/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:27:19,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:27:19,366 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:27:19,385 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:27:19,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:27:19,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:27:19,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:27:19,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:27:19,387 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:27:19,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:27:19,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:27:19,387 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:27:19,387 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:27:19,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:27:19,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:27:19,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:27:19,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:27:19,393 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:27:19,393 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:27:19,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:27:19,394 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:27:19,394 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:27:19,394 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:27:19,395 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:27:19,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:27:19,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:27:19,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:27:19,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:27:19,395 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:27:19,395 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:27:19,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:27:19,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:27:19,396 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:27:19,396 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:27:19,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:27:19,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:27:19,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:27:19,585 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:27:19,585 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:27:19,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2023-12-09 15:27:20,582 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:27:20,743 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:27:20,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-max-array.wvr.c [2023-12-09 15:27:20,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4791f1345/c5b9806f340241a3998eb0f46e6bef10/FLAGc3830abd6 [2023-12-09 15:27:20,759 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4791f1345/c5b9806f340241a3998eb0f46e6bef10 [2023-12-09 15:27:20,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:27:20,763 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:27:20,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:27:20,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:27:20,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:27:20,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d76cd4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20, skipping insertion in model container [2023-12-09 15:27:20,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,790 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:27:20,896 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-more-max-array.wvr.c[2592,2605] [2023-12-09 15:27:20,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:27:20,908 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:27:20,922 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-more-max-array.wvr.c[2592,2605] [2023-12-09 15:27:20,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:27:20,930 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:27:20,930 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:27:20,935 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:27:20,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20 WrapperNode [2023-12-09 15:27:20,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:27:20,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:27:20,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:27:20,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:27:20,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,961 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2023-12-09 15:27:20,961 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:27:20,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:27:20,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:27:20,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:27:20,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,970 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,970 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,981 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:27:20,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:27:20,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:27:20,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:27:20,995 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (1/1) ... [2023-12-09 15:27:20,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:27:21,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:21,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 15:27:21,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 15:27:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:27:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:27:21,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:27:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:27:21,038 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:27:21,038 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-09 15:27:21,039 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-09 15:27:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:27:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:27:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:27:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:27:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:27:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:27:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:27:21,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:27:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:27:21,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:27:21,040 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:27:21,108 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:27:21,109 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:27:21,330 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:27:21,380 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:27:21,380 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-09 15:27:21,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:21 BoogieIcfgContainer [2023-12-09 15:27:21,383 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:27:21,385 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:27:21,385 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:27:21,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:27:21,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:27:20" (1/3) ... [2023-12-09 15:27:21,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2621dba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:27:21, skipping insertion in model container [2023-12-09 15:27:21,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:27:20" (2/3) ... [2023-12-09 15:27:21,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2621dba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:27:21, skipping insertion in model container [2023-12-09 15:27:21,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:27:21" (3/3) ... [2023-12-09 15:27:21,389 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array.wvr.c [2023-12-09 15:27:21,402 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:27:21,403 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:27:21,403 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:27:21,470 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-09 15:27:21,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 159 transitions, 339 flow [2023-12-09 15:27:21,553 INFO L124 PetriNetUnfolderBase]: 12/156 cut-off events. [2023-12-09 15:27:21,553 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:27:21,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 12/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 102 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-12-09 15:27:21,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 159 transitions, 339 flow [2023-12-09 15:27:21,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 145 transitions, 308 flow [2023-12-09 15:27:21,570 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:27:21,577 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;@1dd61ad7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:27:21,578 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 15:27:21,613 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:27:21,614 INFO L124 PetriNetUnfolderBase]: 12/144 cut-off events. [2023-12-09 15:27:21,614 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:27:21,614 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:21,615 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:27:21,615 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)] === [2023-12-09 15:27:21,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1904712022, now seen corresponding path program 1 times [2023-12-09 15:27:21,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:21,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801786042] [2023-12-09 15:27:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:21,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:22,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:22,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801786042] [2023-12-09 15:27:22,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801786042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:27:22,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:27:22,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:27:22,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699034000] [2023-12-09 15:27:22,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:22,322 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:27:22,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:22,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:27:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:27:22,344 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 159 [2023-12-09 15:27:22,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 145 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:22,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:22,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 159 [2023-12-09 15:27:22,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:22,637 INFO L124 PetriNetUnfolderBase]: 445/932 cut-off events. [2023-12-09 15:27:22,637 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-12-09 15:27:22,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1684 conditions, 932 events. 445/932 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4360 event pairs, 135 based on Foata normal form. 5/733 useless extension candidates. Maximal degree in co-relation 1477. Up to 336 conditions per place. [2023-12-09 15:27:22,647 INFO L140 encePairwiseOnDemand]: 142/159 looper letters, 51 selfloop transitions, 6 changer transitions 4/146 dead transitions. [2023-12-09 15:27:22,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 146 transitions, 438 flow [2023-12-09 15:27:22,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:27:22,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:27:22,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 759 transitions. [2023-12-09 15:27:22,662 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6819407008086253 [2023-12-09 15:27:22,663 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 759 transitions. [2023-12-09 15:27:22,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 759 transitions. [2023-12-09 15:27:22,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:22,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 759 transitions. [2023-12-09 15:27:22,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:22,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:22,678 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:22,683 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 6 predicate places. [2023-12-09 15:27:22,683 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 146 transitions, 438 flow [2023-12-09 15:27:22,683 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:22,688 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:22,688 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:27:22,688 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:27:22,689 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)] === [2023-12-09 15:27:22,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:22,689 INFO L85 PathProgramCache]: Analyzing trace with hash 834101045, now seen corresponding path program 1 times [2023-12-09 15:27:22,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:22,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272652531] [2023-12-09 15:27:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:22,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:23,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:23,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272652531] [2023-12-09 15:27:23,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272652531] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:27:23,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:27:23,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-09 15:27:23,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470047315] [2023-12-09 15:27:23,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:23,053 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:27:23,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:23,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:27:23,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-09 15:27:23,055 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 159 [2023-12-09 15:27:23,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 146 transitions, 438 flow. Second operand has 9 states, 9 states have (on average 91.77777777777777) internal successors, (826), 9 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:23,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:23,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 159 [2023-12-09 15:27:23,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:23,315 INFO L124 PetriNetUnfolderBase]: 445/950 cut-off events. [2023-12-09 15:27:23,315 INFO L125 PetriNetUnfolderBase]: For 250/338 co-relation queries the response was YES. [2023-12-09 15:27:23,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 950 events. 445/950 cut-off events. For 250/338 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4361 event pairs, 135 based on Foata normal form. 0/745 useless extension candidates. Maximal degree in co-relation 2083. Up to 650 conditions per place. [2023-12-09 15:27:23,321 INFO L140 encePairwiseOnDemand]: 147/159 looper letters, 65 selfloop transitions, 8 changer transitions 12/158 dead transitions. [2023-12-09 15:27:23,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 158 transitions, 640 flow [2023-12-09 15:27:23,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:27:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:27:23,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 765 transitions. [2023-12-09 15:27:23,322 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6014150943396226 [2023-12-09 15:27:23,323 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 765 transitions. [2023-12-09 15:27:23,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 765 transitions. [2023-12-09 15:27:23,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:23,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 765 transitions. [2023-12-09 15:27:23,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 95.625) internal successors, (765), 8 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:23,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:23,327 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 159.0) internal successors, (1431), 9 states have internal predecessors, (1431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:23,327 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 13 predicate places. [2023-12-09 15:27:23,327 INFO L500 AbstractCegarLoop]: Abstraction has has 156 places, 158 transitions, 640 flow [2023-12-09 15:27:23,328 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 91.77777777777777) internal successors, (826), 9 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:23,328 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:23,328 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:27:23,328 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:27:23,328 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)] === [2023-12-09 15:27:23,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1419050402, now seen corresponding path program 1 times [2023-12-09 15:27:23,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:23,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133892999] [2023-12-09 15:27:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:23,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:23,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133892999] [2023-12-09 15:27:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133892999] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781642087] [2023-12-09 15:27:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:23,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:23,450 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:27:23,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:27:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:23,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-09 15:27:23,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:27:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:23,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:27:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:23,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781642087] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:23,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:27:23,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2023-12-09 15:27:23,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125797215] [2023-12-09 15:27:23,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:27:23,864 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:27:23,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:27:23,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:27:23,867 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 159 [2023-12-09 15:27:23,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 158 transitions, 640 flow. Second operand has 7 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:23,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:23,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 159 [2023-12-09 15:27:23,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:24,127 INFO L124 PetriNetUnfolderBase]: 656/1352 cut-off events. [2023-12-09 15:27:24,128 INFO L125 PetriNetUnfolderBase]: For 1045/1282 co-relation queries the response was YES. [2023-12-09 15:27:24,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4047 conditions, 1352 events. 656/1352 cut-off events. For 1045/1282 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6970 event pairs, 174 based on Foata normal form. 25/1109 useless extension candidates. Maximal degree in co-relation 3652. Up to 919 conditions per place. [2023-12-09 15:27:24,137 INFO L140 encePairwiseOnDemand]: 148/159 looper letters, 48 selfloop transitions, 8 changer transitions 12/168 dead transitions. [2023-12-09 15:27:24,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 168 transitions, 828 flow [2023-12-09 15:27:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:27:24,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:27:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 854 transitions. [2023-12-09 15:27:24,139 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7672955974842768 [2023-12-09 15:27:24,139 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 854 transitions. [2023-12-09 15:27:24,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 854 transitions. [2023-12-09 15:27:24,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:24,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 854 transitions. [2023-12-09 15:27:24,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.0) internal successors, (854), 7 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:24,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:24,143 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:24,144 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 19 predicate places. [2023-12-09 15:27:24,144 INFO L500 AbstractCegarLoop]: Abstraction has has 162 places, 168 transitions, 828 flow [2023-12-09 15:27:24,144 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.28571428571429) internal successors, (835), 7 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:24,144 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:24,144 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:27:24,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:27:24,360 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:24,360 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)] === [2023-12-09 15:27:24,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:24,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1619949401, now seen corresponding path program 1 times [2023-12-09 15:27:24,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:24,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754070735] [2023-12-09 15:27:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:24,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:25,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:25,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754070735] [2023-12-09 15:27:25,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754070735] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:25,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303806563] [2023-12-09 15:27:25,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:25,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:25,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:25,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:27:25,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:27:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:25,575 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-09 15:27:25,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:27:26,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2023-12-09 15:27:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:26,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:27:26,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:27:26,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 49 [2023-12-09 15:27:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:27,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303806563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:27:27,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:27:27,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19, 18] total 52 [2023-12-09 15:27:27,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821510016] [2023-12-09 15:27:27,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:27:27,265 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-12-09 15:27:27,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:27,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-12-09 15:27:27,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=2341, Unknown=0, NotChecked=0, Total=2652 [2023-12-09 15:27:27,270 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 159 [2023-12-09 15:27:27,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 168 transitions, 828 flow. Second operand has 52 states, 52 states have (on average 64.09615384615384) internal successors, (3333), 52 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:27,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:27,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 159 [2023-12-09 15:27:27,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:30,122 INFO L124 PetriNetUnfolderBase]: 3774/6267 cut-off events. [2023-12-09 15:27:30,123 INFO L125 PetriNetUnfolderBase]: For 5221/5397 co-relation queries the response was YES. [2023-12-09 15:27:30,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22280 conditions, 6267 events. 3774/6267 cut-off events. For 5221/5397 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 41133 event pairs, 490 based on Foata normal form. 0/5324 useless extension candidates. Maximal degree in co-relation 18701. Up to 3833 conditions per place. [2023-12-09 15:27:30,173 INFO L140 encePairwiseOnDemand]: 116/159 looper letters, 254 selfloop transitions, 94 changer transitions 22/418 dead transitions. [2023-12-09 15:27:30,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 418 transitions, 3152 flow [2023-12-09 15:27:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-09 15:27:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-12-09 15:27:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 3603 transitions. [2023-12-09 15:27:30,181 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.41200686106346485 [2023-12-09 15:27:30,181 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 3603 transitions. [2023-12-09 15:27:30,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 3603 transitions. [2023-12-09 15:27:30,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:30,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 3603 transitions. [2023-12-09 15:27:30,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 65.50909090909092) internal successors, (3603), 55 states have internal predecessors, (3603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:30,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 159.0) internal successors, (8904), 56 states have internal predecessors, (8904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:30,200 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 159.0) internal successors, (8904), 56 states have internal predecessors, (8904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:30,201 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 73 predicate places. [2023-12-09 15:27:30,201 INFO L500 AbstractCegarLoop]: Abstraction has has 216 places, 418 transitions, 3152 flow [2023-12-09 15:27:30,202 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 64.09615384615384) internal successors, (3333), 52 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:30,203 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:30,203 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:27:30,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-09 15:27:30,408 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-09 15:27:30,408 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)] === [2023-12-09 15:27:30,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:30,409 INFO L85 PathProgramCache]: Analyzing trace with hash 235475249, now seen corresponding path program 2 times [2023-12-09 15:27:30,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:30,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599574375] [2023-12-09 15:27:30,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:30,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:31,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:31,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:31,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599574375] [2023-12-09 15:27:31,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599574375] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:31,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165933745] [2023-12-09 15:27:31,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:27:31,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:31,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:31,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:27:31,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:27:31,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:27:31,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:27:31,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-09 15:27:31,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:27:31,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:27:31,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 39 [2023-12-09 15:27:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:32,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:27:32,319 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:27:32,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 49 [2023-12-09 15:27:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:32,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165933745] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:27:32,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:27:32,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 15] total 43 [2023-12-09 15:27:32,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066544118] [2023-12-09 15:27:32,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:27:32,589 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-09 15:27:32,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-09 15:27:32,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1552, Unknown=0, NotChecked=0, Total=1806 [2023-12-09 15:27:32,591 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 159 [2023-12-09 15:27:32,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 418 transitions, 3152 flow. Second operand has 43 states, 43 states have (on average 61.02325581395349) internal successors, (2624), 43 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:32,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:32,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 159 [2023-12-09 15:27:32,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:37,824 INFO L124 PetriNetUnfolderBase]: 11220/18173 cut-off events. [2023-12-09 15:27:37,824 INFO L125 PetriNetUnfolderBase]: For 19545/20283 co-relation queries the response was YES. [2023-12-09 15:27:37,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75085 conditions, 18173 events. 11220/18173 cut-off events. For 19545/20283 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 134888 event pairs, 1927 based on Foata normal form. 51/16526 useless extension candidates. Maximal degree in co-relation 62184. Up to 9090 conditions per place. [2023-12-09 15:27:38,043 INFO L140 encePairwiseOnDemand]: 112/159 looper letters, 728 selfloop transitions, 345 changer transitions 35/1152 dead transitions. [2023-12-09 15:27:38,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 1152 transitions, 10874 flow [2023-12-09 15:27:38,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-12-09 15:27:38,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-12-09 15:27:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 5151 transitions. [2023-12-09 15:27:38,053 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.410078815380941 [2023-12-09 15:27:38,054 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 5151 transitions. [2023-12-09 15:27:38,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 5151 transitions. [2023-12-09 15:27:38,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:38,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 5151 transitions. [2023-12-09 15:27:38,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 65.20253164556962) internal successors, (5151), 79 states have internal predecessors, (5151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:38,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 159.0) internal successors, (12720), 80 states have internal predecessors, (12720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:38,083 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 159.0) internal successors, (12720), 80 states have internal predecessors, (12720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:38,085 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 151 predicate places. [2023-12-09 15:27:38,085 INFO L500 AbstractCegarLoop]: Abstraction has has 294 places, 1152 transitions, 10874 flow [2023-12-09 15:27:38,086 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 61.02325581395349) internal successors, (2624), 43 states have internal predecessors, (2624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:38,086 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:38,086 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:27:38,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-09 15:27:38,291 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:38,292 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)] === [2023-12-09 15:27:38,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:38,292 INFO L85 PathProgramCache]: Analyzing trace with hash -683666695, now seen corresponding path program 3 times [2023-12-09 15:27:38,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:38,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653416382] [2023-12-09 15:27:38,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:38,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:39,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:39,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653416382] [2023-12-09 15:27:39,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653416382] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:39,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797213223] [2023-12-09 15:27:39,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:27:39,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:39,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:39,502 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:27:39,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:27:39,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:27:39,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:27:39,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-09 15:27:39,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:27:40,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:27:40,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-12-09 15:27:40,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:27:40,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2023-12-09 15:27:40,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:27:40,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 39 [2023-12-09 15:27:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:41,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:27:42,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:27:42,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 279 treesize of output 255 [2023-12-09 15:27:42,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 195 [2023-12-09 15:27:42,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 189 [2023-12-09 15:27:42,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 165 [2023-12-09 15:27:42,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 153 [2023-12-09 15:27:43,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:43,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797213223] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:27:43,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:27:43,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 24] total 63 [2023-12-09 15:27:43,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075087856] [2023-12-09 15:27:43,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:27:43,140 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2023-12-09 15:27:43,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:43,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2023-12-09 15:27:43,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=3495, Unknown=10, NotChecked=0, Total=3906 [2023-12-09 15:27:43,143 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 159 [2023-12-09 15:27:43,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 1152 transitions, 10874 flow. Second operand has 63 states, 63 states have (on average 47.666666666666664) internal successors, (3003), 63 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:43,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:43,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 159 [2023-12-09 15:27:43,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:53,904 INFO L124 PetriNetUnfolderBase]: 18671/29917 cut-off events. [2023-12-09 15:27:53,905 INFO L125 PetriNetUnfolderBase]: For 36708/38081 co-relation queries the response was YES. [2023-12-09 15:27:53,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151849 conditions, 29917 events. 18671/29917 cut-off events. For 36708/38081 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 235274 event pairs, 1201 based on Foata normal form. 117/27313 useless extension candidates. Maximal degree in co-relation 111700. Up to 17863 conditions per place. [2023-12-09 15:27:54,180 INFO L140 encePairwiseOnDemand]: 110/159 looper letters, 1621 selfloop transitions, 920 changer transitions 73/2651 dead transitions. [2023-12-09 15:27:54,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 2651 transitions, 30614 flow [2023-12-09 15:27:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-09 15:27:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-12-09 15:27:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 5607 transitions. [2023-12-09 15:27:54,191 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33268066927732287 [2023-12-09 15:27:54,191 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 5607 transitions. [2023-12-09 15:27:54,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 5607 transitions. [2023-12-09 15:27:54,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:54,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 5607 transitions. [2023-12-09 15:27:54,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 52.89622641509434) internal successors, (5607), 106 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:54,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 159.0) internal successors, (17013), 107 states have internal predecessors, (17013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:54,233 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 159.0) internal successors, (17013), 107 states have internal predecessors, (17013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:54,235 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 256 predicate places. [2023-12-09 15:27:54,235 INFO L500 AbstractCegarLoop]: Abstraction has has 399 places, 2651 transitions, 30614 flow [2023-12-09 15:27:54,238 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 47.666666666666664) internal successors, (3003), 63 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:54,238 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:54,238 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:27:54,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:27:54,443 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:54,444 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)] === [2023-12-09 15:27:54,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1649208508, now seen corresponding path program 4 times [2023-12-09 15:27:54,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:54,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151340501] [2023-12-09 15:27:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:54,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:54,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:54,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151340501] [2023-12-09 15:27:54,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151340501] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:54,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669680317] [2023-12-09 15:27:54,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:27:54,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:54,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:54,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:27:54,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:27:54,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:27:54,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:27:54,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:27:54,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:27:54,875 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:54,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:27:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:27:55,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669680317] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:27:55,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:27:55,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2023-12-09 15:27:55,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706058183] [2023-12-09 15:27:55,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:27:55,060 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-09 15:27:55,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:55,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-09 15:27:55,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2023-12-09 15:27:55,064 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 159 [2023-12-09 15:27:55,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 2651 transitions, 30614 flow. Second operand has 24 states, 24 states have (on average 116.20833333333333) internal successors, (2789), 24 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:55,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:55,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 159 [2023-12-09 15:27:55,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:03,166 INFO L124 PetriNetUnfolderBase]: 22654/36602 cut-off events. [2023-12-09 15:28:03,166 INFO L125 PetriNetUnfolderBase]: For 73441/74891 co-relation queries the response was YES. [2023-12-09 15:28:03,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198817 conditions, 36602 events. 22654/36602 cut-off events. For 73441/74891 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 296710 event pairs, 1666 based on Foata normal form. 140/33738 useless extension candidates. Maximal degree in co-relation 104866. Up to 21560 conditions per place. [2023-12-09 15:28:03,459 INFO L140 encePairwiseOnDemand]: 139/159 looper letters, 1423 selfloop transitions, 308 changer transitions 89/2950 dead transitions. [2023-12-09 15:28:03,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 2950 transitions, 38374 flow [2023-12-09 15:28:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-09 15:28:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-12-09 15:28:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2249 transitions. [2023-12-09 15:28:03,462 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7444554783184376 [2023-12-09 15:28:03,462 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2249 transitions. [2023-12-09 15:28:03,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2249 transitions. [2023-12-09 15:28:03,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:03,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2249 transitions. [2023-12-09 15:28:03,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 118.36842105263158) internal successors, (2249), 19 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:03,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 159.0) internal successors, (3180), 20 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:03,467 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 159.0) internal successors, (3180), 20 states have internal predecessors, (3180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:03,468 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 274 predicate places. [2023-12-09 15:28:03,468 INFO L500 AbstractCegarLoop]: Abstraction has has 417 places, 2950 transitions, 38374 flow [2023-12-09 15:28:03,468 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 116.20833333333333) internal successors, (2789), 24 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:03,468 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:03,469 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:03,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:03,673 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:03,673 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)] === [2023-12-09 15:28:03,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:03,674 INFO L85 PathProgramCache]: Analyzing trace with hash -435419826, now seen corresponding path program 1 times [2023-12-09 15:28:03,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:03,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075994200] [2023-12-09 15:28:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:03,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:28:03,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075994200] [2023-12-09 15:28:03,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075994200] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:03,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568057016] [2023-12-09 15:28:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:03,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:03,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:03,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:28:03,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:28:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:03,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:28:03,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:28:04,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:28:04,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568057016] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:04,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:04,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 24 [2023-12-09 15:28:04,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687858647] [2023-12-09 15:28:04,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:04,250 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-09 15:28:04,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:04,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-09 15:28:04,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2023-12-09 15:28:04,253 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 159 [2023-12-09 15:28:04,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 2950 transitions, 38374 flow. Second operand has 24 states, 24 states have (on average 109.20833333333333) internal successors, (2621), 24 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:04,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:04,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 159 [2023-12-09 15:28:04,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:14,944 INFO L124 PetriNetUnfolderBase]: 25157/40409 cut-off events. [2023-12-09 15:28:14,944 INFO L125 PetriNetUnfolderBase]: For 104177/105876 co-relation queries the response was YES. [2023-12-09 15:28:15,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245546 conditions, 40409 events. 25157/40409 cut-off events. For 104177/105876 co-relation queries the response was YES. Maximal size of possible extension queue 1713. Compared 331481 event pairs, 1520 based on Foata normal form. 328/37543 useless extension candidates. Maximal degree in co-relation 137878. Up to 23849 conditions per place. [2023-12-09 15:28:15,455 INFO L140 encePairwiseOnDemand]: 137/159 looper letters, 2516 selfloop transitions, 459 changer transitions 334/4165 dead transitions. [2023-12-09 15:28:15,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 4165 transitions, 63094 flow [2023-12-09 15:28:15,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-09 15:28:15,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-12-09 15:28:15,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3073 transitions. [2023-12-09 15:28:15,458 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7158164453761938 [2023-12-09 15:28:15,458 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3073 transitions. [2023-12-09 15:28:15,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3073 transitions. [2023-12-09 15:28:15,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:15,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3073 transitions. [2023-12-09 15:28:15,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 113.81481481481481) internal successors, (3073), 27 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:15,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 159.0) internal successors, (4452), 28 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:15,467 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 159.0) internal successors, (4452), 28 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:15,468 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 300 predicate places. [2023-12-09 15:28:15,469 INFO L500 AbstractCegarLoop]: Abstraction has has 443 places, 4165 transitions, 63094 flow [2023-12-09 15:28:15,469 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 109.20833333333333) internal successors, (2621), 24 states have internal predecessors, (2621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:15,469 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:15,469 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:15,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:15,674 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:15,674 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:28:15,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash -182600336, now seen corresponding path program 2 times [2023-12-09 15:28:15,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:15,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804563840] [2023-12-09 15:28:15,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:15,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:28:15,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:15,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804563840] [2023-12-09 15:28:15,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804563840] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:15,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806750330] [2023-12-09 15:28:15,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:28:15,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:15,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:15,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:28:15,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:28:15,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:28:15,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:15,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:28:15,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:28:16,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:28:16,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806750330] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:16,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:16,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 20 [2023-12-09 15:28:16,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121623440] [2023-12-09 15:28:16,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:16,132 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:28:16,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:16,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:28:16,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:28:16,134 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 159 [2023-12-09 15:28:16,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 4165 transitions, 63094 flow. Second operand has 20 states, 20 states have (on average 105.4) internal successors, (2108), 20 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:16,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:16,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 159 [2023-12-09 15:28:16,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:43,149 INFO L124 PetriNetUnfolderBase]: 42283/66599 cut-off events. [2023-12-09 15:28:43,149 INFO L125 PetriNetUnfolderBase]: For 210147/212710 co-relation queries the response was YES. [2023-12-09 15:28:43,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448532 conditions, 66599 events. 42283/66599 cut-off events. For 210147/212710 co-relation queries the response was YES. Maximal size of possible extension queue 2546. Compared 561453 event pairs, 2199 based on Foata normal form. 564/62238 useless extension candidates. Maximal degree in co-relation 237852. Up to 39532 conditions per place. [2023-12-09 15:28:43,943 INFO L140 encePairwiseOnDemand]: 129/159 looper letters, 5284 selfloop transitions, 2676 changer transitions 779/9271 dead transitions. [2023-12-09 15:28:43,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 9271 transitions, 149851 flow [2023-12-09 15:28:43,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-12-09 15:28:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-12-09 15:28:43,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 10659 transitions. [2023-12-09 15:28:43,951 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6911106788562537 [2023-12-09 15:28:43,951 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 10659 transitions. [2023-12-09 15:28:43,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 10659 transitions. [2023-12-09 15:28:43,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:43,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 10659 transitions. [2023-12-09 15:28:43,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 109.88659793814433) internal successors, (10659), 97 states have internal predecessors, (10659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:43,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 159.0) internal successors, (15582), 98 states have internal predecessors, (15582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:43,976 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 159.0) internal successors, (15582), 98 states have internal predecessors, (15582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:43,976 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 396 predicate places. [2023-12-09 15:28:43,976 INFO L500 AbstractCegarLoop]: Abstraction has has 539 places, 9271 transitions, 149851 flow [2023-12-09 15:28:43,977 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 105.4) internal successors, (2108), 20 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:43,977 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:43,977 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:43,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-09 15:28:44,183 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:44,184 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:28:44,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:44,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1870877408, now seen corresponding path program 3 times [2023-12-09 15:28:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:44,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689100815] [2023-12-09 15:28:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:44,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:44,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:28:44,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689100815] [2023-12-09 15:28:44,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689100815] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:44,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312462773] [2023-12-09 15:28:44,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:28:44,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:44,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:44,305 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:28:44,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:28:44,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:28:44,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:44,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:28:44,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:28:44,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:28:44,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312462773] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:44,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:44,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2023-12-09 15:28:44,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375920929] [2023-12-09 15:28:44,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:44,815 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-09 15:28:44,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:44,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-09 15:28:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2023-12-09 15:28:44,817 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 159 [2023-12-09 15:28:44,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 539 places, 9271 transitions, 149851 flow. Second operand has 27 states, 27 states have (on average 81.14814814814815) internal successors, (2191), 27 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:28:44,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:44,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 159 [2023-12-09 15:28:44,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:29:25,034 INFO L124 PetriNetUnfolderBase]: 26981/43268 cut-off events. [2023-12-09 15:29:25,034 INFO L125 PetriNetUnfolderBase]: For 152484/154508 co-relation queries the response was YES. [2023-12-09 15:29:25,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321276 conditions, 43268 events. 26981/43268 cut-off events. For 152484/154508 co-relation queries the response was YES. Maximal size of possible extension queue 1489. Compared 350102 event pairs, 2363 based on Foata normal form. 240/40895 useless extension candidates. Maximal degree in co-relation 174523. Up to 25893 conditions per place. [2023-12-09 15:29:25,515 INFO L140 encePairwiseOnDemand]: 123/159 looper letters, 3907 selfloop transitions, 2174 changer transitions 561/7126 dead transitions. [2023-12-09 15:29:25,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 7126 transitions, 126922 flow [2023-12-09 15:29:25,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-09 15:29:25,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-12-09 15:29:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 4897 transitions. [2023-12-09 15:29:25,519 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5310127954890479 [2023-12-09 15:29:25,519 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 4897 transitions. [2023-12-09 15:29:25,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 4897 transitions. [2023-12-09 15:29:25,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:29:25,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 4897 transitions. [2023-12-09 15:29:25,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 84.43103448275862) internal successors, (4897), 58 states have internal predecessors, (4897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:25,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 159.0) internal successors, (9381), 59 states have internal predecessors, (9381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:25,532 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 159.0) internal successors, (9381), 59 states have internal predecessors, (9381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:25,533 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 431 predicate places. [2023-12-09 15:29:25,533 INFO L500 AbstractCegarLoop]: Abstraction has has 574 places, 7126 transitions, 126922 flow [2023-12-09 15:29:25,533 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 81.14814814814815) internal successors, (2191), 27 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:25,533 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:29:25,533 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:29:25,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-09 15:29:25,738 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-09 15:29:25,738 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:29:25,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:29:25,739 INFO L85 PathProgramCache]: Analyzing trace with hash -2134170342, now seen corresponding path program 5 times [2023-12-09 15:29:25,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:29:25,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108906833] [2023-12-09 15:29:25,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:29:25,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:29:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:29:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:29:26,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:29:26,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108906833] [2023-12-09 15:29:26,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108906833] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:29:26,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004871743] [2023-12-09 15:29:26,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:29:26,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:29:26,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:29:26,031 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:29:26,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:29:26,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:29:26,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:29:26,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:29:26,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:29:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:29:26,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:29:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:29:26,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004871743] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:29:26,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:29:26,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 34 [2023-12-09 15:29:26,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125153174] [2023-12-09 15:29:26,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:29:26,808 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-09 15:29:26,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:29:26,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-09 15:29:26,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2023-12-09 15:29:26,810 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 159 [2023-12-09 15:29:26,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 7126 transitions, 126922 flow. Second operand has 34 states, 34 states have (on average 88.47058823529412) internal successors, (3008), 34 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:26,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:29:26,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 159 [2023-12-09 15:29:26,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:29:53,422 INFO L124 PetriNetUnfolderBase]: 24220/38913 cut-off events. [2023-12-09 15:29:53,423 INFO L125 PetriNetUnfolderBase]: For 163952/165951 co-relation queries the response was YES. [2023-12-09 15:29:53,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307469 conditions, 38913 events. 24220/38913 cut-off events. For 163952/165951 co-relation queries the response was YES. Maximal size of possible extension queue 1295. Compared 310798 event pairs, 861 based on Foata normal form. 18/36727 useless extension candidates. Maximal degree in co-relation 185132. Up to 23618 conditions per place. [2023-12-09 15:29:53,766 INFO L140 encePairwiseOnDemand]: 129/159 looper letters, 2065 selfloop transitions, 154 changer transitions 3301/6651 dead transitions. [2023-12-09 15:29:53,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 6651 transitions, 125795 flow [2023-12-09 15:29:53,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 15:29:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 15:29:53,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2580 transitions. [2023-12-09 15:29:53,768 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5595315549772284 [2023-12-09 15:29:53,768 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2580 transitions. [2023-12-09 15:29:53,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2580 transitions. [2023-12-09 15:29:53,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:29:53,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2580 transitions. [2023-12-09 15:29:53,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 88.96551724137932) internal successors, (2580), 29 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:53,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 159.0) internal successors, (4770), 30 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:53,774 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 159.0) internal successors, (4770), 30 states have internal predecessors, (4770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:53,774 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 459 predicate places. [2023-12-09 15:29:53,774 INFO L500 AbstractCegarLoop]: Abstraction has has 602 places, 6651 transitions, 125795 flow [2023-12-09 15:29:53,774 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 88.47058823529412) internal successors, (3008), 34 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:53,774 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:29:53,775 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:29:53,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:29:53,980 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:29:53,980 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:29:53,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:29:53,981 INFO L85 PathProgramCache]: Analyzing trace with hash 760066894, now seen corresponding path program 6 times [2023-12-09 15:29:53,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:29:53,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120466342] [2023-12-09 15:29:53,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:29:53,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:29:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:29:54,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:29:54,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:29:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120466342] [2023-12-09 15:29:54,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120466342] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:29:54,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041012890] [2023-12-09 15:29:54,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:29:54,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:29:54,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:29:54,117 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:29:54,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:29:54,251 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:29:54,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:29:54,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:29:54,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:29:54,406 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:29:54,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:29:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:29:54,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041012890] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:29:54,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:29:54,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2023-12-09 15:29:54,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937901037] [2023-12-09 15:29:54,584 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:29:54,584 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-09 15:29:54,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:29:54,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-09 15:29:54,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2023-12-09 15:29:54,586 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 159 [2023-12-09 15:29:54,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 6651 transitions, 125795 flow. Second operand has 24 states, 24 states have (on average 116.20833333333333) internal successors, (2789), 24 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:29:54,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:29:54,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 159 [2023-12-09 15:29:54,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:30:16,519 INFO L124 PetriNetUnfolderBase]: 19642/31374 cut-off events. [2023-12-09 15:30:16,519 INFO L125 PetriNetUnfolderBase]: For 163060/164424 co-relation queries the response was YES. [2023-12-09 15:30:16,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260334 conditions, 31374 events. 19642/31374 cut-off events. For 163060/164424 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 240692 event pairs, 790 based on Foata normal form. 71/30030 useless extension candidates. Maximal degree in co-relation 152725. Up to 17953 conditions per place. [2023-12-09 15:30:16,847 INFO L140 encePairwiseOnDemand]: 142/159 looper letters, 1016 selfloop transitions, 221 changer transitions 3240/5351 dead transitions. [2023-12-09 15:30:16,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 5351 transitions, 105926 flow [2023-12-09 15:30:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:30:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-12-09 15:30:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2372 transitions. [2023-12-09 15:30:16,849 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7459119496855345 [2023-12-09 15:30:16,849 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2372 transitions. [2023-12-09 15:30:16,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2372 transitions. [2023-12-09 15:30:16,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:30:16,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2372 transitions. [2023-12-09 15:30:16,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 118.6) internal successors, (2372), 20 states have internal predecessors, (2372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:16,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 159.0) internal successors, (3339), 21 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:16,853 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 159.0) internal successors, (3339), 21 states have internal predecessors, (3339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:16,854 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 463 predicate places. [2023-12-09 15:30:16,854 INFO L500 AbstractCegarLoop]: Abstraction has has 606 places, 5351 transitions, 105926 flow [2023-12-09 15:30:16,854 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 116.20833333333333) internal successors, (2789), 24 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:16,854 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:30:16,855 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:30:16,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-09 15:30:17,059 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-09 15:30:17,062 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:30:17,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:30:17,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1260286457, now seen corresponding path program 7 times [2023-12-09 15:30:17,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:30:17,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804237466] [2023-12-09 15:30:17,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:30:17,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:30:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:30:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-09 15:30:17,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:30:17,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804237466] [2023-12-09 15:30:17,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804237466] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:30:17,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899139272] [2023-12-09 15:30:17,220 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:30:17,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:30:17,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:30:17,221 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:30:17,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:30:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:30:17,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:30:17,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:30:17,501 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-09 15:30:17,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:30:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-09 15:30:17,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899139272] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:30:17,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:30:17,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2023-12-09 15:30:17,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689893399] [2023-12-09 15:30:17,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:30:17,713 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-09 15:30:17,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:30:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-09 15:30:17,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2023-12-09 15:30:17,715 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 159 [2023-12-09 15:30:17,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 5351 transitions, 105926 flow. Second operand has 27 states, 27 states have (on average 107.88888888888889) internal successors, (2913), 27 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:17,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:30:17,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 159 [2023-12-09 15:30:17,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:30:39,084 INFO L124 PetriNetUnfolderBase]: 25964/40893 cut-off events. [2023-12-09 15:30:39,085 INFO L125 PetriNetUnfolderBase]: For 233342/234775 co-relation queries the response was YES. [2023-12-09 15:30:39,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367746 conditions, 40893 events. 25964/40893 cut-off events. For 233342/234775 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 316211 event pairs, 1217 based on Foata normal form. 12/38930 useless extension candidates. Maximal degree in co-relation 246225. Up to 24211 conditions per place. [2023-12-09 15:30:39,501 INFO L140 encePairwiseOnDemand]: 138/159 looper letters, 2062 selfloop transitions, 893 changer transitions 3242/6590 dead transitions. [2023-12-09 15:30:39,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 6590 transitions, 144151 flow [2023-12-09 15:30:39,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:30:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:30:39,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3374 transitions. [2023-12-09 15:30:39,504 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7073375262054508 [2023-12-09 15:30:39,504 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3374 transitions. [2023-12-09 15:30:39,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3374 transitions. [2023-12-09 15:30:39,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:30:39,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3374 transitions. [2023-12-09 15:30:39,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.46666666666667) internal successors, (3374), 30 states have internal predecessors, (3374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:39,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 159.0) internal successors, (4929), 31 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:39,510 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 159.0) internal successors, (4929), 31 states have internal predecessors, (4929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:39,511 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 492 predicate places. [2023-12-09 15:30:39,511 INFO L500 AbstractCegarLoop]: Abstraction has has 635 places, 6590 transitions, 144151 flow [2023-12-09 15:30:39,511 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 107.88888888888889) internal successors, (2913), 27 states have internal predecessors, (2913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:39,511 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:30:39,511 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:30:39,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 15:30:39,719 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-09 15:30:39,719 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:30:39,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:30:39,719 INFO L85 PathProgramCache]: Analyzing trace with hash -478457351, now seen corresponding path program 8 times [2023-12-09 15:30:39,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:30:39,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814629629] [2023-12-09 15:30:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:30:39,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:30:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:30:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-09 15:30:39,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:30:39,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814629629] [2023-12-09 15:30:39,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814629629] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:30:39,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754686392] [2023-12-09 15:30:39,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:30:39,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:30:39,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:30:39,877 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:30:39,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 15:30:39,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:30:39,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:30:39,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:30:39,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:30:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-09 15:30:40,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:30:40,385 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-09 15:30:40,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754686392] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:30:40,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:30:40,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 29 [2023-12-09 15:30:40,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311379535] [2023-12-09 15:30:40,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:30:40,386 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-09 15:30:40,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:30:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-09 15:30:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=680, Unknown=0, NotChecked=0, Total=812 [2023-12-09 15:30:40,525 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 159 [2023-12-09 15:30:40,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 6590 transitions, 144151 flow. Second operand has 29 states, 29 states have (on average 107.89655172413794) internal successors, (3129), 29 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:30:40,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:30:40,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 159 [2023-12-09 15:30:40,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:31:26,650 INFO L124 PetriNetUnfolderBase]: 41402/63984 cut-off events. [2023-12-09 15:31:26,650 INFO L125 PetriNetUnfolderBase]: For 371564/373482 co-relation queries the response was YES. [2023-12-09 15:31:26,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 621912 conditions, 63984 events. 41402/63984 cut-off events. For 371564/373482 co-relation queries the response was YES. Maximal size of possible extension queue 1639. Compared 504040 event pairs, 1766 based on Foata normal form. 16/60224 useless extension candidates. Maximal degree in co-relation 478573. Up to 39149 conditions per place. [2023-12-09 15:31:27,546 INFO L140 encePairwiseOnDemand]: 137/159 looper letters, 4610 selfloop transitions, 1350 changer transitions 3242/9595 dead transitions. [2023-12-09 15:31:27,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 9595 transitions, 230934 flow [2023-12-09 15:31:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 15:31:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 15:31:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3613 transitions. [2023-12-09 15:31:27,549 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7101022012578616 [2023-12-09 15:31:27,549 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3613 transitions. [2023-12-09 15:31:27,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3613 transitions. [2023-12-09 15:31:27,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:31:27,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3613 transitions. [2023-12-09 15:31:27,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 112.90625) internal successors, (3613), 32 states have internal predecessors, (3613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:27,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 159.0) internal successors, (5247), 33 states have internal predecessors, (5247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:27,555 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 159.0) internal successors, (5247), 33 states have internal predecessors, (5247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:27,555 INFO L308 CegarLoopForPetriNet]: 143 programPoint places, 523 predicate places. [2023-12-09 15:31:27,555 INFO L500 AbstractCegarLoop]: Abstraction has has 666 places, 9595 transitions, 230934 flow [2023-12-09 15:31:27,556 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 107.89655172413794) internal successors, (3129), 29 states have internal predecessors, (3129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:27,556 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:31:27,556 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:31:27,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-09 15:31:27,760 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-09 15:31:27,763 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:31:27,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:31:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash 567496473, now seen corresponding path program 9 times [2023-12-09 15:31:27,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:31:27,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241479798] [2023-12-09 15:31:27,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:31:27,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:31:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:31:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-09 15:31:28,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:31:28,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241479798] [2023-12-09 15:31:28,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241479798] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:31:28,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678794245] [2023-12-09 15:31:28,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:31:28,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:31:28,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:31:28,093 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:31:28,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-09 15:31:28,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:31:28,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:31:28,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:31:28,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:31:28,378 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:31:28,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:31:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:31:28,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678794245] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:31:28,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:31:28,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 26 [2023-12-09 15:31:28,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487764149] [2023-12-09 15:31:28,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:31:28,516 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-09 15:31:28,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:31:28,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-09 15:31:28,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=561, Unknown=0, NotChecked=0, Total=650 [2023-12-09 15:31:28,518 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 159 [2023-12-09 15:31:28,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 9595 transitions, 230934 flow. Second operand has 26 states, 26 states have (on average 103.84615384615384) internal successors, (2700), 26 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:28,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:31:28,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 159 [2023-12-09 15:31:28,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:31:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-09 15:31:29,434 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-12-09 15:31:29,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-09 15:31:29,447 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:31:29,451 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:31:29,635 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-09 15:31:29,635 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 100/159 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 2631 conditions, 296 events (61/295 cut-off events. For 3606/3664 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1359 event pairs, 2 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 2556. Up to 84 conditions per place.). [2023-12-09 15:31:29,636 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-12-09 15:31:29,636 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-12-09 15:31:29,637 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-12-09 15:31:29,637 INFO L457 BasicCegarLoop]: Path program histogram: [9, 3, 1, 1, 1] [2023-12-09 15:31:29,639 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:31:29,639 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:31:29,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:31:29 BasicIcfg [2023-12-09 15:31:29,642 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:31:29,642 INFO L158 Benchmark]: Toolchain (without parser) took 248879.35ms. Allocated memory was 210.8MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 162.1MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-09 15:31:29,642 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 210.8MB. Free memory was 157.7MB in the beginning and 157.5MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:31:29,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.77ms. Allocated memory is still 210.8MB. Free memory was 161.8MB in the beginning and 150.0MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:31:29,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.19ms. Allocated memory is still 210.8MB. Free memory was 150.0MB in the beginning and 148.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:31:29,643 INFO L158 Benchmark]: Boogie Preprocessor took 29.15ms. Allocated memory is still 210.8MB. Free memory was 148.2MB in the beginning and 146.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:31:29,643 INFO L158 Benchmark]: RCFGBuilder took 391.83ms. Allocated memory is still 210.8MB. Free memory was 146.4MB in the beginning and 124.1MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-12-09 15:31:29,643 INFO L158 Benchmark]: TraceAbstraction took 248257.32ms. Allocated memory was 210.8MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 123.4MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2023-12-09 15:31:29,644 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 210.8MB. Free memory was 157.7MB in the beginning and 157.5MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 171.77ms. Allocated memory is still 210.8MB. Free memory was 161.8MB in the beginning and 150.0MB in the end (delta: 11.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.19ms. Allocated memory is still 210.8MB. Free memory was 150.0MB in the beginning and 148.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.15ms. Allocated memory is still 210.8MB. Free memory was 148.2MB in the beginning and 146.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 391.83ms. Allocated memory is still 210.8MB. Free memory was 146.4MB in the beginning and 124.1MB in the end (delta: 22.3MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 248257.32ms. Allocated memory was 210.8MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 123.4MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 100/159 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 2631 conditions, 296 events (61/295 cut-off events. For 3606/3664 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1359 event pairs, 2 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 2556. Up to 84 conditions per place.). - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 100/159 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 2631 conditions, 296 events (61/295 cut-off events. For 3606/3664 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1359 event pairs, 2 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 2556. Up to 84 conditions per place.). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 100/159 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 2631 conditions, 296 events (61/295 cut-off events. For 3606/3664 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1359 event pairs, 2 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 2556. Up to 84 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (26states, 100/159 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 2631 conditions, 296 events (61/295 cut-off events. For 3606/3664 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 1359 event pairs, 2 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 2556. Up to 84 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 184 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: 248.1s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 227.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5732 SdHoareTripleChecker+Valid, 10.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5732 mSDsluCounter, 13950 SdHoareTripleChecker+Invalid, 8.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13029 mSDsCounter, 241 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22091 IncrementalHoareTripleChecker+Invalid, 22332 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 241 mSolverCounterUnsat, 921 mSDtfsCounter, 22091 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4128 GetRequests, 3240 SyntacticMatches, 24 SemanticMatches, 864 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23392 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230934occurred in iteration=14, InterpolantAutomatonStates: 574, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 3687 NumberOfCodeBlocks, 3670 NumberOfCodeBlocksAsserted, 40 NumberOfCheckSat, 5377 ConstructedInterpolants, 15 QuantifiedInterpolants, 28936 SizeOfPredicates, 175 NumberOfNonLiveVariables, 4055 ConjunctsInSsa, 208 ConjunctsInUnsatCore, 41 InterpolantComputations, 3 PerfectInterpolantSequences, 178/322 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