/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 07:43:47,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 07:43:47,692 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-VariableLbe.epf [2023-08-24 07:43:47,696 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 07:43:47,697 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 07:43:47,727 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 07:43:47,728 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 07:43:47,728 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 07:43:47,729 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 07:43:47,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 07:43:47,733 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 07:43:47,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 07:43:47,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 07:43:47,734 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 07:43:47,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 07:43:47,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 07:43:47,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 07:43:47,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 07:43:47,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 07:43:47,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 07:43:47,736 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 07:43:47,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 07:43:47,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 07:43:47,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 07:43:47,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 07:43:47,738 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 07:43:47,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 07:43:47,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:43:47,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 07:43:47,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 07:43:47,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 07:43:47,740 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 07:43:47,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 07:43:47,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 07:43:47,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 07:43:47,740 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 07:43:48,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 07:43:48,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 07:43:48,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 07:43:48,112 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 07:43:48,112 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 07:43:48,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-08-24 07:43:49,314 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 07:43:49,512 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 07:43:49,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-symm.wvr.c [2023-08-24 07:43:49,520 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c037d7dba/d248e77174074b73a69b090744b1fe1d/FLAG65b713d94 [2023-08-24 07:43:49,532 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c037d7dba/d248e77174074b73a69b090744b1fe1d [2023-08-24 07:43:49,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 07:43:49,536 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 07:43:49,536 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 07:43:49,537 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 07:43:49,539 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 07:43:49,539 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,540 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7186c37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49, skipping insertion in model container [2023-08-24 07:43:49,541 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,562 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 07:43:49,701 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/chl-nzb-file-symm.wvr.c[4929,4942] [2023-08-24 07:43:49,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:43:49,715 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 07:43:49,748 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/chl-nzb-file-symm.wvr.c[4929,4942] [2023-08-24 07:43:49,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:43:49,770 INFO L206 MainTranslator]: Completed translation [2023-08-24 07:43:49,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49 WrapperNode [2023-08-24 07:43:49,771 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 07:43:49,773 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 07:43:49,773 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 07:43:49,773 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 07:43:49,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,798 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,844 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 408 [2023-08-24 07:43:49,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 07:43:49,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 07:43:49,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 07:43:49,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 07:43:49,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,871 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,903 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,906 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,909 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 07:43:49,910 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 07:43:49,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 07:43:49,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 07:43:49,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (1/1) ... [2023-08-24 07:43:49,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:43:49,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:43:49,942 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) [2023-08-24 07:43:49,966 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 [2023-08-24 07:43:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 07:43:49,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 07:43:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 07:43:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 07:43:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 07:43:49,985 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 07:43:49,985 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 07:43:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 07:43:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 07:43:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 07:43:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 07:43:49,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 07:43:49,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 07:43:49,988 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 07:43:50,107 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 07:43:50,109 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 07:43:50,660 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 07:43:50,670 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 07:43:50,670 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-24 07:43:50,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:43:50 BoogieIcfgContainer [2023-08-24 07:43:50,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 07:43:50,673 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 07:43:50,673 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 07:43:50,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 07:43:50,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 07:43:49" (1/3) ... [2023-08-24 07:43:50,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b878ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:43:50, skipping insertion in model container [2023-08-24 07:43:50,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:43:49" (2/3) ... [2023-08-24 07:43:50,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b878ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:43:50, skipping insertion in model container [2023-08-24 07:43:50,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:43:50" (3/3) ... [2023-08-24 07:43:50,678 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2023-08-24 07:43:50,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 07:43:50,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 07:43:50,692 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 07:43:50,799 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 07:43:50,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 487 transitions, 990 flow [2023-08-24 07:43:51,047 INFO L124 PetriNetUnfolderBase]: 49/485 cut-off events. [2023-08-24 07:43:51,048 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 07:43:51,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 485 events. 49/485 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1351 event pairs, 0 based on Foata normal form. 0/435 useless extension candidates. Maximal degree in co-relation 323. Up to 2 conditions per place. [2023-08-24 07:43:51,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 445 places, 487 transitions, 990 flow [2023-08-24 07:43:51,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 477 transitions, 966 flow [2023-08-24 07:43:51,081 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 07:43:51,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 435 places, 477 transitions, 966 flow [2023-08-24 07:43:51,113 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 435 places, 477 transitions, 966 flow [2023-08-24 07:43:51,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 477 transitions, 966 flow [2023-08-24 07:43:51,232 INFO L124 PetriNetUnfolderBase]: 49/477 cut-off events. [2023-08-24 07:43:51,232 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 07:43:51,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 477 events. 49/477 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1337 event pairs, 0 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 323. Up to 2 conditions per place. [2023-08-24 07:43:51,260 INFO L119 LiptonReduction]: Number of co-enabled transitions 53352 [2023-08-24 07:44:08,185 INFO L134 LiptonReduction]: Checked pairs total: 49152 [2023-08-24 07:44:08,185 INFO L136 LiptonReduction]: Total number of compositions: 591 [2023-08-24 07:44:08,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 07:44:08,203 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=LoopsAndPotentialCycles, 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;@20565d23, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 07:44:08,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 07:44:08,209 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 07:44:08,209 INFO L124 PetriNetUnfolderBase]: 7/28 cut-off events. [2023-08-24 07:44:08,209 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 07:44:08,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:08,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:08,211 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:44:08,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:08,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1099752502, now seen corresponding path program 1 times [2023-08-24 07:44:08,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:08,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409809954] [2023-08-24 07:44:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:08,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:44:08,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:08,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409809954] [2023-08-24 07:44:08,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409809954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:08,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:08,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 07:44:08,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912808216] [2023-08-24 07:44:08,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:08,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 07:44:08,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:08,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 07:44:08,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 07:44:08,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1078 [2023-08-24 07:44:08,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:08,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:08,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1078 [2023-08-24 07:44:08,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:08,797 INFO L124 PetriNetUnfolderBase]: 157/250 cut-off events. [2023-08-24 07:44:08,798 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-24 07:44:08,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 530 conditions, 250 events. 157/250 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 638 event pairs, 87 based on Foata normal form. 0/180 useless extension candidates. Maximal degree in co-relation 472. Up to 249 conditions per place. [2023-08-24 07:44:08,800 INFO L140 encePairwiseOnDemand]: 1073/1078 looper letters, 27 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-08-24 07:44:08,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 31 transitions, 136 flow [2023-08-24 07:44:08,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:44:08,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:44:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2023-08-24 07:44:08,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137291280148423 [2023-08-24 07:44:08,825 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1338 transitions. [2023-08-24 07:44:08,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1338 transitions. [2023-08-24 07:44:08,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:08,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1338 transitions. [2023-08-24 07:44:08,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:08,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:08,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:08,853 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 70 flow. Second operand 3 states and 1338 transitions. [2023-08-24 07:44:08,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 31 transitions, 136 flow [2023-08-24 07:44:08,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 31 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 07:44:08,859 INFO L231 Difference]: Finished difference. Result has 28 places, 31 transitions, 84 flow [2023-08-24 07:44:08,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=28, PETRI_TRANSITIONS=31} [2023-08-24 07:44:08,863 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-08-24 07:44:08,863 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 31 transitions, 84 flow [2023-08-24 07:44:08,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 439.3333333333333) internal successors, (1318), 3 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:08,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:08,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:08,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 07:44:08,865 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:44:08,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:08,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2106734751, now seen corresponding path program 1 times [2023-08-24 07:44:08,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:08,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458824385] [2023-08-24 07:44:08,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:08,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:44:09,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:09,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458824385] [2023-08-24 07:44:09,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458824385] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:44:09,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614318801] [2023-08-24 07:44:09,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:09,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:09,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:44:09,101 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) [2023-08-24 07:44:09,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 07:44:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:09,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-24 07:44:09,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:44:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:44:09,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:44:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:44:09,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614318801] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:44:09,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:44:09,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-24 07:44:09,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769694999] [2023-08-24 07:44:09,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:44:09,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 07:44:09,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:09,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 07:44:09,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-24 07:44:09,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1078 [2023-08-24 07:44:09,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 31 transitions, 84 flow. Second operand has 8 states, 8 states have (on average 437.625) internal successors, (3501), 8 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:09,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:09,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1078 [2023-08-24 07:44:09,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:09,485 INFO L124 PetriNetUnfolderBase]: 157/256 cut-off events. [2023-08-24 07:44:09,485 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 07:44:09,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 256 events. 157/256 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 638 event pairs, 87 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 512. Up to 249 conditions per place. [2023-08-24 07:44:09,487 INFO L140 encePairwiseOnDemand]: 1073/1078 looper letters, 27 selfloop transitions, 10 changer transitions 0/37 dead transitions. [2023-08-24 07:44:09,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 182 flow [2023-08-24 07:44:09,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:44:09,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:44:09,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2653 transitions. [2023-08-24 07:44:09,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4101731601731602 [2023-08-24 07:44:09,494 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2653 transitions. [2023-08-24 07:44:09,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2653 transitions. [2023-08-24 07:44:09,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:09,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2653 transitions. [2023-08-24 07:44:09,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 442.1666666666667) internal successors, (2653), 6 states have internal predecessors, (2653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:09,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1078.0) internal successors, (7546), 7 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:09,514 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1078.0) internal successors, (7546), 7 states have internal predecessors, (7546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:09,514 INFO L175 Difference]: Start difference. First operand has 28 places, 31 transitions, 84 flow. Second operand 6 states and 2653 transitions. [2023-08-24 07:44:09,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 182 flow [2023-08-24 07:44:09,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 07:44:09,516 INFO L231 Difference]: Finished difference. Result has 35 places, 37 transitions, 146 flow [2023-08-24 07:44:09,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=35, PETRI_TRANSITIONS=37} [2023-08-24 07:44:09,517 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2023-08-24 07:44:09,517 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 37 transitions, 146 flow [2023-08-24 07:44:09,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 437.625) internal successors, (3501), 8 states have internal predecessors, (3501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:09,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:09,520 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:09,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 07:44:09,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:09,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:44:09,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1424928244, now seen corresponding path program 2 times [2023-08-24 07:44:09,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:09,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948960178] [2023-08-24 07:44:09,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:09,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 07:44:09,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:09,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948960178] [2023-08-24 07:44:09,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948960178] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:44:09,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944908395] [2023-08-24 07:44:09,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 07:44:09,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:09,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:44:09,939 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) [2023-08-24 07:44:09,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 07:44:10,069 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 07:44:10,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:44:10,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 07:44:10,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:44:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 07:44:10,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 07:44:10,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944908395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:10,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 07:44:10,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-24 07:44:10,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487508411] [2023-08-24 07:44:10,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:10,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 07:44:10,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:10,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 07:44:10,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-24 07:44:10,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1078 [2023-08-24 07:44:10,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 37 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 421.75) internal successors, (1687), 4 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:10,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:10,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1078 [2023-08-24 07:44:10,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:10,837 INFO L124 PetriNetUnfolderBase]: 165/285 cut-off events. [2023-08-24 07:44:10,837 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 07:44:10,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 285 events. 165/285 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 841 event pairs, 87 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 562. Up to 249 conditions per place. [2023-08-24 07:44:10,840 INFO L140 encePairwiseOnDemand]: 1074/1078 looper letters, 43 selfloop transitions, 1 changer transitions 7/51 dead transitions. [2023-08-24 07:44:10,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 281 flow [2023-08-24 07:44:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 07:44:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 07:44:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1717 transitions. [2023-08-24 07:44:10,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39819109461966606 [2023-08-24 07:44:10,845 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1717 transitions. [2023-08-24 07:44:10,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1717 transitions. [2023-08-24 07:44:10,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:10,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1717 transitions. [2023-08-24 07:44:10,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 429.25) internal successors, (1717), 4 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:10,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1078.0) internal successors, (5390), 5 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:10,858 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1078.0) internal successors, (5390), 5 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:10,858 INFO L175 Difference]: Start difference. First operand has 35 places, 37 transitions, 146 flow. Second operand 4 states and 1717 transitions. [2023-08-24 07:44:10,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 281 flow [2023-08-24 07:44:10,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 265 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 07:44:10,862 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 139 flow [2023-08-24 07:44:10,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-08-24 07:44:10,863 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-08-24 07:44:10,863 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 139 flow [2023-08-24 07:44:10,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 421.75) internal successors, (1687), 4 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:10,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:10,865 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:10,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 07:44:11,070 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,SelfDestructingSolverStorable2 [2023-08-24 07:44:11,071 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:44:11,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1803241482, now seen corresponding path program 3 times [2023-08-24 07:44:11,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:11,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953789169] [2023-08-24 07:44:11,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:11,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 07:44:11,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:11,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953789169] [2023-08-24 07:44:11,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953789169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:44:11,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31063586] [2023-08-24 07:44:11,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 07:44:11,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:11,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:44:11,253 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) [2023-08-24 07:44:11,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 07:44:11,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 07:44:11,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:44:11,379 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 07:44:11,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:44:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 07:44:11,721 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 07:44:11,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31063586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:11,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 07:44:11,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-24 07:44:11,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148060211] [2023-08-24 07:44:11,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:11,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 07:44:11,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:11,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 07:44:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-24 07:44:11,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 1078 [2023-08-24 07:44:11,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 421.75) internal successors, (1687), 4 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:11,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:11,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 1078 [2023-08-24 07:44:11,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:11,986 INFO L124 PetriNetUnfolderBase]: 173/317 cut-off events. [2023-08-24 07:44:11,987 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-24 07:44:11,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 317 events. 173/317 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1066 event pairs, 96 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 720. Up to 256 conditions per place. [2023-08-24 07:44:11,988 INFO L140 encePairwiseOnDemand]: 1074/1078 looper letters, 51 selfloop transitions, 1 changer transitions 5/57 dead transitions. [2023-08-24 07:44:11,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 57 transitions, 302 flow [2023-08-24 07:44:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 07:44:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 07:44:11,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1723 transitions. [2023-08-24 07:44:11,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399582560296846 [2023-08-24 07:44:11,993 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1723 transitions. [2023-08-24 07:44:11,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1723 transitions. [2023-08-24 07:44:11,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:11,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1723 transitions. [2023-08-24 07:44:11,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1078.0) internal successors, (5390), 5 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,007 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1078.0) internal successors, (5390), 5 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,007 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 139 flow. Second operand 4 states and 1723 transitions. [2023-08-24 07:44:12,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 57 transitions, 302 flow [2023-08-24 07:44:12,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 57 transitions, 296 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-24 07:44:12,009 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 145 flow [2023-08-24 07:44:12,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=145, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-24 07:44:12,010 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-08-24 07:44:12,010 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 145 flow [2023-08-24 07:44:12,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 421.75) internal successors, (1687), 4 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:12,012 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:12,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 07:44:12,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:12,224 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:44:12,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:12,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1648122426, now seen corresponding path program 1 times [2023-08-24 07:44:12,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:12,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423545721] [2023-08-24 07:44:12,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:12,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:12,412 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 07:44:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:12,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423545721] [2023-08-24 07:44:12,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423545721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:44:12,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143250100] [2023-08-24 07:44:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:12,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:44:12,453 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) [2023-08-24 07:44:12,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 07:44:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:12,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 07:44:12,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:44:12,652 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 07:44:12,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:44:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 07:44:12,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143250100] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:44:12,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:44:12,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-24 07:44:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090952748] [2023-08-24 07:44:12,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:44:12,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 07:44:12,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 07:44:12,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-24 07:44:12,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1078 [2023-08-24 07:44:12,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 145 flow. Second operand has 17 states, 17 states have (on average 436.8235294117647) internal successors, (7426), 17 states have internal predecessors, (7426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:12,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1078 [2023-08-24 07:44:12,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:12,931 INFO L124 PetriNetUnfolderBase]: 172/313 cut-off events. [2023-08-24 07:44:12,931 INFO L125 PetriNetUnfolderBase]: For 180/180 co-relation queries the response was YES. [2023-08-24 07:44:12,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 313 events. 172/313 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 999 event pairs, 124 based on Foata normal form. 1/267 useless extension candidates. Maximal degree in co-relation 752. Up to 304 conditions per place. [2023-08-24 07:44:12,933 INFO L140 encePairwiseOnDemand]: 1073/1078 looper letters, 27 selfloop transitions, 12 changer transitions 0/39 dead transitions. [2023-08-24 07:44:12,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 235 flow [2023-08-24 07:44:12,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:44:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:44:12,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3086 transitions. [2023-08-24 07:44:12,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40895838855022526 [2023-08-24 07:44:12,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3086 transitions. [2023-08-24 07:44:12,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3086 transitions. [2023-08-24 07:44:12,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:12,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3086 transitions. [2023-08-24 07:44:12,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 440.85714285714283) internal successors, (3086), 7 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1078.0) internal successors, (8624), 8 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,957 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1078.0) internal successors, (8624), 8 states have internal predecessors, (8624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,957 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 145 flow. Second operand 7 states and 3086 transitions. [2023-08-24 07:44:12,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 235 flow [2023-08-24 07:44:12,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 232 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 07:44:12,960 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 188 flow [2023-08-24 07:44:12,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=188, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-24 07:44:12,960 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-08-24 07:44:12,960 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 188 flow [2023-08-24 07:44:12,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 436.8235294117647) internal successors, (7426), 17 states have internal predecessors, (7426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:12,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:12,963 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:12,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 07:44:13,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:13,169 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:44:13,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:13,170 INFO L85 PathProgramCache]: Analyzing trace with hash -990363399, now seen corresponding path program 1 times [2023-08-24 07:44:13,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:13,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808430937] [2023-08-24 07:44:13,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:13,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:13,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:44:13,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:13,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808430937] [2023-08-24 07:44:13,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808430937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:13,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:13,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:44:13,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157895256] [2023-08-24 07:44:13,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:13,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 07:44:13,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:13,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 07:44:13,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 07:44:13,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1078 [2023-08-24 07:44:13,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:13,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:13,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1078 [2023-08-24 07:44:13,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:13,477 INFO L124 PetriNetUnfolderBase]: 211/378 cut-off events. [2023-08-24 07:44:13,477 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-08-24 07:44:13,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 378 events. 211/378 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1309 event pairs, 124 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 846. Up to 318 conditions per place. [2023-08-24 07:44:13,480 INFO L140 encePairwiseOnDemand]: 1075/1078 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-24 07:44:13,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 337 flow [2023-08-24 07:44:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:44:13,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:44:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1330 transitions. [2023-08-24 07:44:13,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2023-08-24 07:44:13,484 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1330 transitions. [2023-08-24 07:44:13,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1330 transitions. [2023-08-24 07:44:13,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:13,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1330 transitions. [2023-08-24 07:44:13,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 443.3333333333333) internal successors, (1330), 3 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:13,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:13,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:13,492 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 188 flow. Second operand 3 states and 1330 transitions. [2023-08-24 07:44:13,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 337 flow [2023-08-24 07:44:13,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 313 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-24 07:44:13,494 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 176 flow [2023-08-24 07:44:13,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-24 07:44:13,495 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2023-08-24 07:44:13,497 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 176 flow [2023-08-24 07:44:13,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:13,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:13,499 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:13,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 07:44:13,500 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:44:13,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:13,500 INFO L85 PathProgramCache]: Analyzing trace with hash 789351445, now seen corresponding path program 2 times [2023-08-24 07:44:13,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:13,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635845060] [2023-08-24 07:44:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:13,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:44:13,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:13,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635845060] [2023-08-24 07:44:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635845060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:13,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:13,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:44:13,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630912938] [2023-08-24 07:44:13,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:13,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 07:44:13,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:13,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 07:44:13,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 07:44:13,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1078 [2023-08-24 07:44:13,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:13,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:13,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1078 [2023-08-24 07:44:13,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:13,793 INFO L124 PetriNetUnfolderBase]: 291/506 cut-off events. [2023-08-24 07:44:13,793 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-08-24 07:44:13,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 506 events. 291/506 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1671 event pairs, 165 based on Foata normal form. 0/436 useless extension candidates. Maximal degree in co-relation 1296. Up to 381 conditions per place. [2023-08-24 07:44:13,796 INFO L140 encePairwiseOnDemand]: 1075/1078 looper letters, 51 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-24 07:44:13,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 325 flow [2023-08-24 07:44:13,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:44:13,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:44:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1326 transitions. [2023-08-24 07:44:13,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4100185528756957 [2023-08-24 07:44:13,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1326 transitions. [2023-08-24 07:44:13,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1326 transitions. [2023-08-24 07:44:13,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:13,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1326 transitions. [2023-08-24 07:44:13,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:13,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:13,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:13,832 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 176 flow. Second operand 3 states and 1326 transitions. [2023-08-24 07:44:13,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 325 flow [2023-08-24 07:44:13,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 317 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 07:44:13,834 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 184 flow [2023-08-24 07:44:13,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-24 07:44:13,835 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-08-24 07:44:13,835 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 184 flow [2023-08-24 07:44:13,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:13,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:13,835 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:13,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 07:44:13,836 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:44:13,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash -387777528, now seen corresponding path program 1 times [2023-08-24 07:44:13,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:13,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921978493] [2023-08-24 07:44:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:13,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-08-24 07:44:14,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:14,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921978493] [2023-08-24 07:44:14,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921978493] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:14,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:14,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:44:14,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606480653] [2023-08-24 07:44:14,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:14,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 07:44:14,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:14,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 07:44:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 07:44:14,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 441 out of 1078 [2023-08-24 07:44:14,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 446.6666666666667) internal successors, (1340), 3 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:14,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:14,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 441 of 1078 [2023-08-24 07:44:14,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:14,163 INFO L124 PetriNetUnfolderBase]: 231/402 cut-off events. [2023-08-24 07:44:14,163 INFO L125 PetriNetUnfolderBase]: For 288/288 co-relation queries the response was YES. [2023-08-24 07:44:14,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 402 events. 231/402 cut-off events. For 288/288 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1196 event pairs, 82 based on Foata normal form. 34/386 useless extension candidates. Maximal degree in co-relation 994. Up to 371 conditions per place. [2023-08-24 07:44:14,166 INFO L140 encePairwiseOnDemand]: 1074/1078 looper letters, 42 selfloop transitions, 2 changer transitions 4/48 dead transitions. [2023-08-24 07:44:14,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 48 transitions, 305 flow [2023-08-24 07:44:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:44:14,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:44:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1361 transitions. [2023-08-24 07:44:14,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42084106369820656 [2023-08-24 07:44:14,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1361 transitions. [2023-08-24 07:44:14,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1361 transitions. [2023-08-24 07:44:14,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:14,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1361 transitions. [2023-08-24 07:44:14,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 453.6666666666667) internal successors, (1361), 3 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:14,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:14,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1078.0) internal successors, (4312), 4 states have internal predecessors, (4312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:14,177 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 184 flow. Second operand 3 states and 1361 transitions. [2023-08-24 07:44:14,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 48 transitions, 305 flow [2023-08-24 07:44:14,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 48 transitions, 302 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 07:44:14,179 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 192 flow [2023-08-24 07:44:14,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2023-08-24 07:44:14,180 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-08-24 07:44:14,180 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 192 flow [2023-08-24 07:44:14,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 446.6666666666667) internal successors, (1340), 3 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:14,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:14,180 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:14,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 07:44:14,181 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:44:14,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:14,181 INFO L85 PathProgramCache]: Analyzing trace with hash -696538099, now seen corresponding path program 1 times [2023-08-24 07:44:14,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:14,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985048851] [2023-08-24 07:44:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:14,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:14,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-08-24 07:44:18,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985048851] [2023-08-24 07:44:18,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985048851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:44:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602558323] [2023-08-24 07:44:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:18,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:18,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:44:18,051 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) [2023-08-24 07:44:18,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 07:44:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:18,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-24 07:44:18,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:44:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:44:19,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:44:52,152 WARN L234 SmtUtils]: Spent 28.01s on a formula simplification. DAG size of input: 108 DAG size of output: 84 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:45:08,670 WARN L234 SmtUtils]: Spent 16.35s on a formula simplification. DAG size of input: 60 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:45:27,204 WARN L234 SmtUtils]: Spent 18.36s on a formula simplification. DAG size of input: 59 DAG size of output: 57 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:45:27,983 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:45:27,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 146 treesize of output 728 [2023-08-24 07:45:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:45:34,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602558323] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:45:34,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:45:34,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 13] total 40 [2023-08-24 07:45:34,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933553430] [2023-08-24 07:45:34,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:45:34,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-08-24 07:45:34,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:45:34,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-08-24 07:45:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1380, Unknown=0, NotChecked=0, Total=1640 [2023-08-24 07:45:34,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 1078 [2023-08-24 07:45:34,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 192 flow. Second operand has 41 states, 41 states have (on average 336.6829268292683) internal successors, (13804), 41 states have internal predecessors, (13804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:34,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:45:34,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 1078 [2023-08-24 07:45:34,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:45:51,845 WARN L234 SmtUtils]: Spent 16.34s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:46:00,345 WARN L234 SmtUtils]: Spent 8.22s on a formula simplification. DAG size of input: 94 DAG size of output: 65 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:46:08,614 WARN L234 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:46:17,264 WARN L234 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 103 DAG size of output: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:46:36,610 WARN L234 SmtUtils]: Spent 19.02s on a formula simplification. DAG size of input: 98 DAG size of output: 59 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:46:52,807 WARN L234 SmtUtils]: Spent 12.60s on a formula simplification. DAG size of input: 101 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:47:03,485 WARN L234 SmtUtils]: Spent 10.57s on a formula simplification that was a NOOP. DAG size: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:47:18,104 WARN L234 SmtUtils]: Spent 14.01s on a formula simplification. DAG size of input: 184 DAG size of output: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:48:13,355 WARN L234 SmtUtils]: Spent 46.95s on a formula simplification. DAG size of input: 184 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:49:35,580 WARN L234 SmtUtils]: Spent 1.33m on a formula simplification. DAG size of input: 187 DAG size of output: 101 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:49:59,313 WARN L234 SmtUtils]: Spent 21.22s on a formula simplification that was a NOOP. DAG size: 115 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:50:17,371 WARN L234 SmtUtils]: Spent 17.64s on a formula simplification. DAG size of input: 121 DAG size of output: 118 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:51:11,842 WARN L234 SmtUtils]: Spent 52.81s on a formula simplification. DAG size of input: 173 DAG size of output: 170 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:51:20,521 WARN L234 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 116 DAG size of output: 39 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:51:27,463 WARN L234 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 155 DAG size of output: 41 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:51:44,499 WARN L234 SmtUtils]: Spent 13.25s on a formula simplification that was a NOOP. DAG size: 138 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:51:58,852 WARN L234 SmtUtils]: Spent 13.38s on a formula simplification that was a NOOP. DAG size: 127 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:52:26,349 WARN L234 SmtUtils]: Spent 26.63s on a formula simplification. DAG size of input: 155 DAG size of output: 139 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:52:27,634 INFO L124 PetriNetUnfolderBase]: 629/1104 cut-off events. [2023-08-24 07:52:27,635 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2023-08-24 07:52:27,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2729 conditions, 1104 events. 629/1104 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5038 event pairs, 55 based on Foata normal form. 5/978 useless extension candidates. Maximal degree in co-relation 2662. Up to 336 conditions per place. [2023-08-24 07:52:27,641 INFO L140 encePairwiseOnDemand]: 1058/1078 looper letters, 147 selfloop transitions, 130 changer transitions 23/300 dead transitions. [2023-08-24 07:52:27,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 300 transitions, 1473 flow [2023-08-24 07:52:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-08-24 07:52:27,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-08-24 07:52:27,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 18042 transitions. [2023-08-24 07:52:27,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3157839465117093 [2023-08-24 07:52:27,684 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 18042 transitions. [2023-08-24 07:52:27,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 18042 transitions. [2023-08-24 07:52:27,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:52:27,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 18042 transitions. [2023-08-24 07:52:27,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 340.41509433962267) internal successors, (18042), 53 states have internal predecessors, (18042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:52:27,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 1078.0) internal successors, (58212), 54 states have internal predecessors, (58212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:52:27,815 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 1078.0) internal successors, (58212), 54 states have internal predecessors, (58212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:52:27,816 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 192 flow. Second operand 53 states and 18042 transitions. [2023-08-24 07:52:27,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 300 transitions, 1473 flow [2023-08-24 07:52:27,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 300 transitions, 1449 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-24 07:52:27,827 INFO L231 Difference]: Finished difference. Result has 105 places, 184 transitions, 978 flow [2023-08-24 07:52:27,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=978, PETRI_PLACES=105, PETRI_TRANSITIONS=184} [2023-08-24 07:52:27,830 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 76 predicate places. [2023-08-24 07:52:27,830 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 184 transitions, 978 flow [2023-08-24 07:52:27,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 336.6829268292683) internal successors, (13804), 41 states have internal predecessors, (13804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:52:27,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:52:27,833 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:52:27,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 07:52:28,038 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 [2023-08-24 07:52:28,039 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:52:28,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:52:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1866960811, now seen corresponding path program 2 times [2023-08-24 07:52:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:52:28,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228851177] [2023-08-24 07:52:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:52:28,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:52:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:52:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:52:32,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:52:32,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228851177] [2023-08-24 07:52:32,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228851177] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:52:32,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577052283] [2023-08-24 07:52:32,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 07:52:32,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:52:32,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:52:32,595 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) [2023-08-24 07:52:32,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 07:52:32,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 07:52:32,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:52:32,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-24 07:52:32,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:52:35,674 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 07:52:35,687 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:52:35,687 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 71 [2023-08-24 07:52:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:52:36,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:52:44,124 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:52:44,124 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 524 treesize of output 508 [2023-08-24 07:52:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:52:46,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577052283] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:52:46,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:52:46,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 13] total 38 [2023-08-24 07:52:46,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443499943] [2023-08-24 07:52:46,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:52:46,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-24 07:52:46,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:52:46,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-24 07:52:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2023-08-24 07:52:46,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 1078 [2023-08-24 07:52:46,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 184 transitions, 978 flow. Second operand has 39 states, 39 states have (on average 348.6666666666667) internal successors, (13598), 39 states have internal predecessors, (13598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:52:46,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:52:46,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 1078 [2023-08-24 07:52:46,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:53:50,775 INFO L124 PetriNetUnfolderBase]: 1656/2897 cut-off events. [2023-08-24 07:53:50,775 INFO L125 PetriNetUnfolderBase]: For 2246/2246 co-relation queries the response was YES. [2023-08-24 07:53:50,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9701 conditions, 2897 events. 1656/2897 cut-off events. For 2246/2246 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 15236 event pairs, 127 based on Foata normal form. 21/2673 useless extension candidates. Maximal degree in co-relation 9649. Up to 867 conditions per place. [2023-08-24 07:53:50,796 INFO L140 encePairwiseOnDemand]: 1062/1078 looper letters, 329 selfloop transitions, 405 changer transitions 17/751 dead transitions. [2023-08-24 07:53:50,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 751 transitions, 5154 flow [2023-08-24 07:53:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-08-24 07:53:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2023-08-24 07:53:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 29593 transitions. [2023-08-24 07:53:50,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3268066967046559 [2023-08-24 07:53:50,833 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 29593 transitions. [2023-08-24 07:53:50,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 29593 transitions. [2023-08-24 07:53:50,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:53:50,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 29593 transitions. [2023-08-24 07:53:50,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 352.29761904761904) internal successors, (29593), 84 states have internal predecessors, (29593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:53:50,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 1078.0) internal successors, (91630), 85 states have internal predecessors, (91630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:53:50,958 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 1078.0) internal successors, (91630), 85 states have internal predecessors, (91630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:53:50,958 INFO L175 Difference]: Start difference. First operand has 105 places, 184 transitions, 978 flow. Second operand 84 states and 29593 transitions. [2023-08-24 07:53:50,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 751 transitions, 5154 flow [2023-08-24 07:53:50,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 751 transitions, 4945 flow, removed 102 selfloop flow, removed 5 redundant places. [2023-08-24 07:53:50,997 INFO L231 Difference]: Finished difference. Result has 220 places, 527 transitions, 4017 flow [2023-08-24 07:53:50,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=4017, PETRI_PLACES=220, PETRI_TRANSITIONS=527} [2023-08-24 07:53:50,999 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2023-08-24 07:53:51,000 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 527 transitions, 4017 flow [2023-08-24 07:53:51,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 348.6666666666667) internal successors, (13598), 39 states have internal predecessors, (13598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:53:51,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:53:51,002 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:53:51,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 07:53:51,212 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 [2023-08-24 07:53:51,212 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:53:51,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:53:51,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1301222393, now seen corresponding path program 3 times [2023-08-24 07:53:51,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:53:51,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753830066] [2023-08-24 07:53:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:53:51,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:53:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:53:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:53:55,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:53:55,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753830066] [2023-08-24 07:53:55,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753830066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:53:55,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268436663] [2023-08-24 07:53:55,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 07:53:55,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:53:55,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:53:55,407 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) [2023-08-24 07:53:55,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 07:53:55,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 07:53:55,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:53:55,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-24 07:53:55,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:53:57,248 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 07:53:57,275 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:53:57,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 293 treesize of output 257 [2023-08-24 07:53:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:53:57,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:54:07,632 INFO L322 Elim1Store]: treesize reduction 65, result has 70.6 percent of original size [2023-08-24 07:54:07,633 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 104 treesize of output 219 [2023-08-24 07:54:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:54:07,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268436663] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:54:07,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:54:07,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 13] total 38 [2023-08-24 07:54:07,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035503468] [2023-08-24 07:54:07,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:54:07,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-24 07:54:07,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:54:07,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-24 07:54:07,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1208, Unknown=0, NotChecked=0, Total=1482 [2023-08-24 07:54:07,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 1078 [2023-08-24 07:54:07,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 527 transitions, 4017 flow. Second operand has 39 states, 39 states have (on average 348.71794871794873) internal successors, (13600), 39 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:54:07,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:54:07,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 1078 [2023-08-24 07:54:07,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:54:48,172 INFO L124 PetriNetUnfolderBase]: 2441/4308 cut-off events. [2023-08-24 07:54:48,173 INFO L125 PetriNetUnfolderBase]: For 33946/33946 co-relation queries the response was YES. [2023-08-24 07:54:48,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21613 conditions, 4308 events. 2441/4308 cut-off events. For 33946/33946 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25030 event pairs, 224 based on Foata normal form. 29/4321 useless extension candidates. Maximal degree in co-relation 21495. Up to 1379 conditions per place. [2023-08-24 07:54:48,217 INFO L140 encePairwiseOnDemand]: 1062/1078 looper letters, 508 selfloop transitions, 499 changer transitions 24/1031 dead transitions. [2023-08-24 07:54:48,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 1031 transitions, 10082 flow [2023-08-24 07:54:48,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-24 07:54:48,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-24 07:54:48,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 18383 transitions. [2023-08-24 07:54:48,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32793991722563154 [2023-08-24 07:54:48,284 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 18383 transitions. [2023-08-24 07:54:48,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 18383 transitions. [2023-08-24 07:54:48,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:54:48,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 18383 transitions. [2023-08-24 07:54:48,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 353.5192307692308) internal successors, (18383), 52 states have internal predecessors, (18383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:54:48,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 1078.0) internal successors, (57134), 53 states have internal predecessors, (57134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:54:48,359 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 1078.0) internal successors, (57134), 53 states have internal predecessors, (57134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:54:48,359 INFO L175 Difference]: Start difference. First operand has 220 places, 527 transitions, 4017 flow. Second operand 52 states and 18383 transitions. [2023-08-24 07:54:48,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 1031 transitions, 10082 flow [2023-08-24 07:54:48,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1031 transitions, 9704 flow, removed 173 selfloop flow, removed 4 redundant places. [2023-08-24 07:54:48,558 INFO L231 Difference]: Finished difference. Result has 290 places, 775 transitions, 7503 flow [2023-08-24 07:54:48,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=7503, PETRI_PLACES=290, PETRI_TRANSITIONS=775} [2023-08-24 07:54:48,559 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 261 predicate places. [2023-08-24 07:54:48,559 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 775 transitions, 7503 flow [2023-08-24 07:54:48,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 348.71794871794873) internal successors, (13600), 39 states have internal predecessors, (13600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:54:48,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:54:48,561 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:54:48,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 07:54:48,762 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 [2023-08-24 07:54:48,763 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:54:48,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:54:48,763 INFO L85 PathProgramCache]: Analyzing trace with hash 296076227, now seen corresponding path program 4 times [2023-08-24 07:54:48,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:54:48,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896617331] [2023-08-24 07:54:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:54:48,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:54:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:54:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:54:52,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:54:52,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896617331] [2023-08-24 07:54:52,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896617331] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:54:52,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264261408] [2023-08-24 07:54:52,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 07:54:52,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:54:52,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:54:52,256 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) [2023-08-24 07:54:52,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 07:54:52,445 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 07:54:52,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:54:52,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 40 conjunts are in the unsatisfiable core [2023-08-24 07:54:52,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:54:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:54:54,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:55:15,507 WARN L234 SmtUtils]: Spent 12.68s on a formula simplification. DAG size of input: 84 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:55:21,031 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:55:21,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 106 treesize of output 391 [2023-08-24 07:55:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:55:21,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264261408] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:55:21,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:55:21,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 39 [2023-08-24 07:55:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926118794] [2023-08-24 07:55:21,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:55:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-24 07:55:21,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:55:21,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-24 07:55:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1343, Unknown=0, NotChecked=0, Total=1560 [2023-08-24 07:55:21,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 1078 [2023-08-24 07:55:21,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 775 transitions, 7503 flow. Second operand has 40 states, 40 states have (on average 348.825) internal successors, (13953), 40 states have internal predecessors, (13953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:55:21,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:55:21,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 1078 [2023-08-24 07:55:21,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:55:59,884 INFO L124 PetriNetUnfolderBase]: 2679/4770 cut-off events. [2023-08-24 07:55:59,884 INFO L125 PetriNetUnfolderBase]: For 76145/76145 co-relation queries the response was YES. [2023-08-24 07:55:59,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28751 conditions, 4770 events. 2679/4770 cut-off events. For 76145/76145 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 29091 event pairs, 409 based on Foata normal form. 7/4769 useless extension candidates. Maximal degree in co-relation 28609. Up to 2223 conditions per place. [2023-08-24 07:55:59,932 INFO L140 encePairwiseOnDemand]: 1062/1078 looper letters, 492 selfloop transitions, 550 changer transitions 20/1062 dead transitions. [2023-08-24 07:55:59,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 1062 transitions, 12106 flow [2023-08-24 07:55:59,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-24 07:55:59,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-24 07:55:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 18005 transitions. [2023-08-24 07:55:59,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3274946342173233 [2023-08-24 07:55:59,950 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 18005 transitions. [2023-08-24 07:55:59,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 18005 transitions. [2023-08-24 07:55:59,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:55:59,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 18005 transitions. [2023-08-24 07:55:59,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 353.03921568627453) internal successors, (18005), 51 states have internal predecessors, (18005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:56:00,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 1078.0) internal successors, (56056), 52 states have internal predecessors, (56056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:56:00,027 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 1078.0) internal successors, (56056), 52 states have internal predecessors, (56056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:56:00,027 INFO L175 Difference]: Start difference. First operand has 290 places, 775 transitions, 7503 flow. Second operand 51 states and 18005 transitions. [2023-08-24 07:56:00,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 1062 transitions, 12106 flow [2023-08-24 07:56:00,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 1062 transitions, 11549 flow, removed 247 selfloop flow, removed 7 redundant places. [2023-08-24 07:56:00,468 INFO L231 Difference]: Finished difference. Result has 344 places, 899 transitions, 10161 flow [2023-08-24 07:56:00,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=7080, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=775, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=435, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=10161, PETRI_PLACES=344, PETRI_TRANSITIONS=899} [2023-08-24 07:56:00,469 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 315 predicate places. [2023-08-24 07:56:00,469 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 899 transitions, 10161 flow [2023-08-24 07:56:00,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 348.825) internal successors, (13953), 40 states have internal predecessors, (13953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:56:00,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:56:00,471 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:56:00,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-24 07:56:00,671 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 [2023-08-24 07:56:00,672 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:56:00,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:56:00,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1636954475, now seen corresponding path program 5 times [2023-08-24 07:56:00,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:56:00,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900856522] [2023-08-24 07:56:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:56:00,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:56:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:56:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-08-24 07:56:04,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:56:04,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900856522] [2023-08-24 07:56:04,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900856522] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:56:04,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773768152] [2023-08-24 07:56:04,641 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 07:56:04,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:56:04,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:56:04,642 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) [2023-08-24 07:56:04,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 07:56:04,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-24 07:56:04,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:56:04,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-24 07:56:04,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:56:06,605 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 07:56:06,620 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:56:06,621 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 77 [2023-08-24 07:56:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:56:07,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:56:18,547 INFO L322 Elim1Store]: treesize reduction 65, result has 70.6 percent of original size [2023-08-24 07:56:18,547 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 104 treesize of output 219 [2023-08-24 07:56:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:56:18,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773768152] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:56:18,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:56:18,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14, 13] total 41 [2023-08-24 07:56:18,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011992169] [2023-08-24 07:56:18,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:56:18,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-08-24 07:56:18,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:56:18,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-08-24 07:56:18,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2023-08-24 07:56:18,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 1078 [2023-08-24 07:56:18,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 899 transitions, 10161 flow. Second operand has 42 states, 42 states have (on average 336.6666666666667) internal successors, (14140), 42 states have internal predecessors, (14140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:56:18,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:56:18,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 1078 [2023-08-24 07:56:18,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:57:26,365 INFO L124 PetriNetUnfolderBase]: 3040/5520 cut-off events. [2023-08-24 07:57:26,365 INFO L125 PetriNetUnfolderBase]: For 103968/103968 co-relation queries the response was YES. [2023-08-24 07:57:26,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35862 conditions, 5520 events. 3040/5520 cut-off events. For 103968/103968 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 35657 event pairs, 323 based on Foata normal form. 15/5527 useless extension candidates. Maximal degree in co-relation 35708. Up to 1888 conditions per place. [2023-08-24 07:57:26,422 INFO L140 encePairwiseOnDemand]: 1059/1078 looper letters, 543 selfloop transitions, 781 changer transitions 30/1354 dead transitions. [2023-08-24 07:57:26,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1354 transitions, 17760 flow [2023-08-24 07:57:26,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-08-24 07:57:26,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-08-24 07:57:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 23215 transitions. [2023-08-24 07:57:26,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31669485976208667 [2023-08-24 07:57:26,445 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 23215 transitions. [2023-08-24 07:57:26,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 23215 transitions. [2023-08-24 07:57:26,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:57:26,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 23215 transitions. [2023-08-24 07:57:26,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 341.3970588235294) internal successors, (23215), 68 states have internal predecessors, (23215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:57:26,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 1078.0) internal successors, (74382), 69 states have internal predecessors, (74382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:57:26,532 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 1078.0) internal successors, (74382), 69 states have internal predecessors, (74382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:57:26,532 INFO L175 Difference]: Start difference. First operand has 344 places, 899 transitions, 10161 flow. Second operand 68 states and 23215 transitions. [2023-08-24 07:57:26,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1354 transitions, 17760 flow [2023-08-24 07:57:27,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 1354 transitions, 16647 flow, removed 410 selfloop flow, removed 15 redundant places. [2023-08-24 07:57:27,442 INFO L231 Difference]: Finished difference. Result has 419 places, 1142 transitions, 15169 flow [2023-08-24 07:57:27,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1078, PETRI_DIFFERENCE_MINUEND_FLOW=9476, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=557, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=15169, PETRI_PLACES=419, PETRI_TRANSITIONS=1142} [2023-08-24 07:57:27,444 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 390 predicate places. [2023-08-24 07:57:27,444 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 1142 transitions, 15169 flow [2023-08-24 07:57:27,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 336.6666666666667) internal successors, (14140), 42 states have internal predecessors, (14140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:57:27,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:57:27,446 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:57:27,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 07:57:27,656 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 [2023-08-24 07:57:27,657 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 07:57:27,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:57:27,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1793144205, now seen corresponding path program 6 times [2023-08-24 07:57:27,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:57:27,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729752826] [2023-08-24 07:57:27,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:57:27,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:57:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:57:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:57:31,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:57:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729752826] [2023-08-24 07:57:31,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729752826] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:57:31,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963410981] [2023-08-24 07:57:31,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 07:57:31,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:57:31,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:57:31,052 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) [2023-08-24 07:57:31,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 07:57:31,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-24 07:57:31,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:57:31,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-24 07:57:31,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:57:33,731 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:57:33,731 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-08-24 07:57:35,823 WARN L266 SmtUtils]: Removed 6 from assertion stack [2023-08-24 07:57:35,824 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 [2023-08-24 07:57:35,826 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 07:57:35,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 07:57:35,860 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 07:57:36,027 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 [2023-08-24 07:57:36,027 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 70ms.. [2023-08-24 07:57:36,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 07:57:36,029 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 07:57:36,029 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 2, 1, 1, 1] [2023-08-24 07:57:36,032 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 07:57:36,032 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 07:57:36,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 07:57:36 BasicIcfg [2023-08-24 07:57:36,034 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 07:57:36,035 INFO L158 Benchmark]: Toolchain (without parser) took 826499.50ms. Allocated memory was 350.2MB in the beginning and 906.0MB in the end (delta: 555.7MB). Free memory was 326.8MB in the beginning and 492.1MB in the end (delta: -165.3MB). Peak memory consumption was 392.8MB. Max. memory is 16.0GB. [2023-08-24 07:57:36,035 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 327.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 07:57:36,035 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.68ms. Allocated memory is still 350.2MB. Free memory was 326.3MB in the beginning and 312.9MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 07:57:36,036 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.95ms. Allocated memory is still 350.2MB. Free memory was 312.9MB in the beginning and 309.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 07:57:36,036 INFO L158 Benchmark]: Boogie Preprocessor took 64.15ms. Allocated memory is still 350.2MB. Free memory was 309.8MB in the beginning and 307.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 07:57:36,036 INFO L158 Benchmark]: RCFGBuilder took 762.04ms. Allocated memory is still 350.2MB. Free memory was 307.1MB in the beginning and 325.7MB in the end (delta: -18.5MB). Peak memory consumption was 40.2MB. Max. memory is 16.0GB. [2023-08-24 07:57:36,036 INFO L158 Benchmark]: TraceAbstraction took 825361.16ms. Allocated memory was 350.2MB in the beginning and 906.0MB in the end (delta: 555.7MB). Free memory was 324.7MB in the beginning and 492.1MB in the end (delta: -167.4MB). Peak memory consumption was 388.3MB. Max. memory is 16.0GB. [2023-08-24 07:57:36,037 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 327.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 234.68ms. Allocated memory is still 350.2MB. Free memory was 326.3MB in the beginning and 312.9MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 71.95ms. Allocated memory is still 350.2MB. Free memory was 312.9MB in the beginning and 309.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 64.15ms. Allocated memory is still 350.2MB. Free memory was 309.8MB in the beginning and 307.1MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 762.04ms. Allocated memory is still 350.2MB. Free memory was 307.1MB in the beginning and 325.7MB in the end (delta: -18.5MB). Peak memory consumption was 40.2MB. Max. memory is 16.0GB. * TraceAbstraction took 825361.16ms. Allocated memory was 350.2MB in the beginning and 906.0MB in the end (delta: 555.7MB). Free memory was 324.7MB in the beginning and 492.1MB in the end (delta: -167.4MB). Peak memory consumption was 388.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.1s, 435 PlacesBefore, 29 PlacesAfterwards, 477 TransitionsBefore, 29 TransitionsAfterwards, 53352 CoEnabledTransitionPairs, 8 FixpointIterations, 135 TrivialSequentialCompositions, 261 ConcurrentSequentialCompositions, 23 TrivialYvCompositions, 130 ConcurrentYvCompositions, 42 ChoiceCompositions, 591 TotalNumberOfCompositions, 49152 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 48078, independent: 47971, independent conditional: 0, independent unconditional: 47971, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 32801, independent: 32777, independent conditional: 0, independent unconditional: 32777, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 48078, independent: 15194, independent conditional: 0, independent unconditional: 15194, dependent: 83, dependent conditional: 0, dependent unconditional: 83, unknown: 32801, unknown conditional: 0, unknown unconditional: 32801] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 70ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 70ms.. - TimeoutResultAtElement [Line: 123]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 34 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 70ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 715 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: 825.2s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 627.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 17.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2160 SdHoareTripleChecker+Valid, 36.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2160 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 34.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 835 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12031 IncrementalHoareTripleChecker+Invalid, 12866 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 835 mSolverCounterUnsat, 0 mSDtfsCounter, 12031 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 959 GetRequests, 424 SyntacticMatches, 7 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15193 ImplicationChecksByTransitivity, 690.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15169occurred in iteration=13, InterpolantAutomatonStates: 341, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 166.7s InterpolantComputationTime, 574 NumberOfCodeBlocks, 556 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 747 ConstructedInterpolants, 17 QuantifiedInterpolants, 18054 SizeOfPredicates, 266 NumberOfNonLiveVariables, 2242 ConjunctsInSsa, 253 ConjunctsInUnsatCore, 29 InterpolantComputations, 6 PerfectInterpolantSequences, 620/717 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