/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:17:30,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:17:30,565 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 15:17:30,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:17:30,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:17:30,587 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:17:30,587 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:17:30,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:17:30,588 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:17:30,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:17:30,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:17:30,588 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:17:30,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:17:30,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:17:30,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:17:30,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:17:30,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:17:30,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:17:30,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:17:30,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:17:30,600 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:17:30,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:17:30,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:17:30,601 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:17:30,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:17:30,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:17:30,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:17:30,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:17:30,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:17:30,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:17:30,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:17:30,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:17:30,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:17:30,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:17:30,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:17:30,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:17:30,837 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:17:30,837 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:17:30,838 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2023-11-17 15:17:31,920 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:17:32,098 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:17:32,099 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.i [2023-11-17 15:17:32,109 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa1aaab0/1f20e24cf8954671b00ab0c2389b81da/FLAG03e447d1e [2023-11-17 15:17:32,118 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fa1aaab0/1f20e24cf8954671b00ab0c2389b81da [2023-11-17 15:17:32,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:17:32,121 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:17:32,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:17:32,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:17:32,125 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:17:32,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2b4417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32, skipping insertion in model container [2023-11-17 15:17:32,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,175 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:17:32,281 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/safe002_tso.i[945,958] [2023-11-17 15:17:32,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:17:32,436 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:17:32,444 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/safe002_tso.i[945,958] [2023-11-17 15:17:32,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:17:32,483 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:17:32,483 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:17:32,488 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:17:32,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32 WrapperNode [2023-11-17 15:17:32,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:17:32,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:17:32,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:17:32,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:17:32,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,510 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,531 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-17 15:17:32,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:17:32,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:17:32,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:17:32,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:17:32,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,546 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,547 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,548 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:17:32,553 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:17:32,553 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:17:32,553 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:17:32,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (1/1) ... [2023-11-17 15:17:32,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:17:32,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:17:32,583 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 15:17:32,586 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 15:17:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:17:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:17:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:17:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:17:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:17:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:17:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:17:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:17:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:17:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:17:32,616 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:17:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:17:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:17:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:17:32,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:17:32,617 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 15:17:32,707 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:17:32,708 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:17:32,910 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:17:32,923 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:17:32,924 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:17:32,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:17:32 BoogieIcfgContainer [2023-11-17 15:17:32,925 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:17:32,927 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:17:32,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:17:32,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:17:32,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:17:32" (1/3) ... [2023-11-17 15:17:32,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d0f6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:17:32, skipping insertion in model container [2023-11-17 15:17:32,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:32" (2/3) ... [2023-11-17 15:17:32,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d0f6c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:17:32, skipping insertion in model container [2023-11-17 15:17:32,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:17:32" (3/3) ... [2023-11-17 15:17:32,931 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2023-11-17 15:17:32,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:17:32,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:17:32,950 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:17:33,032 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:17:33,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 196 flow [2023-11-17 15:17:33,116 INFO L124 PetriNetUnfolderBase]: 2/89 cut-off events. [2023-11-17 15:17:33,116 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:33,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-11-17 15:17:33,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 196 flow [2023-11-17 15:17:33,127 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2023-11-17 15:17:33,130 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:17:33,148 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 74 transitions, 157 flow [2023-11-17 15:17:33,150 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 74 transitions, 157 flow [2023-11-17 15:17:33,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 74 transitions, 157 flow [2023-11-17 15:17:33,176 INFO L124 PetriNetUnfolderBase]: 1/74 cut-off events. [2023-11-17 15:17:33,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:33,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 74 events. 1/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-11-17 15:17:33,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-11-17 15:17:34,784 INFO L134 LiptonReduction]: Checked pairs total: 2221 [2023-11-17 15:17:34,784 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-11-17 15:17:34,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:17:34,799 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;@7a77ec33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:17:34,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:17:34,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:17:34,803 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 15:17:34,803 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:34,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:34,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:34,804 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 15:17:34,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:34,807 INFO L85 PathProgramCache]: Analyzing trace with hash 209565276, now seen corresponding path program 1 times [2023-11-17 15:17:34,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:34,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257671560] [2023-11-17 15:17:34,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:34,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:35,155 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 15:17:35,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:35,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257671560] [2023-11-17 15:17:35,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257671560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:35,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:35,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:17:35,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624117327] [2023-11-17 15:17:35,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:17:35,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:35,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:17:35,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:17:35,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 153 [2023-11-17 15:17:35,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:35,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 153 [2023-11-17 15:17:35,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:35,447 INFO L124 PetriNetUnfolderBase]: 557/896 cut-off events. [2023-11-17 15:17:35,448 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-17 15:17:35,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 896 events. 557/896 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3934 event pairs, 184 based on Foata normal form. 42/938 useless extension candidates. Maximal degree in co-relation 1840. Up to 579 conditions per place. [2023-11-17 15:17:35,458 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 25 selfloop transitions, 6 changer transitions 0/31 dead transitions. [2023-11-17 15:17:35,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-17 15:17:35,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:17:35,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:17:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 260 transitions. [2023-11-17 15:17:35,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5664488017429193 [2023-11-17 15:17:35,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 260 transitions. [2023-11-17 15:17:35,475 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 260 transitions. [2023-11-17 15:17:35,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:35,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 260 transitions. [2023-11-17 15:17:35,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,490 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 260 transitions. [2023-11-17 15:17:35,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-17 15:17:35,492 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 15:17:35,493 INFO L231 Difference]: Finished difference. Result has 28 places, 22 transitions, 86 flow [2023-11-17 15:17:35,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, 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 15:17:35,498 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 15:17:35,498 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 86 flow [2023-11-17 15:17:35,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:35,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:35,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:17:35,499 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 15:17:35,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:35,500 INFO L85 PathProgramCache]: Analyzing trace with hash -2093411813, now seen corresponding path program 1 times [2023-11-17 15:17:35,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:35,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930494763] [2023-11-17 15:17:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:35,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:35,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:35,616 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 15:17:35,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:35,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930494763] [2023-11-17 15:17:35,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930494763] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:35,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:35,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:35,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809737340] [2023-11-17 15:17:35,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:35,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:35,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:35,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:35,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:35,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 153 [2023-11-17 15:17:35,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 22 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:35,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 153 [2023-11-17 15:17:35,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:35,698 INFO L124 PetriNetUnfolderBase]: 511/826 cut-off events. [2023-11-17 15:17:35,698 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-11-17 15:17:35,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 826 events. 511/826 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3333 event pairs, 122 based on Foata normal form. 12/838 useless extension candidates. Maximal degree in co-relation 2240. Up to 415 conditions per place. [2023-11-17 15:17:35,702 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 29 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2023-11-17 15:17:35,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 202 flow [2023-11-17 15:17:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:35,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-11-17 15:17:35,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5522875816993464 [2023-11-17 15:17:35,704 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-11-17 15:17:35,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-11-17 15:17:35,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:35,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-11-17 15:17:35,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,708 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,709 INFO L175 Difference]: Start difference. First operand has 28 places, 22 transitions, 86 flow. Second operand 4 states and 338 transitions. [2023-11-17 15:17:35,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 202 flow [2023-11-17 15:17:35,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 36 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:17:35,713 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 122 flow [2023-11-17 15:17:35,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-11-17 15:17:35,713 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-17 15:17:35,714 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 122 flow [2023-11-17 15:17:35,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:35,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:35,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:17:35,716 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 15:17:35,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:35,720 INFO L85 PathProgramCache]: Analyzing trace with hash -471255618, now seen corresponding path program 1 times [2023-11-17 15:17:35,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:35,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917376914] [2023-11-17 15:17:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:35,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:35,846 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 15:17:35,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:35,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917376914] [2023-11-17 15:17:35,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917376914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:35,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:35,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:35,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151435805] [2023-11-17 15:17:35,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:35,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:17:35,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:35,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:17:35,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:17:35,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 153 [2023-11-17 15:17:35,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 122 flow. Second operand has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:35,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 153 [2023-11-17 15:17:35,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:35,936 INFO L124 PetriNetUnfolderBase]: 528/859 cut-off events. [2023-11-17 15:17:35,936 INFO L125 PetriNetUnfolderBase]: For 702/702 co-relation queries the response was YES. [2023-11-17 15:17:35,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2505 conditions, 859 events. 528/859 cut-off events. For 702/702 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3597 event pairs, 131 based on Foata normal form. 44/903 useless extension candidates. Maximal degree in co-relation 2490. Up to 476 conditions per place. [2023-11-17 15:17:35,939 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 29 selfloop transitions, 8 changer transitions 15/52 dead transitions. [2023-11-17 15:17:35,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 350 flow [2023-11-17 15:17:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:17:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:17:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 422 transitions. [2023-11-17 15:17:35,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5516339869281046 [2023-11-17 15:17:35,940 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 422 transitions. [2023-11-17 15:17:35,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 422 transitions. [2023-11-17 15:17:35,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:35,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 422 transitions. [2023-11-17 15:17:35,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,943 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,943 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 122 flow. Second operand 5 states and 422 transitions. [2023-11-17 15:17:35,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 350 flow [2023-11-17 15:17:35,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 52 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:17:35,946 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 140 flow [2023-11-17 15:17:35,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-11-17 15:17:35,946 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 15:17:35,946 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 140 flow [2023-11-17 15:17:35,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:35,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:35,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:35,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:17:35,947 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 15:17:35,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:35,947 INFO L85 PathProgramCache]: Analyzing trace with hash -257868475, now seen corresponding path program 1 times [2023-11-17 15:17:35,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:35,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108156552] [2023-11-17 15:17:35,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:35,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:35,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:36,070 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 15:17:36,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:36,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108156552] [2023-11-17 15:17:36,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108156552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:36,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:36,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:36,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874381497] [2023-11-17 15:17:36,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:36,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:36,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:36,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:36,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:36,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 153 [2023-11-17 15:17:36,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:36,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 153 [2023-11-17 15:17:36,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:36,146 INFO L124 PetriNetUnfolderBase]: 253/426 cut-off events. [2023-11-17 15:17:36,147 INFO L125 PetriNetUnfolderBase]: For 476/476 co-relation queries the response was YES. [2023-11-17 15:17:36,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 426 events. 253/426 cut-off events. For 476/476 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1510 event pairs, 61 based on Foata normal form. 6/432 useless extension candidates. Maximal degree in co-relation 1382. Up to 211 conditions per place. [2023-11-17 15:17:36,150 INFO L140 encePairwiseOnDemand]: 148/153 looper letters, 31 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-11-17 15:17:36,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 252 flow [2023-11-17 15:17:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:36,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 337 transitions. [2023-11-17 15:17:36,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5506535947712419 [2023-11-17 15:17:36,151 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 337 transitions. [2023-11-17 15:17:36,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 337 transitions. [2023-11-17 15:17:36,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:36,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 337 transitions. [2023-11-17 15:17:36,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.25) internal successors, (337), 4 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,154 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,154 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 140 flow. Second operand 4 states and 337 transitions. [2023-11-17 15:17:36,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 252 flow [2023-11-17 15:17:36,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 222 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-17 15:17:36,158 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 139 flow [2023-11-17 15:17:36,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-11-17 15:17:36,159 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-17 15:17:36,160 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 139 flow [2023-11-17 15:17:36,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:36,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:36,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:17:36,160 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 15:17:36,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:36,161 INFO L85 PathProgramCache]: Analyzing trace with hash -257868568, now seen corresponding path program 1 times [2023-11-17 15:17:36,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:36,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021441543] [2023-11-17 15:17:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:36,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:36,283 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 15:17:36,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:36,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021441543] [2023-11-17 15:17:36,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021441543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:36,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:36,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:36,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30934058] [2023-11-17 15:17:36,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:36,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:36,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:36,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:36,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:36,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 153 [2023-11-17 15:17:36,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:36,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 153 [2023-11-17 15:17:36,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:36,348 INFO L124 PetriNetUnfolderBase]: 245/414 cut-off events. [2023-11-17 15:17:36,348 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2023-11-17 15:17:36,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 414 events. 245/414 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1484 event pairs, 57 based on Foata normal form. 4/418 useless extension candidates. Maximal degree in co-relation 1314. Up to 273 conditions per place. [2023-11-17 15:17:36,351 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 30 selfloop transitions, 10 changer transitions 0/40 dead transitions. [2023-11-17 15:17:36,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 40 transitions, 268 flow [2023-11-17 15:17:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:36,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2023-11-17 15:17:36,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571895424836601 [2023-11-17 15:17:36,353 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 341 transitions. [2023-11-17 15:17:36,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 341 transitions. [2023-11-17 15:17:36,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:36,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 341 transitions. [2023-11-17 15:17:36,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,355 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,355 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 139 flow. Second operand 4 states and 341 transitions. [2023-11-17 15:17:36,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 40 transitions, 268 flow [2023-11-17 15:17:36,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 40 transitions, 254 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 15:17:36,357 INFO L231 Difference]: Finished difference. Result has 39 places, 26 transitions, 168 flow [2023-11-17 15:17:36,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=39, PETRI_TRANSITIONS=26} [2023-11-17 15:17:36,358 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-11-17 15:17:36,358 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 26 transitions, 168 flow [2023-11-17 15:17:36,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:36,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:36,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:17:36,359 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 15:17:36,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:36,359 INFO L85 PathProgramCache]: Analyzing trace with hash 635277457, now seen corresponding path program 1 times [2023-11-17 15:17:36,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:36,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533938399] [2023-11-17 15:17:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:36,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:36,456 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 15:17:36,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:36,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533938399] [2023-11-17 15:17:36,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533938399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:36,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:36,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:36,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997442171] [2023-11-17 15:17:36,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:36,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:17:36,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:36,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:17:36,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:17:36,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 153 [2023-11-17 15:17:36,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 26 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:36,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 153 [2023-11-17 15:17:36,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:36,523 INFO L124 PetriNetUnfolderBase]: 325/554 cut-off events. [2023-11-17 15:17:36,523 INFO L125 PetriNetUnfolderBase]: For 748/748 co-relation queries the response was YES. [2023-11-17 15:17:36,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 554 events. 325/554 cut-off events. For 748/748 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2096 event pairs, 105 based on Foata normal form. 12/566 useless extension candidates. Maximal degree in co-relation 1844. Up to 248 conditions per place. [2023-11-17 15:17:36,525 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 26 selfloop transitions, 8 changer transitions 11/45 dead transitions. [2023-11-17 15:17:36,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 333 flow [2023-11-17 15:17:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:17:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:17:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-11-17 15:17:36,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464052287581699 [2023-11-17 15:17:36,527 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-11-17 15:17:36,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-11-17 15:17:36,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:36,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-11-17 15:17:36,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,529 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,529 INFO L175 Difference]: Start difference. First operand has 39 places, 26 transitions, 168 flow. Second operand 5 states and 418 transitions. [2023-11-17 15:17:36,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 333 flow [2023-11-17 15:17:36,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:17:36,531 INFO L231 Difference]: Finished difference. Result has 43 places, 23 transitions, 157 flow [2023-11-17 15:17:36,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=43, PETRI_TRANSITIONS=23} [2023-11-17 15:17:36,532 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-11-17 15:17:36,532 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 23 transitions, 157 flow [2023-11-17 15:17:36,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:36,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:36,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:17:36,532 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 15:17:36,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:36,533 INFO L85 PathProgramCache]: Analyzing trace with hash 595953337, now seen corresponding path program 2 times [2023-11-17 15:17:36,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:36,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589772837] [2023-11-17 15:17:36,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:36,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:36,602 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 15:17:36,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:36,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589772837] [2023-11-17 15:17:36,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589772837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:36,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:36,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:17:36,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37215360] [2023-11-17 15:17:36,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:36,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:17:36,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:36,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:17:36,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:17:36,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 153 [2023-11-17 15:17:36,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 23 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:36,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 153 [2023-11-17 15:17:36,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:36,661 INFO L124 PetriNetUnfolderBase]: 191/330 cut-off events. [2023-11-17 15:17:36,661 INFO L125 PetriNetUnfolderBase]: For 524/524 co-relation queries the response was YES. [2023-11-17 15:17:36,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 330 events. 191/330 cut-off events. For 524/524 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1115 event pairs, 35 based on Foata normal form. 12/342 useless extension candidates. Maximal degree in co-relation 1134. Up to 110 conditions per place. [2023-11-17 15:17:36,663 INFO L140 encePairwiseOnDemand]: 148/153 looper letters, 19 selfloop transitions, 3 changer transitions 17/39 dead transitions. [2023-11-17 15:17:36,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 39 transitions, 275 flow [2023-11-17 15:17:36,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:17:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:17:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 493 transitions. [2023-11-17 15:17:36,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2023-11-17 15:17:36,664 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 493 transitions. [2023-11-17 15:17:36,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 493 transitions. [2023-11-17 15:17:36,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:36,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 493 transitions. [2023-11-17 15:17:36,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.16666666666667) internal successors, (493), 6 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,667 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,667 INFO L175 Difference]: Start difference. First operand has 43 places, 23 transitions, 157 flow. Second operand 6 states and 493 transitions. [2023-11-17 15:17:36,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 39 transitions, 275 flow [2023-11-17 15:17:36,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 243 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-17 15:17:36,668 INFO L231 Difference]: Finished difference. Result has 41 places, 17 transitions, 82 flow [2023-11-17 15:17:36,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=41, PETRI_TRANSITIONS=17} [2023-11-17 15:17:36,669 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-11-17 15:17:36,669 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 17 transitions, 82 flow [2023-11-17 15:17:36,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:36,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:36,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:17:36,670 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 15:17:36,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:36,670 INFO L85 PathProgramCache]: Analyzing trace with hash 596008207, now seen corresponding path program 3 times [2023-11-17 15:17:36,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:36,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402334768] [2023-11-17 15:17:36,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:36,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:36,725 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 15:17:36,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:36,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402334768] [2023-11-17 15:17:36,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402334768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:36,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:36,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:36,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121249616] [2023-11-17 15:17:36,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:36,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:36,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:36,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:36,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:36,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 153 [2023-11-17 15:17:36,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 17 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:36,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 153 [2023-11-17 15:17:36,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:36,785 INFO L124 PetriNetUnfolderBase]: 74/152 cut-off events. [2023-11-17 15:17:36,785 INFO L125 PetriNetUnfolderBase]: For 388/389 co-relation queries the response was YES. [2023-11-17 15:17:36,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467 conditions, 152 events. 74/152 cut-off events. For 388/389 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 490 event pairs, 17 based on Foata normal form. 12/163 useless extension candidates. Maximal degree in co-relation 449. Up to 95 conditions per place. [2023-11-17 15:17:36,786 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 21 selfloop transitions, 4 changer transitions 16/42 dead transitions. [2023-11-17 15:17:36,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 42 transitions, 279 flow [2023-11-17 15:17:36,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:17:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:17:36,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2023-11-17 15:17:36,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5660130718954248 [2023-11-17 15:17:36,788 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2023-11-17 15:17:36,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2023-11-17 15:17:36,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:36,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2023-11-17 15:17:36,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,790 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,790 INFO L175 Difference]: Start difference. First operand has 41 places, 17 transitions, 82 flow. Second operand 5 states and 433 transitions. [2023-11-17 15:17:36,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 42 transitions, 279 flow [2023-11-17 15:17:36,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 209 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-11-17 15:17:36,792 INFO L231 Difference]: Finished difference. Result has 34 places, 20 transitions, 90 flow [2023-11-17 15:17:36,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=20} [2023-11-17 15:17:36,792 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-17 15:17:36,792 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 20 transitions, 90 flow [2023-11-17 15:17:36,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:36,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:36,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:17:36,793 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:36,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash -76558558, now seen corresponding path program 1 times [2023-11-17 15:17:36,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:36,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138215385] [2023-11-17 15:17:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:36,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:36,903 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 15:17:36,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:36,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138215385] [2023-11-17 15:17:36,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138215385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:36,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:36,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:36,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961579060] [2023-11-17 15:17:36,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:36,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:17:36,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:36,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:17:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:17:36,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 153 [2023-11-17 15:17:36,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 20 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:36,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 153 [2023-11-17 15:17:36,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:36,977 INFO L124 PetriNetUnfolderBase]: 43/101 cut-off events. [2023-11-17 15:17:36,978 INFO L125 PetriNetUnfolderBase]: For 142/143 co-relation queries the response was YES. [2023-11-17 15:17:36,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 101 events. 43/101 cut-off events. For 142/143 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 269 event pairs, 4 based on Foata normal form. 10/110 useless extension candidates. Maximal degree in co-relation 357. Up to 59 conditions per place. [2023-11-17 15:17:36,978 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 23 selfloop transitions, 7 changer transitions 13/44 dead transitions. [2023-11-17 15:17:36,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 288 flow [2023-11-17 15:17:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:17:36,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:17:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 513 transitions. [2023-11-17 15:17:36,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5588235294117647 [2023-11-17 15:17:36,994 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 513 transitions. [2023-11-17 15:17:36,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 513 transitions. [2023-11-17 15:17:36,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:36,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 513 transitions. [2023-11-17 15:17:36,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,997 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,997 INFO L175 Difference]: Start difference. First operand has 34 places, 20 transitions, 90 flow. Second operand 6 states and 513 transitions. [2023-11-17 15:17:36,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 44 transitions, 288 flow [2023-11-17 15:17:36,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 282 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:17:36,998 INFO L231 Difference]: Finished difference. Result has 38 places, 23 transitions, 140 flow [2023-11-17 15:17:36,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=140, PETRI_PLACES=38, PETRI_TRANSITIONS=23} [2023-11-17 15:17:36,998 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-11-17 15:17:36,999 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 23 transitions, 140 flow [2023-11-17 15:17:36,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:36,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:36,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:36,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:17:36,999 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:36,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:37,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1921642293, now seen corresponding path program 1 times [2023-11-17 15:17:37,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:37,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138624318] [2023-11-17 15:17:37,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:37,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:37,139 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 15:17:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138624318] [2023-11-17 15:17:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138624318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:37,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:37,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:17:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539039612] [2023-11-17 15:17:37,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:37,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:17:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:17:37,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:17:37,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 153 [2023-11-17 15:17:37,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 23 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:37,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:37,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 153 [2023-11-17 15:17:37,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:37,205 INFO L124 PetriNetUnfolderBase]: 23/63 cut-off events. [2023-11-17 15:17:37,206 INFO L125 PetriNetUnfolderBase]: For 148/149 co-relation queries the response was YES. [2023-11-17 15:17:37,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 63 events. 23/63 cut-off events. For 148/149 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 2 based on Foata normal form. 5/67 useless extension candidates. Maximal degree in co-relation 252. Up to 34 conditions per place. [2023-11-17 15:17:37,206 INFO L140 encePairwiseOnDemand]: 147/153 looper letters, 20 selfloop transitions, 10 changer transitions 6/37 dead transitions. [2023-11-17 15:17:37,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 287 flow [2023-11-17 15:17:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:17:37,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:17:37,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 584 transitions. [2023-11-17 15:17:37,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452847805788982 [2023-11-17 15:17:37,208 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 584 transitions. [2023-11-17 15:17:37,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 584 transitions. [2023-11-17 15:17:37,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:37,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 584 transitions. [2023-11-17 15:17:37,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:37,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:37,211 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:37,211 INFO L175 Difference]: Start difference. First operand has 38 places, 23 transitions, 140 flow. Second operand 7 states and 584 transitions. [2023-11-17 15:17:37,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 287 flow [2023-11-17 15:17:37,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 243 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-17 15:17:37,212 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 140 flow [2023-11-17 15:17:37,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2023-11-17 15:17:37,225 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-11-17 15:17:37,225 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 140 flow [2023-11-17 15:17:37,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.33333333333333) internal successors, (482), 6 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:37,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:37,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:37,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:17:37,226 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:37,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:37,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1451615517, now seen corresponding path program 1 times [2023-11-17 15:17:37,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:37,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880706729] [2023-11-17 15:17:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:37,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:37,299 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 15:17:37,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:37,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880706729] [2023-11-17 15:17:37,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880706729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:37,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:37,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:37,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246135597] [2023-11-17 15:17:37,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:37,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:37,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:37,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:37,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:37,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 153 [2023-11-17 15:17:37,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:37,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:37,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 153 [2023-11-17 15:17:37,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:37,329 INFO L124 PetriNetUnfolderBase]: 19/53 cut-off events. [2023-11-17 15:17:37,329 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-17 15:17:37,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 53 events. 19/53 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 5 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 201. Up to 27 conditions per place. [2023-11-17 15:17:37,329 INFO L140 encePairwiseOnDemand]: 150/153 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-11-17 15:17:37,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 28 transitions, 218 flow [2023-11-17 15:17:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:37,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 344 transitions. [2023-11-17 15:17:37,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5620915032679739 [2023-11-17 15:17:37,331 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 344 transitions. [2023-11-17 15:17:37,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 344 transitions. [2023-11-17 15:17:37,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:37,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 344 transitions. [2023-11-17 15:17:37,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:37,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:37,333 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:37,333 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 140 flow. Second operand 4 states and 344 transitions. [2023-11-17 15:17:37,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 28 transitions, 218 flow [2023-11-17 15:17:37,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 178 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-17 15:17:37,334 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-11-17 15:17:37,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-11-17 15:17:37,334 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-17 15:17:37,334 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-11-17 15:17:37,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:37,336 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:17:37,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:17:37,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:17:37,337 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:17:37,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:17:37,337 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:37,339 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:17:37,339 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:17:37,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:17:37 BasicIcfg [2023-11-17 15:17:37,341 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:17:37,341 INFO L158 Benchmark]: Toolchain (without parser) took 5220.86ms. Allocated memory was 321.9MB in the beginning and 414.2MB in the end (delta: 92.3MB). Free memory was 268.4MB in the beginning and 281.2MB in the end (delta: -12.9MB). Peak memory consumption was 80.0MB. Max. memory is 8.0GB. [2023-11-17 15:17:37,342 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory was 156.2MB in the beginning and 156.1MB in the end (delta: 85.6kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:17:37,342 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.75ms. Allocated memory is still 321.9MB. Free memory was 268.4MB in the beginning and 247.9MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:17:37,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.91ms. Allocated memory is still 321.9MB. Free memory was 247.9MB in the beginning and 245.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:17:37,342 INFO L158 Benchmark]: Boogie Preprocessor took 17.87ms. Allocated memory is still 321.9MB. Free memory was 245.8MB in the beginning and 244.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:17:37,342 INFO L158 Benchmark]: RCFGBuilder took 372.07ms. Allocated memory is still 321.9MB. Free memory was 244.2MB in the beginning and 230.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 15:17:37,343 INFO L158 Benchmark]: TraceAbstraction took 4414.58ms. Allocated memory was 321.9MB in the beginning and 414.2MB in the end (delta: 92.3MB). Free memory was 230.1MB in the beginning and 281.2MB in the end (delta: -51.1MB). Peak memory consumption was 42.2MB. Max. memory is 8.0GB. [2023-11-17 15:17:37,343 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 207.6MB. Free memory was 156.2MB in the beginning and 156.1MB in the end (delta: 85.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 367.75ms. Allocated memory is still 321.9MB. Free memory was 268.4MB in the beginning and 247.9MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.91ms. Allocated memory is still 321.9MB. Free memory was 247.9MB in the beginning and 245.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.87ms. Allocated memory is still 321.9MB. Free memory was 245.8MB in the beginning and 244.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 372.07ms. Allocated memory is still 321.9MB. Free memory was 244.2MB in the beginning and 230.6MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4414.58ms. Allocated memory was 321.9MB in the beginning and 414.2MB in the end (delta: 92.3MB). Free memory was 230.1MB in the beginning and 281.2MB in the end (delta: -51.1MB). Peak memory consumption was 42.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 83 PlacesBefore, 27 PlacesAfterwards, 74 TransitionsBefore, 17 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 61 TotalNumberOfCompositions, 2221 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1316, independent: 1240, independent conditional: 0, independent unconditional: 1240, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 934, independent: 885, independent conditional: 0, independent unconditional: 885, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 934, independent: 877, independent conditional: 0, independent unconditional: 877, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 57, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 95, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1316, independent: 355, independent conditional: 0, independent unconditional: 355, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 934, unknown conditional: 0, unknown unconditional: 934] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, 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, 118 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: 4.3s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 197 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 197 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 548 IncrementalHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 7 mSDtfsCounter, 548 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=5, InterpolantAutomatonStates: 53, 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, 1.2s InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 15:17:37,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...