/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:29:58,799 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:29:58,871 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:29:58,898 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:29:58,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:29:58,900 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:29:58,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:29:58,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:29:58,901 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:29:58,903 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:29:58,904 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:29:58,904 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:29:58,904 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:29:58,904 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:29:58,904 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:29:58,905 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:29:58,905 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:29:58,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:29:58,905 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:29:58,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:29:58,906 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:29:58,906 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:29:58,906 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:29:58,906 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:29:58,906 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:29:58,907 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:29:58,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:29:58,907 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:29:58,907 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:29:58,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:29:58,908 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:29:58,908 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:29:58,908 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:29:59,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:29:59,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:29:59,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:29:59,091 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:29:59,091 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:29:59,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2023-11-17 11:30:00,335 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:30:00,573 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:30:00,574 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i [2023-11-17 11:30:00,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad2adf105/70b10d7fc6054cf3baa4a04869ed7b1c/FLAG478d15427 [2023-11-17 11:30:00,606 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad2adf105/70b10d7fc6054cf3baa4a04869ed7b1c [2023-11-17 11:30:00,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:30:00,609 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:30:00,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:30:00,610 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:30:00,613 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:30:00,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:30:00" (1/1) ... [2023-11-17 11:30:00,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43fdbf4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:00, skipping insertion in model container [2023-11-17 11:30:00,615 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:30:00" (1/1) ... [2023-11-17 11:30:00,658 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:30:00,797 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i[945,958] [2023-11-17 11:30:00,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:30:00,952 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:30:00,963 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.i[945,958] [2023-11-17 11:30:00,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:30:01,021 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:30:01,021 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:30:01,026 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:30:01,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01 WrapperNode [2023-11-17 11:30:01,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:30:01,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:30:01,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:30:01,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:30:01,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,057 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,071 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-17 11:30:01,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:30:01,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:30:01,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:30:01,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:30:01,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,097 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,098 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,101 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:30:01,102 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:30:01,102 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:30:01,102 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:30:01,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (1/1) ... [2023-11-17 11:30:01,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:30:01,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:30:01,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:30:01,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:30:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:30:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:30:01,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:30:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:30:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:30:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:30:01,164 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:30:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:30:01,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:30:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 11:30:01,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 11:30:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:30:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:30:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:30:01,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:30:01,166 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:30:01,292 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:30:01,296 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:30:01,461 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:30:01,537 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:30:01,537 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:30:01,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:30:01 BoogieIcfgContainer [2023-11-17 11:30:01,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:30:01,540 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:30:01,540 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:30:01,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:30:01,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:30:00" (1/3) ... [2023-11-17 11:30:01,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231bbaa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:30:01, skipping insertion in model container [2023-11-17 11:30:01,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:30:01" (2/3) ... [2023-11-17 11:30:01,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231bbaa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:30:01, skipping insertion in model container [2023-11-17 11:30:01,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:30:01" (3/3) ... [2023-11-17 11:30:01,544 INFO L112 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2023-11-17 11:30:01,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:30:01,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:30:01,561 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:30:01,621 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:30:01,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2023-11-17 11:30:01,681 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-11-17 11:30:01,681 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:01,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-17 11:30:01,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2023-11-17 11:30:01,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2023-11-17 11:30:01,694 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:30:01,707 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 33 transitions, 75 flow [2023-11-17 11:30:01,710 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 33 transitions, 75 flow [2023-11-17 11:30:01,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 33 transitions, 75 flow [2023-11-17 11:30:01,724 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-11-17 11:30:01,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:01,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 33 events. 0/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 58 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-17 11:30:01,725 INFO L119 LiptonReduction]: Number of co-enabled transitions 624 [2023-11-17 11:30:02,097 INFO L134 LiptonReduction]: Checked pairs total: 830 [2023-11-17 11:30:02,097 INFO L136 LiptonReduction]: Total number of compositions: 16 [2023-11-17 11:30:02,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:30:02,119 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;@3e9aa361, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:30:02,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:30:02,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:30:02,125 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 11:30:02,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:30:02,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:02,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:02,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:30:02,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash -600916916, now seen corresponding path program 1 times [2023-11-17 11:30:02,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:02,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330478613] [2023-11-17 11:30:02,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:02,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:02,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:02,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330478613] [2023-11-17 11:30:02,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330478613] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:02,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:02,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:30:02,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793708365] [2023-11-17 11:30:02,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:02,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:02,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:02,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:02,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:02,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-17 11:30:02,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:02,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:02,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-17 11:30:02,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:02,787 INFO L124 PetriNetUnfolderBase]: 573/928 cut-off events. [2023-11-17 11:30:02,787 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-17 11:30:02,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 928 events. 573/928 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4176 event pairs, 207 based on Foata normal form. 50/978 useless extension candidates. Maximal degree in co-relation 1904. Up to 539 conditions per place. [2023-11-17 11:30:02,794 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-11-17 11:30:02,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-17 11:30:02,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:02,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:02,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2023-11-17 11:30:02,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2023-11-17 11:30:02,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 89 transitions. [2023-11-17 11:30:02,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 89 transitions. [2023-11-17 11:30:02,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:02,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 89 transitions. [2023-11-17 11:30:02,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:02,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:02,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:02,811 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 89 transitions. [2023-11-17 11:30:02,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-17 11:30:02,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:30:02,814 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-11-17 11:30:02,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2023-11-17 11:30:02,818 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 11:30:02,818 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-11-17 11:30:02,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:02,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:02,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:02,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:30:02,819 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:30:02,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:02,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1448555075, now seen corresponding path program 1 times [2023-11-17 11:30:02,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:02,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318360552] [2023-11-17 11:30:02,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:02,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:02,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:02,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318360552] [2023-11-17 11:30:02,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318360552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:02,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:02,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:30:02,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392547161] [2023-11-17 11:30:02,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:02,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:02,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:02,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:02,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-17 11:30:02,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:02,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:02,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-17 11:30:02,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:03,083 INFO L124 PetriNetUnfolderBase]: 550/893 cut-off events. [2023-11-17 11:30:03,083 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2023-11-17 11:30:03,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2434 conditions, 893 events. 550/893 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3810 event pairs, 89 based on Foata normal form. 6/899 useless extension candidates. Maximal degree in co-relation 2422. Up to 446 conditions per place. [2023-11-17 11:30:03,089 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 30 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-11-17 11:30:03,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 224 flow [2023-11-17 11:30:03,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:30:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:30:03,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2023-11-17 11:30:03,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2023-11-17 11:30:03,091 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 115 transitions. [2023-11-17 11:30:03,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 115 transitions. [2023-11-17 11:30:03,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:03,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 115 transitions. [2023-11-17 11:30:03,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,093 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,093 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 115 transitions. [2023-11-17 11:30:03,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 224 flow [2023-11-17 11:30:03,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 40 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:03,096 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 134 flow [2023-11-17 11:30:03,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-11-17 11:30:03,096 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-11-17 11:30:03,097 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 134 flow [2023-11-17 11:30:03,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:03,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:03,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:30:03,097 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:30:03,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:03,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1448555137, now seen corresponding path program 1 times [2023-11-17 11:30:03,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:03,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363566189] [2023-11-17 11:30:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:03,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:03,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:03,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363566189] [2023-11-17 11:30:03,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363566189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:03,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:03,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:30:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256158082] [2023-11-17 11:30:03,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:03,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:03,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-17 11:30:03,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:03,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-17 11:30:03,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:03,283 INFO L124 PetriNetUnfolderBase]: 526/855 cut-off events. [2023-11-17 11:30:03,283 INFO L125 PetriNetUnfolderBase]: For 499/499 co-relation queries the response was YES. [2023-11-17 11:30:03,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 855 events. 526/855 cut-off events. For 499/499 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3636 event pairs, 79 based on Foata normal form. 4/859 useless extension candidates. Maximal degree in co-relation 2516. Up to 476 conditions per place. [2023-11-17 11:30:03,287 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 34 selfloop transitions, 12 changer transitions 0/46 dead transitions. [2023-11-17 11:30:03,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 46 transitions, 292 flow [2023-11-17 11:30:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:30:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:30:03,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2023-11-17 11:30:03,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-11-17 11:30:03,289 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2023-11-17 11:30:03,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2023-11-17 11:30:03,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:03,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2023-11-17 11:30:03,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,293 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,293 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 134 flow. Second operand 4 states and 116 transitions. [2023-11-17 11:30:03,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 46 transitions, 292 flow [2023-11-17 11:30:03,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:30:03,296 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 222 flow [2023-11-17 11:30:03,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-17 11:30:03,297 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 11:30:03,298 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 222 flow [2023-11-17 11:30:03,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:03,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:03,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:30:03,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:30:03,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:03,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1955534290, now seen corresponding path program 1 times [2023-11-17 11:30:03,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:03,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465079469] [2023-11-17 11:30:03,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:03,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:03,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:03,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:03,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465079469] [2023-11-17 11:30:03,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465079469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:03,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:03,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:30:03,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248422445] [2023-11-17 11:30:03,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:03,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:30:03,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:30:03,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:30:03,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2023-11-17 11:30:03,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:03,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2023-11-17 11:30:03,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:03,463 INFO L124 PetriNetUnfolderBase]: 314/565 cut-off events. [2023-11-17 11:30:03,464 INFO L125 PetriNetUnfolderBase]: For 1188/1205 co-relation queries the response was YES. [2023-11-17 11:30:03,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 565 events. 314/565 cut-off events. For 1188/1205 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2454 event pairs, 70 based on Foata normal form. 45/605 useless extension candidates. Maximal degree in co-relation 1898. Up to 443 conditions per place. [2023-11-17 11:30:03,467 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 44 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2023-11-17 11:30:03,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 452 flow [2023-11-17 11:30:03,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:30:03,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:30:03,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2023-11-17 11:30:03,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2023-11-17 11:30:03,470 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 92 transitions. [2023-11-17 11:30:03,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 92 transitions. [2023-11-17 11:30:03,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:03,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 92 transitions. [2023-11-17 11:30:03,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,472 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 222 flow. Second operand 3 states and 92 transitions. [2023-11-17 11:30:03,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 452 flow [2023-11-17 11:30:03,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 53 transitions, 452 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:30:03,477 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 248 flow [2023-11-17 11:30:03,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-11-17 11:30:03,479 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-11-17 11:30:03,479 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 248 flow [2023-11-17 11:30:03,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:03,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:03,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:30:03,480 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:30:03,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash -752201597, now seen corresponding path program 1 times [2023-11-17 11:30:03,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:03,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298633836] [2023-11-17 11:30:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:03,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:03,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:03,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:03,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298633836] [2023-11-17 11:30:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298633836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:03,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:03,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836083671] [2023-11-17 11:30:03,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:03,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:03,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:03,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:03,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:03,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2023-11-17 11:30:03,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:03,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2023-11-17 11:30:03,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:03,663 INFO L124 PetriNetUnfolderBase]: 189/365 cut-off events. [2023-11-17 11:30:03,663 INFO L125 PetriNetUnfolderBase]: For 771/789 co-relation queries the response was YES. [2023-11-17 11:30:03,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1466 conditions, 365 events. 189/365 cut-off events. For 771/789 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1497 event pairs, 38 based on Foata normal form. 56/416 useless extension candidates. Maximal degree in co-relation 1444. Up to 140 conditions per place. [2023-11-17 11:30:03,671 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 52 selfloop transitions, 7 changer transitions 2/66 dead transitions. [2023-11-17 11:30:03,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 578 flow [2023-11-17 11:30:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:30:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:30:03,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2023-11-17 11:30:03,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590909090909091 [2023-11-17 11:30:03,673 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 123 transitions. [2023-11-17 11:30:03,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 123 transitions. [2023-11-17 11:30:03,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:03,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 123 transitions. [2023-11-17 11:30:03,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,675 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,675 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 248 flow. Second operand 4 states and 123 transitions. [2023-11-17 11:30:03,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 578 flow [2023-11-17 11:30:03,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 66 transitions, 574 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:03,678 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 284 flow [2023-11-17 11:30:03,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-11-17 11:30:03,680 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-11-17 11:30:03,680 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 284 flow [2023-11-17 11:30:03,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:03,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:03,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:30:03,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:30:03,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:03,681 INFO L85 PathProgramCache]: Analyzing trace with hash -452243952, now seen corresponding path program 1 times [2023-11-17 11:30:03,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:03,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035865263] [2023-11-17 11:30:03,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:03,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:03,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:03,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:03,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035865263] [2023-11-17 11:30:03,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035865263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:03,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:03,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:03,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114193032] [2023-11-17 11:30:03,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:03,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:03,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:03,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:03,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:03,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 55 [2023-11-17 11:30:03,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:03,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 55 [2023-11-17 11:30:03,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:03,926 INFO L124 PetriNetUnfolderBase]: 229/430 cut-off events. [2023-11-17 11:30:03,926 INFO L125 PetriNetUnfolderBase]: For 1378/1378 co-relation queries the response was YES. [2023-11-17 11:30:03,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1930 conditions, 430 events. 229/430 cut-off events. For 1378/1378 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1763 event pairs, 13 based on Foata normal form. 7/437 useless extension candidates. Maximal degree in co-relation 1906. Up to 264 conditions per place. [2023-11-17 11:30:03,929 INFO L140 encePairwiseOnDemand]: 47/55 looper letters, 46 selfloop transitions, 22 changer transitions 11/79 dead transitions. [2023-11-17 11:30:03,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 79 transitions, 719 flow [2023-11-17 11:30:03,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:30:03,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:30:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2023-11-17 11:30:03,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2023-11-17 11:30:03,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 140 transitions. [2023-11-17 11:30:03,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 140 transitions. [2023-11-17 11:30:03,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:03,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 140 transitions. [2023-11-17 11:30:03,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,933 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,933 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 284 flow. Second operand 5 states and 140 transitions. [2023-11-17 11:30:03,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 79 transitions, 719 flow [2023-11-17 11:30:03,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 677 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-17 11:30:03,939 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 433 flow [2023-11-17 11:30:03,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=433, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-11-17 11:30:03,941 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 21 predicate places. [2023-11-17 11:30:03,941 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 433 flow [2023-11-17 11:30:03,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:03,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:03,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:03,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:30:03,942 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:30:03,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:03,942 INFO L85 PathProgramCache]: Analyzing trace with hash -204144967, now seen corresponding path program 1 times [2023-11-17 11:30:03,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:03,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093813413] [2023-11-17 11:30:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:03,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:04,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:04,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:04,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093813413] [2023-11-17 11:30:04,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093813413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:04,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:04,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:30:04,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220891231] [2023-11-17 11:30:04,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:04,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:30:04,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:04,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:30:04,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:30:04,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 55 [2023-11-17 11:30:04,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 433 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:04,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:04,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 55 [2023-11-17 11:30:04,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:04,103 INFO L124 PetriNetUnfolderBase]: 232/478 cut-off events. [2023-11-17 11:30:04,103 INFO L125 PetriNetUnfolderBase]: For 1791/1791 co-relation queries the response was YES. [2023-11-17 11:30:04,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2302 conditions, 478 events. 232/478 cut-off events. For 1791/1791 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2199 event pairs, 44 based on Foata normal form. 2/480 useless extension candidates. Maximal degree in co-relation 2275. Up to 236 conditions per place. [2023-11-17 11:30:04,105 INFO L140 encePairwiseOnDemand]: 48/55 looper letters, 38 selfloop transitions, 19 changer transitions 17/74 dead transitions. [2023-11-17 11:30:04,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 740 flow [2023-11-17 11:30:04,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:30:04,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:30:04,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2023-11-17 11:30:04,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-11-17 11:30:04,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2023-11-17 11:30:04,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2023-11-17 11:30:04,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:04,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2023-11-17 11:30:04,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:04,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:04,108 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 55.0) internal successors, (275), 5 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:04,108 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 433 flow. Second operand 4 states and 116 transitions. [2023-11-17 11:30:04,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 740 flow [2023-11-17 11:30:04,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 74 transitions, 730 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 11:30:04,113 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 425 flow [2023-11-17 11:30:04,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=425, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-11-17 11:30:04,114 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-11-17 11:30:04,115 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 425 flow [2023-11-17 11:30:04,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:04,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:30:04,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:30:04,119 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:30:04,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:30:04,119 INFO L85 PathProgramCache]: Analyzing trace with hash -195819923, now seen corresponding path program 2 times [2023-11-17 11:30:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:30:04,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892420709] [2023-11-17 11:30:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:30:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:30:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:30:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:30:04,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:30:04,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892420709] [2023-11-17 11:30:04,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892420709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:30:04,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:30:04,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:30:04,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352884471] [2023-11-17 11:30:04,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:30:04,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:30:04,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:30:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:30:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:30:04,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 55 [2023-11-17 11:30:04,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 425 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:04,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:30:04,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 55 [2023-11-17 11:30:04,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:30:04,235 INFO L124 PetriNetUnfolderBase]: 139/289 cut-off events. [2023-11-17 11:30:04,235 INFO L125 PetriNetUnfolderBase]: For 1639/1679 co-relation queries the response was YES. [2023-11-17 11:30:04,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 289 events. 139/289 cut-off events. For 1639/1679 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1232 event pairs, 20 based on Foata normal form. 43/326 useless extension candidates. Maximal degree in co-relation 1395. Up to 121 conditions per place. [2023-11-17 11:30:04,236 INFO L140 encePairwiseOnDemand]: 50/55 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2023-11-17 11:30:04,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 826 flow [2023-11-17 11:30:04,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:30:04,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:30:04,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2023-11-17 11:30:04,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-11-17 11:30:04,237 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 143 transitions. [2023-11-17 11:30:04,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 143 transitions. [2023-11-17 11:30:04,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:30:04,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 143 transitions. [2023-11-17 11:30:04,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:04,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:04,239 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:04,239 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 425 flow. Second operand 5 states and 143 transitions. [2023-11-17 11:30:04,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 826 flow [2023-11-17 11:30:04,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 735 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 11:30:04,242 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-11-17 11:30:04,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=55, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-11-17 11:30:04,242 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-11-17 11:30:04,242 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-11-17 11:30:04,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:30:04,244 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 11:30:04,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 11:30:04,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 11:30:04,245 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 11:30:04,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:30:04,245 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-17 11:30:04,247 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:30:04,247 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:30:04,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:30:04 BasicIcfg [2023-11-17 11:30:04,250 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:30:04,250 INFO L158 Benchmark]: Toolchain (without parser) took 3640.90ms. Allocated memory was 305.1MB in the beginning and 390.1MB in the end (delta: 84.9MB). Free memory was 252.2MB in the beginning and 195.0MB in the end (delta: 57.3MB). Peak memory consumption was 143.2MB. Max. memory is 8.0GB. [2023-11-17 11:30:04,250 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory was 146.9MB in the beginning and 146.8MB in the end (delta: 89.7kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:30:04,250 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.87ms. Allocated memory is still 305.1MB. Free memory was 251.7MB in the beginning and 231.3MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:30:04,251 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.15ms. Allocated memory is still 305.1MB. Free memory was 231.3MB in the beginning and 229.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:30:04,251 INFO L158 Benchmark]: Boogie Preprocessor took 29.15ms. Allocated memory is still 305.1MB. Free memory was 229.7MB in the beginning and 228.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:30:04,251 INFO L158 Benchmark]: RCFGBuilder took 436.77ms. Allocated memory is still 305.1MB. Free memory was 228.1MB in the beginning and 206.1MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-11-17 11:30:04,251 INFO L158 Benchmark]: TraceAbstraction took 2709.76ms. Allocated memory was 305.1MB in the beginning and 390.1MB in the end (delta: 84.9MB). Free memory was 205.6MB in the beginning and 195.0MB in the end (delta: 10.6MB). Peak memory consumption was 96.1MB. Max. memory is 8.0GB. [2023-11-17 11:30:04,252 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory was 146.9MB in the beginning and 146.8MB in the end (delta: 89.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 416.87ms. Allocated memory is still 305.1MB. Free memory was 251.7MB in the beginning and 231.3MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.15ms. Allocated memory is still 305.1MB. Free memory was 231.3MB in the beginning and 229.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.15ms. Allocated memory is still 305.1MB. Free memory was 229.7MB in the beginning and 228.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 436.77ms. Allocated memory is still 305.1MB. Free memory was 228.1MB in the beginning and 206.1MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2709.76ms. Allocated memory was 305.1MB in the beginning and 390.1MB in the end (delta: 84.9MB). Free memory was 205.6MB in the beginning and 195.0MB in the end (delta: 10.6MB). Peak memory consumption was 96.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 43 PlacesBefore, 27 PlacesAfterwards, 33 TransitionsBefore, 17 TransitionsAfterwards, 624 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 16 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 16 TotalNumberOfCompositions, 830 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 570, independent: 535, independent conditional: 0, independent unconditional: 535, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 434, independent: 406, independent conditional: 0, independent unconditional: 406, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 434, independent: 396, independent conditional: 0, independent unconditional: 396, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 38, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 82, independent: 22, independent conditional: 0, independent unconditional: 22, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 570, independent: 129, independent conditional: 0, independent unconditional: 129, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 434, unknown conditional: 0, unknown unconditional: 434] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 102 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 102 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 344 IncrementalHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 6 mSDtfsCounter, 344 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=433occurred in iteration=6, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 11:30:04,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...