/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:34:45,410 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:34:45,495 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 12:34:45,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:34:45,515 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:34:45,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:34:45,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:34:45,516 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:34:45,517 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:34:45,520 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:34:45,520 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:34:45,520 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:34:45,520 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:34:45,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:34:45,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:34:45,521 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:34:45,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:34:45,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:34:45,521 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:34:45,521 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:34:45,521 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:34:45,523 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:34:45,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:34:45,523 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:34:45,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:34:45,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:34:45,524 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:34:45,525 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:34:45,525 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:34:45,525 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:34:45,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:34:45,526 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:34:45,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:34:45,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:34:45,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:34:45,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:34:45,754 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:34:45,755 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:34:45,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-11-17 12:34:46,796 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:34:46,942 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:34:46,957 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-11-17 12:34:46,963 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e269641c0/624b60b096404964b084a50f4af21a01/FLAG787102d20 [2023-11-17 12:34:46,980 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e269641c0/624b60b096404964b084a50f4af21a01 [2023-11-17 12:34:46,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:34:46,983 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:34:46,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:34:46,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:34:46,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:34:46,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:34:46" (1/1) ... [2023-11-17 12:34:46,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69cab28a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:46, skipping insertion in model container [2023-11-17 12:34:46,990 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:34:46" (1/1) ... [2023-11-17 12:34:47,010 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:34:47,160 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c[2996,3009] [2023-11-17 12:34:47,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:34:47,174 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:34:47,208 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c[2996,3009] [2023-11-17 12:34:47,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:34:47,213 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:34:47,213 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:34:47,219 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:34:47,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47 WrapperNode [2023-11-17 12:34:47,219 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:34:47,220 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:34:47,220 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:34:47,220 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:34:47,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,238 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,258 INFO L138 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-11-17 12:34:47,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:34:47,259 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:34:47,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:34:47,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:34:47,265 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,277 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,280 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,280 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,281 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,283 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:34:47,283 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:34:47,283 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:34:47,283 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:34:47,284 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (1/1) ... [2023-11-17 12:34:47,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:34:47,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:34:47,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 12:34:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:34:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:34:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:34:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:34:47,359 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:34:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:34:47,360 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:34:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:34:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:34:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:34:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:34:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:34:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:34:47,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:34:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:34:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:34:47,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:34:47,362 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:34:47,454 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:34:47,456 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:34:47,680 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:34:47,831 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:34:47,831 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 12:34:47,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:34:47 BoogieIcfgContainer [2023-11-17 12:34:47,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:34:47,835 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:34:47,835 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:34:47,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:34:47,837 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:34:46" (1/3) ... [2023-11-17 12:34:47,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8665fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:34:47, skipping insertion in model container [2023-11-17 12:34:47,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:34:47" (2/3) ... [2023-11-17 12:34:47,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8665fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:34:47, skipping insertion in model container [2023-11-17 12:34:47,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:34:47" (3/3) ... [2023-11-17 12:34:47,839 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2023-11-17 12:34:47,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:34:47,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:34:47,851 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:34:47,891 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 12:34:47,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 37 transitions, 95 flow [2023-11-17 12:34:47,948 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2023-11-17 12:34:47,949 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:34:47,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 3/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-11-17 12:34:47,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 37 transitions, 95 flow [2023-11-17 12:34:47,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 33 transitions, 84 flow [2023-11-17 12:34:47,957 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:34:47,969 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 33 transitions, 84 flow [2023-11-17 12:34:47,972 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 33 transitions, 84 flow [2023-11-17 12:34:47,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 84 flow [2023-11-17 12:34:48,018 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2023-11-17 12:34:48,018 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:34:48,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 3/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-11-17 12:34:48,019 INFO L119 LiptonReduction]: Number of co-enabled transitions 430 [2023-11-17 12:34:48,406 INFO L134 LiptonReduction]: Checked pairs total: 475 [2023-11-17 12:34:48,406 INFO L136 LiptonReduction]: Total number of compositions: 8 [2023-11-17 12:34:48,416 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:34:48,420 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;@2fd34b6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:34:48,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 12:34:48,425 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:34:48,425 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2023-11-17 12:34:48,425 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:34:48,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:34:48,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:34:48,426 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:34:48,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:34:48,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1472410032, now seen corresponding path program 1 times [2023-11-17 12:34:48,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:34:48,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464475125] [2023-11-17 12:34:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:34:48,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:34:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:34:48,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:48,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:34:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464475125] [2023-11-17 12:34:48,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464475125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:34:48,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:34:48,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:34:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890680579] [2023-11-17 12:34:48,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:34:48,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:34:48,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:34:48,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:34:48,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:34:48,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2023-11-17 12:34:48,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:48,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:34:48,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2023-11-17 12:34:48,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:34:49,143 INFO L124 PetriNetUnfolderBase]: 747/1082 cut-off events. [2023-11-17 12:34:49,144 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-17 12:34:49,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2226 conditions, 1082 events. 747/1082 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4231 event pairs, 27 based on Foata normal form. 0/842 useless extension candidates. Maximal degree in co-relation 2114. Up to 693 conditions per place. [2023-11-17 12:34:49,151 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 58 selfloop transitions, 6 changer transitions 0/65 dead transitions. [2023-11-17 12:34:49,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 65 transitions, 294 flow [2023-11-17 12:34:49,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:34:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:34:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 131 transitions. [2023-11-17 12:34:49,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5822222222222222 [2023-11-17 12:34:49,160 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 131 transitions. [2023-11-17 12:34:49,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 131 transitions. [2023-11-17 12:34:49,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:34:49,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 131 transitions. [2023-11-17 12:34:49,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,166 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,167 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 68 flow. Second operand 5 states and 131 transitions. [2023-11-17 12:34:49,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 65 transitions, 294 flow [2023-11-17 12:34:49,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 65 transitions, 270 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 12:34:49,173 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 101 flow [2023-11-17 12:34:49,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2023-11-17 12:34:49,176 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-11-17 12:34:49,177 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 101 flow [2023-11-17 12:34:49,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:34:49,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:34:49,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:34:49,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:34:49,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:34:49,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1701824835, now seen corresponding path program 1 times [2023-11-17 12:34:49,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:34:49,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271924327] [2023-11-17 12:34:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:34:49,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:34:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:34:49,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:34:49,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:34:49,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271924327] [2023-11-17 12:34:49,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271924327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:34:49,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:34:49,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:34:49,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822237403] [2023-11-17 12:34:49,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:34:49,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:34:49,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:34:49,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:34:49,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:34:49,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2023-11-17 12:34:49,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:34:49,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2023-11-17 12:34:49,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:34:49,519 INFO L124 PetriNetUnfolderBase]: 915/1316 cut-off events. [2023-11-17 12:34:49,519 INFO L125 PetriNetUnfolderBase]: For 676/676 co-relation queries the response was YES. [2023-11-17 12:34:49,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3472 conditions, 1316 events. 915/1316 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4925 event pairs, 145 based on Foata normal form. 54/1276 useless extension candidates. Maximal degree in co-relation 1502. Up to 1013 conditions per place. [2023-11-17 12:34:49,525 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 55 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2023-11-17 12:34:49,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 62 transitions, 342 flow [2023-11-17 12:34:49,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:34:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:34:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2023-11-17 12:34:49,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2023-11-17 12:34:49,527 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2023-11-17 12:34:49,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2023-11-17 12:34:49,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:34:49,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2023-11-17 12:34:49,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,529 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,529 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 101 flow. Second operand 4 states and 88 transitions. [2023-11-17 12:34:49,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 62 transitions, 342 flow [2023-11-17 12:34:49,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 62 transitions, 336 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:34:49,531 INFO L231 Difference]: Finished difference. Result has 37 places, 36 transitions, 154 flow [2023-11-17 12:34:49,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=37, PETRI_TRANSITIONS=36} [2023-11-17 12:34:49,532 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 5 predicate places. [2023-11-17 12:34:49,532 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 36 transitions, 154 flow [2023-11-17 12:34:49,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:34:49,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:34:49,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:34:49,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:34:49,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:34:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash 2105374671, now seen corresponding path program 1 times [2023-11-17 12:34:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:34:49,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483999327] [2023-11-17 12:34:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:34:49,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:34:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:34:49,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:34:49,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:34:49,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483999327] [2023-11-17 12:34:49,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483999327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:34:49,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:34:49,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:34:49,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136814898] [2023-11-17 12:34:49,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:34:49,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:34:49,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:34:49,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:34:49,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:34:49,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2023-11-17 12:34:49,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:34:49,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2023-11-17 12:34:49,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:34:49,859 INFO L124 PetriNetUnfolderBase]: 1109/1592 cut-off events. [2023-11-17 12:34:49,859 INFO L125 PetriNetUnfolderBase]: For 1599/1599 co-relation queries the response was YES. [2023-11-17 12:34:49,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 1592 events. 1109/1592 cut-off events. For 1599/1599 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5976 event pairs, 147 based on Foata normal form. 72/1664 useless extension candidates. Maximal degree in co-relation 2255. Up to 741 conditions per place. [2023-11-17 12:34:49,866 INFO L140 encePairwiseOnDemand]: 41/45 looper letters, 72 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-11-17 12:34:49,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 75 transitions, 479 flow [2023-11-17 12:34:49,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:34:49,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:34:49,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2023-11-17 12:34:49,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-17 12:34:49,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 90 transitions. [2023-11-17 12:34:49,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 90 transitions. [2023-11-17 12:34:49,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:34:49,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 90 transitions. [2023-11-17 12:34:49,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,872 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,872 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 154 flow. Second operand 4 states and 90 transitions. [2023-11-17 12:34:49,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 75 transitions, 479 flow [2023-11-17 12:34:49,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 75 transitions, 479 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 12:34:49,876 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 168 flow [2023-11-17 12:34:49,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-17 12:34:49,878 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 9 predicate places. [2023-11-17 12:34:49,878 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 168 flow [2023-11-17 12:34:49,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:49,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:34:49,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:34:49,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 12:34:49,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:34:49,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:34:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1616447866, now seen corresponding path program 1 times [2023-11-17 12:34:49,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:34:49,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545219432] [2023-11-17 12:34:49,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:34:49,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:34:49,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:34:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:34:50,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:34:50,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545219432] [2023-11-17 12:34:50,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545219432] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:34:50,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643850353] [2023-11-17 12:34:50,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:34:50,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:34:50,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:34:50,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:34:50,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 12:34:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:34:50,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 12:34:50,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:34:50,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:34:50,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:34:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:34:50,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643850353] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:34:50,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:34:50,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 5] total 9 [2023-11-17 12:34:50,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207564169] [2023-11-17 12:34:50,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:34:50,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:34:50,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:34:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:34:50,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:34:50,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2023-11-17 12:34:50,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 168 flow. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:50,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:34:50,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2023-11-17 12:34:50,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:34:50,579 INFO L124 PetriNetUnfolderBase]: 1672/2417 cut-off events. [2023-11-17 12:34:50,579 INFO L125 PetriNetUnfolderBase]: For 2529/2529 co-relation queries the response was YES. [2023-11-17 12:34:50,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7440 conditions, 2417 events. 1672/2417 cut-off events. For 2529/2529 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10144 event pairs, 163 based on Foata normal form. 64/2481 useless extension candidates. Maximal degree in co-relation 5743. Up to 1026 conditions per place. [2023-11-17 12:34:50,590 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 82 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2023-11-17 12:34:50,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 102 transitions, 623 flow [2023-11-17 12:34:50,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:34:50,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:34:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2023-11-17 12:34:50,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2023-11-17 12:34:50,591 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 150 transitions. [2023-11-17 12:34:50,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 150 transitions. [2023-11-17 12:34:50,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:34:50,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 150 transitions. [2023-11-17 12:34:50,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 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 12:34:50,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:50,593 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:50,593 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 168 flow. Second operand 7 states and 150 transitions. [2023-11-17 12:34:50,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 102 transitions, 623 flow [2023-11-17 12:34:50,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 102 transitions, 611 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:34:50,597 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 309 flow [2023-11-17 12:34:50,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-11-17 12:34:50,598 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2023-11-17 12:34:50,598 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 309 flow [2023-11-17 12:34:50,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 10 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:50,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:34:50,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:34:50,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 12:34:50,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:34:50,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:34:50,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:34:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash -329639194, now seen corresponding path program 2 times [2023-11-17 12:34:50,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:34:50,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974763964] [2023-11-17 12:34:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:34:50,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:34:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:34:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:51,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:34:51,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974763964] [2023-11-17 12:34:51,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974763964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:34:51,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:34:51,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:34:51,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142900442] [2023-11-17 12:34:51,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:34:51,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:34:51,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:34:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:34:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:34:51,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2023-11-17 12:34:51,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 309 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:51,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:34:51,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2023-11-17 12:34:51,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:34:51,331 INFO L124 PetriNetUnfolderBase]: 2273/3274 cut-off events. [2023-11-17 12:34:51,331 INFO L125 PetriNetUnfolderBase]: For 6663/6663 co-relation queries the response was YES. [2023-11-17 12:34:51,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11827 conditions, 3274 events. 2273/3274 cut-off events. For 6663/6663 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 14539 event pairs, 481 based on Foata normal form. 100/3374 useless extension candidates. Maximal degree in co-relation 6737. Up to 2362 conditions per place. [2023-11-17 12:34:51,351 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 84 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2023-11-17 12:34:51,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 94 transitions, 748 flow [2023-11-17 12:34:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:34:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:34:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2023-11-17 12:34:51,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622222222222222 [2023-11-17 12:34:51,353 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2023-11-17 12:34:51,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2023-11-17 12:34:51,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:34:51,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2023-11-17 12:34:51,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:51,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:51,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 45.0) internal successors, (270), 6 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:51,354 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 309 flow. Second operand 5 states and 104 transitions. [2023-11-17 12:34:51,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 94 transitions, 748 flow [2023-11-17 12:34:51,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 94 transitions, 734 flow, removed 7 selfloop flow, removed 0 redundant places. [2023-11-17 12:34:51,363 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 333 flow [2023-11-17 12:34:51,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=333, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2023-11-17 12:34:51,366 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 21 predicate places. [2023-11-17 12:34:51,366 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 333 flow [2023-11-17 12:34:51,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:51,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:34:51,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:34:51,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:34:51,366 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:34:51,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:34:51,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1417118800, now seen corresponding path program 3 times [2023-11-17 12:34:51,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:34:51,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710630671] [2023-11-17 12:34:51,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:34:51,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:34:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:34:51,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:51,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:34:51,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710630671] [2023-11-17 12:34:51,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710630671] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:34:51,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:34:51,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 12:34:51,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945000484] [2023-11-17 12:34:51,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:34:51,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:34:51,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:34:51,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:34:51,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:34:51,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2023-11-17 12:34:51,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 333 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 12:34:51,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:34:51,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2023-11-17 12:34:51,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:34:51,907 INFO L124 PetriNetUnfolderBase]: 2186/3139 cut-off events. [2023-11-17 12:34:51,907 INFO L125 PetriNetUnfolderBase]: For 7356/7356 co-relation queries the response was YES. [2023-11-17 12:34:51,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12013 conditions, 3139 events. 2186/3139 cut-off events. For 7356/7356 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 13928 event pairs, 134 based on Foata normal form. 126/3265 useless extension candidates. Maximal degree in co-relation 6889. Up to 1334 conditions per place. [2023-11-17 12:34:51,924 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 117 selfloop transitions, 18 changer transitions 0/135 dead transitions. [2023-11-17 12:34:51,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 135 transitions, 1140 flow [2023-11-17 12:34:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 12:34:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 12:34:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2023-11-17 12:34:51,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2023-11-17 12:34:51,926 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 125 transitions. [2023-11-17 12:34:51,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 125 transitions. [2023-11-17 12:34:51,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:34:51,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 125 transitions. [2023-11-17 12:34:51,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:51,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:51,927 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 45.0) internal successors, (360), 8 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:51,927 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 333 flow. Second operand 7 states and 125 transitions. [2023-11-17 12:34:51,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 135 transitions, 1140 flow [2023-11-17 12:34:51,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 135 transitions, 1118 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 12:34:51,933 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 463 flow [2023-11-17 12:34:51,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=463, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2023-11-17 12:34:51,934 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2023-11-17 12:34:51,934 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 463 flow [2023-11-17 12:34:51,934 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 12:34:51,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:34:51,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:34:51,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:34:51,935 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:34:51,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:34:51,935 INFO L85 PathProgramCache]: Analyzing trace with hash -518349962, now seen corresponding path program 4 times [2023-11-17 12:34:51,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:34:51,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123143202] [2023-11-17 12:34:51,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:34:51,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:34:51,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:34:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:52,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:34:52,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123143202] [2023-11-17 12:34:52,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123143202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:34:52,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687935138] [2023-11-17 12:34:52,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:34:52,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:34:52,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:34:52,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:34:52,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 12:34:52,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:34:52,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:34:52,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 12:34:52,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:34:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:52,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:34:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:52,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687935138] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:34:52,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:34:52,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2023-11-17 12:34:52,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647491700] [2023-11-17 12:34:52,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:34:52,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 12:34:52,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:34:52,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 12:34:52,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-17 12:34:52,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 45 [2023-11-17 12:34:52,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 463 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:52,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:34:52,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 45 [2023-11-17 12:34:52,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:34:53,306 INFO L124 PetriNetUnfolderBase]: 2712/3885 cut-off events. [2023-11-17 12:34:53,306 INFO L125 PetriNetUnfolderBase]: For 14328/14328 co-relation queries the response was YES. [2023-11-17 12:34:53,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17206 conditions, 3885 events. 2712/3885 cut-off events. For 14328/14328 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 17599 event pairs, 108 based on Foata normal form. 152/4037 useless extension candidates. Maximal degree in co-relation 8864. Up to 1109 conditions per place. [2023-11-17 12:34:53,334 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 185 selfloop transitions, 92 changer transitions 0/277 dead transitions. [2023-11-17 12:34:53,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 277 transitions, 2355 flow [2023-11-17 12:34:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 12:34:53,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 12:34:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 355 transitions. [2023-11-17 12:34:53,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3287037037037037 [2023-11-17 12:34:53,336 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 355 transitions. [2023-11-17 12:34:53,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 355 transitions. [2023-11-17 12:34:53,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:34:53,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 355 transitions. [2023-11-17 12:34:53,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 14.791666666666666) internal successors, (355), 24 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:53,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 45.0) internal successors, (1125), 25 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:53,341 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 45.0) internal successors, (1125), 25 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:53,341 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 463 flow. Second operand 24 states and 355 transitions. [2023-11-17 12:34:53,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 277 transitions, 2355 flow [2023-11-17 12:34:53,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 277 transitions, 2342 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 12:34:53,359 INFO L231 Difference]: Finished difference. Result has 95 places, 131 transitions, 1435 flow [2023-11-17 12:34:53,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1435, PETRI_PLACES=95, PETRI_TRANSITIONS=131} [2023-11-17 12:34:53,359 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2023-11-17 12:34:53,359 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 131 transitions, 1435 flow [2023-11-17 12:34:53,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:53,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:34:53,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:34:53,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 12:34:53,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-17 12:34:53,582 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:34:53,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:34:53,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1200370772, now seen corresponding path program 5 times [2023-11-17 12:34:53,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:34:53,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236878243] [2023-11-17 12:34:53,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:34:53,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:34:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:34:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:53,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:34:53,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236878243] [2023-11-17 12:34:53,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236878243] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:34:53,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754082986] [2023-11-17 12:34:53,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:34:53,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:34:53,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:34:53,748 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:34:53,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 12:34:53,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 12:34:53,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:34:53,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 12:34:53,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:34:53,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:53,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:34:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:53,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754082986] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:34:53,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:34:53,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2023-11-17 12:34:53,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843428081] [2023-11-17 12:34:53,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:34:53,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 12:34:53,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:34:53,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 12:34:53,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-17 12:34:53,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2023-11-17 12:34:53,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 131 transitions, 1435 flow. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:53,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:34:53,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2023-11-17 12:34:53,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:34:54,629 INFO L124 PetriNetUnfolderBase]: 3282/4683 cut-off events. [2023-11-17 12:34:54,629 INFO L125 PetriNetUnfolderBase]: For 41539/41539 co-relation queries the response was YES. [2023-11-17 12:34:54,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27588 conditions, 4683 events. 3282/4683 cut-off events. For 41539/41539 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 21974 event pairs, 215 based on Foata normal form. 52/4735 useless extension candidates. Maximal degree in co-relation 26319. Up to 1341 conditions per place. [2023-11-17 12:34:54,663 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 183 selfloop transitions, 91 changer transitions 0/274 dead transitions. [2023-11-17 12:34:54,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 274 transitions, 3364 flow [2023-11-17 12:34:54,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 12:34:54,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 12:34:54,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 248 transitions. [2023-11-17 12:34:54,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3674074074074074 [2023-11-17 12:34:54,665 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 248 transitions. [2023-11-17 12:34:54,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 248 transitions. [2023-11-17 12:34:54,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:34:54,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 248 transitions. [2023-11-17 12:34:54,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 16.533333333333335) internal successors, (248), 15 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:54,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 45.0) internal successors, (720), 16 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:54,667 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 45.0) internal successors, (720), 16 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:54,667 INFO L175 Difference]: Start difference. First operand has 95 places, 131 transitions, 1435 flow. Second operand 15 states and 248 transitions. [2023-11-17 12:34:54,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 274 transitions, 3364 flow [2023-11-17 12:34:54,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 274 transitions, 3164 flow, removed 54 selfloop flow, removed 7 redundant places. [2023-11-17 12:34:54,749 INFO L231 Difference]: Finished difference. Result has 111 places, 174 transitions, 2157 flow [2023-11-17 12:34:54,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=1312, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2157, PETRI_PLACES=111, PETRI_TRANSITIONS=174} [2023-11-17 12:34:54,749 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 79 predicate places. [2023-11-17 12:34:54,749 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 174 transitions, 2157 flow [2023-11-17 12:34:54,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:54,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:34:54,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:34:54,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 12:34:54,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:34:54,955 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:34:54,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:34:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1188975860, now seen corresponding path program 6 times [2023-11-17 12:34:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:34:54,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151085684] [2023-11-17 12:34:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:34:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:34:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:34:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:56,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:34:56,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151085684] [2023-11-17 12:34:56,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151085684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:34:56,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581406236] [2023-11-17 12:34:56,237 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 12:34:56,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:34:56,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:34:56,238 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:34:56,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 12:34:56,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 12:34:56,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:34:56,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 12:34:56,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:34:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:56,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:34:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:34:57,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581406236] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:34:57,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:34:57,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-11-17 12:34:57,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441896369] [2023-11-17 12:34:57,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:34:57,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 12:34:57,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:34:57,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 12:34:57,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2023-11-17 12:34:57,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2023-11-17 12:34:57,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 174 transitions, 2157 flow. Second operand has 22 states, 22 states have (on average 11.136363636363637) internal successors, (245), 22 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:34:57,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:34:57,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2023-11-17 12:34:57,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:35:12,839 INFO L124 PetriNetUnfolderBase]: 15756/22463 cut-off events. [2023-11-17 12:35:12,839 INFO L125 PetriNetUnfolderBase]: For 226396/226396 co-relation queries the response was YES. [2023-11-17 12:35:12,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140254 conditions, 22463 events. 15756/22463 cut-off events. For 226396/226396 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 133387 event pairs, 539 based on Foata normal form. 18/22481 useless extension candidates. Maximal degree in co-relation 133332. Up to 5589 conditions per place. [2023-11-17 12:35:13,115 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 621 selfloop transitions, 790 changer transitions 398/1809 dead transitions. [2023-11-17 12:35:13,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 1809 transitions, 24415 flow [2023-11-17 12:35:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-17 12:35:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-11-17 12:35:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 1599 transitions. [2023-11-17 12:35:13,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663230240549828 [2023-11-17 12:35:13,122 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 1599 transitions. [2023-11-17 12:35:13,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 1599 transitions. [2023-11-17 12:35:13,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:35:13,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 1599 transitions. [2023-11-17 12:35:13,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 16.484536082474225) internal successors, (1599), 97 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:35:13,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 45.0) internal successors, (4410), 98 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:35:13,136 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 45.0) internal successors, (4410), 98 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:35:13,136 INFO L175 Difference]: Start difference. First operand has 111 places, 174 transitions, 2157 flow. Second operand 97 states and 1599 transitions. [2023-11-17 12:35:13,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 1809 transitions, 24415 flow [2023-11-17 12:35:14,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1809 transitions, 24121 flow, removed 76 selfloop flow, removed 4 redundant places. [2023-11-17 12:35:14,330 INFO L231 Difference]: Finished difference. Result has 268 places, 976 transitions, 16137 flow [2023-11-17 12:35:14,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=2106, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=16137, PETRI_PLACES=268, PETRI_TRANSITIONS=976} [2023-11-17 12:35:14,331 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 236 predicate places. [2023-11-17 12:35:14,331 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 976 transitions, 16137 flow [2023-11-17 12:35:14,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.136363636363637) internal successors, (245), 22 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:35:14,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:35:14,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:35:14,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-17 12:35:14,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:35:14,539 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:35:14,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:35:14,539 INFO L85 PathProgramCache]: Analyzing trace with hash -388506482, now seen corresponding path program 7 times [2023-11-17 12:35:14,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:35:14,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156465506] [2023-11-17 12:35:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:35:14,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:35:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:15,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:35:15,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:35:15,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156465506] [2023-11-17 12:35:15,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156465506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:35:15,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67527456] [2023-11-17 12:35:15,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 12:35:15,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:35:15,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:35:15,532 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:35:15,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 12:35:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:15,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 12:35:15,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:35:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:35:16,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:35:17,164 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:35:17,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67527456] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:35:17,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:35:17,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2023-11-17 12:35:17,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129156900] [2023-11-17 12:35:17,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:35:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 12:35:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:35:17,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 12:35:17,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2023-11-17 12:35:17,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2023-11-17 12:35:17,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 976 transitions, 16137 flow. Second operand has 23 states, 23 states have (on average 12.0) internal successors, (276), 23 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:35:17,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:35:17,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2023-11-17 12:35:17,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:35:33,352 INFO L124 PetriNetUnfolderBase]: 25268/36103 cut-off events. [2023-11-17 12:35:33,352 INFO L125 PetriNetUnfolderBase]: For 1136165/1136165 co-relation queries the response was YES. [2023-11-17 12:35:34,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321304 conditions, 36103 events. 25268/36103 cut-off events. For 1136165/1136165 co-relation queries the response was YES. Maximal size of possible extension queue 1823. Compared 231968 event pairs, 651 based on Foata normal form. 30/36133 useless extension candidates. Maximal degree in co-relation 321091. Up to 8923 conditions per place. [2023-11-17 12:35:34,175 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 956 selfloop transitions, 1342 changer transitions 552/2850 dead transitions. [2023-11-17 12:35:34,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 2850 transitions, 55494 flow [2023-11-17 12:35:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-17 12:35:34,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-17 12:35:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 1155 transitions. [2023-11-17 12:35:34,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425287356321839 [2023-11-17 12:35:34,180 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 1155 transitions. [2023-11-17 12:35:34,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 1155 transitions. [2023-11-17 12:35:34,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:35:34,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 1155 transitions. [2023-11-17 12:35:34,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 19.913793103448278) internal successors, (1155), 58 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:35:34,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 45.0) internal successors, (2655), 59 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:35:34,185 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 45.0) internal successors, (2655), 59 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:35:34,185 INFO L175 Difference]: Start difference. First operand has 268 places, 976 transitions, 16137 flow. Second operand 58 states and 1155 transitions. [2023-11-17 12:35:34,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 2850 transitions, 55494 flow [2023-11-17 12:35:52,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 2850 transitions, 50894 flow, removed 2263 selfloop flow, removed 22 redundant places. [2023-11-17 12:35:52,675 INFO L231 Difference]: Finished difference. Result has 324 places, 1788 transitions, 32541 flow [2023-11-17 12:35:52,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=14233, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=976, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=618, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=32541, PETRI_PLACES=324, PETRI_TRANSITIONS=1788} [2023-11-17 12:35:52,676 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2023-11-17 12:35:52,676 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 1788 transitions, 32541 flow [2023-11-17 12:35:52,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.0) internal successors, (276), 23 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:35:52,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:35:52,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:35:52,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 12:35:52,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-17 12:35:52,882 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:35:52,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:35:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1198486442, now seen corresponding path program 1 times [2023-11-17 12:35:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:35:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569382403] [2023-11-17 12:35:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:35:52,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:35:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:35:53,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:35:53,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569382403] [2023-11-17 12:35:53,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569382403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:35:53,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224323791] [2023-11-17 12:35:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:35:53,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:35:53,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:35:53,223 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:35:53,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 12:35:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:35:53,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 12:35:53,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:35:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:35:53,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:35:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:35:53,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224323791] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:35:53,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:35:53,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-17 12:35:53,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228044206] [2023-11-17 12:35:53,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:35:53,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 12:35:53,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:35:53,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 12:35:53,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-17 12:35:53,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2023-11-17 12:35:53,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 1788 transitions, 32541 flow. Second operand has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:35:53,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:35:53,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2023-11-17 12:35:53,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:36:14,642 INFO L124 PetriNetUnfolderBase]: 35087/50498 cut-off events. [2023-11-17 12:36:14,642 INFO L125 PetriNetUnfolderBase]: For 1394646/1394646 co-relation queries the response was YES. [2023-11-17 12:36:16,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449794 conditions, 50498 events. 35087/50498 cut-off events. For 1394646/1394646 co-relation queries the response was YES. Maximal size of possible extension queue 2607. Compared 342995 event pairs, 1129 based on Foata normal form. 274/50772 useless extension candidates. Maximal degree in co-relation 448974. Up to 15175 conditions per place. [2023-11-17 12:36:16,286 INFO L140 encePairwiseOnDemand]: 33/45 looper letters, 2252 selfloop transitions, 2443 changer transitions 0/4695 dead transitions. [2023-11-17 12:36:16,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 4695 transitions, 96344 flow [2023-11-17 12:36:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-17 12:36:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-17 12:36:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 761 transitions. [2023-11-17 12:36:16,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37580246913580245 [2023-11-17 12:36:16,290 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 761 transitions. [2023-11-17 12:36:16,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 761 transitions. [2023-11-17 12:36:16,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:36:16,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 761 transitions. [2023-11-17 12:36:16,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 16.91111111111111) internal successors, (761), 45 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:36:16,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 45.0) internal successors, (2070), 46 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:36:16,295 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 45.0) internal successors, (2070), 46 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:36:16,295 INFO L175 Difference]: Start difference. First operand has 324 places, 1788 transitions, 32541 flow. Second operand 45 states and 761 transitions. [2023-11-17 12:36:16,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 4695 transitions, 96344 flow [2023-11-17 12:36:54,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 4695 transitions, 92889 flow, removed 1545 selfloop flow, removed 35 redundant places. [2023-11-17 12:36:54,861 INFO L231 Difference]: Finished difference. Result has 342 places, 3857 transitions, 79547 flow [2023-11-17 12:36:54,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=31203, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=730, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=803, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=79547, PETRI_PLACES=342, PETRI_TRANSITIONS=3857} [2023-11-17 12:36:54,863 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 310 predicate places. [2023-11-17 12:36:54,863 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 3857 transitions, 79547 flow [2023-11-17 12:36:54,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 11.352941176470589) internal successors, (193), 17 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:36:54,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:36:54,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:36:54,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-17 12:36:55,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:36:55,068 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:36:55,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:36:55,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1284172890, now seen corresponding path program 8 times [2023-11-17 12:36:55,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:36:55,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899309391] [2023-11-17 12:36:55,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:36:55,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:36:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:36:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:36:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:36:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899309391] [2023-11-17 12:36:56,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899309391] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:36:56,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834292770] [2023-11-17 12:36:56,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:36:56,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:36:56,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:36:56,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:36:56,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 12:36:56,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:36:56,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:36:56,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 12:36:56,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:36:57,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:36:57,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:36:57,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:36:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834292770] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:36:57,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:36:57,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2023-11-17 12:36:57,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496667978] [2023-11-17 12:36:57,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:36:57,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 12:36:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:36:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 12:36:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-11-17 12:36:57,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2023-11-17 12:36:57,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 3857 transitions, 79547 flow. Second operand has 22 states, 22 states have (on average 11.136363636363637) internal successors, (245), 22 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:36:57,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:36:57,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2023-11-17 12:36:57,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:37:51,552 INFO L124 PetriNetUnfolderBase]: 47680/69249 cut-off events. [2023-11-17 12:37:51,552 INFO L125 PetriNetUnfolderBase]: For 2274524/2274524 co-relation queries the response was YES. [2023-11-17 12:37:53,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677893 conditions, 69249 events. 47680/69249 cut-off events. For 2274524/2274524 co-relation queries the response was YES. Maximal size of possible extension queue 3525. Compared 497192 event pairs, 2499 based on Foata normal form. 54/69303 useless extension candidates. Maximal degree in co-relation 673053. Up to 19387 conditions per place. [2023-11-17 12:37:54,141 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 1920 selfloop transitions, 3687 changer transitions 478/6085 dead transitions. [2023-11-17 12:37:54,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 6085 transitions, 139097 flow [2023-11-17 12:37:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-17 12:37:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-11-17 12:37:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 893 transitions. [2023-11-17 12:37:54,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968888888888889 [2023-11-17 12:37:54,144 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 893 transitions. [2023-11-17 12:37:54,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 893 transitions. [2023-11-17 12:37:54,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:37:54,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 893 transitions. [2023-11-17 12:37:54,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 17.86) internal successors, (893), 50 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:37:54,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 45.0) internal successors, (2295), 51 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:37:54,165 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 45.0) internal successors, (2295), 51 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:37:54,165 INFO L175 Difference]: Start difference. First operand has 342 places, 3857 transitions, 79547 flow. Second operand 50 states and 893 transitions. [2023-11-17 12:37:54,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 6085 transitions, 139097 flow [2023-11-17 12:40:05,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 6085 transitions, 135742 flow, removed 1665 selfloop flow, removed 3 redundant places. [2023-11-17 12:40:06,093 INFO L231 Difference]: Finished difference. Result has 420 places, 4927 transitions, 114671 flow [2023-11-17 12:40:06,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=77750, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2686, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=933, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=114671, PETRI_PLACES=420, PETRI_TRANSITIONS=4927} [2023-11-17 12:40:06,097 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 388 predicate places. [2023-11-17 12:40:06,097 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 4927 transitions, 114671 flow [2023-11-17 12:40:06,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.136363636363637) internal successors, (245), 22 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:40:06,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:40:06,097 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:40:06,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 12:40:06,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:40:06,302 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 12:40:06,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:40:06,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1601466495, now seen corresponding path program 2 times [2023-11-17 12:40:06,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:40:06,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389000337] [2023-11-17 12:40:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:40:06,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:40:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:40:07,086 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:40:07,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:40:07,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389000337] [2023-11-17 12:40:07,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389000337] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:40:07,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502683920] [2023-11-17 12:40:07,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:40:07,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:40:07,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:40:07,088 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:40:07,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 12:40:07,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:40:07,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:40:07,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-17 12:40:07,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:40:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:40:07,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:40:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:40:08,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502683920] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:40:08,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:40:08,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2023-11-17 12:40:08,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942658335] [2023-11-17 12:40:08,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:40:08,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 12:40:08,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:40:08,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 12:40:08,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2023-11-17 12:40:08,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 45 [2023-11-17 12:40:08,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 4927 transitions, 114671 flow. Second operand has 25 states, 25 states have (on average 11.0) internal successors, (275), 25 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:40:08,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:40:08,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 45 [2023-11-17 12:40:08,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:41:45,072 INFO L124 PetriNetUnfolderBase]: 58860/85567 cut-off events. [2023-11-17 12:41:45,072 INFO L125 PetriNetUnfolderBase]: For 3171222/3171222 co-relation queries the response was YES. [2023-11-17 12:41:48,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897950 conditions, 85567 events. 58860/85567 cut-off events. For 3171222/3171222 co-relation queries the response was YES. Maximal size of possible extension queue 4239. Compared 628594 event pairs, 2549 based on Foata normal form. 50/85617 useless extension candidates. Maximal degree in co-relation 897252. Up to 33423 conditions per place. [2023-11-17 12:41:48,781 INFO L140 encePairwiseOnDemand]: 32/45 looper letters, 3675 selfloop transitions, 4421 changer transitions 449/8545 dead transitions. [2023-11-17 12:41:48,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 8545 transitions, 217266 flow [2023-11-17 12:41:48,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-11-17 12:41:48,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2023-11-17 12:41:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 1593 transitions. [2023-11-17 12:41:48,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3403846153846154 [2023-11-17 12:41:48,809 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 1593 transitions. [2023-11-17 12:41:48,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 1593 transitions. [2023-11-17 12:41:48,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:41:48,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 1593 transitions. [2023-11-17 12:41:48,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 15.317307692307692) internal successors, (1593), 104 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:41:48,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 45.0) internal successors, (4725), 105 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:41:48,816 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 45.0) internal successors, (4725), 105 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:41:48,816 INFO L175 Difference]: Start difference. First operand has 420 places, 4927 transitions, 114671 flow. Second operand 104 states and 1593 transitions. [2023-11-17 12:41:48,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 8545 transitions, 217266 flow Received shutdown request... [2023-11-17 12:43:48,951 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:43:48,951 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:43:49,017 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 12:43:49,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-17 12:43:49,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 12:43:49,223 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 12:43:49,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 12:43:49,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 12:43:49,224 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 12:43:49,225 INFO L445 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1, 1] [2023-11-17 12:43:49,228 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:43:49,228 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:43:49,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:43:49 BasicIcfg [2023-11-17 12:43:49,231 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:43:49,231 INFO L158 Benchmark]: Toolchain (without parser) took 542248.11ms. Allocated memory was 179.3MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 144.8MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 5.0GB. Max. memory is 8.0GB. [2023-11-17 12:43:49,231 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 179.3MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:43:49,232 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.03ms. Allocated memory is still 179.3MB. Free memory was 144.8MB in the beginning and 132.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 12:43:49,232 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.48ms. Allocated memory is still 179.3MB. Free memory was 132.6MB in the beginning and 131.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:43:49,232 INFO L158 Benchmark]: Boogie Preprocessor took 23.47ms. Allocated memory is still 179.3MB. Free memory was 131.1MB in the beginning and 129.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:43:49,233 INFO L158 Benchmark]: RCFGBuilder took 549.43ms. Allocated memory is still 179.3MB. Free memory was 129.5MB in the beginning and 95.5MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-11-17 12:43:49,233 INFO L158 Benchmark]: TraceAbstraction took 541395.57ms. Allocated memory was 179.3MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 94.9MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 4.9GB. Max. memory is 8.0GB. [2023-11-17 12:43:49,234 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 179.3MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.03ms. Allocated memory is still 179.3MB. Free memory was 144.8MB in the beginning and 132.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.48ms. Allocated memory is still 179.3MB. Free memory was 132.6MB in the beginning and 131.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.47ms. Allocated memory is still 179.3MB. Free memory was 131.1MB in the beginning and 129.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 549.43ms. Allocated memory is still 179.3MB. Free memory was 129.5MB in the beginning and 95.5MB in the end (delta: 34.0MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * TraceAbstraction took 541395.57ms. Allocated memory was 179.3MB in the beginning and 6.8GB in the end (delta: 6.6GB). Free memory was 94.9MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 4.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 40 PlacesBefore, 32 PlacesAfterwards, 33 TransitionsBefore, 25 TransitionsAfterwards, 430 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 475 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 367, independent: 356, independent conditional: 0, independent unconditional: 356, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 263, independent: 252, independent conditional: 0, independent unconditional: 252, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 263, independent: 252, independent conditional: 0, independent unconditional: 252, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 11, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 63, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 367, independent: 104, independent conditional: 0, independent unconditional: 104, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 263, unknown conditional: 0, unknown unconditional: 263] , Statistics on independence cache: Total cache size (in pairs): 104, Positive cache size: 98, Positive conditional cache size: 0, Positive unconditional cache size: 98, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 112]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 57 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 541.3s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 525.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2642 SdHoareTripleChecker+Valid, 16.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2642 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 14.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 345 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11206 IncrementalHoareTripleChecker+Invalid, 11551 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 345 mSolverCounterUnsat, 9 mSDtfsCounter, 11206 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 781 GetRequests, 323 SyntacticMatches, 7 SemanticMatches, 451 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10997 ImplicationChecksByTransitivity, 30.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114671occurred in iteration=12, InterpolantAutomatonStates: 321, 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, 0.8s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 636 ConstructedInterpolants, 0 QuantifiedInterpolants, 15629 SizeOfPredicates, 66 NumberOfNonLiveVariables, 1492 ConjunctsInSsa, 126 ConjunctsInUnsatCore, 29 InterpolantComputations, 5 PerfectInterpolantSequences, 13/63 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown