/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:04:57,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:04:57,644 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 16:04:57,681 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:04:57,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:04:57,682 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:04:57,683 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:04:57,683 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:04:57,684 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:04:57,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:04:57,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:04:57,688 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:04:57,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:04:57,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:04:57,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:04:57,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:04:57,690 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:04:57,690 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:04:57,691 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:04:57,691 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:04:57,691 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:04:57,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:04:57,692 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:04:57,692 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:04:57,692 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:04:57,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:04:57,693 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:04:57,693 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:04:57,693 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:04:57,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:04:57,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:04:57,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:04:57,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:04:57,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:04:57,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:04:57,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:04:57,958 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:04:57,958 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:04:57,959 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-11-17 16:04:59,166 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:04:59,317 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:04:59,318 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c [2023-11-17 16:04:59,325 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8364a319e/0e6b725b39124737a90ccacec427caf8/FLAGe415ac9c2 [2023-11-17 16:04:59,340 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8364a319e/0e6b725b39124737a90ccacec427caf8 [2023-11-17 16:04:59,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:04:59,349 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:04:59,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:04:59,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:04:59,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:04:59,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36dfba95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59, skipping insertion in model container [2023-11-17 16:04:59,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:04:59,524 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2895,2908] [2023-11-17 16:04:59,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:04:59,535 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:04:59,554 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3-extended.wvr.c[2895,2908] [2023-11-17 16:04:59,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:04:59,561 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:04:59,562 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:04:59,568 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:04:59,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59 WrapperNode [2023-11-17 16:04:59,568 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:04:59,569 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:04:59,569 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:04:59,569 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:04:59,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,595 INFO L138 Inliner]: procedures = 22, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-11-17 16:04:59,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:04:59,596 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:04:59,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:04:59,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:04:59,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,620 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:04:59,621 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:04:59,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:04:59,621 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:04:59,622 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (1/1) ... [2023-11-17 16:04:59,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:04:59,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:04:59,649 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 16:04:59,651 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 16:04:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:04:59,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:04:59,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:04:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:04:59,675 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:04:59,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:04:59,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:04:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:04:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:04:59,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:04:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:04:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:04:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:04:59,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:04:59,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:04:59,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:04:59,679 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 16:04:59,810 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:04:59,813 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:05:00,038 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:05:00,064 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:05:00,064 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 16:05:00,066 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:05:00 BoogieIcfgContainer [2023-11-17 16:05:00,066 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:05:00,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:05:00,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:05:00,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:05:00,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:04:59" (1/3) ... [2023-11-17 16:05:00,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ee5fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:05:00, skipping insertion in model container [2023-11-17 16:05:00,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:04:59" (2/3) ... [2023-11-17 16:05:00,072 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ee5fee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:05:00, skipping insertion in model container [2023-11-17 16:05:00,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:05:00" (3/3) ... [2023-11-17 16:05:00,073 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2023-11-17 16:05:00,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:05:00,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:05:00,089 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:05:00,181 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 16:05:00,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 131 transitions, 283 flow [2023-11-17 16:05:00,297 INFO L124 PetriNetUnfolderBase]: 16/128 cut-off events. [2023-11-17 16:05:00,297 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:05:00,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 128 events. 16/128 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 169 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2023-11-17 16:05:00,309 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 131 transitions, 283 flow [2023-11-17 16:05:00,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 117 transitions, 252 flow [2023-11-17 16:05:00,322 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:05:00,335 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 117 transitions, 252 flow [2023-11-17 16:05:00,338 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 117 transitions, 252 flow [2023-11-17 16:05:00,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 117 transitions, 252 flow [2023-11-17 16:05:00,368 INFO L124 PetriNetUnfolderBase]: 16/117 cut-off events. [2023-11-17 16:05:00,368 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:05:00,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 117 events. 16/117 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2023-11-17 16:05:00,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 3534 [2023-11-17 16:05:04,165 INFO L134 LiptonReduction]: Checked pairs total: 3244 [2023-11-17 16:05:04,165 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-11-17 16:05:04,179 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:05:04,185 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;@5723bd8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:05:04,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 16:05:04,190 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:05:04,191 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-11-17 16:05:04,191 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 16:05:04,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:04,191 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 16:05:04,192 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 16:05:04,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:04,196 INFO L85 PathProgramCache]: Analyzing trace with hash 351173292, now seen corresponding path program 1 times [2023-11-17 16:05:04,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:04,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83739482] [2023-11-17 16:05:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:04,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:04,516 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 16:05:04,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:04,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83739482] [2023-11-17 16:05:04,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83739482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:04,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:04,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 16:05:04,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080011082] [2023-11-17 16:05:04,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:04,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:05:04,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:04,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:05:04,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:05:04,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 247 [2023-11-17 16:05:04,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:04,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:04,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 247 [2023-11-17 16:05:04,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:04,699 INFO L124 PetriNetUnfolderBase]: 359/506 cut-off events. [2023-11-17 16:05:04,699 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-17 16:05:04,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1064 conditions, 506 events. 359/506 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1614 event pairs, 39 based on Foata normal form. 1/307 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2023-11-17 16:05:04,705 INFO L140 encePairwiseOnDemand]: 242/247 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-11-17 16:05:04,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 179 flow [2023-11-17 16:05:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:05:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:05:04,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-11-17 16:05:04,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020242914979757 [2023-11-17 16:05:04,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-11-17 16:05:04,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-11-17 16:05:04,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:04,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-11-17 16:05:04,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:04,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:04,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:04,734 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 62 flow. Second operand 3 states and 372 transitions. [2023-11-17 16:05:04,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 179 flow [2023-11-17 16:05:04,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 38 transitions, 157 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 16:05:04,740 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 76 flow [2023-11-17 16:05:04,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2023-11-17 16:05:04,745 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2023-11-17 16:05:04,745 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 76 flow [2023-11-17 16:05:04,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:04,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:04,746 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] [2023-11-17 16:05:04,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:05:04,746 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 16:05:04,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:04,747 INFO L85 PathProgramCache]: Analyzing trace with hash 729732734, now seen corresponding path program 1 times [2023-11-17 16:05:04,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:04,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514691511] [2023-11-17 16:05:04,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:04,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:04,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:04,877 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 16:05:04,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:04,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514691511] [2023-11-17 16:05:04,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514691511] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:04,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:04,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:05:04,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830946076] [2023-11-17 16:05:04,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:04,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:05:04,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:04,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:05:04,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:05:04,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 247 [2023-11-17 16:05:04,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:04,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:04,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 247 [2023-11-17 16:05:04,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:04,983 INFO L124 PetriNetUnfolderBase]: 285/411 cut-off events. [2023-11-17 16:05:04,983 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-11-17 16:05:04,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 411 events. 285/411 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1261 event pairs, 44 based on Foata normal form. 40/443 useless extension candidates. Maximal degree in co-relation 353. Up to 287 conditions per place. [2023-11-17 16:05:04,987 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 29 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-11-17 16:05:04,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 168 flow [2023-11-17 16:05:04,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:05:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:05:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-11-17 16:05:04,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979757085020243 [2023-11-17 16:05:04,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-11-17 16:05:04,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-11-17 16:05:04,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:04,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-11-17 16:05:04,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:04,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:04,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:04,994 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 76 flow. Second operand 3 states and 369 transitions. [2023-11-17 16:05:04,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 168 flow [2023-11-17 16:05:04,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 35 transitions, 162 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:05:04,996 INFO L231 Difference]: Finished difference. Result has 28 places, 26 transitions, 87 flow [2023-11-17 16:05:04,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=28, PETRI_TRANSITIONS=26} [2023-11-17 16:05:04,997 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-11-17 16:05:04,997 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 26 transitions, 87 flow [2023-11-17 16:05:04,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:04,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:04,998 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] [2023-11-17 16:05:04,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:05:04,998 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 16:05:04,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash 290231299, now seen corresponding path program 1 times [2023-11-17 16:05:04,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:04,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001704715] [2023-11-17 16:05:04,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:04,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:05,089 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 16:05:05,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:05,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001704715] [2023-11-17 16:05:05,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001704715] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:05,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:05,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:05:05,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903006979] [2023-11-17 16:05:05,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:05,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:05:05,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:05,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:05:05,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:05:05,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 247 [2023-11-17 16:05:05,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:05,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:05,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 247 [2023-11-17 16:05:05,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:05,169 INFO L124 PetriNetUnfolderBase]: 244/354 cut-off events. [2023-11-17 16:05:05,169 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2023-11-17 16:05:05,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 354 events. 244/354 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1036 event pairs, 63 based on Foata normal form. 27/375 useless extension candidates. Maximal degree in co-relation 234. Up to 286 conditions per place. [2023-11-17 16:05:05,174 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 31 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-11-17 16:05:05,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 194 flow [2023-11-17 16:05:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:05:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:05:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-11-17 16:05:05,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979757085020243 [2023-11-17 16:05:05,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-11-17 16:05:05,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-11-17 16:05:05,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:05,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-11-17 16:05:05,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:05,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:05,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:05,180 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 87 flow. Second operand 3 states and 369 transitions. [2023-11-17 16:05:05,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 194 flow [2023-11-17 16:05:05,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 37 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:05:05,183 INFO L231 Difference]: Finished difference. Result has 30 places, 27 transitions, 101 flow [2023-11-17 16:05:05,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=30, PETRI_TRANSITIONS=27} [2023-11-17 16:05:05,184 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2023-11-17 16:05:05,184 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 27 transitions, 101 flow [2023-11-17 16:05:05,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:05,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:05,185 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 16:05:05,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:05:05,186 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 16:05:05,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:05,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1419237293, now seen corresponding path program 1 times [2023-11-17 16:05:05,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:05,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25540938] [2023-11-17 16:05:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:05,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 16:05:05,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:05,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25540938] [2023-11-17 16:05:05,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25540938] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:05,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:05,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:05:05,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349964122] [2023-11-17 16:05:05,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:05,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:05:05,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:05,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:05:05,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:05:05,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 247 [2023-11-17 16:05:05,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 27 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:05,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:05,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 247 [2023-11-17 16:05:05,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:05,381 INFO L124 PetriNetUnfolderBase]: 220/334 cut-off events. [2023-11-17 16:05:05,381 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-11-17 16:05:05,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 334 events. 220/334 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 990 event pairs, 40 based on Foata normal form. 17/341 useless extension candidates. Maximal degree in co-relation 717. Up to 199 conditions per place. [2023-11-17 16:05:05,384 INFO L140 encePairwiseOnDemand]: 244/247 looper letters, 33 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-11-17 16:05:05,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 222 flow [2023-11-17 16:05:05,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:05:05,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:05:05,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-11-17 16:05:05,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979757085020243 [2023-11-17 16:05:05,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-11-17 16:05:05,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-11-17 16:05:05,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:05,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-11-17 16:05:05,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:05,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:05,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 247.0) internal successors, (988), 4 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:05,389 INFO L175 Difference]: Start difference. First operand has 30 places, 27 transitions, 101 flow. Second operand 3 states and 369 transitions. [2023-11-17 16:05:05,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 222 flow [2023-11-17 16:05:05,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:05:05,391 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 115 flow [2023-11-17 16:05:05,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-11-17 16:05:05,392 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-11-17 16:05:05,392 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 115 flow [2023-11-17 16:05:05,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:05,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:05,393 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] [2023-11-17 16:05:05,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:05:05,393 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 16:05:05,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:05,394 INFO L85 PathProgramCache]: Analyzing trace with hash -897449352, now seen corresponding path program 1 times [2023-11-17 16:05:05,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:05,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452204478] [2023-11-17 16:05:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:05,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:05:05,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452204478] [2023-11-17 16:05:05,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452204478] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:05,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827394721] [2023-11-17 16:05:05,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:05,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:05,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:05,653 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 16:05:05,680 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 16:05:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:05,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:05:05,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:06,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:05:06,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:05:06,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827394721] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:06,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2023-11-17 16:05:06,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829487393] [2023-11-17 16:05:06,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:06,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 16:05:06,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:06,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 16:05:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-17 16:05:06,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 247 [2023-11-17 16:05:06,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 115 flow. Second operand has 10 states, 10 states have (on average 94.3) internal successors, (943), 10 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:06,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:06,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 247 [2023-11-17 16:05:06,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:06,779 INFO L124 PetriNetUnfolderBase]: 445/653 cut-off events. [2023-11-17 16:05:06,780 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2023-11-17 16:05:06,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 653 events. 445/653 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2119 event pairs, 0 based on Foata normal form. 98/750 useless extension candidates. Maximal degree in co-relation 625. Up to 361 conditions per place. [2023-11-17 16:05:06,786 INFO L140 encePairwiseOnDemand]: 240/247 looper letters, 132 selfloop transitions, 45 changer transitions 0/180 dead transitions. [2023-11-17 16:05:06,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 180 transitions, 1065 flow [2023-11-17 16:05:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 16:05:06,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 16:05:06,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2139 transitions. [2023-11-17 16:05:06,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39363268310636734 [2023-11-17 16:05:06,793 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2139 transitions. [2023-11-17 16:05:06,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2139 transitions. [2023-11-17 16:05:06,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:06,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2139 transitions. [2023-11-17 16:05:06,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 97.22727272727273) internal successors, (2139), 22 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:06,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 247.0) internal successors, (5681), 23 states have internal predecessors, (5681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:06,810 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 247.0) internal successors, (5681), 23 states have internal predecessors, (5681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:06,810 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 115 flow. Second operand 22 states and 2139 transitions. [2023-11-17 16:05:06,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 180 transitions, 1065 flow [2023-11-17 16:05:06,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 180 transitions, 1058 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:05:06,818 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 530 flow [2023-11-17 16:05:06,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=530, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2023-11-17 16:05:06,820 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2023-11-17 16:05:06,820 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 530 flow [2023-11-17 16:05:06,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 94.3) internal successors, (943), 10 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:06,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:06,821 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] [2023-11-17 16:05:06,832 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 16:05:07,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:07,032 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 16:05:07,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:07,033 INFO L85 PathProgramCache]: Analyzing trace with hash -983438438, now seen corresponding path program 2 times [2023-11-17 16:05:07,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:07,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866002802] [2023-11-17 16:05:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:07,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:07,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 16:05:07,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:07,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866002802] [2023-11-17 16:05:07,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866002802] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:07,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128720397] [2023-11-17 16:05:07,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:05:07,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:07,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:07,327 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 16:05:07,333 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 16:05:07,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:05:07,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:07,424 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:05:07,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 16:05:07,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:07,687 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 16:05:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128720397] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:07,687 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:07,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-17 16:05:07,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762740047] [2023-11-17 16:05:07,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:07,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:05:07,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:07,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:05:07,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:05:07,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 247 [2023-11-17 16:05:07,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 530 flow. Second operand has 8 states, 8 states have (on average 103.625) internal successors, (829), 8 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:07,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:07,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 247 [2023-11-17 16:05:07,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:07,866 INFO L124 PetriNetUnfolderBase]: 543/794 cut-off events. [2023-11-17 16:05:07,866 INFO L125 PetriNetUnfolderBase]: For 6450/6457 co-relation queries the response was YES. [2023-11-17 16:05:07,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4269 conditions, 794 events. 543/794 cut-off events. For 6450/6457 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2777 event pairs, 29 based on Foata normal form. 42/834 useless extension candidates. Maximal degree in co-relation 3711. Up to 457 conditions per place. [2023-11-17 16:05:07,874 INFO L140 encePairwiseOnDemand]: 243/247 looper letters, 129 selfloop transitions, 20 changer transitions 0/152 dead transitions. [2023-11-17 16:05:07,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 152 transitions, 1564 flow [2023-11-17 16:05:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:05:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:05:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 753 transitions. [2023-11-17 16:05:07,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43551185656448815 [2023-11-17 16:05:07,877 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 753 transitions. [2023-11-17 16:05:07,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 753 transitions. [2023-11-17 16:05:07,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:07,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 753 transitions. [2023-11-17 16:05:07,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:07,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:07,882 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 247.0) internal successors, (1976), 8 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:07,882 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 530 flow. Second operand 7 states and 753 transitions. [2023-11-17 16:05:07,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 152 transitions, 1564 flow [2023-11-17 16:05:07,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 152 transitions, 1279 flow, removed 118 selfloop flow, removed 4 redundant places. [2023-11-17 16:05:07,901 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 485 flow [2023-11-17 16:05:07,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=485, PETRI_PLACES=67, PETRI_TRANSITIONS=73} [2023-11-17 16:05:07,902 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2023-11-17 16:05:07,902 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 485 flow [2023-11-17 16:05:07,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 103.625) internal successors, (829), 8 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:07,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:07,903 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:07,915 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 16:05:08,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-17 16:05:08,110 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 16:05:08,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1965006478, now seen corresponding path program 3 times [2023-11-17 16:05:08,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:08,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390038087] [2023-11-17 16:05:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:08,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:09,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:09,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390038087] [2023-11-17 16:05:09,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390038087] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025540101] [2023-11-17 16:05:09,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:05:09,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:09,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:09,435 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 16:05:09,452 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 16:05:09,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:05:09,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:09,537 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 16:05:09,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:09,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:10,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:10,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025540101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:10,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:10,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-17 16:05:10,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276186075] [2023-11-17 16:05:10,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:10,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:05:10,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:05:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=539, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:05:10,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 247 [2023-11-17 16:05:10,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 485 flow. Second operand has 27 states, 27 states have (on average 77.96296296296296) internal successors, (2105), 27 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:10,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:10,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 247 [2023-11-17 16:05:10,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:17,473 INFO L124 PetriNetUnfolderBase]: 4143/5963 cut-off events. [2023-11-17 16:05:17,473 INFO L125 PetriNetUnfolderBase]: For 43970/43970 co-relation queries the response was YES. [2023-11-17 16:05:17,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30861 conditions, 5963 events. 4143/5963 cut-off events. For 43970/43970 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 29149 event pairs, 4 based on Foata normal form. 214/6176 useless extension candidates. Maximal degree in co-relation 22077. Up to 3035 conditions per place. [2023-11-17 16:05:17,531 INFO L140 encePairwiseOnDemand]: 239/247 looper letters, 404 selfloop transitions, 675 changer transitions 61/1143 dead transitions. [2023-11-17 16:05:17,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 1143 transitions, 10531 flow [2023-11-17 16:05:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-11-17 16:05:17,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2023-11-17 16:05:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 7913 transitions. [2023-11-17 16:05:17,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34081316220174 [2023-11-17 16:05:17,612 INFO L72 ComplementDD]: Start complementDD. Operand 94 states and 7913 transitions. [2023-11-17 16:05:17,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 7913 transitions. [2023-11-17 16:05:17,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:17,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 94 states and 7913 transitions. [2023-11-17 16:05:17,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 95 states, 94 states have (on average 84.18085106382979) internal successors, (7913), 94 states have internal predecessors, (7913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:17,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 95 states, 95 states have (on average 247.0) internal successors, (23465), 95 states have internal predecessors, (23465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:17,688 INFO L81 ComplementDD]: Finished complementDD. Result has 95 states, 95 states have (on average 247.0) internal successors, (23465), 95 states have internal predecessors, (23465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:17,689 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 485 flow. Second operand 94 states and 7913 transitions. [2023-11-17 16:05:17,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 1143 transitions, 10531 flow [2023-11-17 16:05:17,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 1143 transitions, 9907 flow, removed 284 selfloop flow, removed 4 redundant places. [2023-11-17 16:05:17,862 INFO L231 Difference]: Finished difference. Result has 189 places, 755 transitions, 8206 flow [2023-11-17 16:05:17,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=94, PETRI_FLOW=8206, PETRI_PLACES=189, PETRI_TRANSITIONS=755} [2023-11-17 16:05:17,864 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2023-11-17 16:05:17,864 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 755 transitions, 8206 flow [2023-11-17 16:05:17,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 77.96296296296296) internal successors, (2105), 27 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:17,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:17,865 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:17,873 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 16:05:18,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:18,074 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 16:05:18,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash -395186464, now seen corresponding path program 4 times [2023-11-17 16:05:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337043330] [2023-11-17 16:05:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:19,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:19,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337043330] [2023-11-17 16:05:19,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337043330] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940198720] [2023-11-17 16:05:19,172 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:05:19,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:19,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:19,173 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 16:05:19,194 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 16:05:19,271 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:05:19,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:19,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:05:19,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:19,577 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:20,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940198720] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:20,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:20,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2023-11-17 16:05:20,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113005652] [2023-11-17 16:05:20,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:20,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 16:05:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:20,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 16:05:20,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:05:20,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 247 [2023-11-17 16:05:20,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 755 transitions, 8206 flow. Second operand has 25 states, 25 states have (on average 78.48) internal successors, (1962), 25 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:20,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:20,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 247 [2023-11-17 16:05:20,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:26,175 INFO L124 PetriNetUnfolderBase]: 10534/15635 cut-off events. [2023-11-17 16:05:26,175 INFO L125 PetriNetUnfolderBase]: For 696321/696321 co-relation queries the response was YES. [2023-11-17 16:05:26,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120218 conditions, 15635 events. 10534/15635 cut-off events. For 696321/696321 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 95763 event pairs, 42 based on Foata normal form. 86/15720 useless extension candidates. Maximal degree in co-relation 119176. Up to 7651 conditions per place. [2023-11-17 16:05:26,356 INFO L140 encePairwiseOnDemand]: 239/247 looper letters, 835 selfloop transitions, 1702 changer transitions 107/2647 dead transitions. [2023-11-17 16:05:26,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 2647 transitions, 33403 flow [2023-11-17 16:05:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-17 16:05:26,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2023-11-17 16:05:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 6306 transitions. [2023-11-17 16:05:26,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3450049239522924 [2023-11-17 16:05:26,366 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 6306 transitions. [2023-11-17 16:05:26,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 6306 transitions. [2023-11-17 16:05:26,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:26,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 6306 transitions. [2023-11-17 16:05:26,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 85.21621621621621) internal successors, (6306), 74 states have internal predecessors, (6306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:26,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 247.0) internal successors, (18525), 75 states have internal predecessors, (18525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:26,416 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 247.0) internal successors, (18525), 75 states have internal predecessors, (18525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:26,417 INFO L175 Difference]: Start difference. First operand has 189 places, 755 transitions, 8206 flow. Second operand 74 states and 6306 transitions. [2023-11-17 16:05:26,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 2647 transitions, 33403 flow [2023-11-17 16:05:31,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 2647 transitions, 26986 flow, removed 3196 selfloop flow, removed 4 redundant places. [2023-11-17 16:05:31,717 INFO L231 Difference]: Finished difference. Result has 294 places, 2159 transitions, 26735 flow [2023-11-17 16:05:31,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=5929, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=522, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=26735, PETRI_PLACES=294, PETRI_TRANSITIONS=2159} [2023-11-17 16:05:31,719 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 265 predicate places. [2023-11-17 16:05:31,719 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 2159 transitions, 26735 flow [2023-11-17 16:05:31,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 78.48) internal successors, (1962), 25 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:31,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:31,720 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:31,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 16:05:31,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:31,926 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 16:05:31,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2088693468, now seen corresponding path program 5 times [2023-11-17 16:05:31,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:31,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320561052] [2023-11-17 16:05:31,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:31,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:32,832 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:32,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:32,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320561052] [2023-11-17 16:05:32,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320561052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:32,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608651373] [2023-11-17 16:05:32,834 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:05:32,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:32,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:32,837 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 16:05:32,859 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 16:05:32,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:05:32,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:32,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-17 16:05:32,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:33,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608651373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:34,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2023-11-17 16:05:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246957777] [2023-11-17 16:05:34,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:34,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 16:05:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:34,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 16:05:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2023-11-17 16:05:34,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 247 [2023-11-17 16:05:34,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 2159 transitions, 26735 flow. Second operand has 26 states, 26 states have (on average 78.38461538461539) internal successors, (2038), 26 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:34,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:34,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 247 [2023-11-17 16:05:34,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:51,499 INFO L124 PetriNetUnfolderBase]: 24932/37614 cut-off events. [2023-11-17 16:05:51,499 INFO L125 PetriNetUnfolderBase]: For 1930484/1930484 co-relation queries the response was YES. [2023-11-17 16:05:51,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310295 conditions, 37614 events. 24932/37614 cut-off events. For 1930484/1930484 co-relation queries the response was YES. Maximal size of possible extension queue 2049. Compared 269453 event pairs, 54 based on Foata normal form. 167/37704 useless extension candidates. Maximal degree in co-relation 308467. Up to 9337 conditions per place. [2023-11-17 16:05:52,264 INFO L140 encePairwiseOnDemand]: 239/247 looper letters, 1513 selfloop transitions, 4494 changer transitions 104/6114 dead transitions. [2023-11-17 16:05:52,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 6114 transitions, 94866 flow [2023-11-17 16:05:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-17 16:05:52,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2023-11-17 16:05:52,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 6359 transitions. [2023-11-17 16:05:52,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34790458474669 [2023-11-17 16:05:52,274 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 6359 transitions. [2023-11-17 16:05:52,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 6359 transitions. [2023-11-17 16:05:52,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:52,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 6359 transitions. [2023-11-17 16:05:52,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 85.93243243243244) internal successors, (6359), 74 states have internal predecessors, (6359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:52,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 247.0) internal successors, (18525), 75 states have internal predecessors, (18525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:52,304 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 247.0) internal successors, (18525), 75 states have internal predecessors, (18525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:52,304 INFO L175 Difference]: Start difference. First operand has 294 places, 2159 transitions, 26735 flow. Second operand 74 states and 6359 transitions. [2023-11-17 16:05:52,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 6114 transitions, 94866 flow [2023-11-17 16:07:58,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 6114 transitions, 77711 flow, removed 8454 selfloop flow, removed 5 redundant places. [2023-11-17 16:07:58,541 INFO L231 Difference]: Finished difference. Result has 401 places, 5472 transitions, 79859 flow [2023-11-17 16:07:58,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=23022, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1713, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=79859, PETRI_PLACES=401, PETRI_TRANSITIONS=5472} [2023-11-17 16:07:58,543 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 372 predicate places. [2023-11-17 16:07:58,543 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 5472 transitions, 79859 flow [2023-11-17 16:07:58,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 78.38461538461539) internal successors, (2038), 26 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:07:58,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:07:58,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:07:58,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 16:07:58,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:07:58,756 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 16:07:58,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:07:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash -327090174, now seen corresponding path program 6 times [2023-11-17 16:07:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:07:58,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826790661] [2023-11-17 16:07:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:07:58,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:07:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:07:59,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:59,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:07:59,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826790661] [2023-11-17 16:07:59,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826790661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:07:59,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803468554] [2023-11-17 16:07:59,596 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:07:59,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:07:59,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:07:59,597 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 16:07:59,629 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 16:07:59,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:07:59,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:07:59,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-17 16:07:59,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:08:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:08:00,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:08:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:08:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803468554] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:08:00,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:08:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 22 [2023-11-17 16:08:00,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822461149] [2023-11-17 16:08:00,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:08:00,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:08:00,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:08:00,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:08:00,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:08:00,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 247 [2023-11-17 16:08:00,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 5472 transitions, 79859 flow. Second operand has 24 states, 24 states have (on average 78.58333333333333) internal successors, (1886), 24 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:08:00,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:08:00,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 247 [2023-11-17 16:08:00,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:09:01,256 INFO L124 PetriNetUnfolderBase]: 38991/58078 cut-off events. [2023-11-17 16:09:01,256 INFO L125 PetriNetUnfolderBase]: For 922715/922715 co-relation queries the response was YES. [2023-11-17 16:09:02,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440288 conditions, 58078 events. 38991/58078 cut-off events. For 922715/922715 co-relation queries the response was YES. Maximal size of possible extension queue 3232. Compared 430372 event pairs, 340 based on Foata normal form. 23/58096 useless extension candidates. Maximal degree in co-relation 438436. Up to 11825 conditions per place. [2023-11-17 16:09:02,846 INFO L140 encePairwiseOnDemand]: 239/247 looper letters, 2353 selfloop transitions, 8132 changer transitions 91/10579 dead transitions. [2023-11-17 16:09:02,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 10579 transitions, 180740 flow [2023-11-17 16:09:02,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-17 16:09:02,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-11-17 16:09:02,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 5199 transitions. [2023-11-17 16:09:02,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33949327412824865 [2023-11-17 16:09:02,853 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 5199 transitions. [2023-11-17 16:09:02,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 5199 transitions. [2023-11-17 16:09:02,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:09:02,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 5199 transitions. [2023-11-17 16:09:02,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 83.85483870967742) internal successors, (5199), 62 states have internal predecessors, (5199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:02,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 247.0) internal successors, (15561), 63 states have internal predecessors, (15561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:02,874 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 247.0) internal successors, (15561), 63 states have internal predecessors, (15561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:09:02,874 INFO L175 Difference]: Start difference. First operand has 401 places, 5472 transitions, 79859 flow. Second operand 62 states and 5199 transitions. [2023-11-17 16:09:02,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 10579 transitions, 180740 flow [2023-11-17 16:11:28,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 10579 transitions, 171817 flow, removed 4328 selfloop flow, removed 14 redundant places. [2023-11-17 16:11:28,602 INFO L231 Difference]: Finished difference. Result has 478 places, 9917 transitions, 175998 flow [2023-11-17 16:11:28,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=247, PETRI_DIFFERENCE_MINUEND_FLOW=76165, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=175998, PETRI_PLACES=478, PETRI_TRANSITIONS=9917} [2023-11-17 16:11:28,607 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 449 predicate places. [2023-11-17 16:11:28,608 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 9917 transitions, 175998 flow [2023-11-17 16:11:28,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 78.58333333333333) internal successors, (1886), 24 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:11:28,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:11:28,608 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:11:28,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 16:11:28,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:11:28,814 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 16:11:28,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:11:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash 188072806, now seen corresponding path program 7 times [2023-11-17 16:11:28,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:11:28,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453059494] [2023-11-17 16:11:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:11:28,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:11:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:11:29,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:11:29,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:11:29,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453059494] [2023-11-17 16:11:29,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453059494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:11:29,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225868128] [2023-11-17 16:11:29,638 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:11:29,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:11:29,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:11:29,640 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 16:11:29,642 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 16:11:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:11:29,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:11:29,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:11:29,986 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:11:29,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:11:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:11:30,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225868128] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:11:30,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:11:30,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-11-17 16:11:30,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188131299] [2023-11-17 16:11:30,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:11:30,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 16:11:30,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:11:30,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 16:11:30,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2023-11-17 16:11:30,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 247 [2023-11-17 16:11:30,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 9917 transitions, 175998 flow. Second operand has 24 states, 24 states have (on average 78.58333333333333) internal successors, (1886), 24 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:11:30,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:11:30,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 247 [2023-11-17 16:11:30,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-17 16:13:50,472 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:13:50,473 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 16:13:51,490 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 16:13:51,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2023-11-17 16:13:52,410 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 16:13:52,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 16:13:52,411 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-11-17 16:13:52,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 16:13:52,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 16:13:52,412 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 16:13:52,412 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1] [2023-11-17 16:13:52,415 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:13:52,415 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:13:52,417 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:13:52 BasicIcfg [2023-11-17 16:13:52,417 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:13:52,418 INFO L158 Benchmark]: Toolchain (without parser) took 533069.19ms. Allocated memory was 198.2MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 150.6MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-11-17 16:13:52,418 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 198.2MB. Free memory is still 152.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:13:52,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.91ms. Allocated memory is still 198.2MB. Free memory was 150.3MB in the beginning and 138.8MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:13:52,418 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.46ms. Allocated memory is still 198.2MB. Free memory was 138.8MB in the beginning and 137.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:13:52,419 INFO L158 Benchmark]: Boogie Preprocessor took 24.22ms. Allocated memory is still 198.2MB. Free memory was 137.1MB in the beginning and 135.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:13:52,419 INFO L158 Benchmark]: RCFGBuilder took 445.17ms. Allocated memory is still 198.2MB. Free memory was 135.7MB in the beginning and 120.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-11-17 16:13:52,419 INFO L158 Benchmark]: TraceAbstraction took 532349.42ms. Allocated memory was 198.2MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 119.3MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. [2023-11-17 16:13:52,420 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 198.2MB. Free memory is still 152.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 218.91ms. Allocated memory is still 198.2MB. Free memory was 150.3MB in the beginning and 138.8MB in the end (delta: 11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.46ms. Allocated memory is still 198.2MB. Free memory was 138.8MB in the beginning and 137.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.22ms. Allocated memory is still 198.2MB. Free memory was 137.1MB in the beginning and 135.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 445.17ms. Allocated memory is still 198.2MB. Free memory was 135.7MB in the beginning and 120.0MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 532349.42ms. Allocated memory was 198.2MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 119.3MB in the beginning and 2.3GB in the end (delta: -2.2GB). Peak memory consumption was 2.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 111 PlacesBefore, 29 PlacesAfterwards, 117 TransitionsBefore, 22 TransitionsAfterwards, 3534 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 12 ConcurrentYvCompositions, 13 ChoiceCompositions, 116 TotalNumberOfCompositions, 3244 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3244, independent: 3244, independent conditional: 0, independent unconditional: 3244, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2326, independent: 2326, independent conditional: 0, independent unconditional: 2326, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2326, independent: 2296, independent conditional: 0, independent unconditional: 2296, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, independent: 30, independent conditional: 0, independent unconditional: 30, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 110, independent: 110, independent conditional: 0, independent unconditional: 110, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3244, independent: 918, independent conditional: 0, independent unconditional: 918, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 2326, unknown conditional: 0, unknown unconditional: 2326] , Statistics on independence cache: Total cache size (in pairs): 60, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 119]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 164 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: 532.2s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 514.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3020 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3020 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 5.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 877 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7685 IncrementalHoareTripleChecker+Invalid, 8562 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 877 mSolverCounterUnsat, 0 mSDtfsCounter, 7685 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 744 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 493 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15836 ImplicationChecksByTransitivity, 13.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175998occurred in iteration=10, InterpolantAutomatonStates: 345, 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, 0.6s SatisfiabilityAnalysisTime, 11.6s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 568 ConstructedInterpolants, 0 QuantifiedInterpolants, 6439 SizeOfPredicates, 70 NumberOfNonLiveVariables, 1221 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 30/169 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