/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 23:12:46,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 23:12:46,979 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 23:12:47,009 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 23:12:47,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 23:12:47,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 23:12:47,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 23:12:47,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 23:12:47,011 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 23:12:47,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 23:12:47,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 23:12:47,016 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 23:12:47,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 23:12:47,017 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 23:12:47,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 23:12:47,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 23:12:47,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 23:12:47,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 23:12:47,018 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 23:12:47,018 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 23:12:47,018 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 23:12:47,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 23:12:47,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 23:12:47,019 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 23:12:47,019 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 23:12:47,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:12:47,021 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 23:12:47,021 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 23:12:47,021 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 23:12:47,021 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 23:12:47,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 23:12:47,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 23:12:47,022 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 23:12:47,023 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 23:12:47,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 23:12:47,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 23:12:47,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 23:12:47,290 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 23:12:47,291 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 23:12:47,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-11-29 23:12:48,487 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 23:12:48,659 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 23:12:48,660 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-11-29 23:12:48,666 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15623651/186314522b3d47c3b897f1a8f4a04e0c/FLAG2dc44e89e [2023-11-29 23:12:48,676 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a15623651/186314522b3d47c3b897f1a8f4a04e0c [2023-11-29 23:12:48,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 23:12:48,679 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 23:12:48,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 23:12:48,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 23:12:48,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 23:12:48,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:48,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79648f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48, skipping insertion in model container [2023-11-29 23:12:48,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:48,719 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 23:12:48,915 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-threaded-sum-3.wvr.c[2996,3009] [2023-11-29 23:12:48,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:12:48,931 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 23:12:48,950 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-threaded-sum-3.wvr.c[2996,3009] [2023-11-29 23:12:48,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:12:48,957 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 23:12:48,957 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 23:12:48,964 INFO L206 MainTranslator]: Completed translation [2023-11-29 23:12:48,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48 WrapperNode [2023-11-29 23:12:48,964 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 23:12:48,965 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 23:12:48,965 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 23:12:48,965 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 23:12:48,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:48,977 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:48,994 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-11-29 23:12:48,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 23:12:48,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 23:12:49,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 23:12:49,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 23:12:49,008 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:49,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:49,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:49,012 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:49,017 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:49,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:49,022 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:49,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:49,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 23:12:49,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 23:12:49,027 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 23:12:49,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 23:12:49,028 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (1/1) ... [2023-11-29 23:12:49,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:12:49,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:12:49,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 23:12:49,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 23:12:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 23:12:49,082 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 23:12:49,082 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 23:12:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 23:12:49,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 23:12:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 23:12:49,083 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 23:12:49,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 23:12:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 23:12:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 23:12:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 23:12:49,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 23:12:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 23:12:49,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 23:12:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 23:12:49,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 23:12:49,086 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 23:12:49,173 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 23:12:49,175 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 23:12:49,364 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 23:12:49,435 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 23:12:49,435 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 23:12:49,437 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:12:49 BoogieIcfgContainer [2023-11-29 23:12:49,437 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 23:12:49,439 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 23:12:49,439 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 23:12:49,441 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 23:12:49,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:12:48" (1/3) ... [2023-11-29 23:12:49,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f84389c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:12:49, skipping insertion in model container [2023-11-29 23:12:49,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:12:48" (2/3) ... [2023-11-29 23:12:49,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f84389c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:12:49, skipping insertion in model container [2023-11-29 23:12:49,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:12:49" (3/3) ... [2023-11-29 23:12:49,443 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2023-11-29 23:12:49,458 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 23:12:49,458 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 23:12:49,459 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 23:12:49,529 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 23:12:49,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 117 transitions, 255 flow [2023-11-29 23:12:49,654 INFO L124 PetriNetUnfolderBase]: 8/114 cut-off events. [2023-11-29 23:12:49,655 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 23:12:49,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 8/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 76. Up to 2 conditions per place. [2023-11-29 23:12:49,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 117 transitions, 255 flow [2023-11-29 23:12:49,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 103 transitions, 224 flow [2023-11-29 23:12:49,672 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 23:12:49,678 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;@10874507, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 23:12:49,678 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 23:12:49,710 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 23:12:49,710 INFO L124 PetriNetUnfolderBase]: 8/102 cut-off events. [2023-11-29 23:12:49,710 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 23:12:49,710 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:12:49,711 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:12:49,711 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 23:12:49,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:12:49,722 INFO L85 PathProgramCache]: Analyzing trace with hash -81987652, now seen corresponding path program 1 times [2023-11-29 23:12:49,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:12:49,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352998853] [2023-11-29 23:12:49,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:12:49,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:12:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:12:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:51,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:12:51,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352998853] [2023-11-29 23:12:51,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352998853] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:12:51,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:12:51,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 23:12:51,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021541086] [2023-11-29 23:12:51,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:12:51,072 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 23:12:51,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:12:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 23:12:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-29 23:12:51,107 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 117 [2023-11-29 23:12:51,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 103 transitions, 224 flow. Second operand has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:51,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:12:51,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 117 [2023-11-29 23:12:51,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:12:51,457 INFO L124 PetriNetUnfolderBase]: 266/645 cut-off events. [2023-11-29 23:12:51,458 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-29 23:12:51,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 645 events. 266/645 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3004 event pairs, 80 based on Foata normal form. 85/673 useless extension candidates. Maximal degree in co-relation 936. Up to 195 conditions per place. [2023-11-29 23:12:51,465 INFO L140 encePairwiseOnDemand]: 100/117 looper letters, 54 selfloop transitions, 12 changer transitions 2/124 dead transitions. [2023-11-29 23:12:51,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 124 transitions, 408 flow [2023-11-29 23:12:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 23:12:51,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 23:12:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 635 transitions. [2023-11-29 23:12:51,483 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6784188034188035 [2023-11-29 23:12:51,483 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 635 transitions. [2023-11-29 23:12:51,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 635 transitions. [2023-11-29 23:12:51,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:12:51,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 635 transitions. [2023-11-29 23:12:51,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:51,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:51,498 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:51,503 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 7 predicate places. [2023-11-29 23:12:51,504 INFO L500 AbstractCegarLoop]: Abstraction has has 112 places, 124 transitions, 408 flow [2023-11-29 23:12:51,504 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:51,504 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:12:51,505 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:12:51,505 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 23:12:51,506 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 23:12:51,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:12:51,507 INFO L85 PathProgramCache]: Analyzing trace with hash 422968823, now seen corresponding path program 1 times [2023-11-29 23:12:51,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:12:51,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20422684] [2023-11-29 23:12:51,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:12:51,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:12:51,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:12:51,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:51,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:12:51,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20422684] [2023-11-29 23:12:51,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20422684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:12:51,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:12:51,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:12:51,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277278787] [2023-11-29 23:12:51,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:12:51,933 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:12:51,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:12:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:12:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:12:51,935 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 117 [2023-11-29 23:12:51,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 124 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:51,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:12:51,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 117 [2023-11-29 23:12:51,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:12:52,319 INFO L124 PetriNetUnfolderBase]: 675/1490 cut-off events. [2023-11-29 23:12:52,320 INFO L125 PetriNetUnfolderBase]: For 499/633 co-relation queries the response was YES. [2023-11-29 23:12:52,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 1490 events. 675/1490 cut-off events. For 499/633 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8520 event pairs, 85 based on Foata normal form. 0/1316 useless extension candidates. Maximal degree in co-relation 3060. Up to 594 conditions per place. [2023-11-29 23:12:52,335 INFO L140 encePairwiseOnDemand]: 108/117 looper letters, 105 selfloop transitions, 36 changer transitions 2/215 dead transitions. [2023-11-29 23:12:52,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 215 transitions, 1083 flow [2023-11-29 23:12:52,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 23:12:52,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 23:12:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 685 transitions. [2023-11-29 23:12:52,337 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8363858363858364 [2023-11-29 23:12:52,337 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 685 transitions. [2023-11-29 23:12:52,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 685 transitions. [2023-11-29 23:12:52,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:12:52,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 685 transitions. [2023-11-29 23:12:52,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 97.85714285714286) internal successors, (685), 7 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:52,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:52,343 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 117.0) internal successors, (936), 8 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:52,343 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 13 predicate places. [2023-11-29 23:12:52,344 INFO L500 AbstractCegarLoop]: Abstraction has has 118 places, 215 transitions, 1083 flow [2023-11-29 23:12:52,344 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:52,344 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:12:52,345 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:12:52,345 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 23:12:52,346 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 23:12:52,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:12:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1899291033, now seen corresponding path program 2 times [2023-11-29 23:12:52,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:12:52,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607804770] [2023-11-29 23:12:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:12:52,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:12:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:12:52,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:52,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:12:52,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607804770] [2023-11-29 23:12:52,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607804770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:12:52,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:12:52,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:12:52,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017870296] [2023-11-29 23:12:52,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:12:52,755 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:12:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:12:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:12:52,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:12:52,761 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 117 [2023-11-29 23:12:52,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 215 transitions, 1083 flow. Second operand has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:52,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:12:52,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 117 [2023-11-29 23:12:52,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:12:53,257 INFO L124 PetriNetUnfolderBase]: 1235/2454 cut-off events. [2023-11-29 23:12:53,257 INFO L125 PetriNetUnfolderBase]: For 1729/2107 co-relation queries the response was YES. [2023-11-29 23:12:53,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7447 conditions, 2454 events. 1235/2454 cut-off events. For 1729/2107 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15087 event pairs, 134 based on Foata normal form. 20/2117 useless extension candidates. Maximal degree in co-relation 6443. Up to 991 conditions per place. [2023-11-29 23:12:53,281 INFO L140 encePairwiseOnDemand]: 107/117 looper letters, 148 selfloop transitions, 63 changer transitions 2/300 dead transitions. [2023-11-29 23:12:53,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 300 transitions, 2007 flow [2023-11-29 23:12:53,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 23:12:53,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 23:12:53,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 594 transitions. [2023-11-29 23:12:53,284 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2023-11-29 23:12:53,284 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 594 transitions. [2023-11-29 23:12:53,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 594 transitions. [2023-11-29 23:12:53,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:12:53,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 594 transitions. [2023-11-29 23:12:53,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:53,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:53,288 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 117.0) internal successors, (819), 7 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:53,289 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 18 predicate places. [2023-11-29 23:12:53,290 INFO L500 AbstractCegarLoop]: Abstraction has has 123 places, 300 transitions, 2007 flow [2023-11-29 23:12:53,290 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:53,291 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:12:53,291 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:12:53,291 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 23:12:53,291 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 23:12:53,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:12:53,292 INFO L85 PathProgramCache]: Analyzing trace with hash 926032885, now seen corresponding path program 3 times [2023-11-29 23:12:53,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:12:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854331866] [2023-11-29 23:12:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:12:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:12:53,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:12:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:53,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:12:53,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854331866] [2023-11-29 23:12:53,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854331866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:12:53,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373108743] [2023-11-29 23:12:53,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:12:53,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:12:53,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:12:53,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:12:53,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 23:12:53,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 23:12:53,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:12:53,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 23:12:53,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:12:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:12:53,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 23:12:53,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373108743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:12:53,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 23:12:53,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-29 23:12:53,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973362762] [2023-11-29 23:12:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:12:53,951 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 23:12:53,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:12:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 23:12:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-29 23:12:53,953 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 117 [2023-11-29 23:12:53,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 300 transitions, 2007 flow. Second operand has 7 states, 7 states have (on average 79.14285714285714) internal successors, (554), 7 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:53,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:12:53,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 117 [2023-11-29 23:12:53,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:12:54,430 INFO L124 PetriNetUnfolderBase]: 1427/2723 cut-off events. [2023-11-29 23:12:54,431 INFO L125 PetriNetUnfolderBase]: For 3703/4100 co-relation queries the response was YES. [2023-11-29 23:12:54,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10222 conditions, 2723 events. 1427/2723 cut-off events. For 3703/4100 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 16727 event pairs, 191 based on Foata normal form. 4/2353 useless extension candidates. Maximal degree in co-relation 8800. Up to 1297 conditions per place. [2023-11-29 23:12:54,458 INFO L140 encePairwiseOnDemand]: 106/117 looper letters, 208 selfloop transitions, 18 changer transitions 2/312 dead transitions. [2023-11-29 23:12:54,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 312 transitions, 2554 flow [2023-11-29 23:12:54,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 23:12:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 23:12:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 889 transitions. [2023-11-29 23:12:54,461 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6907536907536908 [2023-11-29 23:12:54,461 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 889 transitions. [2023-11-29 23:12:54,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 889 transitions. [2023-11-29 23:12:54,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:12:54,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 889 transitions. [2023-11-29 23:12:54,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 80.81818181818181) internal successors, (889), 11 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:54,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 117.0) internal successors, (1404), 12 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:54,465 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 117.0) internal successors, (1404), 12 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:54,466 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 28 predicate places. [2023-11-29 23:12:54,466 INFO L500 AbstractCegarLoop]: Abstraction has has 133 places, 312 transitions, 2554 flow [2023-11-29 23:12:54,467 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.14285714285714) internal successors, (554), 7 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:54,467 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:12:54,467 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:12:54,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 23:12:54,673 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:12:54,673 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 23:12:54,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:12:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash 435915461, now seen corresponding path program 4 times [2023-11-29 23:12:54,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:12:54,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36487495] [2023-11-29 23:12:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:12:54,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:12:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:12:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:55,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:12:55,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36487495] [2023-11-29 23:12:55,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36487495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:12:55,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:12:55,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 23:12:55,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693429573] [2023-11-29 23:12:55,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:12:55,105 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 23:12:55,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:12:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 23:12:55,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 23:12:55,107 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 117 [2023-11-29 23:12:55,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 312 transitions, 2554 flow. Second operand has 8 states, 8 states have (on average 71.625) internal successors, (573), 8 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:55,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:12:55,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 117 [2023-11-29 23:12:55,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:12:55,891 INFO L124 PetriNetUnfolderBase]: 2947/5442 cut-off events. [2023-11-29 23:12:55,891 INFO L125 PetriNetUnfolderBase]: For 10077/11236 co-relation queries the response was YES. [2023-11-29 23:12:55,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23976 conditions, 5442 events. 2947/5442 cut-off events. For 10077/11236 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36896 event pairs, 183 based on Foata normal form. 26/4805 useless extension candidates. Maximal degree in co-relation 23388. Up to 2611 conditions per place. [2023-11-29 23:12:55,940 INFO L140 encePairwiseOnDemand]: 108/117 looper letters, 458 selfloop transitions, 94 changer transitions 2/626 dead transitions. [2023-11-29 23:12:55,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 626 transitions, 6747 flow [2023-11-29 23:12:55,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 23:12:55,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 23:12:55,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 613 transitions. [2023-11-29 23:12:55,943 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6549145299145299 [2023-11-29 23:12:55,943 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 613 transitions. [2023-11-29 23:12:55,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 613 transitions. [2023-11-29 23:12:55,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:12:55,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 613 transitions. [2023-11-29 23:12:55,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 76.625) internal successors, (613), 8 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:55,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:55,946 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:55,947 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 35 predicate places. [2023-11-29 23:12:55,947 INFO L500 AbstractCegarLoop]: Abstraction has has 140 places, 626 transitions, 6747 flow [2023-11-29 23:12:55,947 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.625) internal successors, (573), 8 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:12:55,947 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:12:55,948 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:12:55,948 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 23:12:55,948 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 23:12:55,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:12:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1131366762, now seen corresponding path program 1 times [2023-11-29 23:12:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:12:55,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797953013] [2023-11-29 23:12:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:12:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:12:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:12:59,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:12:59,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:12:59,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797953013] [2023-11-29 23:12:59,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797953013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:12:59,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037332069] [2023-11-29 23:12:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:12:59,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:12:59,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:12:59,169 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:12:59,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 23:12:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:12:59,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 23:12:59,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:13:01,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:13:01,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:13:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:13:03,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037332069] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:13:03,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:13:03,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 22] total 46 [2023-11-29 23:13:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109101277] [2023-11-29 23:13:03,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:13:03,774 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 23:13:03,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:13:03,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 23:13:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1744, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 23:13:03,778 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 117 [2023-11-29 23:13:03,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 626 transitions, 6747 flow. Second operand has 46 states, 46 states have (on average 64.32608695652173) internal successors, (2959), 46 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:13:03,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:13:03,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 117 [2023-11-29 23:13:03,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:13:19,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 23:14:56,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 23:16:24,476 INFO L124 PetriNetUnfolderBase]: 35253/71488 cut-off events. [2023-11-29 23:16:24,476 INFO L125 PetriNetUnfolderBase]: For 188762/196025 co-relation queries the response was YES. [2023-11-29 23:16:24,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348688 conditions, 71488 events. 35253/71488 cut-off events. For 188762/196025 co-relation queries the response was YES. Maximal size of possible extension queue 3899. Compared 802334 event pairs, 457 based on Foata normal form. 513/62246 useless extension candidates. Maximal degree in co-relation 323431. Up to 32804 conditions per place. [2023-11-29 23:16:25,225 INFO L140 encePairwiseOnDemand]: 82/117 looper letters, 6333 selfloop transitions, 7455 changer transitions 1343/15180 dead transitions. [2023-11-29 23:16:25,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 15180 transitions, 194840 flow [2023-11-29 23:16:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 668 states. [2023-11-29 23:16:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 668 states. [2023-11-29 23:16:25,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 46135 transitions. [2023-11-29 23:16:25,292 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.590293771431496 [2023-11-29 23:16:25,293 INFO L72 ComplementDD]: Start complementDD. Operand 668 states and 46135 transitions. [2023-11-29 23:16:25,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 668 states and 46135 transitions. [2023-11-29 23:16:25,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:16:25,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 668 states and 46135 transitions. [2023-11-29 23:16:25,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 669 states, 668 states have (on average 69.06437125748504) internal successors, (46135), 668 states have internal predecessors, (46135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:25,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 669 states, 669 states have (on average 117.0) internal successors, (78273), 669 states have internal predecessors, (78273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:25,556 INFO L81 ComplementDD]: Finished complementDD. Result has 669 states, 669 states have (on average 117.0) internal successors, (78273), 669 states have internal predecessors, (78273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:25,559 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 702 predicate places. [2023-11-29 23:16:25,559 INFO L500 AbstractCegarLoop]: Abstraction has has 807 places, 15180 transitions, 194840 flow [2023-11-29 23:16:25,560 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 64.32608695652173) internal successors, (2959), 46 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:25,560 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:16:25,560 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:16:25,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 23:16:25,766 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 23:16:25,766 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 23:16:25,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:16:25,767 INFO L85 PathProgramCache]: Analyzing trace with hash 324153542, now seen corresponding path program 2 times [2023-11-29 23:16:25,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:16:25,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321136351] [2023-11-29 23:16:25,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:16:25,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:16:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:16:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:16:28,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:16:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321136351] [2023-11-29 23:16:28,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321136351] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:16:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486509983] [2023-11-29 23:16:28,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:16:28,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:16:28,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:16:28,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:16:28,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 23:16:28,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:16:28,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:16:28,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 23:16:28,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:16:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:16:30,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:16:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:16:32,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486509983] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:16:32,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:16:32,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 40 [2023-11-29 23:16:32,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759942960] [2023-11-29 23:16:32,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:16:32,979 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 23:16:32,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:16:32,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 23:16:32,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=1314, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 23:16:32,982 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 117 [2023-11-29 23:16:32,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 807 places, 15180 transitions, 194840 flow. Second operand has 40 states, 40 states have (on average 64.6) internal successors, (2584), 40 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:16:32,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:16:32,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 117 [2023-11-29 23:16:32,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:17:14,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 23:20:47,838 INFO L124 PetriNetUnfolderBase]: 72075/148843 cut-off events. [2023-11-29 23:20:47,838 INFO L125 PetriNetUnfolderBase]: For 460813/477729 co-relation queries the response was YES. [2023-11-29 23:20:48,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832803 conditions, 148843 events. 72075/148843 cut-off events. For 460813/477729 co-relation queries the response was YES. Maximal size of possible extension queue 8926. Compared 1874980 event pairs, 710 based on Foata normal form. 1802/129963 useless extension candidates. Maximal degree in co-relation 772132. Up to 71152 conditions per place. [2023-11-29 23:20:49,108 INFO L140 encePairwiseOnDemand]: 83/117 looper letters, 17884 selfloop transitions, 13231 changer transitions 7095/38259 dead transitions. [2023-11-29 23:20:49,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1062 places, 38259 transitions, 561110 flow [2023-11-29 23:20:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2023-11-29 23:20:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2023-11-29 23:20:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 17781 transitions. [2023-11-29 23:20:49,129 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5936498397435898 [2023-11-29 23:20:49,129 INFO L72 ComplementDD]: Start complementDD. Operand 256 states and 17781 transitions. [2023-11-29 23:20:49,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 256 states and 17781 transitions. [2023-11-29 23:20:49,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:20:49,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 256 states and 17781 transitions. [2023-11-29 23:20:49,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 257 states, 256 states have (on average 69.45703125) internal successors, (17781), 256 states have internal predecessors, (17781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:20:49,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 257 states, 257 states have (on average 117.0) internal successors, (30069), 257 states have internal predecessors, (30069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:20:49,185 INFO L81 ComplementDD]: Finished complementDD. Result has 257 states, 257 states have (on average 117.0) internal successors, (30069), 257 states have internal predecessors, (30069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:20:49,186 INFO L307 CegarLoopForPetriNet]: 105 programPoint places, 957 predicate places. [2023-11-29 23:20:49,186 INFO L500 AbstractCegarLoop]: Abstraction has has 1062 places, 38259 transitions, 561110 flow [2023-11-29 23:20:49,186 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 64.6) internal successors, (2584), 40 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:20:49,187 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:20:49,187 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:20:49,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 23:20:49,392 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:20:49,392 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 23:20:49,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:20:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash -963806118, now seen corresponding path program 3 times [2023-11-29 23:20:49,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:20:49,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299852864] [2023-11-29 23:20:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:20:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:20:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:20:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:20:51,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:20:51,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299852864] [2023-11-29 23:20:51,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299852864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:20:51,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787528009] [2023-11-29 23:20:51,424 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:20:51,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:20:51,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:20:51,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:20:51,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 23:20:51,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 23:20:51,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:20:51,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 23:20:51,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:20:52,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:20:52,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:20:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:20:55,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787528009] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:20:55,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:20:55,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 21] total 45 [2023-11-29 23:20:55,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609599071] [2023-11-29 23:20:55,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:20:55,557 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 23:20:55,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:20:55,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 23:20:55,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1629, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 23:20:55,560 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 117 [2023-11-29 23:20:55,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1062 places, 38259 transitions, 561110 flow. Second operand has 45 states, 45 states have (on average 66.33333333333333) internal successors, (2985), 45 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:20:55,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:20:55,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 117 [2023-11-29 23:20:55,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 23:26:31,338 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:26:31,338 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:26:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 342 states. [2023-11-29 23:26:31,394 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 23:26:31,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 23:26:31,596 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:26:31,598 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (45states, 64/117 universal loopers) in iteration 8,while PetriNetUnfolder was constructing finite prefix that currently has 268668 conditions, 37293 events (21478/37292 cut-off events. For 96660/101945 co-relation queries the response was YES. Maximal size of possible extension queue 8878. Compared 393588 event pairs, 85 based on Foata normal form. 431/39529 useless extension candidates. Maximal degree in co-relation 268461. Up to 18860 conditions per place.). [2023-11-29 23:26:31,600 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 23:26:31,600 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 23:26:31,600 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 23:26:31,600 INFO L457 BasicCegarLoop]: Path program histogram: [4, 3, 1] [2023-11-29 23:26:31,603 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 23:26:31,603 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 23:26:31,606 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:26:31 BasicIcfg [2023-11-29 23:26:31,606 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 23:26:31,606 INFO L158 Benchmark]: Toolchain (without parser) took 822927.24ms. Allocated memory was 559.9MB in the beginning and 7.3GB in the end (delta: 6.7GB). Free memory was 506.4MB in the beginning and 4.5GB in the end (delta: -4.0GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-11-29 23:26:31,606 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 343.9MB. Free memory is still 292.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 23:26:31,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.68ms. Allocated memory is still 559.9MB. Free memory was 506.1MB in the beginning and 494.4MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-29 23:26:31,608 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.69ms. Allocated memory is still 559.9MB. Free memory was 494.4MB in the beginning and 492.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:26:31,608 INFO L158 Benchmark]: Boogie Preprocessor took 27.32ms. Allocated memory is still 559.9MB. Free memory was 492.7MB in the beginning and 491.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:26:31,608 INFO L158 Benchmark]: RCFGBuilder took 409.59ms. Allocated memory is still 559.9MB. Free memory was 491.1MB in the beginning and 470.8MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-29 23:26:31,608 INFO L158 Benchmark]: TraceAbstraction took 822167.15ms. Allocated memory was 559.9MB in the beginning and 7.3GB in the end (delta: 6.7GB). Free memory was 470.1MB in the beginning and 4.5GB in the end (delta: -4.1GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. [2023-11-29 23:26:31,609 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 343.9MB. Free memory is still 292.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 284.68ms. Allocated memory is still 559.9MB. Free memory was 506.1MB in the beginning and 494.4MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.69ms. Allocated memory is still 559.9MB. Free memory was 494.4MB in the beginning and 492.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.32ms. Allocated memory is still 559.9MB. Free memory was 492.7MB in the beginning and 491.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 409.59ms. Allocated memory is still 559.9MB. Free memory was 491.1MB in the beginning and 470.8MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 822167.15ms. Allocated memory was 559.9MB in the beginning and 7.3GB in the end (delta: 6.7GB). Free memory was 470.1MB in the beginning and 4.5GB in the end (delta: -4.1GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (45states, 64/117 universal loopers) in iteration 8,while PetriNetUnfolder was constructing finite prefix that currently has 268668 conditions, 37293 events (21478/37292 cut-off events. For 96660/101945 co-relation queries the response was YES. Maximal size of possible extension queue 8878. Compared 393588 event pairs, 85 based on Foata normal form. 431/39529 useless extension candidates. Maximal degree in co-relation 268461. Up to 18860 conditions per place.). - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (45states, 64/117 universal loopers) in iteration 8,while PetriNetUnfolder was constructing finite prefix that currently has 268668 conditions, 37293 events (21478/37292 cut-off events. For 96660/101945 co-relation queries the response was YES. Maximal size of possible extension queue 8878. Compared 393588 event pairs, 85 based on Foata normal form. 431/39529 useless extension candidates. Maximal degree in co-relation 268461. Up to 18860 conditions per place.). - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (45states, 64/117 universal loopers) in iteration 8,while PetriNetUnfolder was constructing finite prefix that currently has 268668 conditions, 37293 events (21478/37292 cut-off events. For 96660/101945 co-relation queries the response was YES. Maximal size of possible extension queue 8878. Compared 393588 event pairs, 85 based on Foata normal form. 431/39529 useless extension candidates. Maximal degree in co-relation 268461. Up to 18860 conditions per place.). - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (45states, 64/117 universal loopers) in iteration 8,while PetriNetUnfolder was constructing finite prefix that currently has 268668 conditions, 37293 events (21478/37292 cut-off events. For 96660/101945 co-relation queries the response was YES. Maximal size of possible extension queue 8878. Compared 393588 event pairs, 85 based on Foata normal form. 431/39529 useless extension candidates. Maximal degree in co-relation 268461. Up to 18860 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 138 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 822.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 796.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 7387 SdHoareTripleChecker+Valid, 56.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7387 mSDsluCounter, 5867 SdHoareTripleChecker+Invalid, 52.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5513 mSDsCounter, 872 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19201 IncrementalHoareTripleChecker+Invalid, 20074 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 872 mSolverCounterUnsat, 354 mSDtfsCounter, 19201 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1942 GetRequests, 583 SyntacticMatches, 4 SemanticMatches, 1355 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304174 ImplicationChecksByTransitivity, 298.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=561110occurred in iteration=7, InterpolantAutomatonStates: 964, 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: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 23.1s InterpolantComputationTime, 1094 NumberOfCodeBlocks, 1090 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1358 ConstructedInterpolants, 0 QuantifiedInterpolants, 26629 SizeOfPredicates, 65 NumberOfNonLiveVariables, 961 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 4/23 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