/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 -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:06:51,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:06:51,845 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-SemanticLbe.epf [2023-11-17 12:06:51,879 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:06:51,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:06:51,881 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:06:51,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:06:51,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:06:51,882 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:06:51,886 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:06:51,887 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:06:51,887 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:06:51,887 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:06:51,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:06:51,889 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:06:51,889 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:06:51,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:06:51,889 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:06:51,890 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:06:51,890 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:06:51,890 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:06:51,891 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:06:51,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:06:51,891 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:06:51,891 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:06:51,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:06:51,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:06:51,892 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:06:51,892 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:06:51,892 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:06:51,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:06:51,893 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:06:51,894 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:06:52,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:06:52,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:06:52,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:06:52,178 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:06:52,180 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:06:52,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-11-17 12:06:53,450 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:06:53,652 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:06:53,653 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-11-17 12:06:53,659 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d33b5d20/1f1e80fa808b4929bd9cc0ffc46c4f76/FLAGb5c29b433 [2023-11-17 12:06:53,673 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d33b5d20/1f1e80fa808b4929bd9cc0ffc46c4f76 [2023-11-17 12:06:53,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:06:53,677 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:06:53,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:06:53,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:06:53,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:06:53,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6083d9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53, skipping insertion in model container [2023-11-17 12:06:53,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,707 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:06:53,849 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/parallel-misc-2.wvr.c[2580,2593] [2023-11-17 12:06:53,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:06:53,867 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:06:53,888 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/parallel-misc-2.wvr.c[2580,2593] [2023-11-17 12:06:53,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:06:53,896 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:06:53,897 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:06:53,904 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:06:53,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53 WrapperNode [2023-11-17 12:06:53,905 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:06:53,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:06:53,906 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:06:53,906 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:06:53,912 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,918 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,937 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-17 12:06:53,937 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:06:53,938 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:06:53,938 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:06:53,938 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:06:53,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,952 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,977 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,981 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:06:53,984 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:06:53,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:06:53,984 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:06:53,986 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (1/1) ... [2023-11-17 12:06:53,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:06:54,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:06:54,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 12:06:54,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:06:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:06:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:06:54,062 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:06:54,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:06:54,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:06:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:06:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:06:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:06:54,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:06:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:06:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:06:54,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:06:54,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:06:54,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:06:54,066 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:06:54,192 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:06:54,194 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:06:54,398 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:06:54,576 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:06:54,577 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 12:06:54,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:06:54 BoogieIcfgContainer [2023-11-17 12:06:54,579 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:06:54,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:06:54,581 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:06:54,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:06:54,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:06:53" (1/3) ... [2023-11-17 12:06:54,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421b6383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:06:54, skipping insertion in model container [2023-11-17 12:06:54,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:06:53" (2/3) ... [2023-11-17 12:06:54,589 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@421b6383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:06:54, skipping insertion in model container [2023-11-17 12:06:54,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:06:54" (3/3) ... [2023-11-17 12:06:54,590 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2023-11-17 12:06:54,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:06:54,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:06:54,605 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:06:54,685 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 12:06:54,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2023-11-17 12:06:54,774 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2023-11-17 12:06:54,774 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:06:54,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-11-17 12:06:54,778 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2023-11-17 12:06:54,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2023-11-17 12:06:54,784 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:06:54,796 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 26 transitions, 64 flow [2023-11-17 12:06:54,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 26 transitions, 64 flow [2023-11-17 12:06:54,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 26 transitions, 64 flow [2023-11-17 12:06:54,806 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2023-11-17 12:06:54,807 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:06:54,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 43 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2023-11-17 12:06:54,808 INFO L119 LiptonReduction]: Number of co-enabled transitions 224 [2023-11-17 12:06:55,389 INFO L134 LiptonReduction]: Checked pairs total: 241 [2023-11-17 12:06:55,389 INFO L136 LiptonReduction]: Total number of compositions: 13 [2023-11-17 12:06:55,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:06:55,423 INFO L357 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=false, 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;@16e586c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:06:55,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 12:06:55,432 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:06:55,433 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-17 12:06:55,433 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 12:06:55,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:55,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:55,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:06:55,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:55,439 INFO L85 PathProgramCache]: Analyzing trace with hash 222779808, now seen corresponding path program 1 times [2023-11-17 12:06:55,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238892021] [2023-11-17 12:06:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:06:55,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:55,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238892021] [2023-11-17 12:06:55,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238892021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:55,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:55,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:06:55,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983899090] [2023-11-17 12:06:55,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:55,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:06:55,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:55,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:06:55,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:06:55,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2023-11-17 12:06:55,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:55,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:55,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2023-11-17 12:06:55,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:55,909 INFO L124 PetriNetUnfolderBase]: 65/114 cut-off events. [2023-11-17 12:06:55,910 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-17 12:06:55,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 114 events. 65/114 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 324 event pairs, 9 based on Foata normal form. 1/74 useless extension candidates. Maximal degree in co-relation 179. Up to 85 conditions per place. [2023-11-17 12:06:55,913 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 19 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2023-11-17 12:06:55,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 25 transitions, 117 flow [2023-11-17 12:06:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:06:55,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:06:55,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2023-11-17 12:06:55,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2023-11-17 12:06:55,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 57 transitions. [2023-11-17 12:06:55,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 57 transitions. [2023-11-17 12:06:55,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:55,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 57 transitions. [2023-11-17 12:06:55,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:55,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:55,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:55,935 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 57 transitions. [2023-11-17 12:06:55,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 25 transitions, 117 flow [2023-11-17 12:06:55,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 25 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 12:06:55,941 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2023-11-17 12:06:55,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2023-11-17 12:06:55,946 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-11-17 12:06:55,946 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2023-11-17 12:06:55,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:55,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:55,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:55,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:06:55,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:06:55,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash 874779829, now seen corresponding path program 1 times [2023-11-17 12:06:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:55,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717989498] [2023-11-17 12:06:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:06:56,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:56,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717989498] [2023-11-17 12:06:56,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717989498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:56,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:56,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:06:56,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743403540] [2023-11-17 12:06:56,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:56,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:06:56,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:06:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:06:56,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2023-11-17 12:06:56,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:56,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:56,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2023-11-17 12:06:56,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:56,338 INFO L124 PetriNetUnfolderBase]: 66/126 cut-off events. [2023-11-17 12:06:56,339 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-17 12:06:56,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 126 events. 66/126 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 378 event pairs, 9 based on Foata normal form. 8/130 useless extension candidates. Maximal degree in co-relation 79. Up to 52 conditions per place. [2023-11-17 12:06:56,342 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 29 selfloop transitions, 7 changer transitions 2/40 dead transitions. [2023-11-17 12:06:56,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 40 transitions, 193 flow [2023-11-17 12:06:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:06:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:06:56,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2023-11-17 12:06:56,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2023-11-17 12:06:56,347 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 91 transitions. [2023-11-17 12:06:56,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 91 transitions. [2023-11-17 12:06:56,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:56,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 91 transitions. [2023-11-17 12:06:56,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:56,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:56,352 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:56,352 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 5 states and 91 transitions. [2023-11-17 12:06:56,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 40 transitions, 193 flow [2023-11-17 12:06:56,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 40 transitions, 189 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:06:56,355 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 106 flow [2023-11-17 12:06:56,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2023-11-17 12:06:56,356 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2023-11-17 12:06:56,357 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 106 flow [2023-11-17 12:06:56,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:56,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:56,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:56,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:06:56,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:06:56,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash 624980893, now seen corresponding path program 2 times [2023-11-17 12:06:56,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:56,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214750675] [2023-11-17 12:06:56,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:56,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:06:56,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:56,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214750675] [2023-11-17 12:06:56,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214750675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:56,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:56,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:06:56,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823883654] [2023-11-17 12:06:56,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:56,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:06:56,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:56,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:06:56,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:06:56,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2023-11-17 12:06:56,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:56,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:56,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2023-11-17 12:06:56,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:56,672 INFO L124 PetriNetUnfolderBase]: 59/116 cut-off events. [2023-11-17 12:06:56,673 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2023-11-17 12:06:56,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 116 events. 59/116 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 350 event pairs, 15 based on Foata normal form. 4/115 useless extension candidates. Maximal degree in co-relation 257. Up to 79 conditions per place. [2023-11-17 12:06:56,675 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 20 selfloop transitions, 6 changer transitions 6/34 dead transitions. [2023-11-17 12:06:56,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 34 transitions, 211 flow [2023-11-17 12:06:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:06:56,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:06:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2023-11-17 12:06:56,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-11-17 12:06:56,678 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 72 transitions. [2023-11-17 12:06:56,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 72 transitions. [2023-11-17 12:06:56,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:56,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 72 transitions. [2023-11-17 12:06:56,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:56,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:56,680 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:56,680 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 106 flow. Second operand 4 states and 72 transitions. [2023-11-17 12:06:56,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 34 transitions, 211 flow [2023-11-17 12:06:56,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 34 transitions, 211 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 12:06:56,684 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 123 flow [2023-11-17 12:06:56,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-11-17 12:06:56,686 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 9 predicate places. [2023-11-17 12:06:56,686 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 123 flow [2023-11-17 12:06:56,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:56,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:56,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:56,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:06:56,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:06:56,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:56,688 INFO L85 PathProgramCache]: Analyzing trace with hash 295864852, now seen corresponding path program 1 times [2023-11-17 12:06:56,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:56,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091510319] [2023-11-17 12:06:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:56,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:06:56,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:56,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091510319] [2023-11-17 12:06:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091510319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:06:56,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131221687] [2023-11-17 12:06:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:56,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:06:56,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:06:56,795 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:06:56,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 12:06:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:56,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 12:06:56,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:06:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:06:57,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:06:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:06:57,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131221687] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:06:57,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:06:57,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-17 12:06:57,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380443136] [2023-11-17 12:06:57,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:06:57,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:06:57,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:57,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:06:57,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:06:57,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2023-11-17 12:06:57,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:57,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:57,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2023-11-17 12:06:57,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:57,301 INFO L124 PetriNetUnfolderBase]: 67/139 cut-off events. [2023-11-17 12:06:57,301 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-17 12:06:57,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 139 events. 67/139 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 415 event pairs, 2 based on Foata normal form. 20/156 useless extension candidates. Maximal degree in co-relation 344. Up to 65 conditions per place. [2023-11-17 12:06:57,306 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 35 selfloop transitions, 10 changer transitions 4/51 dead transitions. [2023-11-17 12:06:57,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 51 transitions, 352 flow [2023-11-17 12:06:57,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 12:06:57,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 12:06:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2023-11-17 12:06:57,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-11-17 12:06:57,310 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 112 transitions. [2023-11-17 12:06:57,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 112 transitions. [2023-11-17 12:06:57,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:57,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 112 transitions. [2023-11-17 12:06:57,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:57,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 42.0) internal successors, (294), 7 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:57,313 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 42.0) internal successors, (294), 7 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:57,313 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 123 flow. Second operand 6 states and 112 transitions. [2023-11-17 12:06:57,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 51 transitions, 352 flow [2023-11-17 12:06:57,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 51 transitions, 327 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-17 12:06:57,316 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 192 flow [2023-11-17 12:06:57,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-17 12:06:57,317 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 14 predicate places. [2023-11-17 12:06:57,317 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 192 flow [2023-11-17 12:06:57,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:57,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:57,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:57,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 12:06:57,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:06:57,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:06:57,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash 937075796, now seen corresponding path program 2 times [2023-11-17 12:06:57,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:57,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406568443] [2023-11-17 12:06:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:57,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:57,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:06:57,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406568443] [2023-11-17 12:06:57,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406568443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:06:57,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:06:57,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:06:57,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690750332] [2023-11-17 12:06:57,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:06:57,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:06:57,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:57,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:06:57,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:06:57,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2023-11-17 12:06:57,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:57,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:57,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2023-11-17 12:06:57,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:57,733 INFO L124 PetriNetUnfolderBase]: 69/144 cut-off events. [2023-11-17 12:06:57,734 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2023-11-17 12:06:57,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 144 events. 69/144 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 432 event pairs, 9 based on Foata normal form. 2/142 useless extension candidates. Maximal degree in co-relation 409. Up to 62 conditions per place. [2023-11-17 12:06:57,747 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 35 selfloop transitions, 8 changer transitions 2/47 dead transitions. [2023-11-17 12:06:57,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 387 flow [2023-11-17 12:06:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:06:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:06:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2023-11-17 12:06:57,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2023-11-17 12:06:57,749 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 87 transitions. [2023-11-17 12:06:57,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 87 transitions. [2023-11-17 12:06:57,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:57,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 87 transitions. [2023-11-17 12:06:57,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:57,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:57,750 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 42.0) internal successors, (252), 6 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:57,750 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 192 flow. Second operand 5 states and 87 transitions. [2023-11-17 12:06:57,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 387 flow [2023-11-17 12:06:57,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 366 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-17 12:06:57,754 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 227 flow [2023-11-17 12:06:57,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2023-11-17 12:06:57,755 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 19 predicate places. [2023-11-17 12:06:57,755 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 227 flow [2023-11-17 12:06:57,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:57,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:57,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:57,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:06:57,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:06:57,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1122488514, now seen corresponding path program 1 times [2023-11-17 12:06:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752749439] [2023-11-17 12:06:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:57,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:06:57,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:57,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752749439] [2023-11-17 12:06:57,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752749439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:06:57,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270418373] [2023-11-17 12:06:57,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:57,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:06:57,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:06:57,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:06:57,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 12:06:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:57,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 12:06:57,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:06:58,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:06:58,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:06:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:06:58,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270418373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:06:58,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:06:58,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-17 12:06:58,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757620423] [2023-11-17 12:06:58,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:06:58,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:06:58,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:06:58,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:06:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 12:06:58,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2023-11-17 12:06:58,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 227 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:06:58,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2023-11-17 12:06:58,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:06:58,289 INFO L124 PetriNetUnfolderBase]: 155/304 cut-off events. [2023-11-17 12:06:58,289 INFO L125 PetriNetUnfolderBase]: For 908/908 co-relation queries the response was YES. [2023-11-17 12:06:58,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 304 events. 155/304 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1121 event pairs, 20 based on Foata normal form. 28/330 useless extension candidates. Maximal degree in co-relation 925. Up to 125 conditions per place. [2023-11-17 12:06:58,292 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 63 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2023-11-17 12:06:58,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 80 transitions, 705 flow [2023-11-17 12:06:58,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:06:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:06:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2023-11-17 12:06:58,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741496598639456 [2023-11-17 12:06:58,294 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 110 transitions. [2023-11-17 12:06:58,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 110 transitions. [2023-11-17 12:06:58,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:06:58,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 110 transitions. [2023-11-17 12:06:58,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 42.0) internal successors, (336), 8 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,296 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 42.0) internal successors, (336), 8 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,296 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 227 flow. Second operand 7 states and 110 transitions. [2023-11-17 12:06:58,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 80 transitions, 705 flow [2023-11-17 12:06:58,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 80 transitions, 701 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-17 12:06:58,302 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 373 flow [2023-11-17 12:06:58,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=373, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-11-17 12:06:58,305 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 27 predicate places. [2023-11-17 12:06:58,305 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 373 flow [2023-11-17 12:06:58,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:06:58,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:06:58,305 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:06:58,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 12:06:58,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-17 12:06:58,513 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:06:58,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:06:58,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1884522538, now seen corresponding path program 2 times [2023-11-17 12:06:58,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:06:58,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167053121] [2023-11-17 12:06:58,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:06:58,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:06:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:06:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:06:59,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:06:59,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167053121] [2023-11-17 12:06:59,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167053121] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:06:59,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519184939] [2023-11-17 12:06:59,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:06:59,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:06:59,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:06:59,422 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:06:59,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 12:06:59,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:06:59,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:06:59,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:06:59,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:07:00,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:00,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:07:00,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519184939] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:00,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:00,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2023-11-17 12:07:00,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278204992] [2023-11-17 12:07:00,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:00,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:07:00,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:00,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:07:00,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-17 12:07:00,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2023-11-17 12:07:00,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 373 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:00,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:00,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2023-11-17 12:07:00,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:01,173 INFO L124 PetriNetUnfolderBase]: 311/629 cut-off events. [2023-11-17 12:07:01,173 INFO L125 PetriNetUnfolderBase]: For 2928/2928 co-relation queries the response was YES. [2023-11-17 12:07:01,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3118 conditions, 629 events. 311/629 cut-off events. For 2928/2928 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3087 event pairs, 24 based on Foata normal form. 6/632 useless extension candidates. Maximal degree in co-relation 1467. Up to 247 conditions per place. [2023-11-17 12:07:01,180 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 65 selfloop transitions, 54 changer transitions 4/125 dead transitions. [2023-11-17 12:07:01,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 125 transitions, 1304 flow [2023-11-17 12:07:01,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 12:07:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 12:07:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2023-11-17 12:07:01,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2023-11-17 12:07:01,182 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 132 transitions. [2023-11-17 12:07:01,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 132 transitions. [2023-11-17 12:07:01,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:07:01,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 132 transitions. [2023-11-17 12:07:01,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:01,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 42.0) internal successors, (504), 12 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:01,184 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 42.0) internal successors, (504), 12 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:01,184 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 373 flow. Second operand 11 states and 132 transitions. [2023-11-17 12:07:01,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 125 transitions, 1304 flow [2023-11-17 12:07:01,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 125 transitions, 1193 flow, removed 51 selfloop flow, removed 2 redundant places. [2023-11-17 12:07:01,194 INFO L231 Difference]: Finished difference. Result has 58 places, 81 transitions, 906 flow [2023-11-17 12:07:01,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=906, PETRI_PLACES=58, PETRI_TRANSITIONS=81} [2023-11-17 12:07:01,194 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 38 predicate places. [2023-11-17 12:07:01,195 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 81 transitions, 906 flow [2023-11-17 12:07:01,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:01,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:01,195 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:01,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 12:07:01,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:01,403 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:07:01,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -669042694, now seen corresponding path program 3 times [2023-11-17 12:07:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419937455] [2023-11-17 12:07:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:02,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:07:02,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:02,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419937455] [2023-11-17 12:07:02,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419937455] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:07:02,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138383040] [2023-11-17 12:07:02,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:07:02,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:02,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:07:02,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:07:02,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 12:07:02,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 12:07:02,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:07:02,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:07:02,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:02,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:03,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138383040] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:03,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:03,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-11-17 12:07:03,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258889626] [2023-11-17 12:07:03,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:03,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 12:07:03,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 12:07:03,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-17 12:07:03,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 42 [2023-11-17 12:07:03,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 81 transitions, 906 flow. Second operand has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:03,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:03,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 42 [2023-11-17 12:07:03,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:05,164 INFO L124 PetriNetUnfolderBase]: 428/884 cut-off events. [2023-11-17 12:07:05,165 INFO L125 PetriNetUnfolderBase]: For 4923/4923 co-relation queries the response was YES. [2023-11-17 12:07:05,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 884 events. 428/884 cut-off events. For 4923/4923 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4920 event pairs, 12 based on Foata normal form. 6/887 useless extension candidates. Maximal degree in co-relation 4105. Up to 341 conditions per place. [2023-11-17 12:07:05,175 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 58 selfloop transitions, 105 changer transitions 4/169 dead transitions. [2023-11-17 12:07:05,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 169 transitions, 1959 flow [2023-11-17 12:07:05,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 12:07:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 12:07:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2023-11-17 12:07:05,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2653061224489796 [2023-11-17 12:07:05,177 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 156 transitions. [2023-11-17 12:07:05,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 156 transitions. [2023-11-17 12:07:05,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:07:05,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 156 transitions. [2023-11-17 12:07:05,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 11.142857142857142) internal successors, (156), 14 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:05,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 42.0) internal successors, (630), 15 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:05,180 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 42.0) internal successors, (630), 15 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:05,180 INFO L175 Difference]: Start difference. First operand has 58 places, 81 transitions, 906 flow. Second operand 14 states and 156 transitions. [2023-11-17 12:07:05,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 169 transitions, 1959 flow [2023-11-17 12:07:05,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 169 transitions, 1796 flow, removed 79 selfloop flow, removed 1 redundant places. [2023-11-17 12:07:05,202 INFO L231 Difference]: Finished difference. Result has 71 places, 118 transitions, 1431 flow [2023-11-17 12:07:05,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1431, PETRI_PLACES=71, PETRI_TRANSITIONS=118} [2023-11-17 12:07:05,205 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 51 predicate places. [2023-11-17 12:07:05,205 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 118 transitions, 1431 flow [2023-11-17 12:07:05,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:05,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:05,205 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:05,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 12:07:05,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:05,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:07:05,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:05,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1842512171, now seen corresponding path program 4 times [2023-11-17 12:07:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:05,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828139323] [2023-11-17 12:07:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:05,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:05,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828139323] [2023-11-17 12:07:05,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828139323] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:07:05,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131293901] [2023-11-17 12:07:05,686 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:07:05,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:05,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:07:05,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:07:05,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 12:07:05,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:07:05,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:07:05,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 12:07:05,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:06,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:06,969 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:06,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131293901] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:06,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:06,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-11-17 12:07:06,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012730018] [2023-11-17 12:07:06,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:06,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 12:07:06,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:06,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 12:07:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2023-11-17 12:07:06,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2023-11-17 12:07:06,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 118 transitions, 1431 flow. Second operand has 19 states, 19 states have (on average 11.157894736842104) internal successors, (212), 19 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:06,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:06,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2023-11-17 12:07:06,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:09,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:07:13,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:07:21,196 INFO L124 PetriNetUnfolderBase]: 1179/2447 cut-off events. [2023-11-17 12:07:21,196 INFO L125 PetriNetUnfolderBase]: For 13384/13384 co-relation queries the response was YES. [2023-11-17 12:07:21,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12937 conditions, 2447 events. 1179/2447 cut-off events. For 13384/13384 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 16715 event pairs, 26 based on Foata normal form. 136/2581 useless extension candidates. Maximal degree in co-relation 11225. Up to 999 conditions per place. [2023-11-17 12:07:21,220 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 228 selfloop transitions, 191 changer transitions 47/468 dead transitions. [2023-11-17 12:07:21,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 468 transitions, 5875 flow [2023-11-17 12:07:21,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 12:07:21,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 12:07:21,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 461 transitions. [2023-11-17 12:07:21,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3430059523809524 [2023-11-17 12:07:21,223 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 461 transitions. [2023-11-17 12:07:21,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 461 transitions. [2023-11-17 12:07:21,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:07:21,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 461 transitions. [2023-11-17 12:07:21,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 14.40625) internal successors, (461), 32 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:21,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 42.0) internal successors, (1386), 33 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:21,227 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 42.0) internal successors, (1386), 33 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:21,227 INFO L175 Difference]: Start difference. First operand has 71 places, 118 transitions, 1431 flow. Second operand 32 states and 461 transitions. [2023-11-17 12:07:21,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 468 transitions, 5875 flow [2023-11-17 12:07:21,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 468 transitions, 5077 flow, removed 319 selfloop flow, removed 7 redundant places. [2023-11-17 12:07:21,353 INFO L231 Difference]: Finished difference. Result has 113 places, 294 transitions, 3854 flow [2023-11-17 12:07:21,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=3854, PETRI_PLACES=113, PETRI_TRANSITIONS=294} [2023-11-17 12:07:21,355 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 93 predicate places. [2023-11-17 12:07:21,355 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 294 transitions, 3854 flow [2023-11-17 12:07:21,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.157894736842104) internal successors, (212), 19 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:21,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:07:21,355 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:07:21,361 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 12:07:21,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:21,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:07:21,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:07:21,562 INFO L85 PathProgramCache]: Analyzing trace with hash 848341667, now seen corresponding path program 5 times [2023-11-17 12:07:21,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:07:21,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222799589] [2023-11-17 12:07:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:07:21,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:07:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:07:22,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:22,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:07:22,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222799589] [2023-11-17 12:07:22,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222799589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:07:22,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929016499] [2023-11-17 12:07:22,255 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:07:22,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:07:22,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:07:22,257 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:07:22,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 12:07:22,367 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 12:07:22,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:07:22,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 12:07:22,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:07:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:22,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:07:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:07:24,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929016499] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:07:24,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:07:24,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-11-17 12:07:24,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155833326] [2023-11-17 12:07:24,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:07:24,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 12:07:24,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:07:24,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 12:07:24,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-11-17 12:07:24,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2023-11-17 12:07:24,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 294 transitions, 3854 flow. Second operand has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:07:24,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:07:24,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2023-11-17 12:07:24,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:07:35,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 12:07:42,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:07:58,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:08:12,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:08:19,266 INFO L124 PetriNetUnfolderBase]: 3140/6095 cut-off events. [2023-11-17 12:08:19,266 INFO L125 PetriNetUnfolderBase]: For 46094/46094 co-relation queries the response was YES. [2023-11-17 12:08:19,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36239 conditions, 6095 events. 3140/6095 cut-off events. For 46094/46094 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 45320 event pairs, 94 based on Foata normal form. 152/6245 useless extension candidates. Maximal degree in co-relation 35862. Up to 2559 conditions per place. [2023-11-17 12:08:19,350 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 439 selfloop transitions, 713 changer transitions 14/1168 dead transitions. [2023-11-17 12:08:19,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 1168 transitions, 17213 flow [2023-11-17 12:08:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 12:08:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 12:08:19,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 443 transitions. [2023-11-17 12:08:19,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31962481962481964 [2023-11-17 12:08:19,354 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 443 transitions. [2023-11-17 12:08:19,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 443 transitions. [2023-11-17 12:08:19,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:19,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 443 transitions. [2023-11-17 12:08:19,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 13.424242424242424) internal successors, (443), 33 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:19,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 42.0) internal successors, (1428), 34 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:19,358 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 42.0) internal successors, (1428), 34 states have internal predecessors, (1428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:19,359 INFO L175 Difference]: Start difference. First operand has 113 places, 294 transitions, 3854 flow. Second operand 33 states and 443 transitions. [2023-11-17 12:08:19,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 1168 transitions, 17213 flow [2023-11-17 12:08:19,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 1168 transitions, 15226 flow, removed 992 selfloop flow, removed 3 redundant places. [2023-11-17 12:08:19,756 INFO L231 Difference]: Finished difference. Result has 158 places, 940 transitions, 14262 flow [2023-11-17 12:08:19,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3347, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=14262, PETRI_PLACES=158, PETRI_TRANSITIONS=940} [2023-11-17 12:08:19,758 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 138 predicate places. [2023-11-17 12:08:19,758 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 940 transitions, 14262 flow [2023-11-17 12:08:19,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.0) internal successors, (171), 19 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:19,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:19,758 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:08:19,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 12:08:19,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:19,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:08:19,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:19,967 INFO L85 PathProgramCache]: Analyzing trace with hash 458435359, now seen corresponding path program 6 times [2023-11-17 12:08:19,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:19,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407402070] [2023-11-17 12:08:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:19,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:08:20,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:20,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407402070] [2023-11-17 12:08:20,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407402070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:20,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267974260] [2023-11-17 12:08:20,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 12:08:20,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:20,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:20,422 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:08:20,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 12:08:20,550 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 12:08:20,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:08:20,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 12:08:20,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:08:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:08:20,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:08:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:08:21,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267974260] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:08:21,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:08:21,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 16 [2023-11-17 12:08:21,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543724512] [2023-11-17 12:08:21,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:08:21,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 12:08:21,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:21,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 12:08:21,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-17 12:08:21,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2023-11-17 12:08:21,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 940 transitions, 14262 flow. Second operand has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:21,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:21,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2023-11-17 12:08:21,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:08:27,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:08:31,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:08:34,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:08:36,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:08:40,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:08:46,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:08:50,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:08:51,788 INFO L124 PetriNetUnfolderBase]: 6182/12000 cut-off events. [2023-11-17 12:08:51,789 INFO L125 PetriNetUnfolderBase]: For 151328/151328 co-relation queries the response was YES. [2023-11-17 12:08:51,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82282 conditions, 12000 events. 6182/12000 cut-off events. For 151328/151328 co-relation queries the response was YES. Maximal size of possible extension queue 656. Compared 100715 event pairs, 90 based on Foata normal form. 1392/13390 useless extension candidates. Maximal degree in co-relation 80964. Up to 3359 conditions per place. [2023-11-17 12:08:51,942 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 1092 selfloop transitions, 957 changer transitions 142/2193 dead transitions. [2023-11-17 12:08:51,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 2193 transitions, 37409 flow [2023-11-17 12:08:51,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-17 12:08:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-17 12:08:51,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 672 transitions. [2023-11-17 12:08:51,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34782608695652173 [2023-11-17 12:08:51,949 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 672 transitions. [2023-11-17 12:08:51,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 672 transitions. [2023-11-17 12:08:51,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:08:51,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 672 transitions. [2023-11-17 12:08:51,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 14.608695652173912) internal successors, (672), 46 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:51,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 42.0) internal successors, (1974), 47 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:51,957 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 42.0) internal successors, (1974), 47 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:51,958 INFO L175 Difference]: Start difference. First operand has 158 places, 940 transitions, 14262 flow. Second operand 46 states and 672 transitions. [2023-11-17 12:08:51,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 2193 transitions, 37409 flow [2023-11-17 12:08:54,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 2193 transitions, 35861 flow, removed 754 selfloop flow, removed 4 redundant places. [2023-11-17 12:08:54,105 INFO L231 Difference]: Finished difference. Result has 227 places, 1546 transitions, 27112 flow [2023-11-17 12:08:54,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13043, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=902, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=27112, PETRI_PLACES=227, PETRI_TRANSITIONS=1546} [2023-11-17 12:08:54,107 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 207 predicate places. [2023-11-17 12:08:54,107 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 1546 transitions, 27112 flow [2023-11-17 12:08:54,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.588235294117647) internal successors, (197), 17 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:54,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:08:54,107 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:08:54,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 12:08:54,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:54,314 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:08:54,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:08:54,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1733184116, now seen corresponding path program 7 times [2023-11-17 12:08:54,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:08:54,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059895024] [2023-11-17 12:08:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:08:54,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:08:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:08:54,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:08:54,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059895024] [2023-11-17 12:08:54,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059895024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:08:54,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432925444] [2023-11-17 12:08:54,924 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 12:08:54,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:08:54,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:08:54,926 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:08:54,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 12:08:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:08:55,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 12:08:55,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:08:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:08:55,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:08:57,975 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:08:57,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432925444] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:08:57,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:08:57,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 25 [2023-11-17 12:08:57,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521671557] [2023-11-17 12:08:57,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:08:57,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 12:08:57,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:08:57,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 12:08:57,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2023-11-17 12:08:57,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2023-11-17 12:08:57,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 1546 transitions, 27112 flow. Second operand has 26 states, 26 states have (on average 10.538461538461538) internal successors, (274), 26 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:08:57,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:08:57,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2023-11-17 12:08:57,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:09:06,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:08,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:32,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:34,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:36,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:40,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:41,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:47,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:49,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:52,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:54,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:57,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:09:59,648 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (mod (+ c_~i2~0 1) 4294967296))) (let ((.cse14 (+ 1 .cse6)) (.cse15 (mod (+ 2 c_~i2~0) 4294967296)) (.cse7 (* (mod c_~N~0 2147483648) 2)) (.cse13 (+ (mod c_~i1~0 4294967296) 1)) (.cse3 (div c_~N~0 2147483648))) (let ((.cse0 (* .cse3 4294967296)) (.cse4 (* c_~N~0 2)) (.cse8 (mod c_~i2~0 4294967296)) (.cse5 (< .cse7 .cse13)) (.cse10 (< .cse15 .cse7)) (.cse11 (< .cse7 .cse14))) (and (let ((.cse2 (* (- 1) c_~i2~0))) (let ((.cse1 (* (div (+ .cse4 (- 3) .cse2) 4294967296) 4294967296))) (or (and (<= (+ .cse0 1) (+ .cse1 c_~i2~0)) (<= c_~d2~0 (* 256 (div c_~d2~0 256))) (<= 0 c_~d2~0)) (< (+ (* (div (+ c_~i1~0 .cse2 (* (- 2) c_~N~0)) 4294967296) 4294967296) (* 8589934592 .cse3) 4294967299) (+ c_~i1~0 .cse1))))) (or .cse5 (< .cse6 .cse7) (< .cse7 (+ .cse8 1))) (let ((.cse9 (* (div c_~i2~0 4294967296) 4294967296))) (or (< (+ .cse0 c_~i2~0 1) (+ .cse4 .cse9)) (< (+ c_~i1~0 .cse0 1 .cse9) (+ .cse4 c_~i2~0 (* (div (+ c_~i1~0 (- 4294967300)) 4294967296) 4294967296))))) (or (< .cse8 .cse7) .cse5) (or .cse5 .cse10 .cse11) (or .cse10 .cse11 (< .cse7 (+ (mod (+ c_~i1~0 3) 4294967296) 1))) (let ((.cse12 (* (div .cse15 2) 2))) (or (< .cse12 (+ (mod (+ c_~i1~0 4) 4294967296) 1)) (< .cse12 .cse13) (< .cse12 .cse14))) (or .cse10 (< .cse7 (+ (mod (+ c_~i1~0 1) 4294967296) 1)) .cse11))))) is different from false [2023-11-17 12:10:01,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:10:11,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 12:10:13,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:10:14,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:10:17,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:10:19,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:10:42,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:10:44,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:11:10,305 WARN L293 SmtUtils]: Spent 11.81s on a formula simplification. DAG size of input: 88 DAG size of output: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 12:11:12,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:11:17,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:11:23,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:11:43,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 12:12:13,332 WARN L293 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 99 DAG size of output: 63 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-17 12:12:16,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:12:24,712 INFO L124 PetriNetUnfolderBase]: 6425/12236 cut-off events. [2023-11-17 12:12:24,713 INFO L125 PetriNetUnfolderBase]: For 230340/230340 co-relation queries the response was YES. [2023-11-17 12:12:24,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97912 conditions, 12236 events. 6425/12236 cut-off events. For 230340/230340 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 100703 event pairs, 344 based on Foata normal form. 200/12434 useless extension candidates. Maximal degree in co-relation 97210. Up to 3522 conditions per place. [2023-11-17 12:12:24,849 INFO L140 encePairwiseOnDemand]: 36/42 looper letters, 1188 selfloop transitions, 878 changer transitions 44/2112 dead transitions. [2023-11-17 12:12:24,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 2112 transitions, 41059 flow [2023-11-17 12:12:24,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-17 12:12:24,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-17 12:12:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 674 transitions. [2023-11-17 12:12:24,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3275024295432459 [2023-11-17 12:12:24,853 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 674 transitions. [2023-11-17 12:12:24,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 674 transitions. [2023-11-17 12:12:24,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:24,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 674 transitions. [2023-11-17 12:12:24,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 13.755102040816327) internal successors, (674), 49 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:24,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 42.0) internal successors, (2100), 50 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:24,858 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 42.0) internal successors, (2100), 50 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:24,858 INFO L175 Difference]: Start difference. First operand has 227 places, 1546 transitions, 27112 flow. Second operand 49 states and 674 transitions. [2023-11-17 12:12:24,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 2112 transitions, 41059 flow [2023-11-17 12:12:28,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 2112 transitions, 38194 flow, removed 1412 selfloop flow, removed 8 redundant places. [2023-11-17 12:12:28,429 INFO L231 Difference]: Finished difference. Result has 283 places, 1850 transitions, 33140 flow [2023-11-17 12:12:28,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=24737, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=583, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=907, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=33140, PETRI_PLACES=283, PETRI_TRANSITIONS=1850} [2023-11-17 12:12:28,430 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 263 predicate places. [2023-11-17 12:12:28,431 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 1850 transitions, 33140 flow [2023-11-17 12:12:28,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.538461538461538) internal successors, (274), 26 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:28,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:28,431 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:12:28,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 12:12:28,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-17 12:12:28,640 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:12:28,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:28,641 INFO L85 PathProgramCache]: Analyzing trace with hash -969952032, now seen corresponding path program 8 times [2023-11-17 12:12:28,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:28,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035030359] [2023-11-17 12:12:28,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:28,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:28,925 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:12:28,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:28,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035030359] [2023-11-17 12:12:28,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035030359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:12:28,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503994520] [2023-11-17 12:12:28,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:12:28,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:12:28,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:12:28,927 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:12:28,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 12:12:29,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:12:29,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:12:29,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 12:12:29,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:12:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:12:29,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:12:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:12:30,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503994520] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:12:30,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:12:30,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-11-17 12:12:30,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740569231] [2023-11-17 12:12:30,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:12:30,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 12:12:30,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:30,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 12:12:30,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-11-17 12:12:30,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2023-11-17 12:12:30,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 1850 transitions, 33140 flow. Second operand has 22 states, 22 states have (on average 11.272727272727273) internal successors, (248), 22 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:30,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:30,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2023-11-17 12:12:30,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:40,162 INFO L124 PetriNetUnfolderBase]: 6738/12801 cut-off events. [2023-11-17 12:12:40,162 INFO L125 PetriNetUnfolderBase]: For 272927/272927 co-relation queries the response was YES. [2023-11-17 12:12:40,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108332 conditions, 12801 events. 6738/12801 cut-off events. For 272927/272927 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 106213 event pairs, 0 based on Foata normal form. 107/12906 useless extension candidates. Maximal degree in co-relation 108207. Up to 4699 conditions per place. [2023-11-17 12:12:40,329 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 1023 selfloop transitions, 1159 changer transitions 0/2184 dead transitions. [2023-11-17 12:12:40,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 2184 transitions, 43376 flow [2023-11-17 12:12:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 12:12:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 12:12:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 368 transitions. [2023-11-17 12:12:40,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3504761904761905 [2023-11-17 12:12:40,331 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 368 transitions. [2023-11-17 12:12:40,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 368 transitions. [2023-11-17 12:12:40,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:40,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 368 transitions. [2023-11-17 12:12:40,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 14.72) internal successors, (368), 25 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:40,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 42.0) internal successors, (1092), 26 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:40,334 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 42.0) internal successors, (1092), 26 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:40,334 INFO L175 Difference]: Start difference. First operand has 283 places, 1850 transitions, 33140 flow. Second operand 25 states and 368 transitions. [2023-11-17 12:12:40,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 2184 transitions, 43376 flow [2023-11-17 12:12:45,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 2184 transitions, 39302 flow, removed 1448 selfloop flow, removed 16 redundant places. [2023-11-17 12:12:45,932 INFO L231 Difference]: Finished difference. Result has 295 places, 2024 transitions, 35913 flow [2023-11-17 12:12:45,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=29612, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=979, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=835, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=35913, PETRI_PLACES=295, PETRI_TRANSITIONS=2024} [2023-11-17 12:12:45,934 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 275 predicate places. [2023-11-17 12:12:45,934 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 2024 transitions, 35913 flow [2023-11-17 12:12:45,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.272727272727273) internal successors, (248), 22 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:45,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:12:45,935 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:12:45,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 12:12:46,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 12:12:46,142 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:12:46,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:12:46,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2115717644, now seen corresponding path program 9 times [2023-11-17 12:12:46,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:12:46,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556590192] [2023-11-17 12:12:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:12:46,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:12:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:12:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:12:46,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:12:46,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556590192] [2023-11-17 12:12:46,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556590192] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:12:46,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58983709] [2023-11-17 12:12:46,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:12:46,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:12:46,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:12:46,421 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:12:46,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 12:12:46,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 12:12:46,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:12:46,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 12:12:46,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:12:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:12:46,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:12:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:12:47,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58983709] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:12:47,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:12:47,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2023-11-17 12:12:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287688704] [2023-11-17 12:12:47,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:12:47,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 12:12:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:12:47,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 12:12:47,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2023-11-17 12:12:47,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2023-11-17 12:12:47,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 2024 transitions, 35913 flow. Second operand has 21 states, 21 states have (on average 11.285714285714286) internal successors, (237), 21 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:47,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:12:47,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2023-11-17 12:12:47,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:12:56,112 INFO L124 PetriNetUnfolderBase]: 7593/14247 cut-off events. [2023-11-17 12:12:56,112 INFO L125 PetriNetUnfolderBase]: For 281284/281284 co-relation queries the response was YES. [2023-11-17 12:12:56,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122058 conditions, 14247 events. 7593/14247 cut-off events. For 281284/281284 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 119457 event pairs, 8 based on Foata normal form. 34/14279 useless extension candidates. Maximal degree in co-relation 121317. Up to 5526 conditions per place. [2023-11-17 12:12:56,273 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 1071 selfloop transitions, 1389 changer transitions 4/2466 dead transitions. [2023-11-17 12:12:56,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 2466 transitions, 49001 flow [2023-11-17 12:12:56,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 12:12:56,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 12:12:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 347 transitions. [2023-11-17 12:12:56,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34424603174603174 [2023-11-17 12:12:56,275 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 347 transitions. [2023-11-17 12:12:56,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 347 transitions. [2023-11-17 12:12:56,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:12:56,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 347 transitions. [2023-11-17 12:12:56,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 14.458333333333334) internal successors, (347), 24 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:56,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 42.0) internal successors, (1050), 25 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:56,278 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 42.0) internal successors, (1050), 25 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:12:56,278 INFO L175 Difference]: Start difference. First operand has 295 places, 2024 transitions, 35913 flow. Second operand 24 states and 347 transitions. [2023-11-17 12:12:56,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 2466 transitions, 49001 flow [2023-11-17 12:13:03,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 2466 transitions, 47722 flow, removed 582 selfloop flow, removed 7 redundant places. [2023-11-17 12:13:03,421 INFO L231 Difference]: Finished difference. Result has 320 places, 2330 transitions, 45713 flow [2023-11-17 12:13:03,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=35091, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2017, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=859, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=45713, PETRI_PLACES=320, PETRI_TRANSITIONS=2330} [2023-11-17 12:13:03,424 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 300 predicate places. [2023-11-17 12:13:03,424 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 2330 transitions, 45713 flow [2023-11-17 12:13:03,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.285714285714286) internal successors, (237), 21 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:13:03,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:03,425 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:03,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 12:13:03,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 12:13:03,631 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:13:03,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1440660068, now seen corresponding path program 10 times [2023-11-17 12:13:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:03,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176482099] [2023-11-17 12:13:03,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:03,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:13:03,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176482099] [2023-11-17 12:13:03,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176482099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:13:03,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475290523] [2023-11-17 12:13:03,886 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:13:03,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:13:03,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:13:03,888 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:13:03,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 12:13:04,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:13:04,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:13:04,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 12:13:04,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:13:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:13:04,288 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:13:04,688 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:13:04,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475290523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:13:04,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:13:04,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2023-11-17 12:13:04,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806171345] [2023-11-17 12:13:04,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:13:04,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 12:13:04,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:04,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 12:13:04,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-11-17 12:13:04,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2023-11-17 12:13:04,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 2330 transitions, 45713 flow. Second operand has 21 states, 21 states have (on average 11.095238095238095) internal successors, (233), 21 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:13:04,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:04,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2023-11-17 12:13:04,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:14,717 INFO L124 PetriNetUnfolderBase]: 8023/15085 cut-off events. [2023-11-17 12:13:14,717 INFO L125 PetriNetUnfolderBase]: For 318396/318396 co-relation queries the response was YES. [2023-11-17 12:13:14,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135977 conditions, 15085 events. 8023/15085 cut-off events. For 318396/318396 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 128125 event pairs, 250 based on Foata normal form. 16/15099 useless extension candidates. Maximal degree in co-relation 135219. Up to 4010 conditions per place. [2023-11-17 12:13:14,954 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 1263 selfloop transitions, 1500 changer transitions 12/2777 dead transitions. [2023-11-17 12:13:14,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 2777 transitions, 58914 flow [2023-11-17 12:13:14,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-17 12:13:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-17 12:13:14,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 459 transitions. [2023-11-17 12:13:14,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2023-11-17 12:13:14,956 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 459 transitions. [2023-11-17 12:13:14,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 459 transitions. [2023-11-17 12:13:14,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:13:14,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 459 transitions. [2023-11-17 12:13:14,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 13.5) internal successors, (459), 34 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:13:14,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 42.0) internal successors, (1470), 35 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:13:14,959 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 42.0) internal successors, (1470), 35 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:13:14,959 INFO L175 Difference]: Start difference. First operand has 320 places, 2330 transitions, 45713 flow. Second operand 34 states and 459 transitions. [2023-11-17 12:13:14,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 2777 transitions, 58914 flow [2023-11-17 12:13:24,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 2777 transitions, 57558 flow, removed 645 selfloop flow, removed 7 redundant places. [2023-11-17 12:13:25,053 INFO L231 Difference]: Finished difference. Result has 348 places, 2521 transitions, 51852 flow [2023-11-17 12:13:25,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=44338, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=973, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=51852, PETRI_PLACES=348, PETRI_TRANSITIONS=2521} [2023-11-17 12:13:25,056 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 328 predicate places. [2023-11-17 12:13:25,056 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 2521 transitions, 51852 flow [2023-11-17 12:13:25,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.095238095238095) internal successors, (233), 21 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:13:25,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:13:25,057 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:13:25,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 12:13:25,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-17 12:13:25,263 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:13:25,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:13:25,263 INFO L85 PathProgramCache]: Analyzing trace with hash 512441922, now seen corresponding path program 11 times [2023-11-17 12:13:25,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:13:25,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202335257] [2023-11-17 12:13:25,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:13:25,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:13:25,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:13:25,525 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:13:25,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:13:25,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202335257] [2023-11-17 12:13:25,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202335257] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:13:25,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799897519] [2023-11-17 12:13:25,526 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:13:25,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:13:25,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:13:25,529 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:13:25,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 12:13:25,741 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 12:13:25,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:13:25,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 12:13:25,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:13:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:13:26,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:13:27,373 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:13:27,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799897519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:13:27,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:13:27,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2023-11-17 12:13:27,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197805590] [2023-11-17 12:13:27,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:13:27,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 12:13:27,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:13:27,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 12:13:27,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=417, Unknown=0, NotChecked=0, Total=600 [2023-11-17 12:13:27,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 42 [2023-11-17 12:13:27,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 2521 transitions, 51852 flow. Second operand has 25 states, 25 states have (on average 8.76) internal successors, (219), 25 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:13:27,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:13:27,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 42 [2023-11-17 12:13:27,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:13:28,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:13:30,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:13:50,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:13:53,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:13:59,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 12:14:11,291 INFO L124 PetriNetUnfolderBase]: 10113/18782 cut-off events. [2023-11-17 12:14:11,291 INFO L125 PetriNetUnfolderBase]: For 422790/422790 co-relation queries the response was YES. [2023-11-17 12:14:11,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178837 conditions, 18782 events. 10113/18782 cut-off events. For 422790/422790 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 162153 event pairs, 0 based on Foata normal form. 88/18868 useless extension candidates. Maximal degree in co-relation 178279. Up to 6089 conditions per place. [2023-11-17 12:14:11,577 INFO L140 encePairwiseOnDemand]: 37/42 looper letters, 1197 selfloop transitions, 2246 changer transitions 4/3449 dead transitions. [2023-11-17 12:14:11,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 3449 transitions, 79499 flow [2023-11-17 12:14:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-17 12:14:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-17 12:14:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 447 transitions. [2023-11-17 12:14:11,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29563492063492064 [2023-11-17 12:14:11,580 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 447 transitions. [2023-11-17 12:14:11,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 447 transitions. [2023-11-17 12:14:11,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:14:11,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 447 transitions. [2023-11-17 12:14:11,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 12.416666666666666) internal successors, (447), 36 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:14:11,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 42.0) internal successors, (1554), 37 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:14:11,583 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 42.0) internal successors, (1554), 37 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:14:11,583 INFO L175 Difference]: Start difference. First operand has 348 places, 2521 transitions, 51852 flow. Second operand 36 states and 447 transitions. [2023-11-17 12:14:11,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 3449 transitions, 79499 flow [2023-11-17 12:14:29,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 3449 transitions, 76955 flow, removed 1035 selfloop flow, removed 9 redundant places. [2023-11-17 12:14:29,106 INFO L231 Difference]: Finished difference. Result has 385 places, 3337 transitions, 76804 flow [2023-11-17 12:14:29,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=50126, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1539, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=840, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=76804, PETRI_PLACES=385, PETRI_TRANSITIONS=3337} [2023-11-17 12:14:29,109 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 365 predicate places. [2023-11-17 12:14:29,109 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 3337 transitions, 76804 flow [2023-11-17 12:14:29,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.76) internal successors, (219), 25 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:14:29,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:14:29,110 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:14:29,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-17 12:14:29,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-17 12:14:29,316 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 12:14:29,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:14:29,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1767062588, now seen corresponding path program 12 times [2023-11-17 12:14:29,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:14:29,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182970166] [2023-11-17 12:14:29,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:14:29,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:14:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:14:29,726 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:14:29,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:14:29,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182970166] [2023-11-17 12:14:29,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182970166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:14:29,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962899154] [2023-11-17 12:14:29,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 12:14:29,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:14:29,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:14:29,727 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:14:29,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 12:14:29,916 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 12:14:29,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:14:29,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 12:14:29,919 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:14:30,135 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:14:30,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:14:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 12:14:30,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962899154] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:14:30,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:14:30,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 23 [2023-11-17 12:14:30,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096052811] [2023-11-17 12:14:30,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:14:30,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 12:14:30,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:14:30,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 12:14:30,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2023-11-17 12:14:30,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2023-11-17 12:14:30,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 3337 transitions, 76804 flow. Second operand has 24 states, 24 states have (on average 13.041666666666666) internal successors, (313), 24 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:14:30,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:14:30,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2023-11-17 12:14:30,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:15:56,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-11-17 12:16:01,210 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:16:01,210 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 [2023-11-17 12:16:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-17 12:16:01,993 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 12:16:01,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-17 12:16:02,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 12:16:02,194 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-7-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-6-1 context. [2023-11-17 12:16:02,196 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 12:16:02,196 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 12:16:02,196 INFO L445 BasicCegarLoop]: Path program histogram: [12, 2, 2, 1] [2023-11-17 12:16:02,200 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:16:02,200 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:16:02,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:16:02 BasicIcfg [2023-11-17 12:16:02,202 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:16:02,202 INFO L158 Benchmark]: Toolchain (without parser) took 548525.47ms. Allocated memory was 290.5MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 232.7MB in the beginning and 852.0MB in the end (delta: -619.3MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-11-17 12:16:02,202 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 198.2MB. Free memory is still 146.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:16:02,203 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.67ms. Allocated memory is still 290.5MB. Free memory was 232.4MB in the beginning and 221.1MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 12:16:02,203 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.50ms. Allocated memory is still 290.5MB. Free memory was 221.1MB in the beginning and 219.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:16:02,203 INFO L158 Benchmark]: Boogie Preprocessor took 43.15ms. Allocated memory is still 290.5MB. Free memory was 219.5MB in the beginning and 218.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:16:02,203 INFO L158 Benchmark]: RCFGBuilder took 594.95ms. Allocated memory is still 290.5MB. Free memory was 218.1MB in the beginning and 190.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2023-11-17 12:16:02,204 INFO L158 Benchmark]: TraceAbstraction took 547620.97ms. Allocated memory was 290.5MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 190.1MB in the beginning and 852.0MB in the end (delta: -661.9MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-11-17 12:16:02,205 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 198.2MB. Free memory is still 146.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.67ms. Allocated memory is still 290.5MB. Free memory was 232.4MB in the beginning and 221.1MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 31.50ms. Allocated memory is still 290.5MB. Free memory was 221.1MB in the beginning and 219.5MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.15ms. Allocated memory is still 290.5MB. Free memory was 219.5MB in the beginning and 218.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 594.95ms. Allocated memory is still 290.5MB. Free memory was 218.1MB in the beginning and 190.8MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 547620.97ms. Allocated memory was 290.5MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 190.1MB in the beginning and 852.0MB in the end (delta: -661.9MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.6s, 29 PlacesBefore, 20 PlacesAfterwards, 26 TransitionsBefore, 15 TransitionsAfterwards, 224 CoEnabledTransitionPairs, 3 FixpointIterations, 1 TrivialSequentialCompositions, 8 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 2 ChoiceCompositions, 13 TotalNumberOfCompositions, 241 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 241, independent: 241, independent conditional: 0, independent unconditional: 241, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 140, independent: 140, independent conditional: 0, independent unconditional: 140, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 140, independent: 135, independent conditional: 0, independent unconditional: 135, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 37, independent: 37, independent conditional: 0, independent unconditional: 37, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 241, independent: 101, independent conditional: 0, independent unconditional: 101, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 140, unknown conditional: 0, unknown unconditional: 140] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-7-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-6-1 context. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-7-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-6-1 context. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDA2 was simplifying a ∧-7-2-1 term,while SimplifyDDA2 was simplifying 2 xjuncts wrt. a ∧-6-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 42 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 547.5s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 520.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.7s, HoareTripleCheckerStatistics: 30 mSolverCounterUnknown, 2078 SdHoareTripleChecker+Valid, 148.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2078 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 146.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 111 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 454 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8032 IncrementalHoareTripleChecker+Invalid, 8627 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 454 mSolverCounterUnsat, 0 mSDtfsCounter, 8032 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 813 GetRequests, 331 SyntacticMatches, 17 SemanticMatches, 464 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5080 ImplicationChecksByTransitivity, 282.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76804occurred in iteration=16, InterpolantAutomatonStates: 334, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 21.0s InterpolantComputationTime, 535 NumberOfCodeBlocks, 535 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 732 ConstructedInterpolants, 0 QuantifiedInterpolants, 13557 SizeOfPredicates, 113 NumberOfNonLiveVariables, 1672 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 43 InterpolantComputations, 4 PerfectInterpolantSequences, 120/480 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