/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:29:36,650 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:29:36,731 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:29:36,767 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:29:36,768 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:29:36,769 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:29:36,769 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:29:36,770 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:29:36,770 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:29:36,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:29:36,771 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:29:36,771 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:29:36,771 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:29:36,772 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:29:36,772 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:29:36,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:29:36,774 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:29:36,777 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:29:36,778 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:29:36,778 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:29:36,779 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:29:36,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:29:36,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:29:36,782 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:29:36,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:29:36,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:29:36,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:29:36,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:29:36,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:29:36,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:29:36,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:29:36,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:29:36,785 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:29:37,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:29:37,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:29:37,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:29:37,056 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:29:37,057 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:29:37,058 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:29:38,350 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:29:38,609 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:29:38,610 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:29:38,623 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74f8f00ff/aa2fc645bf6e408698285bd6b7f83786/FLAGe9300a85a [2023-11-17 11:29:38,639 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74f8f00ff/aa2fc645bf6e408698285bd6b7f83786 [2023-11-17 11:29:38,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:29:38,642 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:29:38,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:29:38,644 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:29:38,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:29:38,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:29:38" (1/1) ... [2023-11-17 11:29:38,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5deed877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:38, skipping insertion in model container [2023-11-17 11:29:38,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:29:38" (1/1) ... [2023-11-17 11:29:38,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:29:38,906 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 11:29:39,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:29:39,105 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:29:39,122 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-17 11:29:39,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:29:39,211 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:29:39,211 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:29:39,218 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:29:39,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39 WrapperNode [2023-11-17 11:29:39,221 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:29:39,222 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:29:39,222 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:29:39,222 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:29:39,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,258 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,285 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-17 11:29:39,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:29:39,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:29:39,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:29:39,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:29:39,295 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,325 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,330 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:29:39,331 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:29:39,331 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:29:39,331 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:29:39,332 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (1/1) ... [2023-11-17 11:29:39,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:29:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:29:39,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:29:39,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:29:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:29:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:29:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:29:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:29:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:29:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:29:39,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:29:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:29:39,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:29:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 11:29:39,410 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 11:29:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:29:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:29:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:29:39,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:29:39,412 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:29:39,566 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:29:39,568 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:29:39,796 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:29:39,901 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:29:39,901 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:29:39,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:29:39 BoogieIcfgContainer [2023-11-17 11:29:39,903 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:29:39,905 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:29:39,905 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:29:39,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:29:39,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:29:38" (1/3) ... [2023-11-17 11:29:39,910 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7254a207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:29:39, skipping insertion in model container [2023-11-17 11:29:39,910 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:39" (2/3) ... [2023-11-17 11:29:39,911 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7254a207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:29:39, skipping insertion in model container [2023-11-17 11:29:39,911 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:29:39" (3/3) ... [2023-11-17 11:29:39,912 INFO L112 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-17 11:29:39,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:29:39,930 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:29:39,930 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:29:39,978 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:29:40,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2023-11-17 11:29:40,053 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-11-17 11:29:40,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:40,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-17 11:29:40,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2023-11-17 11:29:40,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2023-11-17 11:29:40,067 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:29:40,077 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 33 transitions, 75 flow [2023-11-17 11:29:40,079 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 33 transitions, 75 flow [2023-11-17 11:29:40,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 33 transitions, 75 flow [2023-11-17 11:29:40,090 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-11-17 11:29:40,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:40,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 33 events. 0/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-17 11:29:40,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 624 [2023-11-17 11:29:40,534 INFO L134 LiptonReduction]: Checked pairs total: 961 [2023-11-17 11:29:40,534 INFO L136 LiptonReduction]: Total number of compositions: 16 [2023-11-17 11:29:40,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:29:40,565 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2fdc625d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:29:40,565 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:29:40,574 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:29:40,574 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 11:29:40,575 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:40,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:40,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:40,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:40,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:40,584 INFO L85 PathProgramCache]: Analyzing trace with hash 328661097, now seen corresponding path program 1 times [2023-11-17 11:29:40,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:40,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008707208] [2023-11-17 11:29:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:40,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:41,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:41,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008707208] [2023-11-17 11:29:41,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008707208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:41,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:41,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:29:41,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811791770] [2023-11-17 11:29:41,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:41,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:29:41,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:41,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:29:41,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:29:41,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-17 11:29:41,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:41,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-17 11:29:41,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:41,385 INFO L124 PetriNetUnfolderBase]: 551/886 cut-off events. [2023-11-17 11:29:41,386 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-17 11:29:41,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 886 events. 551/886 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3764 event pairs, 188 based on Foata normal form. 42/928 useless extension candidates. Maximal degree in co-relation 1816. Up to 543 conditions per place. [2023-11-17 11:29:41,399 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 23 selfloop transitions, 6 changer transitions 0/29 dead transitions. [2023-11-17 11:29:41,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 128 flow [2023-11-17 11:29:41,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:29:41,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:29:41,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-17 11:29:41,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-11-17 11:29:41,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-17 11:29:41,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-17 11:29:41,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:41,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-17 11:29:41,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,425 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,426 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 87 transitions. [2023-11-17 11:29:41,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 128 flow [2023-11-17 11:29:41,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 124 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:29:41,432 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-11-17 11:29:41,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-17 11:29:41,438 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 11:29:41,438 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-11-17 11:29:41,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:41,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:41,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:29:41,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:41,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:41,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1598559492, now seen corresponding path program 1 times [2023-11-17 11:29:41,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:41,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356804576] [2023-11-17 11:29:41,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:41,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:41,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:41,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356804576] [2023-11-17 11:29:41,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356804576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:41,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:41,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:41,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971601026] [2023-11-17 11:29:41,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:41,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:41,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:41,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:41,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:41,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-17 11:29:41,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:41,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-17 11:29:41,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:41,793 INFO L124 PetriNetUnfolderBase]: 505/816 cut-off events. [2023-11-17 11:29:41,794 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2023-11-17 11:29:41,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2214 conditions, 816 events. 505/816 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3338 event pairs, 121 based on Foata normal form. 12/828 useless extension candidates. Maximal degree in co-relation 2202. Up to 455 conditions per place. [2023-11-17 11:29:41,800 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 33 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2023-11-17 11:29:41,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 222 flow [2023-11-17 11:29:41,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2023-11-17 11:29:41,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2023-11-17 11:29:41,805 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 114 transitions. [2023-11-17 11:29:41,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 114 transitions. [2023-11-17 11:29:41,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:41,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 114 transitions. [2023-11-17 11:29:41,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,811 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 114 transitions. [2023-11-17 11:29:41,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 222 flow [2023-11-17 11:29:41,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 204 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:29:41,817 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2023-11-17 11:29:41,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-11-17 11:29:41,818 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-17 11:29:41,819 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2023-11-17 11:29:41,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:41,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:41,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:29:41,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:41,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1984267253, now seen corresponding path program 1 times [2023-11-17 11:29:41,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:41,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674120852] [2023-11-17 11:29:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:41,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:41,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:41,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674120852] [2023-11-17 11:29:41,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674120852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:41,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:41,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:41,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797201397] [2023-11-17 11:29:41,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:41,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:41,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:41,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:41,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:41,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-17 11:29:41,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:41,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:41,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-17 11:29:41,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:42,144 INFO L124 PetriNetUnfolderBase]: 483/782 cut-off events. [2023-11-17 11:29:42,145 INFO L125 PetriNetUnfolderBase]: For 668/668 co-relation queries the response was YES. [2023-11-17 11:29:42,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2356 conditions, 782 events. 483/782 cut-off events. For 668/668 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3121 event pairs, 123 based on Foata normal form. 8/790 useless extension candidates. Maximal degree in co-relation 2341. Up to 407 conditions per place. [2023-11-17 11:29:42,151 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 28 selfloop transitions, 10 changer transitions 0/38 dead transitions. [2023-11-17 11:29:42,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 244 flow [2023-11-17 11:29:42,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:42,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2023-11-17 11:29:42,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-17 11:29:42,155 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 110 transitions. [2023-11-17 11:29:42,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 110 transitions. [2023-11-17 11:29:42,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:42,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 110 transitions. [2023-11-17 11:29:42,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,159 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,159 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 4 states and 110 transitions. [2023-11-17 11:29:42,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 244 flow [2023-11-17 11:29:42,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 38 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:29:42,165 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 181 flow [2023-11-17 11:29:42,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-11-17 11:29:42,166 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 11:29:42,166 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 181 flow [2023-11-17 11:29:42,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:42,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:42,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:29:42,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:42,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:42,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1976425307, now seen corresponding path program 1 times [2023-11-17 11:29:42,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:42,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312004125] [2023-11-17 11:29:42,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:42,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:42,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:42,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:42,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312004125] [2023-11-17 11:29:42,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312004125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:42,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:42,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:42,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640747501] [2023-11-17 11:29:42,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:42,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:42,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-17 11:29:42,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:42,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-17 11:29:42,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:42,447 INFO L124 PetriNetUnfolderBase]: 447/728 cut-off events. [2023-11-17 11:29:42,447 INFO L125 PetriNetUnfolderBase]: For 1117/1117 co-relation queries the response was YES. [2023-11-17 11:29:42,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2511 conditions, 728 events. 447/728 cut-off events. For 1117/1117 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2960 event pairs, 97 based on Foata normal form. 12/740 useless extension candidates. Maximal degree in co-relation 2492. Up to 377 conditions per place. [2023-11-17 11:29:42,454 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 32 selfloop transitions, 13 changer transitions 0/45 dead transitions. [2023-11-17 11:29:42,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 345 flow [2023-11-17 11:29:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:42,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:42,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2023-11-17 11:29:42,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2023-11-17 11:29:42,456 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 114 transitions. [2023-11-17 11:29:42,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 114 transitions. [2023-11-17 11:29:42,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:42,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 114 transitions. [2023-11-17 11:29:42,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,459 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,459 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 181 flow. Second operand 4 states and 114 transitions. [2023-11-17 11:29:42,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 345 flow [2023-11-17 11:29:42,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:29:42,463 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 272 flow [2023-11-17 11:29:42,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2023-11-17 11:29:42,464 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-11-17 11:29:42,465 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 272 flow [2023-11-17 11:29:42,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:42,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:42,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:29:42,465 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:42,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1382742622, now seen corresponding path program 1 times [2023-11-17 11:29:42,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:42,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433247531] [2023-11-17 11:29:42,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:42,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:42,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:42,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:42,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433247531] [2023-11-17 11:29:42,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433247531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:42,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:42,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:42,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949916751] [2023-11-17 11:29:42,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:42,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:29:42,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:42,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:29:42,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:29:42,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2023-11-17 11:29:42,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:42,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2023-11-17 11:29:42,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:42,654 INFO L124 PetriNetUnfolderBase]: 309/542 cut-off events. [2023-11-17 11:29:42,655 INFO L125 PetriNetUnfolderBase]: For 2383/2383 co-relation queries the response was YES. [2023-11-17 11:29:42,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 542 events. 309/542 cut-off events. For 2383/2383 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2169 event pairs, 73 based on Foata normal form. 38/580 useless extension candidates. Maximal degree in co-relation 2186. Up to 415 conditions per place. [2023-11-17 11:29:42,662 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 52 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-11-17 11:29:42,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 56 transitions, 626 flow [2023-11-17 11:29:42,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:29:42,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:29:42,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2023-11-17 11:29:42,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5696969696969697 [2023-11-17 11:29:42,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 94 transitions. [2023-11-17 11:29:42,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 94 transitions. [2023-11-17 11:29:42,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:42,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 94 transitions. [2023-11-17 11:29:42,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,666 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 272 flow. Second operand 3 states and 94 transitions. [2023-11-17 11:29:42,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 56 transitions, 626 flow [2023-11-17 11:29:42,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 56 transitions, 616 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:29:42,672 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 293 flow [2023-11-17 11:29:42,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=293, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2023-11-17 11:29:42,675 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-11-17 11:29:42,675 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 293 flow [2023-11-17 11:29:42,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:42,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:42,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:29:42,676 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:42,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:42,676 INFO L85 PathProgramCache]: Analyzing trace with hash -977492015, now seen corresponding path program 1 times [2023-11-17 11:29:42,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:42,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023284147] [2023-11-17 11:29:42,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:42,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:42,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:42,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023284147] [2023-11-17 11:29:42,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023284147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:42,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:42,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:42,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126709822] [2023-11-17 11:29:42,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:42,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:42,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:42,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:42,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:42,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2023-11-17 11:29:42,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:42,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2023-11-17 11:29:42,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:42,858 INFO L124 PetriNetUnfolderBase]: 200/374 cut-off events. [2023-11-17 11:29:42,859 INFO L125 PetriNetUnfolderBase]: For 1447/1447 co-relation queries the response was YES. [2023-11-17 11:29:42,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 374 events. 200/374 cut-off events. For 1447/1447 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1434 event pairs, 44 based on Foata normal form. 42/416 useless extension candidates. Maximal degree in co-relation 1708. Up to 138 conditions per place. [2023-11-17 11:29:42,862 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 64 selfloop transitions, 7 changer transitions 0/71 dead transitions. [2023-11-17 11:29:42,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 71 transitions, 790 flow [2023-11-17 11:29:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2023-11-17 11:29:42,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5727272727272728 [2023-11-17 11:29:42,863 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 126 transitions. [2023-11-17 11:29:42,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 126 transitions. [2023-11-17 11:29:42,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:42,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 126 transitions. [2023-11-17 11:29:42,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,866 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 293 flow. Second operand 4 states and 126 transitions. [2023-11-17 11:29:42,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 71 transitions, 790 flow [2023-11-17 11:29:42,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 71 transitions, 786 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:29:42,871 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 329 flow [2023-11-17 11:29:42,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-11-17 11:29:42,873 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-11-17 11:29:42,874 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 329 flow [2023-11-17 11:29:42,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:42,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:42,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:29:42,874 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:42,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:42,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1230454906, now seen corresponding path program 1 times [2023-11-17 11:29:42,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:42,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712438621] [2023-11-17 11:29:42,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:42,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:42,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:42,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712438621] [2023-11-17 11:29:42,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712438621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:42,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:42,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:29:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576289715] [2023-11-17 11:29:42,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:42,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:29:42,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:42,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:29:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:29:42,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2023-11-17 11:29:42,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 329 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:42,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:42,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2023-11-17 11:29:42,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:43,067 INFO L124 PetriNetUnfolderBase]: 179/329 cut-off events. [2023-11-17 11:29:43,068 INFO L125 PetriNetUnfolderBase]: For 1491/1491 co-relation queries the response was YES. [2023-11-17 11:29:43,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1631 conditions, 329 events. 179/329 cut-off events. For 1491/1491 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1231 event pairs, 41 based on Foata normal form. 16/345 useless extension candidates. Maximal degree in co-relation 1603. Up to 138 conditions per place. [2023-11-17 11:29:43,071 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 59 selfloop transitions, 10 changer transitions 2/71 dead transitions. [2023-11-17 11:29:43,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 71 transitions, 814 flow [2023-11-17 11:29:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:29:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:29:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2023-11-17 11:29:43,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345454545454545 [2023-11-17 11:29:43,072 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 147 transitions. [2023-11-17 11:29:43,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 147 transitions. [2023-11-17 11:29:43,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:43,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 147 transitions. [2023-11-17 11:29:43,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.4) internal successors, (147), 5 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,074 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,074 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 329 flow. Second operand 5 states and 147 transitions. [2023-11-17 11:29:43,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 71 transitions, 814 flow [2023-11-17 11:29:43,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 71 transitions, 762 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-17 11:29:43,081 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 324 flow [2023-11-17 11:29:43,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-11-17 11:29:43,082 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-11-17 11:29:43,083 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 324 flow [2023-11-17 11:29:43,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:43,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:43,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:29:43,084 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:43,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:43,084 INFO L85 PathProgramCache]: Analyzing trace with hash -642873185, now seen corresponding path program 1 times [2023-11-17 11:29:43,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:43,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490385279] [2023-11-17 11:29:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:43,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:43,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:43,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490385279] [2023-11-17 11:29:43,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490385279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:43,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:43,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:43,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601765115] [2023-11-17 11:29:43,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:43,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:43,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:43,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:43,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 55 [2023-11-17 11:29:43,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:43,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 55 [2023-11-17 11:29:43,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:43,283 INFO L124 PetriNetUnfolderBase]: 208/394 cut-off events. [2023-11-17 11:29:43,283 INFO L125 PetriNetUnfolderBase]: For 1943/1943 co-relation queries the response was YES. [2023-11-17 11:29:43,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1931 conditions, 394 events. 208/394 cut-off events. For 1943/1943 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1646 event pairs, 26 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 1905. Up to 245 conditions per place. [2023-11-17 11:29:43,286 INFO L140 encePairwiseOnDemand]: 52/55 looper letters, 30 selfloop transitions, 1 changer transitions 41/72 dead transitions. [2023-11-17 11:29:43,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 778 flow [2023-11-17 11:29:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2023-11-17 11:29:43,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590909090909091 [2023-11-17 11:29:43,287 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 123 transitions. [2023-11-17 11:29:43,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 123 transitions. [2023-11-17 11:29:43,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:43,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 123 transitions. [2023-11-17 11:29:43,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,289 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,289 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 324 flow. Second operand 4 states and 123 transitions. [2023-11-17 11:29:43,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 778 flow [2023-11-17 11:29:43,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 722 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-17 11:29:43,294 INFO L231 Difference]: Finished difference. Result has 49 places, 28 transitions, 209 flow [2023-11-17 11:29:43,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=49, PETRI_TRANSITIONS=28} [2023-11-17 11:29:43,295 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 22 predicate places. [2023-11-17 11:29:43,295 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 28 transitions, 209 flow [2023-11-17 11:29:43,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:43,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:43,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:29:43,296 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:43,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:43,297 INFO L85 PathProgramCache]: Analyzing trace with hash 864466781, now seen corresponding path program 2 times [2023-11-17 11:29:43,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:43,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342082530] [2023-11-17 11:29:43,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:43,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:43,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:43,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:43,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:43,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342082530] [2023-11-17 11:29:43,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342082530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:43,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:43,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:43,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616239653] [2023-11-17 11:29:43,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:43,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:43,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:43,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:43,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:43,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2023-11-17 11:29:43,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 28 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:43,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2023-11-17 11:29:43,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:43,526 INFO L124 PetriNetUnfolderBase]: 89/205 cut-off events. [2023-11-17 11:29:43,526 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2023-11-17 11:29:43,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 950 conditions, 205 events. 89/205 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 746 event pairs, 23 based on Foata normal form. 1/206 useless extension candidates. Maximal degree in co-relation 931. Up to 110 conditions per place. [2023-11-17 11:29:43,527 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 22 selfloop transitions, 3 changer transitions 26/51 dead transitions. [2023-11-17 11:29:43,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 51 transitions, 451 flow [2023-11-17 11:29:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2023-11-17 11:29:43,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5181818181818182 [2023-11-17 11:29:43,529 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 114 transitions. [2023-11-17 11:29:43,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 114 transitions. [2023-11-17 11:29:43,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:43,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 114 transitions. [2023-11-17 11:29:43,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,531 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,531 INFO L175 Difference]: Start difference. First operand has 49 places, 28 transitions, 209 flow. Second operand 4 states and 114 transitions. [2023-11-17 11:29:43,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 51 transitions, 451 flow [2023-11-17 11:29:43,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 395 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-11-17 11:29:43,535 INFO L231 Difference]: Finished difference. Result has 44 places, 23 transitions, 136 flow [2023-11-17 11:29:43,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=44, PETRI_TRANSITIONS=23} [2023-11-17 11:29:43,536 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-11-17 11:29:43,536 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 23 transitions, 136 flow [2023-11-17 11:29:43,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:43,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:43,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:29:43,539 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:29:43,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:43,540 INFO L85 PathProgramCache]: Analyzing trace with hash 115455423, now seen corresponding path program 3 times [2023-11-17 11:29:43,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:43,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529887771] [2023-11-17 11:29:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:43,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:43,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:43,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:43,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529887771] [2023-11-17 11:29:43,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529887771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:43,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:43,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:43,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063498850] [2023-11-17 11:29:43,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:43,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:43,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:43,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:43,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:43,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 55 [2023-11-17 11:29:43,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 23 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:43,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 55 [2023-11-17 11:29:43,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:43,698 INFO L124 PetriNetUnfolderBase]: 25/67 cut-off events. [2023-11-17 11:29:43,698 INFO L125 PetriNetUnfolderBase]: For 150/150 co-relation queries the response was YES. [2023-11-17 11:29:43,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 67 events. 25/67 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 6 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 254. Up to 23 conditions per place. [2023-11-17 11:29:43,699 INFO L140 encePairwiseOnDemand]: 51/55 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-11-17 11:29:43,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 30 transitions, 230 flow [2023-11-17 11:29:43,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:29:43,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:29:43,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2023-11-17 11:29:43,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44727272727272727 [2023-11-17 11:29:43,700 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 123 transitions. [2023-11-17 11:29:43,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 123 transitions. [2023-11-17 11:29:43,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:43,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 123 transitions. [2023-11-17 11:29:43,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,702 INFO L175 Difference]: Start difference. First operand has 44 places, 23 transitions, 136 flow. Second operand 5 states and 123 transitions. [2023-11-17 11:29:43,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 30 transitions, 230 flow [2023-11-17 11:29:43,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 30 transitions, 198 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-11-17 11:29:43,704 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-11-17 11:29:43,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-11-17 11:29:43,705 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 11:29:43,705 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-11-17 11:29:43,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:43,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 11:29:43,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 11:29:43,708 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:29:43,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 11:29:43,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:29:43,709 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:43,712 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:29:43,712 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:29:43,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:29:43 BasicIcfg [2023-11-17 11:29:43,715 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:29:43,716 INFO L158 Benchmark]: Toolchain (without parser) took 5073.37ms. Allocated memory was 260.0MB in the beginning and 312.5MB in the end (delta: 52.4MB). Free memory was 205.8MB in the beginning and 111.3MB in the end (delta: 94.5MB). Peak memory consumption was 147.9MB. Max. memory is 8.0GB. [2023-11-17 11:29:43,716 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:29:43,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.63ms. Allocated memory is still 260.0MB. Free memory was 205.5MB in the beginning and 185.2MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:29:43,716 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.32ms. Allocated memory is still 260.0MB. Free memory was 185.2MB in the beginning and 183.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:29:43,716 INFO L158 Benchmark]: Boogie Preprocessor took 44.37ms. Allocated memory is still 260.0MB. Free memory was 183.1MB in the beginning and 181.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:29:43,717 INFO L158 Benchmark]: RCFGBuilder took 571.92ms. Allocated memory is still 260.0MB. Free memory was 181.7MB in the beginning and 217.4MB in the end (delta: -35.7MB). Peak memory consumption was 18.8MB. Max. memory is 8.0GB. [2023-11-17 11:29:43,717 INFO L158 Benchmark]: TraceAbstraction took 3810.00ms. Allocated memory was 260.0MB in the beginning and 312.5MB in the end (delta: 52.4MB). Free memory was 216.3MB in the beginning and 111.3MB in the end (delta: 105.0MB). Peak memory consumption was 157.4MB. Max. memory is 8.0GB. [2023-11-17 11:29:43,718 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 577.63ms. Allocated memory is still 260.0MB. Free memory was 205.5MB in the beginning and 185.2MB in the end (delta: 20.3MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 63.32ms. Allocated memory is still 260.0MB. Free memory was 185.2MB in the beginning and 183.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.37ms. Allocated memory is still 260.0MB. Free memory was 183.1MB in the beginning and 181.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 571.92ms. Allocated memory is still 260.0MB. Free memory was 181.7MB in the beginning and 217.4MB in the end (delta: -35.7MB). Peak memory consumption was 18.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3810.00ms. Allocated memory was 260.0MB in the beginning and 312.5MB in the end (delta: 52.4MB). Free memory was 216.3MB in the beginning and 111.3MB in the end (delta: 105.0MB). Peak memory consumption was 157.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.5s, 43 PlacesBefore, 27 PlacesAfterwards, 33 TransitionsBefore, 17 TransitionsAfterwards, 624 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 16 TotalNumberOfCompositions, 961 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 560, independent: 513, independent conditional: 0, independent unconditional: 513, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 416, independent: 386, independent conditional: 0, independent unconditional: 386, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 416, independent: 377, independent conditional: 0, independent unconditional: 377, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 39, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 105, independent: 28, independent conditional: 0, independent unconditional: 28, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 560, independent: 127, independent conditional: 0, independent unconditional: 127, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 416, unknown conditional: 0, unknown unconditional: 416] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 134 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 458 IncrementalHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 0 mSDtfsCounter, 458 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=329occurred in iteration=6, InterpolantAutomatonStates: 40, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:29:43,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...