142/61576 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 50541 event pairs, 15 based on Foata normal form. 55/4462 useless extension candidates. Maximal degree in co-relation 41459. Up to 3056 conditions per place. [2023-12-09 15:24:05,046 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 1307 selfloop transitions, 623 changer transitions 546/2514 dead transitions. [2023-12-09 15:24:05,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 2514 transitions, 78879 flow [2023-12-09 15:24:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-09 15:24:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-12-09 15:24:05,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2573 transitions. [2023-12-09 15:24:05,048 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5654945054945055 [2023-12-09 15:24:05,048 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2573 transitions. [2023-12-09 15:24:05,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2573 transitions. [2023-12-09 15:24:05,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:05,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2573 transitions. [2023-12-09 15:24:05,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 51.46) internal successors, (2573), 50 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:05,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 91.0) internal successors, (4641), 51 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:05,055 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 91.0) internal successors, (4641), 51 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:05,055 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 823 predicate places. [2023-12-09 15:24:05,055 INFO L500 AbstractCegarLoop]: Abstraction has has 904 places, 2514 transitions, 78879 flow [2023-12-09 15:24:05,056 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:05,056 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:05,056 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:05,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:24:05,260 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,SelfDestructingSolverStorable14 [2023-12-09 15:24:05,261 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:05,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:05,261 INFO L85 PathProgramCache]: Analyzing trace with hash 605377907, now seen corresponding path program 10 times [2023-12-09 15:24:05,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:05,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006451563] [2023-12-09 15:24:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:05,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:05,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:05,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006451563] [2023-12-09 15:24:05,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006451563] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:05,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246214046] [2023-12-09 15:24:05,536 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:24:05,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:05,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:05,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:24:05,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:24:05,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:24:05,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:05,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:24:05,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:06,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:06,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:06,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:06,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246214046] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:06,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:06,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-12-09 15:24:06,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942583482] [2023-12-09 15:24:06,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:06,285 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-09 15:24:06,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:06,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-09 15:24:06,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2023-12-09 15:24:06,287 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:24:06,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 2514 transitions, 78879 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:06,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:06,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:24:06,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:09,611 INFO L124 PetriNetUnfolderBase]: 1387/5055 cut-off events. [2023-12-09 15:24:09,611 INFO L125 PetriNetUnfolderBase]: For 70131/71707 co-relation queries the response was YES. [2023-12-09 15:24:09,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62909 conditions, 5055 events. 1387/5055 cut-off events. For 70131/71707 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 53303 event pairs, 7 based on Foata normal form. 58/4662 useless extension candidates. Maximal degree in co-relation 46369. Up to 3190 conditions per place. [2023-12-09 15:24:09,656 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1281 selfloop transitions, 712 changer transitions 606/2637 dead transitions. [2023-12-09 15:24:09,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 2637 transitions, 87983 flow [2023-12-09 15:24:09,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-09 15:24:09,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-12-09 15:24:09,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 2882 transitions. [2023-12-09 15:24:09,658 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5655416012558869 [2023-12-09 15:24:09,659 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 2882 transitions. [2023-12-09 15:24:09,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 2882 transitions. [2023-12-09 15:24:09,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:09,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 2882 transitions. [2023-12-09 15:24:09,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 51.464285714285715) internal successors, (2882), 56 states have internal predecessors, (2882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:09,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 91.0) internal successors, (5187), 57 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:09,665 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 91.0) internal successors, (5187), 57 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:09,665 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 878 predicate places. [2023-12-09 15:24:09,665 INFO L500 AbstractCegarLoop]: Abstraction has has 959 places, 2637 transitions, 87983 flow [2023-12-09 15:24:09,666 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:09,666 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:09,666 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:09,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-09 15:24:09,870 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,SelfDestructingSolverStorable15 [2023-12-09 15:24:09,870 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:09,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:09,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1896906351, now seen corresponding path program 11 times [2023-12-09 15:24:09,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:09,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300517745] [2023-12-09 15:24:09,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:09,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:10,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:10,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:10,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300517745] [2023-12-09 15:24:10,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300517745] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:10,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138399130] [2023-12-09 15:24:10,129 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:24:10,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:10,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:10,145 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:24:10,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:24:10,229 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:24:10,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:10,230 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:24:10,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:10,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138399130] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:10,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:10,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-12-09 15:24:10,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626630342] [2023-12-09 15:24:10,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:10,914 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-09 15:24:10,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:10,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-09 15:24:10,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2023-12-09 15:24:10,915 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:24:10,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 2637 transitions, 87983 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:10,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:10,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:24:10,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:16,200 INFO L124 PetriNetUnfolderBase]: 1586/5828 cut-off events. [2023-12-09 15:24:16,200 INFO L125 PetriNetUnfolderBase]: For 90484/92278 co-relation queries the response was YES. [2023-12-09 15:24:16,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76610 conditions, 5828 events. 1586/5828 cut-off events. For 90484/92278 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 63659 event pairs, 6 based on Foata normal form. 53/5345 useless extension candidates. Maximal degree in co-relation 56494. Up to 3706 conditions per place. [2023-12-09 15:24:16,256 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1238 selfloop transitions, 1085 changer transitions 694/3055 dead transitions. [2023-12-09 15:24:16,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1064 places, 3055 transitions, 108136 flow [2023-12-09 15:24:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-09 15:24:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-12-09 15:24:16,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 5466 transitions. [2023-12-09 15:24:16,275 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5666597553390006 [2023-12-09 15:24:16,275 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 5466 transitions. [2023-12-09 15:24:16,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 5466 transitions. [2023-12-09 15:24:16,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:16,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 5466 transitions. [2023-12-09 15:24:16,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 51.56603773584906) internal successors, (5466), 106 states have internal predecessors, (5466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:16,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 91.0) internal successors, (9737), 107 states have internal predecessors, (9737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:16,301 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 91.0) internal successors, (9737), 107 states have internal predecessors, (9737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:16,302 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 983 predicate places. [2023-12-09 15:24:16,302 INFO L500 AbstractCegarLoop]: Abstraction has has 1064 places, 3055 transitions, 108136 flow [2023-12-09 15:24:16,302 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:16,302 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:16,302 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:16,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 15:24:16,516 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,SelfDestructingSolverStorable16 [2023-12-09 15:24:16,517 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:16,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1560622059, now seen corresponding path program 12 times [2023-12-09 15:24:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:16,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158433847] [2023-12-09 15:24:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:16,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:16,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:16,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158433847] [2023-12-09 15:24:16,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158433847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:16,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827952868] [2023-12-09 15:24:16,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:24:16,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:16,807 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:24:16,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 15:24:16,864 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-09 15:24:16,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:16,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:24:16,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:17,147 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:17,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827952868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:17,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:17,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 36 [2023-12-09 15:24:17,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899447727] [2023-12-09 15:24:17,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:17,431 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-09 15:24:17,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-09 15:24:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1074, Unknown=0, NotChecked=0, Total=1260 [2023-12-09 15:24:17,433 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:24:17,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1064 places, 3055 transitions, 108136 flow. Second operand has 36 states, 36 states have (on average 49.97222222222222) internal successors, (1799), 36 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:17,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:17,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:24:17,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:22,659 INFO L124 PetriNetUnfolderBase]: 1583/5890 cut-off events. [2023-12-09 15:24:22,660 INFO L125 PetriNetUnfolderBase]: For 103373/105372 co-relation queries the response was YES. [2023-12-09 15:24:22,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81464 conditions, 5890 events. 1583/5890 cut-off events. For 103373/105372 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 64769 event pairs, 7 based on Foata normal form. 59/5415 useless extension candidates. Maximal degree in co-relation 59986. Up to 3733 conditions per place. [2023-12-09 15:24:22,718 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1455 selfloop transitions, 879 changer transitions 729/3101 dead transitions. [2023-12-09 15:24:22,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1125 places, 3101 transitions, 115906 flow [2023-12-09 15:24:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-09 15:24:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-12-09 15:24:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 3224 transitions. [2023-12-09 15:24:22,751 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-12-09 15:24:22,751 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 3224 transitions. [2023-12-09 15:24:22,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 3224 transitions. [2023-12-09 15:24:22,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:22,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 3224 transitions. [2023-12-09 15:24:22,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 52.0) internal successors, (3224), 62 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:22,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 91.0) internal successors, (5733), 63 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:22,778 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 91.0) internal successors, (5733), 63 states have internal predecessors, (5733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:22,778 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1044 predicate places. [2023-12-09 15:24:22,778 INFO L500 AbstractCegarLoop]: Abstraction has has 1125 places, 3101 transitions, 115906 flow [2023-12-09 15:24:22,779 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 49.97222222222222) internal successors, (1799), 36 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:22,779 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:22,779 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:22,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-09 15:24:22,984 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,SelfDestructingSolverStorable17 [2023-12-09 15:24:22,984 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:22,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:22,984 INFO L85 PathProgramCache]: Analyzing trace with hash 808518937, now seen corresponding path program 13 times [2023-12-09 15:24:22,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:22,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334898738] [2023-12-09 15:24:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:22,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:23,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:23,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:23,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334898738] [2023-12-09 15:24:23,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334898738] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:23,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743379078] [2023-12-09 15:24:23,253 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:24:23,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:23,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:23,265 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:24:23,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-09 15:24:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:23,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:24:23,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:23,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:23,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743379078] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:23,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:23,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 35 [2023-12-09 15:24:23,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515569468] [2023-12-09 15:24:23,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:23,858 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-09 15:24:23,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:23,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-09 15:24:23,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2023-12-09 15:24:23,861 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:24:23,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1125 places, 3101 transitions, 115906 flow. Second operand has 35 states, 35 states have (on average 50.0) internal successors, (1750), 35 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:23,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:23,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:24:23,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:28,126 INFO L124 PetriNetUnfolderBase]: 1599/5950 cut-off events. [2023-12-09 15:24:28,126 INFO L125 PetriNetUnfolderBase]: For 113670/115430 co-relation queries the response was YES. [2023-12-09 15:24:28,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86536 conditions, 5950 events. 1599/5950 cut-off events. For 113670/115430 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 65640 event pairs, 15 based on Foata normal form. 61/5469 useless extension candidates. Maximal degree in co-relation 63775. Up to 3771 conditions per place. [2023-12-09 15:24:28,187 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 1573 selfloop transitions, 772 changer transitions 740/3123 dead transitions. [2023-12-09 15:24:28,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1170 places, 3123 transitions, 122906 flow [2023-12-09 15:24:28,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-12-09 15:24:28,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-12-09 15:24:28,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2359 transitions. [2023-12-09 15:24:28,189 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5635451505016722 [2023-12-09 15:24:28,189 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2359 transitions. [2023-12-09 15:24:28,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2359 transitions. [2023-12-09 15:24:28,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:28,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2359 transitions. [2023-12-09 15:24:28,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 51.28260869565217) internal successors, (2359), 46 states have internal predecessors, (2359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:28,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 91.0) internal successors, (4277), 47 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:28,193 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 91.0) internal successors, (4277), 47 states have internal predecessors, (4277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:28,194 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1089 predicate places. [2023-12-09 15:24:28,194 INFO L500 AbstractCegarLoop]: Abstraction has has 1170 places, 3123 transitions, 122906 flow [2023-12-09 15:24:28,194 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 50.0) internal successors, (1750), 35 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:28,194 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:28,194 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:28,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-09 15:24:28,398 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:28,398 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:28,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:28,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1989479053, now seen corresponding path program 14 times [2023-12-09 15:24:28,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:28,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339885328] [2023-12-09 15:24:28,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:28,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:28,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:28,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339885328] [2023-12-09 15:24:28,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339885328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:28,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50384196] [2023-12-09 15:24:28,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:24:28,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:28,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:28,771 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) [2023-12-09 15:24:28,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-09 15:24:28,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:24:28,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:28,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:24:28,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:29,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:29,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:29,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50384196] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:29,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:29,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-12-09 15:24:29,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062581299] [2023-12-09 15:24:29,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:29,431 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-09 15:24:29,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:29,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-09 15:24:29,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2023-12-09 15:24:29,433 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:24:29,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1170 places, 3123 transitions, 122906 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:29,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:29,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:24:29,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:34,077 INFO L124 PetriNetUnfolderBase]: 1611/5998 cut-off events. [2023-12-09 15:24:34,077 INFO L125 PetriNetUnfolderBase]: For 125332/127172 co-relation queries the response was YES. [2023-12-09 15:24:34,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91718 conditions, 5998 events. 1611/5998 cut-off events. For 125332/127172 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 66244 event pairs, 6 based on Foata normal form. 54/5509 useless extension candidates. Maximal degree in co-relation 67699. Up to 3810 conditions per place. [2023-12-09 15:24:34,139 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1542 selfloop transitions, 825 changer transitions 751/3156 dead transitions. [2023-12-09 15:24:34,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1219 places, 3156 transitions, 130456 flow [2023-12-09 15:24:34,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-09 15:24:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-12-09 15:24:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2578 transitions. [2023-12-09 15:24:34,141 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5665934065934066 [2023-12-09 15:24:34,142 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2578 transitions. [2023-12-09 15:24:34,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2578 transitions. [2023-12-09 15:24:34,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:34,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2578 transitions. [2023-12-09 15:24:34,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 51.56) internal successors, (2578), 50 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:34,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 91.0) internal successors, (4641), 51 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:34,147 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 91.0) internal successors, (4641), 51 states have internal predecessors, (4641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:34,147 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1138 predicate places. [2023-12-09 15:24:34,147 INFO L500 AbstractCegarLoop]: Abstraction has has 1219 places, 3156 transitions, 130456 flow [2023-12-09 15:24:34,148 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:34,148 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:34,148 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:34,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-09 15:24:34,352 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:34,352 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:34,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash -434984459, now seen corresponding path program 15 times [2023-12-09 15:24:34,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:34,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228321928] [2023-12-09 15:24:34,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:34,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:34,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228321928] [2023-12-09 15:24:34,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228321928] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:34,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050109809] [2023-12-09 15:24:34,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:24:34,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:34,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:34,570 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) [2023-12-09 15:24:34,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-09 15:24:34,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:24:34,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:34,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:24:34,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:35,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:35,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:35,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050109809] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:35,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:35,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-12-09 15:24:35,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97144041] [2023-12-09 15:24:35,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:35,281 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-09 15:24:35,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:35,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-09 15:24:35,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1113, Unknown=0, NotChecked=0, Total=1332 [2023-12-09 15:24:35,283 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:24:35,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1219 places, 3156 transitions, 130456 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:35,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:35,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:24:35,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:40,090 INFO L124 PetriNetUnfolderBase]: 1609/6068 cut-off events. [2023-12-09 15:24:40,090 INFO L125 PetriNetUnfolderBase]: For 139822/141812 co-relation queries the response was YES. [2023-12-09 15:24:40,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96802 conditions, 6068 events. 1609/6068 cut-off events. For 139822/141812 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 67483 event pairs, 9 based on Foata normal form. 55/5583 useless extension candidates. Maximal degree in co-relation 71267. Up to 3828 conditions per place. [2023-12-09 15:24:40,159 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 1573 selfloop transitions, 807 changer transitions 774/3192 dead transitions. [2023-12-09 15:24:40,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1271 places, 3192 transitions, 138282 flow [2023-12-09 15:24:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-09 15:24:40,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-12-09 15:24:40,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2725 transitions. [2023-12-09 15:24:40,162 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5650010366991499 [2023-12-09 15:24:40,162 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2725 transitions. [2023-12-09 15:24:40,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2725 transitions. [2023-12-09 15:24:40,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:40,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2725 transitions. [2023-12-09 15:24:40,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 51.41509433962264) internal successors, (2725), 53 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:40,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 91.0) internal successors, (4914), 54 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:40,167 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 91.0) internal successors, (4914), 54 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:40,167 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1190 predicate places. [2023-12-09 15:24:40,168 INFO L500 AbstractCegarLoop]: Abstraction has has 1271 places, 3192 transitions, 138282 flow [2023-12-09 15:24:40,168 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:40,168 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:40,168 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:40,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-09 15:24:40,372 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:40,372 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:40,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:40,373 INFO L85 PathProgramCache]: Analyzing trace with hash 635011413, now seen corresponding path program 16 times [2023-12-09 15:24:40,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:40,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380960972] [2023-12-09 15:24:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:40,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:40,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:40,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380960972] [2023-12-09 15:24:40,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380960972] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:40,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295442387] [2023-12-09 15:24:40,621 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:24:40,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:40,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:40,622 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) [2023-12-09 15:24:40,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-09 15:24:40,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:24:40,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:40,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:24:40,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:41,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:41,052 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:41,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295442387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:41,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:41,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-12-09 15:24:41,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637789934] [2023-12-09 15:24:41,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:41,353 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-09 15:24:41,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:41,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-09 15:24:41,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2023-12-09 15:24:41,355 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:24:41,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1271 places, 3192 transitions, 138282 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:41,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:41,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:24:41,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:47,144 INFO L124 PetriNetUnfolderBase]: 1625/6157 cut-off events. [2023-12-09 15:24:47,144 INFO L125 PetriNetUnfolderBase]: For 155846/158082 co-relation queries the response was YES. [2023-12-09 15:24:47,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102389 conditions, 6157 events. 1625/6157 cut-off events. For 155846/158082 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 68789 event pairs, 7 based on Foata normal form. 72/5682 useless extension candidates. Maximal degree in co-relation 75294. Up to 3867 conditions per place. [2023-12-09 15:24:47,382 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1458 selfloop transitions, 954 changer transitions 794/3244 dead transitions. [2023-12-09 15:24:47,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1342 places, 3244 transitions, 146979 flow [2023-12-09 15:24:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-09 15:24:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-12-09 15:24:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 3732 transitions. [2023-12-09 15:24:47,384 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5695970695970696 [2023-12-09 15:24:47,385 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 3732 transitions. [2023-12-09 15:24:47,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 3732 transitions. [2023-12-09 15:24:47,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:47,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 3732 transitions. [2023-12-09 15:24:47,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 51.833333333333336) internal successors, (3732), 72 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:47,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 91.0) internal successors, (6643), 73 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:47,391 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 91.0) internal successors, (6643), 73 states have internal predecessors, (6643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:47,392 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1261 predicate places. [2023-12-09 15:24:47,392 INFO L500 AbstractCegarLoop]: Abstraction has has 1342 places, 3244 transitions, 146979 flow [2023-12-09 15:24:47,392 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:47,392 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:47,392 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:47,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-09 15:24:47,596 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-09 15:24:47,597 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:47,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:47,597 INFO L85 PathProgramCache]: Analyzing trace with hash -998913575, now seen corresponding path program 17 times [2023-12-09 15:24:47,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:47,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276161006] [2023-12-09 15:24:47,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:47,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276161006] [2023-12-09 15:24:47,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276161006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936340664] [2023-12-09 15:24:47,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:24:47,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:47,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:47,894 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) [2023-12-09 15:24:47,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-09 15:24:47,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:24:47,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:47,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:24:47,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:48,319 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:48,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936340664] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:48,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:48,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-12-09 15:24:48,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129709065] [2023-12-09 15:24:48,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:48,644 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-09 15:24:48,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:48,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-09 15:24:48,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2023-12-09 15:24:48,646 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:24:48,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1342 places, 3244 transitions, 146979 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:48,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:48,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:24:48,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:56,327 INFO L124 PetriNetUnfolderBase]: 1714/6432 cut-off events. [2023-12-09 15:24:56,327 INFO L125 PetriNetUnfolderBase]: For 176686/179015 co-relation queries the response was YES. [2023-12-09 15:24:56,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111905 conditions, 6432 events. 1714/6432 cut-off events. For 176686/179015 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 72294 event pairs, 6 based on Foata normal form. 78/5944 useless extension candidates. Maximal degree in co-relation 82448. Up to 4065 conditions per place. [2023-12-09 15:24:56,399 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1362 selfloop transitions, 1228 changer transitions 829/3457 dead transitions. [2023-12-09 15:24:56,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1473 places, 3457 transitions, 163492 flow [2023-12-09 15:24:56,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2023-12-09 15:24:56,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2023-12-09 15:24:56,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 6781 transitions. [2023-12-09 15:24:56,416 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5645188145188145 [2023-12-09 15:24:56,416 INFO L72 ComplementDD]: Start complementDD. Operand 132 states and 6781 transitions. [2023-12-09 15:24:56,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 6781 transitions. [2023-12-09 15:24:56,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:56,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 132 states and 6781 transitions. [2023-12-09 15:24:56,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 133 states, 132 states have (on average 51.371212121212125) internal successors, (6781), 132 states have internal predecessors, (6781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:56,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 133 states, 133 states have (on average 91.0) internal successors, (12103), 133 states have internal predecessors, (12103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:56,428 INFO L81 ComplementDD]: Finished complementDD. Result has 133 states, 133 states have (on average 91.0) internal successors, (12103), 133 states have internal predecessors, (12103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:56,429 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1392 predicate places. [2023-12-09 15:24:56,429 INFO L500 AbstractCegarLoop]: Abstraction has has 1473 places, 3457 transitions, 163492 flow [2023-12-09 15:24:56,429 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:56,429 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:56,429 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:56,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-09 15:24:56,634 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:56,634 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:24:56,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:56,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1365429493, now seen corresponding path program 18 times [2023-12-09 15:24:56,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:56,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367197645] [2023-12-09 15:24:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:56,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:56,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:56,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:56,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367197645] [2023-12-09 15:24:56,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367197645] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:56,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986063033] [2023-12-09 15:24:56,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:24:56,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:56,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:56,923 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) [2023-12-09 15:24:56,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-09 15:24:56,982 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-09 15:24:56,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:56,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:24:56,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:57,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:57,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:57,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986063033] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:57,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:57,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-12-09 15:24:57,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92163827] [2023-12-09 15:24:57,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:57,637 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-09 15:24:57,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-09 15:24:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1140, Unknown=0, NotChecked=0, Total=1332 [2023-12-09 15:24:57,639 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:24:57,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1473 places, 3457 transitions, 163492 flow. Second operand has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:24:57,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:57,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:24:57,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:25:05,719 INFO L124 PetriNetUnfolderBase]: 1760/6673 cut-off events. [2023-12-09 15:25:05,719 INFO L125 PetriNetUnfolderBase]: For 201006/203612 co-relation queries the response was YES. [2023-12-09 15:25:05,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120371 conditions, 6673 events. 1760/6673 cut-off events. For 201006/203612 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 75839 event pairs, 8 based on Foata normal form. 74/6165 useless extension candidates. Maximal degree in co-relation 88479. Up to 4208 conditions per place. [2023-12-09 15:25:05,796 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1479 selfloop transitions, 1195 changer transitions 866/3578 dead transitions. [2023-12-09 15:25:05,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1574 places, 3578 transitions, 176389 flow [2023-12-09 15:25:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-12-09 15:25:05,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-12-09 15:25:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 5237 transitions. [2023-12-09 15:25:05,800 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5642102995044171 [2023-12-09 15:25:05,800 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 5237 transitions. [2023-12-09 15:25:05,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 5237 transitions. [2023-12-09 15:25:05,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:25:05,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 5237 transitions. [2023-12-09 15:25:05,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 51.34313725490196) internal successors, (5237), 102 states have internal predecessors, (5237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:05,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 91.0) internal successors, (9373), 103 states have internal predecessors, (9373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:05,808 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 91.0) internal successors, (9373), 103 states have internal predecessors, (9373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:05,809 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1493 predicate places. [2023-12-09 15:25:05,809 INFO L500 AbstractCegarLoop]: Abstraction has has 1574 places, 3578 transitions, 176389 flow [2023-12-09 15:25:05,809 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.945945945945944) internal successors, (1848), 37 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) [2023-12-09 15:25:05,809 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:25:05,809 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:25:05,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-09 15:25:06,013 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:25:06,014 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:25:06,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:25:06,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2037798337, now seen corresponding path program 19 times [2023-12-09 15:25:06,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:25:06,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697062243] [2023-12-09 15:25:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:25:06,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:25:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:25:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:06,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:25:06,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697062243] [2023-12-09 15:25:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697062243] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:25:06,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940577815] [2023-12-09 15:25:06,257 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:25:06,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:25:06,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:25:06,259 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) [2023-12-09 15:25:06,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-09 15:25:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:25:06,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:25:06,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:25:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:06,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:25:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:07,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940577815] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:25:07,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:25:07,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 37 [2023-12-09 15:25:07,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757078466] [2023-12-09 15:25:07,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:25:07,016 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-09 15:25:07,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:25:07,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-09 15:25:07,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=1130, Unknown=0, NotChecked=0, Total=1332 [2023-12-09 15:25:07,017 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:25:07,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1574 places, 3578 transitions, 176389 flow. Second operand has 37 states, 37 states have (on average 49.91891891891892) internal successors, (1847), 37 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:07,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:25:07,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:25:07,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:25:16,226 INFO L124 PetriNetUnfolderBase]: 2045/7416 cut-off events. [2023-12-09 15:25:16,226 INFO L125 PetriNetUnfolderBase]: For 233960/236640 co-relation queries the response was YES. [2023-12-09 15:25:16,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140074 conditions, 7416 events. 2045/7416 cut-off events. For 233960/236640 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 84108 event pairs, 4 based on Foata normal form. 97/6875 useless extension candidates. Maximal degree in co-relation 104630. Up to 4745 conditions per place. [2023-12-09 15:25:16,494 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 1622 selfloop transitions, 1430 changer transitions 896/3986 dead transitions. [2023-12-09 15:25:16,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1665 places, 3986 transitions, 204526 flow [2023-12-09 15:25:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-09 15:25:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2023-12-09 15:25:16,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 4892 transitions. [2023-12-09 15:25:16,497 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5780456103036749 [2023-12-09 15:25:16,498 INFO L72 ComplementDD]: Start complementDD. Operand 93 states and 4892 transitions. [2023-12-09 15:25:16,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 4892 transitions. [2023-12-09 15:25:16,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:25:16,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 93 states and 4892 transitions. [2023-12-09 15:25:16,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 94 states, 93 states have (on average 52.60215053763441) internal successors, (4892), 93 states have internal predecessors, (4892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:16,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 94 states, 94 states have (on average 91.0) internal successors, (8554), 94 states have internal predecessors, (8554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:16,505 INFO L81 ComplementDD]: Finished complementDD. Result has 94 states, 94 states have (on average 91.0) internal successors, (8554), 94 states have internal predecessors, (8554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:16,506 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1584 predicate places. [2023-12-09 15:25:16,506 INFO L500 AbstractCegarLoop]: Abstraction has has 1665 places, 3986 transitions, 204526 flow [2023-12-09 15:25:16,506 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 49.91891891891892) internal successors, (1847), 37 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:16,506 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:25:16,507 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:25:16,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-09 15:25:16,710 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:25:16,711 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:25:16,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:25:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash -296501615, now seen corresponding path program 20 times [2023-12-09 15:25:16,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:25:16,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242095002] [2023-12-09 15:25:16,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:25:16,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:25:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:25:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:16,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:25:16,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242095002] [2023-12-09 15:25:16,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242095002] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:25:16,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422652565] [2023-12-09 15:25:16,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:25:16,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:25:16,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:25:16,993 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:25:16,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-09 15:25:17,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:25:17,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:25:17,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-09 15:25:17,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:25:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:17,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:25:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:17,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422652565] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:25:17,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:25:17,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-12-09 15:25:17,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072266492] [2023-12-09 15:25:17,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:25:17,929 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-09 15:25:17,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:25:17,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-09 15:25:17,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1849, Unknown=0, NotChecked=0, Total=2070 [2023-12-09 15:25:17,931 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:25:17,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1665 places, 3986 transitions, 204526 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:17,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:25:17,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:25:17,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:25:29,140 INFO L124 PetriNetUnfolderBase]: 2271/8074 cut-off events. [2023-12-09 15:25:29,140 INFO L125 PetriNetUnfolderBase]: For 268223/271079 co-relation queries the response was YES. [2023-12-09 15:25:29,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159948 conditions, 8074 events. 2271/8074 cut-off events. For 268223/271079 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 91748 event pairs, 13 based on Foata normal form. 103/7470 useless extension candidates. Maximal degree in co-relation 121027. Up to 5251 conditions per place. [2023-12-09 15:25:29,252 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 1829 selfloop transitions, 1526 changer transitions 961/4354 dead transitions. [2023-12-09 15:25:29,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1762 places, 4354 transitions, 232174 flow [2023-12-09 15:25:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-09 15:25:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2023-12-09 15:25:29,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 5109 transitions. [2023-12-09 15:25:29,255 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5728862973760933 [2023-12-09 15:25:29,255 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 5109 transitions. [2023-12-09 15:25:29,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 5109 transitions. [2023-12-09 15:25:29,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:25:29,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 5109 transitions. [2023-12-09 15:25:29,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 52.13265306122449) internal successors, (5109), 98 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:29,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 91.0) internal successors, (9009), 99 states have internal predecessors, (9009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:29,264 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 91.0) internal successors, (9009), 99 states have internal predecessors, (9009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:29,265 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1681 predicate places. [2023-12-09 15:25:29,265 INFO L500 AbstractCegarLoop]: Abstraction has has 1762 places, 4354 transitions, 232174 flow [2023-12-09 15:25:29,265 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:29,265 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:25:29,265 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:25:29,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-09 15:25:29,469 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-09 15:25:29,469 INFO L425 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:25:29,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:25:29,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1976275819, now seen corresponding path program 21 times [2023-12-09 15:25:29,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:25:29,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4977789] [2023-12-09 15:25:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:25:29,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:25:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:25:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:29,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:25:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4977789] [2023-12-09 15:25:29,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4977789] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:25:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568239980] [2023-12-09 15:25:29,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:25:29,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:25:29,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:25:29,887 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:25:29,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-09 15:25:29,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:25:29,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:25:29,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-09 15:25:29,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:25:30,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:30,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:25:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:30,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568239980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:25:30,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:25:30,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-12-09 15:25:30,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483938177] [2023-12-09 15:25:30,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:25:30,970 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-09 15:25:30,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:25:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-09 15:25:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1844, Unknown=0, NotChecked=0, Total=2070 [2023-12-09 15:25:30,972 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:25:30,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1762 places, 4354 transitions, 232174 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:30,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:25:30,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:25:30,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:25:47,268 INFO L124 PetriNetUnfolderBase]: 2448/8928 cut-off events. [2023-12-09 15:25:47,268 INFO L125 PetriNetUnfolderBase]: For 325441/328723 co-relation queries the response was YES. [2023-12-09 15:25:47,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181400 conditions, 8928 events. 2448/8928 cut-off events. For 325441/328723 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 104350 event pairs, 11 based on Foata normal form. 85/8241 useless extension candidates. Maximal degree in co-relation 133994. Up to 5765 conditions per place. [2023-12-09 15:25:47,381 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 2073 selfloop transitions, 1634 changer transitions 1035/4780 dead transitions. [2023-12-09 15:25:47,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1900 places, 4780 transitions, 264689 flow [2023-12-09 15:25:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-12-09 15:25:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2023-12-09 15:25:47,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 7278 transitions. [2023-12-09 15:25:47,385 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5753814530792948 [2023-12-09 15:25:47,385 INFO L72 ComplementDD]: Start complementDD. Operand 139 states and 7278 transitions. [2023-12-09 15:25:47,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 7278 transitions. [2023-12-09 15:25:47,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:25:47,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 139 states and 7278 transitions. [2023-12-09 15:25:47,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 140 states, 139 states have (on average 52.35971223021583) internal successors, (7278), 139 states have internal predecessors, (7278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:47,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 140 states, 140 states have (on average 91.0) internal successors, (12740), 140 states have internal predecessors, (12740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:47,397 INFO L81 ComplementDD]: Finished complementDD. Result has 140 states, 140 states have (on average 91.0) internal successors, (12740), 140 states have internal predecessors, (12740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:47,397 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1819 predicate places. [2023-12-09 15:25:47,397 INFO L500 AbstractCegarLoop]: Abstraction has has 1900 places, 4780 transitions, 264689 flow [2023-12-09 15:25:47,398 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:47,398 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:25:47,398 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:25:47,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-09 15:25:47,603 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-12-09 15:25:47,603 INFO L425 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:25:47,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:25:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1466037585, now seen corresponding path program 22 times [2023-12-09 15:25:47,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:25:47,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372038255] [2023-12-09 15:25:47,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:25:47,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:25:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:25:47,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:47,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:25:47,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372038255] [2023-12-09 15:25:47,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372038255] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:25:47,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073255849] [2023-12-09 15:25:47,925 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:25:47,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:25:47,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:25:47,926 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:25:47,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-09 15:25:48,002 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:25:48,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:25:48,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-09 15:25:48,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:25:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:48,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:25:48,900 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:48,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073255849] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:25:48,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:25:48,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-12-09 15:25:48,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976279094] [2023-12-09 15:25:48,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:25:48,901 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-09 15:25:48,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:25:48,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-09 15:25:48,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=1831, Unknown=0, NotChecked=0, Total=2070 [2023-12-09 15:25:48,903 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:25:48,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1900 places, 4780 transitions, 264689 flow. Second operand has 46 states, 46 states have (on average 49.91304347826087) internal successors, (2296), 46 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:48,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:25:48,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:25:48,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:26:07,685 INFO L124 PetriNetUnfolderBase]: 2482/9135 cut-off events. [2023-12-09 15:26:07,686 INFO L125 PetriNetUnfolderBase]: For 362979/366824 co-relation queries the response was YES. [2023-12-09 15:26:07,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192166 conditions, 9135 events. 2482/9135 cut-off events. For 362979/366824 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 107385 event pairs, 11 based on Foata normal form. 95/8445 useless extension candidates. Maximal degree in co-relation 139914. Up to 5905 conditions per place. [2023-12-09 15:26:07,826 INFO L140 encePairwiseOnDemand]: 65/91 looper letters, 2060 selfloop transitions, 1711 changer transitions 1068/4877 dead transitions. [2023-12-09 15:26:07,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2024 places, 4877 transitions, 279877 flow [2023-12-09 15:26:07,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-12-09 15:26:07,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2023-12-09 15:26:07,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 6533 transitions. [2023-12-09 15:26:07,830 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5743296703296703 [2023-12-09 15:26:07,830 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 6533 transitions. [2023-12-09 15:26:07,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 6533 transitions. [2023-12-09 15:26:07,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:26:07,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 6533 transitions. [2023-12-09 15:26:07,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 52.264) internal successors, (6533), 125 states have internal predecessors, (6533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:07,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 91.0) internal successors, (11466), 126 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:07,843 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 91.0) internal successors, (11466), 126 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:07,843 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 1943 predicate places. [2023-12-09 15:26:07,843 INFO L500 AbstractCegarLoop]: Abstraction has has 2024 places, 4877 transitions, 279877 flow [2023-12-09 15:26:07,844 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.91304347826087) internal successors, (2296), 46 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:07,844 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:26:07,844 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:26:07,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-09 15:26:08,049 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-09 15:26:08,049 INFO L425 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:26:08,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:26:08,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1642765939, now seen corresponding path program 23 times [2023-12-09 15:26:08,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:26:08,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918139176] [2023-12-09 15:26:08,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:26:08,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:26:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:26:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:26:08,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:26:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918139176] [2023-12-09 15:26:08,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918139176] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:26:08,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778251992] [2023-12-09 15:26:08,392 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:26:08,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:26:08,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:26:08,394 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:26:08,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-09 15:26:08,476 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:26:08,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:26:08,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-09 15:26:08,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:26:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:26:08,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:26:09,386 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:26:09,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778251992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:26:09,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:26:09,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2023-12-09 15:26:09,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506870972] [2023-12-09 15:26:09,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:26:09,387 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-09 15:26:09,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:26:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-09 15:26:09,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1779, Unknown=0, NotChecked=0, Total=1980 [2023-12-09 15:26:09,389 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:26:09,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2024 places, 4877 transitions, 279877 flow. Second operand has 45 states, 45 states have (on average 49.888888888888886) internal successors, (2245), 45 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:09,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:26:09,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:26:09,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:26:31,927 INFO L124 PetriNetUnfolderBase]: 2588/9708 cut-off events. [2023-12-09 15:26:31,927 INFO L125 PetriNetUnfolderBase]: For 424722/429172 co-relation queries the response was YES. [2023-12-09 15:26:31,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210657 conditions, 9708 events. 2588/9708 cut-off events. For 424722/429172 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 116318 event pairs, 12 based on Foata normal form. 104/8987 useless extension candidates. Maximal degree in co-relation 150152. Up to 6274 conditions per place. [2023-12-09 15:26:32,090 INFO L140 encePairwiseOnDemand]: 63/91 looper letters, 2135 selfloop transitions, 1831 changer transitions 1184/5188 dead transitions. [2023-12-09 15:26:32,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2174 places, 5188 transitions, 308362 flow [2023-12-09 15:26:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2023-12-09 15:26:32,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2023-12-09 15:26:32,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 7891 transitions. [2023-12-09 15:26:32,095 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5742667928098392 [2023-12-09 15:26:32,095 INFO L72 ComplementDD]: Start complementDD. Operand 151 states and 7891 transitions. [2023-12-09 15:26:32,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 7891 transitions. [2023-12-09 15:26:32,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:26:32,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 151 states and 7891 transitions. [2023-12-09 15:26:32,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 152 states, 151 states have (on average 52.258278145695364) internal successors, (7891), 151 states have internal predecessors, (7891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:32,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 152 states, 152 states have (on average 91.0) internal successors, (13832), 152 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:32,112 INFO L81 ComplementDD]: Finished complementDD. Result has 152 states, 152 states have (on average 91.0) internal successors, (13832), 152 states have internal predecessors, (13832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:32,114 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 2093 predicate places. [2023-12-09 15:26:32,114 INFO L500 AbstractCegarLoop]: Abstraction has has 2174 places, 5188 transitions, 308362 flow [2023-12-09 15:26:32,114 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 49.888888888888886) internal successors, (2245), 45 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:32,114 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:26:32,114 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:26:32,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-09 15:26:32,319 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:26:32,319 INFO L425 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:26:32,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:26:32,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1688963545, now seen corresponding path program 24 times [2023-12-09 15:26:32,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:26:32,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118238717] [2023-12-09 15:26:32,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:26:32,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:26:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:26:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:26:32,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:26:32,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118238717] [2023-12-09 15:26:32,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118238717] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:26:32,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592356961] [2023-12-09 15:26:32,578 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:26:32,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:26:32,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:26:32,579 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:26:32,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-09 15:26:32,659 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:26:32,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:26:32,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-09 15:26:32,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:26:33,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:26:33,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:26:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:26:33,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592356961] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:26:33,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:26:33,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-12-09 15:26:33,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028605287] [2023-12-09 15:26:33,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:26:33,492 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-09 15:26:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:26:33,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-09 15:26:33,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1860, Unknown=0, NotChecked=0, Total=2070 [2023-12-09 15:26:33,495 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:26:33,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2174 places, 5188 transitions, 308362 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:33,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:26:33,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:26:33,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:26:59,521 INFO L124 PetriNetUnfolderBase]: 3150/11619 cut-off events. [2023-12-09 15:26:59,521 INFO L125 PetriNetUnfolderBase]: For 537306/542670 co-relation queries the response was YES. [2023-12-09 15:26:59,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260662 conditions, 11619 events. 3150/11619 cut-off events. For 537306/542670 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 142664 event pairs, 16 based on Foata normal form. 80/10683 useless extension candidates. Maximal degree in co-relation 187873. Up to 7575 conditions per place. [2023-12-09 15:26:59,786 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 2576 selfloop transitions, 2269 changer transitions 1281/6164 dead transitions. [2023-12-09 15:26:59,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2326 places, 6164 transitions, 379006 flow [2023-12-09 15:26:59,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2023-12-09 15:26:59,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2023-12-09 15:26:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 7947 transitions. [2023-12-09 15:26:59,790 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5707821590174531 [2023-12-09 15:26:59,790 INFO L72 ComplementDD]: Start complementDD. Operand 153 states and 7947 transitions. [2023-12-09 15:26:59,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 153 states and 7947 transitions. [2023-12-09 15:26:59,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:26:59,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 153 states and 7947 transitions. [2023-12-09 15:26:59,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 154 states, 153 states have (on average 51.94117647058823) internal successors, (7947), 153 states have internal predecessors, (7947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:59,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 154 states, 154 states have (on average 91.0) internal successors, (14014), 154 states have internal predecessors, (14014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:59,803 INFO L81 ComplementDD]: Finished complementDD. Result has 154 states, 154 states have (on average 91.0) internal successors, (14014), 154 states have internal predecessors, (14014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:59,803 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 2245 predicate places. [2023-12-09 15:26:59,803 INFO L500 AbstractCegarLoop]: Abstraction has has 2326 places, 6164 transitions, 379006 flow [2023-12-09 15:26:59,803 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:59,804 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:26:59,804 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:26:59,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-09 15:27:00,008 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:00,008 INFO L425 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:27:00,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1686863149, now seen corresponding path program 25 times [2023-12-09 15:27:00,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:00,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733610847] [2023-12-09 15:27:00,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:00,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:00,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733610847] [2023-12-09 15:27:00,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733610847] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:00,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784717217] [2023-12-09 15:27:00,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:27:00,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:00,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:00,244 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:27:00,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-09 15:27:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:00,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-09 15:27:00,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:27:00,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:00,779 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:27:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:01,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784717217] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:27:01,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:27:01,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-12-09 15:27:01,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407204440] [2023-12-09 15:27:01,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:27:01,189 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-09 15:27:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-09 15:27:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1848, Unknown=0, NotChecked=0, Total=2070 [2023-12-09 15:27:01,191 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:27:01,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2326 places, 6164 transitions, 379006 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:01,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:01,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:27:01,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:35,224 INFO L124 PetriNetUnfolderBase]: 3224/11957 cut-off events. [2023-12-09 15:27:35,224 INFO L125 PetriNetUnfolderBase]: For 591271/597229 co-relation queries the response was YES. [2023-12-09 15:27:35,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276945 conditions, 11957 events. 3224/11957 cut-off events. For 591271/597229 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 148042 event pairs, 12 based on Foata normal form. 68/10979 useless extension candidates. Maximal degree in co-relation 199178. Up to 7810 conditions per place. [2023-12-09 15:27:35,410 INFO L140 encePairwiseOnDemand]: 64/91 looper letters, 2829 selfloop transitions, 2155 changer transitions 1323/6345 dead transitions. [2023-12-09 15:27:35,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2450 places, 6345 transitions, 402875 flow [2023-12-09 15:27:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-12-09 15:27:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2023-12-09 15:27:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 6479 transitions. [2023-12-09 15:27:35,414 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5695824175824176 [2023-12-09 15:27:35,414 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 6479 transitions. [2023-12-09 15:27:35,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 6479 transitions. [2023-12-09 15:27:35,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:35,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 6479 transitions. [2023-12-09 15:27:35,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 51.832) internal successors, (6479), 125 states have internal predecessors, (6479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:35,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 91.0) internal successors, (11466), 126 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:35,428 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 91.0) internal successors, (11466), 126 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:35,429 INFO L308 CegarLoopForPetriNet]: 81 programPoint places, 2369 predicate places. [2023-12-09 15:27:35,429 INFO L500 AbstractCegarLoop]: Abstraction has has 2450 places, 6345 transitions, 402875 flow [2023-12-09 15:27:35,429 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:35,429 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:35,429 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:27:35,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-12-09 15:27:35,634 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-12-09 15:27:35,635 INFO L425 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:27:35,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:35,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1482593263, now seen corresponding path program 26 times [2023-12-09 15:27:35,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:35,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236510480] [2023-12-09 15:27:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:35,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:35,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:35,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236510480] [2023-12-09 15:27:35,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236510480] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:35,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951134920] [2023-12-09 15:27:35,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:27:35,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:35,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:35,936 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:27:35,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-09 15:27:36,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:27:36,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:27:36,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-09 15:27:36,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:27:36,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:36,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:27:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:36,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951134920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:27:36,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:27:36,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 46 [2023-12-09 15:27:36,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107005376] [2023-12-09 15:27:36,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:27:36,960 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-09 15:27:36,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:36,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-09 15:27:36,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2023-12-09 15:27:36,962 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 91 [2023-12-09 15:27:36,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2450 places, 6345 transitions, 402875 flow. Second operand has 46 states, 46 states have (on average 49.891304347826086) internal successors, (2295), 46 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:36,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:36,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 91 [2023-12-09 15:27:36,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:27:47,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-12-09 15:27:47,308 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:27:47,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-09 15:27:47,328 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:27:47,344 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:27:47,512 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-09 15:27:47,512 WARN L624 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 167 known predicates. [2023-12-09 15:27:47,514 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:27:47,514 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:27:47,514 INFO L457 BasicCegarLoop]: Path program histogram: [26, 6] [2023-12-09 15:27:47,517 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:27:47,517 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:27:47,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:27:47 BasicIcfg [2023-12-09 15:27:47,520 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:27:47,520 INFO L158 Benchmark]: Toolchain (without parser) took 264683.71ms. Allocated memory was 177.2MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 142.1MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 821.0MB. Max. memory is 8.0GB. [2023-12-09 15:27:47,520 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 177.2MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:27:47,520 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.48ms. Allocated memory is still 177.2MB. Free memory was 142.1MB in the beginning and 130.8MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:27:47,521 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.55ms. Allocated memory is still 177.2MB. Free memory was 130.8MB in the beginning and 129.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:27:47,521 INFO L158 Benchmark]: Boogie Preprocessor took 28.87ms. Allocated memory is still 177.2MB. Free memory was 129.3MB in the beginning and 127.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:27:47,522 INFO L158 Benchmark]: RCFGBuilder took 365.75ms. Allocated memory is still 177.2MB. Free memory was 127.8MB in the beginning and 112.8MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-12-09 15:27:47,522 INFO L158 Benchmark]: TraceAbstraction took 264057.60ms. Allocated memory was 177.2MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 112.1MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 790.6MB. Max. memory is 8.0GB. [2023-12-09 15:27:47,523 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 177.2MB. Free memory is still 135.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.48ms. Allocated memory is still 177.2MB. Free memory was 142.1MB in the beginning and 130.8MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.55ms. Allocated memory is still 177.2MB. Free memory was 130.8MB in the beginning and 129.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.87ms. Allocated memory is still 177.2MB. Free memory was 129.3MB in the beginning and 127.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 365.75ms. Allocated memory is still 177.2MB. Free memory was 127.8MB in the beginning and 112.8MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 264057.60ms. Allocated memory was 177.2MB in the beginning and 2.6GB in the end (delta: 2.4GB). Free memory was 112.1MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 790.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 167 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 167 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 167 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 110 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: 264.0s, OverallIterations: 32, TraceHistogramMax: 2, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.0s, AutomataDifference: 227.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13095 SdHoareTripleChecker+Valid, 18.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13095 mSDsluCounter, 22578 SdHoareTripleChecker+Invalid, 15.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20797 mSDsCounter, 2313 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 47880 IncrementalHoareTripleChecker+Invalid, 50193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2313 mSolverCounterUnsat, 1781 mSDtfsCounter, 47880 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6149 GetRequests, 3097 SyntacticMatches, 0 SemanticMatches, 3051 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130257 ImplicationChecksByTransitivity, 54.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=402875occurred in iteration=31, InterpolantAutomatonStates: 2401, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 28.3s InterpolantComputationTime, 4042 NumberOfCodeBlocks, 4018 NumberOfCodeBlocksAsserted, 78 NumberOfCheckSat, 5787 ConstructedInterpolants, 0 QuantifiedInterpolants, 46666 SizeOfPredicates, 326 NumberOfNonLiveVariables, 4292 ConjunctsInSsa, 614 ConjunctsInUnsatCore, 84 InterpolantComputations, 6 PerfectInterpolantSequences, 0/204 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