/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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:27:34,434 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:27:34,508 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 11:27:34,552 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:27:34,553 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:27:34,553 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:27:34,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:27:34,554 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:27:34,555 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:27:34,557 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:27:34,557 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:27:34,558 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:27:34,558 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:27:34,558 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:27:34,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:27:34,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:27:34,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:27:34,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:27:34,560 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:27:34,560 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:27:34,560 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:27:34,561 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:27:34,561 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:27:34,562 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:27:34,562 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:27:34,562 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:27:34,562 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:27:34,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:27:34,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:27:34,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:27:34,564 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:27:34,564 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:27:34,564 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:27:34,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:27:34,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:27:34,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:27:34,824 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:27:34,825 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:27:34,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-17 11:27:36,023 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:27:36,310 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:27:36,311 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-17 11:27:36,326 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af6ffdb9/9f84f934ae3f4b0baed0e6ca5f69f6c4/FLAG29b056520 [2023-11-17 11:27:36,343 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2af6ffdb9/9f84f934ae3f4b0baed0e6ca5f69f6c4 [2023-11-17 11:27:36,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:27:36,347 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:27:36,348 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:27:36,348 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:27:36,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:27:36,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5294bc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36, skipping insertion in model container [2023-11-17 11:27:36,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,414 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:27:36,545 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-11-17 11:27:36,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:27:36,769 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:27:36,783 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-11-17 11:27:36,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:27:36,865 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:27:36,865 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:27:36,872 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:27:36,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36 WrapperNode [2023-11-17 11:27:36,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:27:36,876 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:27:36,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:27:36,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:27:36,883 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,931 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2023-11-17 11:27:36,932 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:27:36,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:27:36,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:27:36,933 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:27:36,942 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,942 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,946 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,955 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,960 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:27:36,967 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:27:36,967 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:27:36,967 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:27:36,968 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (1/1) ... [2023-11-17 11:27:36,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:27:36,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:27:37,011 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 11:27:37,013 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 11:27:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:27:37,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:27:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:27:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:27:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:27:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:27:37,035 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:27:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:27:37,035 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:27:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:27:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:27:37,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:27:37,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:27:37,037 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 11:27:37,217 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:27:37,219 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:27:37,697 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:27:37,958 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:27:37,960 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:27:37,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:27:37 BoogieIcfgContainer [2023-11-17 11:27:37,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:27:37,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:27:37,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:27:37,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:27:37,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:27:36" (1/3) ... [2023-11-17 11:27:37,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f72cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:27:37, skipping insertion in model container [2023-11-17 11:27:37,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:36" (2/3) ... [2023-11-17 11:27:37,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f72cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:27:37, skipping insertion in model container [2023-11-17 11:27:37,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:27:37" (3/3) ... [2023-11-17 11:27:37,972 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-17 11:27:37,990 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:27:37,990 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 11:27:37,990 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:27:38,042 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:27:38,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 74 flow [2023-11-17 11:27:38,110 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2023-11-17 11:27:38,111 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:27:38,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 1/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2023-11-17 11:27:38,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 74 flow [2023-11-17 11:27:38,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 31 transitions, 68 flow [2023-11-17 11:27:38,126 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:27:38,143 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 31 transitions, 68 flow [2023-11-17 11:27:38,147 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 31 transitions, 68 flow [2023-11-17 11:27:38,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 31 transitions, 68 flow [2023-11-17 11:27:38,166 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2023-11-17 11:27:38,167 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:27:38,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 1/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 31. Up to 2 conditions per place. [2023-11-17 11:27:38,168 INFO L119 LiptonReduction]: Number of co-enabled transitions 506 [2023-11-17 11:27:40,290 INFO L134 LiptonReduction]: Checked pairs total: 1445 [2023-11-17 11:27:40,290 INFO L136 LiptonReduction]: Total number of compositions: 17 [2023-11-17 11:27:40,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:27:40,316 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;@31a1977c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:27:40,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 11:27:40,321 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:27:40,321 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-17 11:27:40,321 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:27:40,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:40,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-17 11:27:40,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:40,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash 382345344, now seen corresponding path program 1 times [2023-11-17 11:27:40,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:40,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521468593] [2023-11-17 11:27:40,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:40,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:40,753 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 11:27:40,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:40,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521468593] [2023-11-17 11:27:40,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521468593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:40,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:40,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:27:40,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994414337] [2023-11-17 11:27:40,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:40,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:27:40,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:40,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:27:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:27:40,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 50 [2023-11-17 11:27:40,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:40,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:40,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 50 [2023-11-17 11:27:40,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:40,987 INFO L124 PetriNetUnfolderBase]: 275/468 cut-off events. [2023-11-17 11:27:40,987 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 11:27:40,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 468 events. 275/468 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1788 event pairs, 30 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 944. Up to 396 conditions per place. [2023-11-17 11:27:40,992 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 23 selfloop transitions, 2 changer transitions 2/27 dead transitions. [2023-11-17 11:27:40,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 114 flow [2023-11-17 11:27:40,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:41,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2023-11-17 11:27:41,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2023-11-17 11:27:41,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 67 transitions. [2023-11-17 11:27:41,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 67 transitions. [2023-11-17 11:27:41,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:41,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 67 transitions. [2023-11-17 11:27:41,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 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 11:27:41,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 11:27:41,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 11:27:41,020 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 44 flow. Second operand 3 states and 67 transitions. [2023-11-17 11:27:41,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 114 flow [2023-11-17 11:27:41,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:41,024 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 42 flow [2023-11-17 11:27:41,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-11-17 11:27:41,031 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-11-17 11:27:41,032 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 42 flow [2023-11-17 11:27:41,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:41,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:41,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:41,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:27:41,033 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:41,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:41,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1933294975, now seen corresponding path program 1 times [2023-11-17 11:27:41,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:41,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715932625] [2023-11-17 11:27:41,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:41,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:41,710 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 11:27:41,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:41,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715932625] [2023-11-17 11:27:41,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715932625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:41,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:41,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:27:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174463788] [2023-11-17 11:27:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:41,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:27:41,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:41,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:27:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:27:41,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2023-11-17 11:27:41,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 11:27:41,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:41,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2023-11-17 11:27:41,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:41,851 INFO L124 PetriNetUnfolderBase]: 182/321 cut-off events. [2023-11-17 11:27:41,851 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-17 11:27:41,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 321 events. 182/321 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1142 event pairs, 80 based on Foata normal form. 18/339 useless extension candidates. Maximal degree in co-relation 671. Up to 193 conditions per place. [2023-11-17 11:27:41,854 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-11-17 11:27:41,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 116 flow [2023-11-17 11:27:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:41,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2023-11-17 11:27:41,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-17 11:27:41,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 60 transitions. [2023-11-17 11:27:41,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 60 transitions. [2023-11-17 11:27:41,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:41,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 60 transitions. [2023-11-17 11:27:41,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 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 11:27:41,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 11:27:41,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 11:27:41,858 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 42 flow. Second operand 3 states and 60 transitions. [2023-11-17 11:27:41,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 116 flow [2023-11-17 11:27:41,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:41,859 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 46 flow [2023-11-17 11:27:41,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-11-17 11:27:41,860 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-11-17 11:27:41,861 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 46 flow [2023-11-17 11:27:41,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 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 11:27:41,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:41,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:41,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:27:41,861 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:41,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:41,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1034954217, now seen corresponding path program 1 times [2023-11-17 11:27:41,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:41,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683000605] [2023-11-17 11:27:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:41,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:42,393 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 11:27:42,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683000605] [2023-11-17 11:27:42,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683000605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:42,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:42,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:27:42,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965485113] [2023-11-17 11:27:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:42,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:27:42,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:42,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:27:42,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:27:42,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 50 [2023-11-17 11:27:42,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 11:27:42,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:42,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 50 [2023-11-17 11:27:42,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:42,518 INFO L124 PetriNetUnfolderBase]: 172/305 cut-off events. [2023-11-17 11:27:42,518 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-17 11:27:42,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 305 events. 172/305 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 993 event pairs, 56 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 670. Up to 210 conditions per place. [2023-11-17 11:27:42,522 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-11-17 11:27:42,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 111 flow [2023-11-17 11:27:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2023-11-17 11:27:42,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38666666666666666 [2023-11-17 11:27:42,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 58 transitions. [2023-11-17 11:27:42,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 58 transitions. [2023-11-17 11:27:42,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:42,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 58 transitions. [2023-11-17 11:27:42,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 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 11:27:42,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 11:27:42,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 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 11:27:42,527 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 46 flow. Second operand 3 states and 58 transitions. [2023-11-17 11:27:42,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 111 flow [2023-11-17 11:27:42,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:42,528 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 50 flow [2023-11-17 11:27:42,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-11-17 11:27:42,530 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-11-17 11:27:42,530 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 50 flow [2023-11-17 11:27:42,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 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 11:27:42,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:42,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:42,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:27:42,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:42,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1728429901, now seen corresponding path program 1 times [2023-11-17 11:27:42,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:42,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730889796] [2023-11-17 11:27:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:42,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:43,393 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 11:27:43,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:43,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730889796] [2023-11-17 11:27:43,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730889796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:43,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:43,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:27:43,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751616487] [2023-11-17 11:27:43,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:43,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:27:43,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:43,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:27:43,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:27:43,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:43,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 50 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 11:27:43,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:43,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:43,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:43,615 INFO L124 PetriNetUnfolderBase]: 206/363 cut-off events. [2023-11-17 11:27:43,615 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-17 11:27:43,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 856 conditions, 363 events. 206/363 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1324 event pairs, 7 based on Foata normal form. 3/366 useless extension candidates. Maximal degree in co-relation 844. Up to 241 conditions per place. [2023-11-17 11:27:43,618 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 30 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2023-11-17 11:27:43,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 175 flow [2023-11-17 11:27:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:27:43,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:27:43,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2023-11-17 11:27:43,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396 [2023-11-17 11:27:43,620 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 99 transitions. [2023-11-17 11:27:43,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 99 transitions. [2023-11-17 11:27:43,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:43,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 99 transitions. [2023-11-17 11:27:43,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 11:27:43,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 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 11:27:43,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 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 11:27:43,624 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 50 flow. Second operand 5 states and 99 transitions. [2023-11-17 11:27:43,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 175 flow [2023-11-17 11:27:43,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:43,627 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 96 flow [2023-11-17 11:27:43,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=96, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-17 11:27:43,628 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-11-17 11:27:43,629 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 96 flow [2023-11-17 11:27:43,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 11:27:43,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:43,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:43,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:27:43,630 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:43,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1479771059, now seen corresponding path program 2 times [2023-11-17 11:27:43,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:43,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560532416] [2023-11-17 11:27:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:43,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:44,160 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 11:27:44,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:44,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560532416] [2023-11-17 11:27:44,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560532416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:44,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:44,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:27:44,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795841999] [2023-11-17 11:27:44,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:44,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:27:44,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:44,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:27:44,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:27:44,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:44,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 11:27:44,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:44,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:44,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:44,391 INFO L124 PetriNetUnfolderBase]: 228/402 cut-off events. [2023-11-17 11:27:44,391 INFO L125 PetriNetUnfolderBase]: For 145/145 co-relation queries the response was YES. [2023-11-17 11:27:44,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1122 conditions, 402 events. 228/402 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1491 event pairs, 24 based on Foata normal form. 4/406 useless extension candidates. Maximal degree in co-relation 1108. Up to 260 conditions per place. [2023-11-17 11:27:44,394 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 31 selfloop transitions, 13 changer transitions 0/44 dead transitions. [2023-11-17 11:27:44,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 250 flow [2023-11-17 11:27:44,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:27:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:27:44,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2023-11-17 11:27:44,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37333333333333335 [2023-11-17 11:27:44,396 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 112 transitions. [2023-11-17 11:27:44,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 112 transitions. [2023-11-17 11:27:44,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:44,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 112 transitions. [2023-11-17 11:27:44,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:44,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 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 11:27:44,399 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 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 11:27:44,399 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 96 flow. Second operand 6 states and 112 transitions. [2023-11-17 11:27:44,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 250 flow [2023-11-17 11:27:44,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:27:44,401 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 182 flow [2023-11-17 11:27:44,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-17 11:27:44,402 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-11-17 11:27:44,402 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 182 flow [2023-11-17 11:27:44,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 11:27:44,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:44,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:44,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:27:44,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:44,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:44,403 INFO L85 PathProgramCache]: Analyzing trace with hash -88072865, now seen corresponding path program 1 times [2023-11-17 11:27:44,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:44,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523106013] [2023-11-17 11:27:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:44,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:44,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:45,645 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 11:27:45,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:45,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523106013] [2023-11-17 11:27:45,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523106013] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:45,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:45,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:27:45,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422147344] [2023-11-17 11:27:45,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:45,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:27:45,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:45,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:27:45,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:27:45,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:45,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 182 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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 11:27:45,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:45,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:45,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:46,002 INFO L124 PetriNetUnfolderBase]: 251/448 cut-off events. [2023-11-17 11:27:46,002 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2023-11-17 11:27:46,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 448 events. 251/448 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1782 event pairs, 29 based on Foata normal form. 4/452 useless extension candidates. Maximal degree in co-relation 1466. Up to 327 conditions per place. [2023-11-17 11:27:46,007 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 48 selfloop transitions, 27 changer transitions 0/75 dead transitions. [2023-11-17 11:27:46,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 75 transitions, 509 flow [2023-11-17 11:27:46,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:27:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:27:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2023-11-17 11:27:46,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38 [2023-11-17 11:27:46,011 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 171 transitions. [2023-11-17 11:27:46,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 171 transitions. [2023-11-17 11:27:46,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:46,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 171 transitions. [2023-11-17 11:27:46,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 19.0) internal successors, (171), 9 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:46,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:27:46,015 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:27:46,015 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 182 flow. Second operand 9 states and 171 transitions. [2023-11-17 11:27:46,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 75 transitions, 509 flow [2023-11-17 11:27:46,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 75 transitions, 506 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 11:27:46,023 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 415 flow [2023-11-17 11:27:46,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=415, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2023-11-17 11:27:46,025 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2023-11-17 11:27:46,026 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 415 flow [2023-11-17 11:27:46,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 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 11:27:46,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:46,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:46,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:27:46,026 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:46,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:46,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1594692959, now seen corresponding path program 1 times [2023-11-17 11:27:46,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:46,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907245862] [2023-11-17 11:27:46,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:46,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:46,395 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 11:27:46,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:46,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907245862] [2023-11-17 11:27:46,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907245862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:46,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:46,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:27:46,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959876465] [2023-11-17 11:27:46,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:46,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:27:46,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:46,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:27:46,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:27:46,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2023-11-17 11:27:46,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 415 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:27:46,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:46,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2023-11-17 11:27:46,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:46,606 INFO L124 PetriNetUnfolderBase]: 103/241 cut-off events. [2023-11-17 11:27:46,606 INFO L125 PetriNetUnfolderBase]: For 689/689 co-relation queries the response was YES. [2023-11-17 11:27:46,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 241 events. 103/241 cut-off events. For 689/689 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 962 event pairs, 13 based on Foata normal form. 50/291 useless extension candidates. Maximal degree in co-relation 989. Up to 87 conditions per place. [2023-11-17 11:27:46,609 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 37 selfloop transitions, 14 changer transitions 27/78 dead transitions. [2023-11-17 11:27:46,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 694 flow [2023-11-17 11:27:46,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:27:46,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:27:46,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2023-11-17 11:27:46,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3657142857142857 [2023-11-17 11:27:46,611 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 128 transitions. [2023-11-17 11:27:46,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 128 transitions. [2023-11-17 11:27:46,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:46,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 128 transitions. [2023-11-17 11:27:46,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 11:27:46,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 11:27:46,614 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 11:27:46,614 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 415 flow. Second operand 7 states and 128 transitions. [2023-11-17 11:27:46,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 694 flow [2023-11-17 11:27:46,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 639 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-11-17 11:27:46,621 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 316 flow [2023-11-17 11:27:46,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2023-11-17 11:27:46,622 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 29 predicate places. [2023-11-17 11:27:46,622 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 316 flow [2023-11-17 11:27:46,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:27:46,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:46,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:46,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:27:46,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:46,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash 184370021, now seen corresponding path program 1 times [2023-11-17 11:27:46,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:46,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826977390] [2023-11-17 11:27:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:46,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:47,695 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 11:27:47,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:47,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826977390] [2023-11-17 11:27:47,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826977390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:47,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:47,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:27:47,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906894312] [2023-11-17 11:27:47,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:47,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:27:47,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:47,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:27:47,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:27:47,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:47,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 316 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 11:27:47,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:47,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:47,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:47,949 INFO L124 PetriNetUnfolderBase]: 72/176 cut-off events. [2023-11-17 11:27:47,950 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2023-11-17 11:27:47,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 819 conditions, 176 events. 72/176 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 615 event pairs, 15 based on Foata normal form. 1/177 useless extension candidates. Maximal degree in co-relation 792. Up to 103 conditions per place. [2023-11-17 11:27:47,952 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 39 selfloop transitions, 15 changer transitions 1/55 dead transitions. [2023-11-17 11:27:47,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 55 transitions, 524 flow [2023-11-17 11:27:47,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:27:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:27:47,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2023-11-17 11:27:47,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3628571428571429 [2023-11-17 11:27:47,954 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 127 transitions. [2023-11-17 11:27:47,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 127 transitions. [2023-11-17 11:27:47,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:47,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 127 transitions. [2023-11-17 11:27:47,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 11:27:47,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 11:27:47,959 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 11:27:47,959 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 316 flow. Second operand 7 states and 127 transitions. [2023-11-17 11:27:47,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 55 transitions, 524 flow [2023-11-17 11:27:47,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 503 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-17 11:27:47,964 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 369 flow [2023-11-17 11:27:47,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-11-17 11:27:47,967 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 31 predicate places. [2023-11-17 11:27:47,967 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 369 flow [2023-11-17 11:27:47,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 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 11:27:47,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:47,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:47,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:27:47,968 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:47,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:47,969 INFO L85 PathProgramCache]: Analyzing trace with hash -796384467, now seen corresponding path program 2 times [2023-11-17 11:27:47,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:47,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409255365] [2023-11-17 11:27:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:47,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:49,182 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 11:27:49,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:49,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409255365] [2023-11-17 11:27:49,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409255365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:49,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:49,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:27:49,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412609167] [2023-11-17 11:27:49,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:49,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:27:49,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:49,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:27:49,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:27:49,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:49,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 369 flow. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 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 11:27:49,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:49,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:49,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:49,470 INFO L124 PetriNetUnfolderBase]: 78/189 cut-off events. [2023-11-17 11:27:49,470 INFO L125 PetriNetUnfolderBase]: For 645/645 co-relation queries the response was YES. [2023-11-17 11:27:49,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 189 events. 78/189 cut-off events. For 645/645 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 683 event pairs, 24 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 851. Up to 66 conditions per place. [2023-11-17 11:27:49,472 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 43 selfloop transitions, 22 changer transitions 1/66 dead transitions. [2023-11-17 11:27:49,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 654 flow [2023-11-17 11:27:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:27:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:27:49,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2023-11-17 11:27:49,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37 [2023-11-17 11:27:49,474 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 148 transitions. [2023-11-17 11:27:49,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 148 transitions. [2023-11-17 11:27:49,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:49,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 148 transitions. [2023-11-17 11:27:49,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 18.5) internal successors, (148), 8 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 11:27:49,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 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 11:27:49,478 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 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 11:27:49,478 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 369 flow. Second operand 8 states and 148 transitions. [2023-11-17 11:27:49,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 654 flow [2023-11-17 11:27:49,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 612 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-17 11:27:49,484 INFO L231 Difference]: Finished difference. Result has 62 places, 48 transitions, 458 flow [2023-11-17 11:27:49,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=458, PETRI_PLACES=62, PETRI_TRANSITIONS=48} [2023-11-17 11:27:49,486 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2023-11-17 11:27:49,486 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 48 transitions, 458 flow [2023-11-17 11:27:49,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 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 11:27:49,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:49,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:49,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:27:49,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:49,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash -293665207, now seen corresponding path program 1 times [2023-11-17 11:27:49,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:49,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158766651] [2023-11-17 11:27:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:49,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:50,037 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 11:27:50,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:50,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158766651] [2023-11-17 11:27:50,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158766651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:50,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:50,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:27:50,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823339130] [2023-11-17 11:27:50,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:50,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:27:50,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:50,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:27:50,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:27:50,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:50,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 48 transitions, 458 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 11:27:50,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:50,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:50,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:50,284 INFO L124 PetriNetUnfolderBase]: 92/226 cut-off events. [2023-11-17 11:27:50,284 INFO L125 PetriNetUnfolderBase]: For 1047/1047 co-relation queries the response was YES. [2023-11-17 11:27:50,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 226 events. 92/226 cut-off events. For 1047/1047 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 911 event pairs, 9 based on Foata normal form. 6/232 useless extension candidates. Maximal degree in co-relation 1097. Up to 88 conditions per place. [2023-11-17 11:27:50,286 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 31 selfloop transitions, 12 changer transitions 31/74 dead transitions. [2023-11-17 11:27:50,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 772 flow [2023-11-17 11:27:50,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:27:50,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:27:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2023-11-17 11:27:50,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-11-17 11:27:50,288 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 150 transitions. [2023-11-17 11:27:50,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 150 transitions. [2023-11-17 11:27:50,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:50,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 150 transitions. [2023-11-17 11:27:50,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 0 states have call successors, (0), 0 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 11:27:50,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 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 11:27:50,290 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 50.0) internal successors, (450), 9 states have internal predecessors, (450), 0 states have call successors, (0), 0 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 11:27:50,290 INFO L175 Difference]: Start difference. First operand has 62 places, 48 transitions, 458 flow. Second operand 8 states and 150 transitions. [2023-11-17 11:27:50,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 772 flow [2023-11-17 11:27:50,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 719 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:50,297 INFO L231 Difference]: Finished difference. Result has 70 places, 37 transitions, 358 flow [2023-11-17 11:27:50,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=358, PETRI_PLACES=70, PETRI_TRANSITIONS=37} [2023-11-17 11:27:50,300 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 44 predicate places. [2023-11-17 11:27:50,300 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 37 transitions, 358 flow [2023-11-17 11:27:50,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 11:27:50,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:50,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:50,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:27:50,301 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:50,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash -217552947, now seen corresponding path program 2 times [2023-11-17 11:27:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:50,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437863692] [2023-11-17 11:27:50,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:50,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:51,003 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 11:27:51,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:51,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437863692] [2023-11-17 11:27:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437863692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:51,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:51,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:27:51,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820801101] [2023-11-17 11:27:51,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:51,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:27:51,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:27:51,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:27:51,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:51,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 37 transitions, 358 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 11:27:51,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:51,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:51,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:51,252 INFO L124 PetriNetUnfolderBase]: 59/152 cut-off events. [2023-11-17 11:27:51,253 INFO L125 PetriNetUnfolderBase]: For 863/863 co-relation queries the response was YES. [2023-11-17 11:27:51,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 152 events. 59/152 cut-off events. For 863/863 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 501 event pairs, 7 based on Foata normal form. 4/156 useless extension candidates. Maximal degree in co-relation 753. Up to 76 conditions per place. [2023-11-17 11:27:51,254 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 32 selfloop transitions, 13 changer transitions 12/57 dead transitions. [2023-11-17 11:27:51,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 57 transitions, 587 flow [2023-11-17 11:27:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:27:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:27:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2023-11-17 11:27:51,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33555555555555555 [2023-11-17 11:27:51,257 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 151 transitions. [2023-11-17 11:27:51,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 151 transitions. [2023-11-17 11:27:51,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:51,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 151 transitions. [2023-11-17 11:27:51,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 11:27:51,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:27:51,259 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:27:51,259 INFO L175 Difference]: Start difference. First operand has 70 places, 37 transitions, 358 flow. Second operand 9 states and 151 transitions. [2023-11-17 11:27:51,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 57 transitions, 587 flow [2023-11-17 11:27:51,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 519 flow, removed 16 selfloop flow, removed 12 redundant places. [2023-11-17 11:27:51,264 INFO L231 Difference]: Finished difference. Result has 65 places, 38 transitions, 348 flow [2023-11-17 11:27:51,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=348, PETRI_PLACES=65, PETRI_TRANSITIONS=38} [2023-11-17 11:27:51,265 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 39 predicate places. [2023-11-17 11:27:51,265 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 38 transitions, 348 flow [2023-11-17 11:27:51,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 11:27:51,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:51,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:51,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 11:27:51,265 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:51,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:51,266 INFO L85 PathProgramCache]: Analyzing trace with hash -556171003, now seen corresponding path program 3 times [2023-11-17 11:27:51,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:51,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622433584] [2023-11-17 11:27:51,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:51,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:51,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:51,896 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 11:27:51,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:51,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622433584] [2023-11-17 11:27:51,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622433584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:51,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:51,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:27:51,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529060809] [2023-11-17 11:27:51,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:51,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:27:51,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:51,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:27:51,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:27:51,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:51,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 38 transitions, 348 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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 11:27:51,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:51,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:51,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:52,027 INFO L124 PetriNetUnfolderBase]: 48/128 cut-off events. [2023-11-17 11:27:52,028 INFO L125 PetriNetUnfolderBase]: For 533/533 co-relation queries the response was YES. [2023-11-17 11:27:52,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 128 events. 48/128 cut-off events. For 533/533 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 380 event pairs, 19 based on Foata normal form. 2/130 useless extension candidates. Maximal degree in co-relation 618. Up to 97 conditions per place. [2023-11-17 11:27:52,030 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 29 selfloop transitions, 14 changer transitions 0/43 dead transitions. [2023-11-17 11:27:52,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 43 transitions, 455 flow [2023-11-17 11:27:52,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:27:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:27:52,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2023-11-17 11:27:52,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34 [2023-11-17 11:27:52,032 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 102 transitions. [2023-11-17 11:27:52,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 102 transitions. [2023-11-17 11:27:52,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:52,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 102 transitions. [2023-11-17 11:27:52,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 11:27:52,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 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 11:27:52,033 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 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 11:27:52,034 INFO L175 Difference]: Start difference. First operand has 65 places, 38 transitions, 348 flow. Second operand 6 states and 102 transitions. [2023-11-17 11:27:52,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 43 transitions, 455 flow [2023-11-17 11:27:52,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 43 transitions, 417 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-11-17 11:27:52,037 INFO L231 Difference]: Finished difference. Result has 62 places, 38 transitions, 352 flow [2023-11-17 11:27:52,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=62, PETRI_TRANSITIONS=38} [2023-11-17 11:27:52,038 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 36 predicate places. [2023-11-17 11:27:52,038 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 38 transitions, 352 flow [2023-11-17 11:27:52,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 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 11:27:52,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:52,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:52,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 11:27:52,039 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:52,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1611483757, now seen corresponding path program 4 times [2023-11-17 11:27:52,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:52,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299807357] [2023-11-17 11:27:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:52,723 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 11:27:52,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:52,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299807357] [2023-11-17 11:27:52,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299807357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:52,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:52,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:27:52,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836446164] [2023-11-17 11:27:52,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:52,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:27:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:27:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-17 11:27:52,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:52,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 38 transitions, 352 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 11:27:52,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:52,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:52,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:52,967 INFO L124 PetriNetUnfolderBase]: 63/168 cut-off events. [2023-11-17 11:27:52,967 INFO L125 PetriNetUnfolderBase]: For 763/763 co-relation queries the response was YES. [2023-11-17 11:27:52,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 168 events. 63/168 cut-off events. For 763/763 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 597 event pairs, 19 based on Foata normal form. 5/173 useless extension candidates. Maximal degree in co-relation 812. Up to 101 conditions per place. [2023-11-17 11:27:52,968 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 36 selfloop transitions, 13 changer transitions 11/60 dead transitions. [2023-11-17 11:27:52,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 613 flow [2023-11-17 11:27:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 11:27:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 11:27:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2023-11-17 11:27:52,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.326 [2023-11-17 11:27:52,970 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 163 transitions. [2023-11-17 11:27:52,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 163 transitions. [2023-11-17 11:27:52,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:52,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 163 transitions. [2023-11-17 11:27:52,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.3) internal successors, (163), 10 states have internal predecessors, (163), 0 states have call successors, (0), 0 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 11:27:52,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 11:27:52,972 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 11:27:52,972 INFO L175 Difference]: Start difference. First operand has 62 places, 38 transitions, 352 flow. Second operand 10 states and 163 transitions. [2023-11-17 11:27:52,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 613 flow [2023-11-17 11:27:52,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 60 transitions, 605 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:27:52,976 INFO L231 Difference]: Finished difference. Result has 72 places, 41 transitions, 426 flow [2023-11-17 11:27:52,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=426, PETRI_PLACES=72, PETRI_TRANSITIONS=41} [2023-11-17 11:27:52,977 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2023-11-17 11:27:52,977 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 41 transitions, 426 flow [2023-11-17 11:27:52,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 11:27:52,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:52,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:52,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 11:27:52,978 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:52,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:52,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1759745937, now seen corresponding path program 5 times [2023-11-17 11:27:52,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:52,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609917273] [2023-11-17 11:27:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:52,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:54,009 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 11:27:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:54,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609917273] [2023-11-17 11:27:54,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609917273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:54,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:54,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:27:54,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115004543] [2023-11-17 11:27:54,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:54,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:27:54,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:54,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:27:54,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-17 11:27:54,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:54,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 41 transitions, 426 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 11:27:54,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:54,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:54,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:54,312 INFO L124 PetriNetUnfolderBase]: 53/144 cut-off events. [2023-11-17 11:27:54,312 INFO L125 PetriNetUnfolderBase]: For 809/809 co-relation queries the response was YES. [2023-11-17 11:27:54,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 144 events. 53/144 cut-off events. For 809/809 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 470 event pairs, 11 based on Foata normal form. 5/149 useless extension candidates. Maximal degree in co-relation 734. Up to 53 conditions per place. [2023-11-17 11:27:54,314 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 31 selfloop transitions, 13 changer transitions 15/59 dead transitions. [2023-11-17 11:27:54,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 59 transitions, 659 flow [2023-11-17 11:27:54,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:27:54,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:27:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2023-11-17 11:27:54,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3422222222222222 [2023-11-17 11:27:54,315 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 154 transitions. [2023-11-17 11:27:54,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 154 transitions. [2023-11-17 11:27:54,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:54,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 154 transitions. [2023-11-17 11:27:54,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 17.11111111111111) internal successors, (154), 9 states have internal predecessors, (154), 0 states have call successors, (0), 0 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 11:27:54,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:27:54,317 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:27:54,317 INFO L175 Difference]: Start difference. First operand has 72 places, 41 transitions, 426 flow. Second operand 9 states and 154 transitions. [2023-11-17 11:27:54,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 59 transitions, 659 flow [2023-11-17 11:27:54,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 59 transitions, 623 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-17 11:27:54,322 INFO L231 Difference]: Finished difference. Result has 76 places, 34 transitions, 382 flow [2023-11-17 11:27:54,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=382, PETRI_PLACES=76, PETRI_TRANSITIONS=34} [2023-11-17 11:27:54,323 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 50 predicate places. [2023-11-17 11:27:54,323 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 34 transitions, 382 flow [2023-11-17 11:27:54,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 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 11:27:54,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:54,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:54,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 11:27:54,329 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:54,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash -514782580, now seen corresponding path program 1 times [2023-11-17 11:27:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:54,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156460525] [2023-11-17 11:27:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:54,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:54,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:54,927 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 11:27:54,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:54,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156460525] [2023-11-17 11:27:54,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156460525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:54,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:54,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:27:54,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321037372] [2023-11-17 11:27:54,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:54,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:27:54,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:27:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:27:54,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:54,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 34 transitions, 382 flow. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 11:27:54,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:54,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:54,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:55,091 INFO L124 PetriNetUnfolderBase]: 31/102 cut-off events. [2023-11-17 11:27:55,091 INFO L125 PetriNetUnfolderBase]: For 552/552 co-relation queries the response was YES. [2023-11-17 11:27:55,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 102 events. 31/102 cut-off events. For 552/552 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 303 event pairs, 8 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 514. Up to 61 conditions per place. [2023-11-17 11:27:55,094 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 21 selfloop transitions, 10 changer transitions 9/40 dead transitions. [2023-11-17 11:27:55,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 40 transitions, 491 flow [2023-11-17 11:27:55,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:27:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:27:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2023-11-17 11:27:55,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32857142857142857 [2023-11-17 11:27:55,095 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 115 transitions. [2023-11-17 11:27:55,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 115 transitions. [2023-11-17 11:27:55,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:55,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 115 transitions. [2023-11-17 11:27:55,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 11:27:55,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 11:27:55,097 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 50.0) internal successors, (400), 8 states have internal predecessors, (400), 0 states have call successors, (0), 0 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 11:27:55,097 INFO L175 Difference]: Start difference. First operand has 76 places, 34 transitions, 382 flow. Second operand 7 states and 115 transitions. [2023-11-17 11:27:55,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 40 transitions, 491 flow [2023-11-17 11:27:55,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 40 transitions, 431 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-11-17 11:27:55,104 INFO L231 Difference]: Finished difference. Result has 74 places, 29 transitions, 304 flow [2023-11-17 11:27:55,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=74, PETRI_TRANSITIONS=29} [2023-11-17 11:27:55,105 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 48 predicate places. [2023-11-17 11:27:55,105 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 29 transitions, 304 flow [2023-11-17 11:27:55,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 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 11:27:55,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:55,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:55,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 11:27:55,106 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:55,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1085923204, now seen corresponding path program 2 times [2023-11-17 11:27:55,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:55,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791879559] [2023-11-17 11:27:55,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:55,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:56,235 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 11:27:56,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:56,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791879559] [2023-11-17 11:27:56,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791879559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:56,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:56,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:27:56,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648099160] [2023-11-17 11:27:56,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:56,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 11:27:56,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:56,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 11:27:56,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-17 11:27:56,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:56,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 29 transitions, 304 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:27:56,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:56,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:56,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:56,544 INFO L124 PetriNetUnfolderBase]: 24/82 cut-off events. [2023-11-17 11:27:56,544 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2023-11-17 11:27:56,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 82 events. 24/82 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 215 event pairs, 3 based on Foata normal form. 2/84 useless extension candidates. Maximal degree in co-relation 399. Up to 36 conditions per place. [2023-11-17 11:27:56,545 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 21 selfloop transitions, 7 changer transitions 12/40 dead transitions. [2023-11-17 11:27:56,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 40 transitions, 424 flow [2023-11-17 11:27:56,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 11:27:56,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 11:27:56,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2023-11-17 11:27:56,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.316 [2023-11-17 11:27:56,547 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 158 transitions. [2023-11-17 11:27:56,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 158 transitions. [2023-11-17 11:27:56,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:56,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 158 transitions. [2023-11-17 11:27:56,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 15.8) internal successors, (158), 10 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 11:27:56,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 11:27:56,549 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 50.0) internal successors, (550), 11 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 11:27:56,549 INFO L175 Difference]: Start difference. First operand has 74 places, 29 transitions, 304 flow. Second operand 10 states and 158 transitions. [2023-11-17 11:27:56,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 40 transitions, 424 flow [2023-11-17 11:27:56,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 40 transitions, 356 flow, removed 7 selfloop flow, removed 12 redundant places. [2023-11-17 11:27:56,552 INFO L231 Difference]: Finished difference. Result has 67 places, 23 transitions, 201 flow [2023-11-17 11:27:56,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=201, PETRI_PLACES=67, PETRI_TRANSITIONS=23} [2023-11-17 11:27:56,553 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 41 predicate places. [2023-11-17 11:27:56,553 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 23 transitions, 201 flow [2023-11-17 11:27:56,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:27:56,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:56,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 11:27:56,553 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:56,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash -46440524, now seen corresponding path program 3 times [2023-11-17 11:27:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:56,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042514266] [2023-11-17 11:27:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:57,613 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 11:27:57,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:57,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042514266] [2023-11-17 11:27:57,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042514266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:57,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:57,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:27:57,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398769752] [2023-11-17 11:27:57,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:57,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 11:27:57,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:57,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 11:27:57,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-17 11:27:57,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:57,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 23 transitions, 201 flow. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:27:57,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:57,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:57,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:57,899 INFO L124 PetriNetUnfolderBase]: 16/61 cut-off events. [2023-11-17 11:27:57,899 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-17 11:27:57,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 61 events. 16/61 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 1 based on Foata normal form. 2/63 useless extension candidates. Maximal degree in co-relation 279. Up to 22 conditions per place. [2023-11-17 11:27:57,900 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 15 selfloop transitions, 5 changer transitions 17/37 dead transitions. [2023-11-17 11:27:57,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 37 transitions, 336 flow [2023-11-17 11:27:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:27:57,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:27:57,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2023-11-17 11:27:57,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30333333333333334 [2023-11-17 11:27:57,904 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 182 transitions. [2023-11-17 11:27:57,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 182 transitions. [2023-11-17 11:27:57,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:57,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 182 transitions. [2023-11-17 11:27:57,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 15.166666666666666) internal successors, (182), 12 states have internal predecessors, (182), 0 states have call successors, (0), 0 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 11:27:57,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 50.0) internal successors, (650), 13 states have internal predecessors, (650), 0 states have call successors, (0), 0 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 11:27:57,906 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 50.0) internal successors, (650), 13 states have internal predecessors, (650), 0 states have call successors, (0), 0 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 11:27:57,906 INFO L175 Difference]: Start difference. First operand has 67 places, 23 transitions, 201 flow. Second operand 12 states and 182 transitions. [2023-11-17 11:27:57,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 37 transitions, 336 flow [2023-11-17 11:27:57,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 37 transitions, 272 flow, removed 7 selfloop flow, removed 17 redundant places. [2023-11-17 11:27:57,908 INFO L231 Difference]: Finished difference. Result has 59 places, 17 transitions, 116 flow [2023-11-17 11:27:57,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=116, PETRI_PLACES=59, PETRI_TRANSITIONS=17} [2023-11-17 11:27:57,908 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 33 predicate places. [2023-11-17 11:27:57,908 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 17 transitions, 116 flow [2023-11-17 11:27:57,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 10 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:27:57,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:57,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:57,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 11:27:57,910 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-17 11:27:57,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:57,910 INFO L85 PathProgramCache]: Analyzing trace with hash 757958700, now seen corresponding path program 4 times [2023-11-17 11:27:57,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:57,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780091336] [2023-11-17 11:27:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:57,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:59,257 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 11:27:59,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:59,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780091336] [2023-11-17 11:27:59,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780091336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:59,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:59,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-17 11:27:59,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727465719] [2023-11-17 11:27:59,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:59,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 11:27:59,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:59,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 11:27:59,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-17 11:27:59,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 50 [2023-11-17 11:27:59,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 17 transitions, 116 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 11:27:59,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:59,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 50 [2023-11-17 11:27:59,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:59,423 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2023-11-17 11:27:59,423 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-17 11:27:59,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 30 events. 7/30 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 2/32 useless extension candidates. Maximal degree in co-relation 127. Up to 12 conditions per place. [2023-11-17 11:27:59,424 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-11-17 11:27:59,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 19 transitions, 153 flow [2023-11-17 11:27:59,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 11:27:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 11:27:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2023-11-17 11:27:59,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28444444444444444 [2023-11-17 11:27:59,425 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 128 transitions. [2023-11-17 11:27:59,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 128 transitions. [2023-11-17 11:27:59,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:59,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 128 transitions. [2023-11-17 11:27:59,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 9 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 11:27:59,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:27:59,427 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 50.0) internal successors, (500), 10 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 11:27:59,427 INFO L175 Difference]: Start difference. First operand has 59 places, 17 transitions, 116 flow. Second operand 9 states and 128 transitions. [2023-11-17 11:27:59,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 19 transitions, 153 flow [2023-11-17 11:27:59,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 19 transitions, 112 flow, removed 5 selfloop flow, removed 17 redundant places. [2023-11-17 11:27:59,428 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-11-17 11:27:59,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-11-17 11:27:59,428 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-11-17 11:27:59,429 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-11-17 11:27:59,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 0 states have call successors, (0), 0 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 11:27:59,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 11:27:59,431 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-17 11:27:59,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 11:27:59,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-17 11:27:59,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-17 11:27:59,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 11:27:59,432 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 2, 2, 1, 1, 1, 1, 1] [2023-11-17 11:27:59,436 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:27:59,437 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:27:59,439 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:27:59 BasicIcfg [2023-11-17 11:27:59,439 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:27:59,440 INFO L158 Benchmark]: Toolchain (without parser) took 23093.61ms. Allocated memory was 178.3MB in the beginning and 771.8MB in the end (delta: 593.5MB). Free memory was 130.1MB in the beginning and 460.8MB in the end (delta: -330.6MB). Peak memory consumption was 263.9MB. Max. memory is 8.0GB. [2023-11-17 11:27:59,440 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 133.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:27:59,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 527.17ms. Allocated memory is still 178.3MB. Free memory was 130.1MB in the beginning and 104.5MB in the end (delta: 25.6MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-11-17 11:27:59,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.40ms. Allocated memory is still 178.3MB. Free memory was 104.5MB in the beginning and 101.5MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:27:59,441 INFO L158 Benchmark]: Boogie Preprocessor took 33.76ms. Allocated memory is still 178.3MB. Free memory was 101.5MB in the beginning and 99.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:27:59,441 INFO L158 Benchmark]: RCFGBuilder took 994.80ms. Allocated memory was 178.3MB in the beginning and 255.9MB in the end (delta: 77.6MB). Free memory was 99.4MB in the beginning and 176.3MB in the end (delta: -76.9MB). Peak memory consumption was 16.2MB. Max. memory is 8.0GB. [2023-11-17 11:27:59,441 INFO L158 Benchmark]: TraceAbstraction took 21473.94ms. Allocated memory was 255.9MB in the beginning and 771.8MB in the end (delta: 515.9MB). Free memory was 175.7MB in the beginning and 460.8MB in the end (delta: -285.0MB). Peak memory consumption was 231.9MB. Max. memory is 8.0GB. [2023-11-17 11:27:59,443 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 178.3MB. Free memory is still 133.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 527.17ms. Allocated memory is still 178.3MB. Free memory was 130.1MB in the beginning and 104.5MB in the end (delta: 25.6MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 56.40ms. Allocated memory is still 178.3MB. Free memory was 104.5MB in the beginning and 101.5MB in the end (delta: 3.0MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.76ms. Allocated memory is still 178.3MB. Free memory was 101.5MB in the beginning and 99.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 994.80ms. Allocated memory was 178.3MB in the beginning and 255.9MB in the end (delta: 77.6MB). Free memory was 99.4MB in the beginning and 176.3MB in the end (delta: -76.9MB). Peak memory consumption was 16.2MB. Max. memory is 8.0GB. * TraceAbstraction took 21473.94ms. Allocated memory was 255.9MB in the beginning and 771.8MB in the end (delta: 515.9MB). Free memory was 175.7MB in the beginning and 460.8MB in the end (delta: -285.0MB). Peak memory consumption was 231.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 37 PlacesBefore, 26 PlacesAfterwards, 31 TransitionsBefore, 19 TransitionsAfterwards, 506 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 17 TotalNumberOfCompositions, 1445 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 490, independent: 406, independent conditional: 0, independent unconditional: 406, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 321, independent: 281, independent conditional: 0, independent unconditional: 281, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 321, independent: 276, independent conditional: 0, independent unconditional: 276, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 658, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 642, dependent conditional: 0, dependent unconditional: 642, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 490, independent: 125, independent conditional: 0, independent unconditional: 125, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 321, unknown conditional: 0, unknown unconditional: 321] , Statistics on independence cache: Total cache size (in pairs): 53, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 5 procedures, 53 locations, 5 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: 21.4s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 339 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 339 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 198 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1781 IncrementalHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 198 mSolverCounterUnsat, 0 mSDtfsCounter, 1781 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=458occurred in iteration=9, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 239 NumberOfCodeBlocks, 239 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 3958 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:27:59,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...