/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/safe034_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:19:54,688 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:19:54,776 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 15:19:54,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:19:54,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:19:54,812 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:19:54,812 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:19:54,813 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:19:54,813 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:19:54,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:19:54,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:19:54,818 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:19:54,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:19:54,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:19:54,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:19:54,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:19:54,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:19:54,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:19:54,820 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:19:54,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:19:54,821 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:19:54,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:19:54,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:19:54,822 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:19:54,822 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:19:54,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:19:54,822 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:19:54,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:19:54,823 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:19:54,823 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:19:54,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:19:54,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:19:54,824 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:19:55,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:19:55,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:19:55,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:19:55,085 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:19:55,085 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:19:55,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe034_tso.i [2023-11-17 15:19:56,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:19:56,483 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:19:56,483 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe034_tso.i [2023-11-17 15:19:56,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1121263dc/ab8892bd5e254a6b929b52c88360c698/FLAG04a2baec4 [2023-11-17 15:19:56,509 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1121263dc/ab8892bd5e254a6b929b52c88360c698 [2023-11-17 15:19:56,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:19:56,512 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:19:56,513 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:19:56,513 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:19:56,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:19:56,517 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:19:56" (1/1) ... [2023-11-17 15:19:56,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eafe854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:56, skipping insertion in model container [2023-11-17 15:19:56,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:19:56" (1/1) ... [2023-11-17 15:19:56,572 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:19:56,742 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/safe034_tso.i[945,958] [2023-11-17 15:19:56,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:19:56,929 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:19:56,942 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/safe034_tso.i[945,958] [2023-11-17 15:19:56,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:19:57,019 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:19:57,019 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:19:57,026 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:19:57,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57 WrapperNode [2023-11-17 15:19:57,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:19:57,027 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:19:57,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:19:57,028 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:19:57,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,086 INFO L138 Inliner]: procedures = 176, calls = 57, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-17 15:19:57,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:19:57,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:19:57,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:19:57,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:19:57,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,103 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:19:57,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:19:57,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:19:57,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:19:57,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (1/1) ... [2023-11-17 15:19:57,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:19:57,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:19:57,155 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 15:19:57,180 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 15:19:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:19:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:19:57,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:19:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:19:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:19:57,192 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:19:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:19:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:19:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:19:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:19:57,193 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:19:57,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:19:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:19:57,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:19:57,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:19:57,195 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 15:19:57,331 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:19:57,333 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:19:57,535 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:19:57,544 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:19:57,544 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:19:57,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:19:57 BoogieIcfgContainer [2023-11-17 15:19:57,548 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:19:57,551 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:19:57,551 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:19:57,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:19:57,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:19:56" (1/3) ... [2023-11-17 15:19:57,554 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe0a1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:19:57, skipping insertion in model container [2023-11-17 15:19:57,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:19:57" (2/3) ... [2023-11-17 15:19:57,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe0a1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:19:57, skipping insertion in model container [2023-11-17 15:19:57,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:19:57" (3/3) ... [2023-11-17 15:19:57,556 INFO L112 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2023-11-17 15:19:57,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:19:57,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:19:57,573 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:19:57,633 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:19:57,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 200 flow [2023-11-17 15:19:57,706 INFO L124 PetriNetUnfolderBase]: 2/91 cut-off events. [2023-11-17 15:19:57,706 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:19:57,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-11-17 15:19:57,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 200 flow [2023-11-17 15:19:57,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 76 transitions, 161 flow [2023-11-17 15:19:57,718 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:19:57,729 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 76 transitions, 161 flow [2023-11-17 15:19:57,732 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 76 transitions, 161 flow [2023-11-17 15:19:57,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 76 transitions, 161 flow [2023-11-17 15:19:57,752 INFO L124 PetriNetUnfolderBase]: 1/76 cut-off events. [2023-11-17 15:19:57,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:19:57,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 1/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 50 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-11-17 15:19:57,754 INFO L119 LiptonReduction]: Number of co-enabled transitions 1516 [2023-11-17 15:19:59,657 INFO L134 LiptonReduction]: Checked pairs total: 2160 [2023-11-17 15:19:59,658 INFO L136 LiptonReduction]: Total number of compositions: 62 [2023-11-17 15:19:59,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:19:59,692 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;@79aa857b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:19:59,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:19:59,697 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:19:59,697 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 15:19:59,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:19:59,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:19:59,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:19:59,698 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 15:19:59,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:19:59,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1648669206, now seen corresponding path program 1 times [2023-11-17 15:19:59,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:19:59,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902708756] [2023-11-17 15:19:59,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:19:59,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:19:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:00,116 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 15:20:00,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:00,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902708756] [2023-11-17 15:20:00,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902708756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:00,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:00,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:20:00,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504212724] [2023-11-17 15:20:00,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:00,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:20:00,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:20:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:20:00,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 156 [2023-11-17 15:20:00,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 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 15:20:00,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:00,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 156 [2023-11-17 15:20:00,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:00,256 INFO L124 PetriNetUnfolderBase]: 281/474 cut-off events. [2023-11-17 15:20:00,256 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-17 15:20:00,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 474 events. 281/474 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1891 event pairs, 71 based on Foata normal form. 8/482 useless extension candidates. Maximal degree in co-relation 948. Up to 403 conditions per place. [2023-11-17 15:20:00,262 INFO L140 encePairwiseOnDemand]: 152/156 looper letters, 24 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-11-17 15:20:00,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 125 flow [2023-11-17 15:20:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:20:00,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:20:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-11-17 15:20:00,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5982905982905983 [2023-11-17 15:20:00,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-11-17 15:20:00,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-11-17 15:20:00,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:00,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-11-17 15:20:00,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,289 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 280 transitions. [2023-11-17 15:20:00,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 125 flow [2023-11-17 15:20:00,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 120 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:20:00,293 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-11-17 15:20:00,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, 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=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-11-17 15:20:00,298 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 15:20:00,298 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-11-17 15:20:00,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 15:20:00,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:00,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:00,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:20:00,299 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 15:20:00,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash 430861948, now seen corresponding path program 1 times [2023-11-17 15:20:00,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:00,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742548667] [2023-11-17 15:20:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:00,414 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 15:20:00,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:00,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742548667] [2023-11-17 15:20:00,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742548667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:00,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:00,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:20:00,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050925461] [2023-11-17 15:20:00,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:00,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:20:00,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:00,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:20:00,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:20:00,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 156 [2023-11-17 15:20:00,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:00,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 156 [2023-11-17 15:20:00,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:00,479 INFO L124 PetriNetUnfolderBase]: 191/330 cut-off events. [2023-11-17 15:20:00,479 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-11-17 15:20:00,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 330 events. 191/330 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1169 event pairs, 50 based on Foata normal form. 18/347 useless extension candidates. Maximal degree in co-relation 798. Up to 262 conditions per place. [2023-11-17 15:20:00,483 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 28 selfloop transitions, 4 changer transitions 0/33 dead transitions. [2023-11-17 15:20:00,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 165 flow [2023-11-17 15:20:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:20:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:20:00,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-11-17 15:20:00,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.594017094017094 [2023-11-17 15:20:00,488 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-11-17 15:20:00,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-11-17 15:20:00,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:00,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-11-17 15:20:00,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,492 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,492 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 3 states and 278 transitions. [2023-11-17 15:20:00,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 165 flow [2023-11-17 15:20:00,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:20:00,493 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 82 flow [2023-11-17 15:20:00,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2023-11-17 15:20:00,494 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-11-17 15:20:00,494 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 82 flow [2023-11-17 15:20:00,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:00,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:00,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:20:00,495 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 15:20:00,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:00,496 INFO L85 PathProgramCache]: Analyzing trace with hash 146927991, now seen corresponding path program 1 times [2023-11-17 15:20:00,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:00,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153465135] [2023-11-17 15:20:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:00,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:00,658 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 15:20:00,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:00,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153465135] [2023-11-17 15:20:00,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153465135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:00,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:00,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:20:00,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91724401] [2023-11-17 15:20:00,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:00,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:20:00,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:20:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:20:00,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 156 [2023-11-17 15:20:00,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 82 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:00,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 156 [2023-11-17 15:20:00,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:00,736 INFO L124 PetriNetUnfolderBase]: 111/210 cut-off events. [2023-11-17 15:20:00,736 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-11-17 15:20:00,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 210 events. 111/210 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 665 event pairs, 31 based on Foata normal form. 21/230 useless extension candidates. Maximal degree in co-relation 599. Up to 77 conditions per place. [2023-11-17 15:20:00,739 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 35 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2023-11-17 15:20:00,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 232 flow [2023-11-17 15:20:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:20:00,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:20:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 371 transitions. [2023-11-17 15:20:00,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.594551282051282 [2023-11-17 15:20:00,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 371 transitions. [2023-11-17 15:20:00,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 371 transitions. [2023-11-17 15:20:00,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:00,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 371 transitions. [2023-11-17 15:20:00,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,748 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,748 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 82 flow. Second operand 4 states and 371 transitions. [2023-11-17 15:20:00,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 232 flow [2023-11-17 15:20:00,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 43 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:20:00,750 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 118 flow [2023-11-17 15:20:00,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=118, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-11-17 15:20:00,751 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-17 15:20:00,751 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 118 flow [2023-11-17 15:20:00,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:00,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:00,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:20:00,752 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 15:20:00,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1228209620, now seen corresponding path program 1 times [2023-11-17 15:20:00,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:00,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020192234] [2023-11-17 15:20:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:00,866 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 15:20:00,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:00,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020192234] [2023-11-17 15:20:00,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020192234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:00,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:00,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:20:00,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112800596] [2023-11-17 15:20:00,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:00,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:20:00,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:00,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:20:00,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:20:00,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 156 [2023-11-17 15:20:00,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:00,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:00,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 156 [2023-11-17 15:20:00,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:00,995 INFO L124 PetriNetUnfolderBase]: 215/405 cut-off events. [2023-11-17 15:20:00,995 INFO L125 PetriNetUnfolderBase]: For 409/409 co-relation queries the response was YES. [2023-11-17 15:20:00,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 405 events. 215/405 cut-off events. For 409/409 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1671 event pairs, 2 based on Foata normal form. 10/415 useless extension candidates. Maximal degree in co-relation 1264. Up to 198 conditions per place. [2023-11-17 15:20:00,998 INFO L140 encePairwiseOnDemand]: 149/156 looper letters, 55 selfloop transitions, 13 changer transitions 2/70 dead transitions. [2023-11-17 15:20:00,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 70 transitions, 468 flow [2023-11-17 15:20:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:20:00,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:20:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 441 transitions. [2023-11-17 15:20:01,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5653846153846154 [2023-11-17 15:20:01,000 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 441 transitions. [2023-11-17 15:20:01,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 441 transitions. [2023-11-17 15:20:01,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:01,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 441 transitions. [2023-11-17 15:20:01,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.2) internal successors, (441), 5 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,004 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,004 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 118 flow. Second operand 5 states and 441 transitions. [2023-11-17 15:20:01,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 70 transitions, 468 flow [2023-11-17 15:20:01,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 70 transitions, 426 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-17 15:20:01,008 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 198 flow [2023-11-17 15:20:01,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-11-17 15:20:01,009 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 15:20:01,009 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 198 flow [2023-11-17 15:20:01,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.5) internal successors, (326), 4 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:01,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:20:01,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:20:01,010 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 15:20:01,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:01,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1139148860, now seen corresponding path program 2 times [2023-11-17 15:20:01,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:01,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810194876] [2023-11-17 15:20:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:01,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:01,103 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 15:20:01,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:01,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810194876] [2023-11-17 15:20:01,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810194876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:01,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:01,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:20:01,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990616764] [2023-11-17 15:20:01,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:01,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:20:01,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:20:01,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:20:01,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 156 [2023-11-17 15:20:01,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:01,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 156 [2023-11-17 15:20:01,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:01,177 INFO L124 PetriNetUnfolderBase]: 154/300 cut-off events. [2023-11-17 15:20:01,178 INFO L125 PetriNetUnfolderBase]: For 457/461 co-relation queries the response was YES. [2023-11-17 15:20:01,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1069 conditions, 300 events. 154/300 cut-off events. For 457/461 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1255 event pairs, 26 based on Foata normal form. 22/313 useless extension candidates. Maximal degree in co-relation 1051. Up to 126 conditions per place. [2023-11-17 15:20:01,180 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 38 selfloop transitions, 10 changer transitions 11/62 dead transitions. [2023-11-17 15:20:01,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 62 transitions, 458 flow [2023-11-17 15:20:01,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:20:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:20:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 454 transitions. [2023-11-17 15:20:01,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5820512820512821 [2023-11-17 15:20:01,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 454 transitions. [2023-11-17 15:20:01,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 454 transitions. [2023-11-17 15:20:01,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:01,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 454 transitions. [2023-11-17 15:20:01,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.8) internal successors, (454), 5 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,186 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 198 flow. Second operand 5 states and 454 transitions. [2023-11-17 15:20:01,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 62 transitions, 458 flow [2023-11-17 15:20:01,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 450 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-17 15:20:01,189 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 206 flow [2023-11-17 15:20:01,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-11-17 15:20:01,190 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-11-17 15:20:01,190 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 206 flow [2023-11-17 15:20:01,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.6) internal successors, (428), 5 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:01,191 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 15:20:01,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:20:01,191 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 15:20:01,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:01,192 INFO L85 PathProgramCache]: Analyzing trace with hash -943162826, now seen corresponding path program 1 times [2023-11-17 15:20:01,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:01,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570861218] [2023-11-17 15:20:01,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:01,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:01,336 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 15:20:01,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:01,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570861218] [2023-11-17 15:20:01,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570861218] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:01,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:01,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:20:01,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182985369] [2023-11-17 15:20:01,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:01,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:20:01,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:01,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:20:01,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:20:01,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 156 [2023-11-17 15:20:01,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:01,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 156 [2023-11-17 15:20:01,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:01,472 INFO L124 PetriNetUnfolderBase]: 199/393 cut-off events. [2023-11-17 15:20:01,472 INFO L125 PetriNetUnfolderBase]: For 771/771 co-relation queries the response was YES. [2023-11-17 15:20:01,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1568 conditions, 393 events. 199/393 cut-off events. For 771/771 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1730 event pairs, 6 based on Foata normal form. 1/394 useless extension candidates. Maximal degree in co-relation 1547. Up to 142 conditions per place. [2023-11-17 15:20:01,475 INFO L140 encePairwiseOnDemand]: 149/156 looper letters, 40 selfloop transitions, 9 changer transitions 30/79 dead transitions. [2023-11-17 15:20:01,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 79 transitions, 648 flow [2023-11-17 15:20:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:20:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:20:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 523 transitions. [2023-11-17 15:20:01,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587606837606838 [2023-11-17 15:20:01,477 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 523 transitions. [2023-11-17 15:20:01,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 523 transitions. [2023-11-17 15:20:01,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:01,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 523 transitions. [2023-11-17 15:20:01,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 87.16666666666667) internal successors, (523), 6 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,480 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,481 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 206 flow. Second operand 6 states and 523 transitions. [2023-11-17 15:20:01,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 79 transitions, 648 flow [2023-11-17 15:20:01,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 79 transitions, 562 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-11-17 15:20:01,485 INFO L231 Difference]: Finished difference. Result has 46 places, 29 transitions, 177 flow [2023-11-17 15:20:01,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=177, PETRI_PLACES=46, PETRI_TRANSITIONS=29} [2023-11-17 15:20:01,486 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-11-17 15:20:01,486 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 29 transitions, 177 flow [2023-11-17 15:20:01,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 81.4) internal successors, (407), 5 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:01,487 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 15:20:01,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:20:01,487 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 15:20:01,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:01,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1191853434, now seen corresponding path program 2 times [2023-11-17 15:20:01,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:01,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309636243] [2023-11-17 15:20:01,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:01,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:01,575 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 15:20:01,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:01,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309636243] [2023-11-17 15:20:01,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309636243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:01,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:01,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:20:01,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376558896] [2023-11-17 15:20:01,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:01,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:20:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:01,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:20:01,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:20:01,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 156 [2023-11-17 15:20:01,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 29 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:01,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 156 [2023-11-17 15:20:01,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:01,653 INFO L124 PetriNetUnfolderBase]: 118/265 cut-off events. [2023-11-17 15:20:01,653 INFO L125 PetriNetUnfolderBase]: For 614/616 co-relation queries the response was YES. [2023-11-17 15:20:01,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 265 events. 118/265 cut-off events. For 614/616 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1101 event pairs, 65 based on Foata normal form. 1/259 useless extension candidates. Maximal degree in co-relation 1034. Up to 167 conditions per place. [2023-11-17 15:20:01,655 INFO L140 encePairwiseOnDemand]: 153/156 looper letters, 21 selfloop transitions, 2 changer transitions 19/43 dead transitions. [2023-11-17 15:20:01,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 344 flow [2023-11-17 15:20:01,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:20:01,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:20:01,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 276 transitions. [2023-11-17 15:20:01,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2023-11-17 15:20:01,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 276 transitions. [2023-11-17 15:20:01,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 276 transitions. [2023-11-17 15:20:01,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:01,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 276 transitions. [2023-11-17 15:20:01,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.0) internal successors, (276), 3 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,659 INFO L175 Difference]: Start difference. First operand has 46 places, 29 transitions, 177 flow. Second operand 3 states and 276 transitions. [2023-11-17 15:20:01,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 344 flow [2023-11-17 15:20:01,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 318 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 15:20:01,662 INFO L231 Difference]: Finished difference. Result has 43 places, 23 transitions, 125 flow [2023-11-17 15:20:01,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=43, PETRI_TRANSITIONS=23} [2023-11-17 15:20:01,663 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-11-17 15:20:01,663 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 23 transitions, 125 flow [2023-11-17 15:20:01,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:20:01,665 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 15:20:01,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:20:01,670 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 15:20:01,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:20:01,670 INFO L85 PathProgramCache]: Analyzing trace with hash -528727108, now seen corresponding path program 3 times [2023-11-17 15:20:01,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:20:01,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879909339] [2023-11-17 15:20:01,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:20:01,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:20:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:20:01,792 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 15:20:01,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:20:01,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879909339] [2023-11-17 15:20:01,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879909339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:20:01,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:20:01,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:20:01,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925553673] [2023-11-17 15:20:01,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:20:01,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:20:01,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:20:01,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:20:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:20:01,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 156 [2023-11-17 15:20:01,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 23 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:20:01,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 156 [2023-11-17 15:20:01,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:20:01,833 INFO L124 PetriNetUnfolderBase]: 18/52 cut-off events. [2023-11-17 15:20:01,834 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-11-17 15:20:01,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 52 events. 18/52 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 109 event pairs, 4 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 189. Up to 26 conditions per place. [2023-11-17 15:20:01,834 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-11-17 15:20:01,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 26 transitions, 195 flow [2023-11-17 15:20:01,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:20:01,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:20:01,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 409 transitions. [2023-11-17 15:20:01,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243589743589744 [2023-11-17 15:20:01,836 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 409 transitions. [2023-11-17 15:20:01,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 409 transitions. [2023-11-17 15:20:01,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:20:01,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 409 transitions. [2023-11-17 15:20:01,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.8) internal successors, (409), 5 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,839 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,839 INFO L175 Difference]: Start difference. First operand has 43 places, 23 transitions, 125 flow. Second operand 5 states and 409 transitions. [2023-11-17 15:20:01,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 26 transitions, 195 flow [2023-11-17 15:20:01,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 171 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-11-17 15:20:01,840 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-11-17 15:20:01,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-11-17 15:20:01,840 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-17 15:20:01,841 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-11-17 15:20:01,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:20:01,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:20:01,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:20:01,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:20:01,844 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:20:01,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:20:01,844 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2023-11-17 15:20:01,847 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:20:01,847 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:20:01,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:20:01 BasicIcfg [2023-11-17 15:20:01,851 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:20:01,851 INFO L158 Benchmark]: Toolchain (without parser) took 5339.61ms. Allocated memory was 202.4MB in the beginning and 278.9MB in the end (delta: 76.5MB). Free memory was 147.1MB in the beginning and 204.0MB in the end (delta: -56.9MB). Peak memory consumption was 20.3MB. Max. memory is 8.0GB. [2023-11-17 15:20:01,851 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 202.4MB. Free memory is still 156.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:20:01,852 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.55ms. Allocated memory is still 202.4MB. Free memory was 146.8MB in the beginning and 126.5MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 15:20:01,852 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.04ms. Allocated memory is still 202.4MB. Free memory was 126.5MB in the beginning and 124.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:20:01,852 INFO L158 Benchmark]: Boogie Preprocessor took 29.63ms. Allocated memory is still 202.4MB. Free memory was 124.4MB in the beginning and 123.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:20:01,853 INFO L158 Benchmark]: RCFGBuilder took 431.14ms. Allocated memory was 202.4MB in the beginning and 278.9MB in the end (delta: 76.5MB). Free memory was 123.0MB in the beginning and 244.4MB in the end (delta: -121.3MB). Peak memory consumption was 16.1MB. Max. memory is 8.0GB. [2023-11-17 15:20:01,853 INFO L158 Benchmark]: TraceAbstraction took 4300.15ms. Allocated memory is still 278.9MB. Free memory was 243.8MB in the beginning and 204.0MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-11-17 15:20:01,854 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 202.4MB. Free memory is still 156.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 513.55ms. Allocated memory is still 202.4MB. Free memory was 146.8MB in the beginning and 126.5MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.04ms. Allocated memory is still 202.4MB. Free memory was 126.5MB in the beginning and 124.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.63ms. Allocated memory is still 202.4MB. Free memory was 124.4MB in the beginning and 123.0MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 431.14ms. Allocated memory was 202.4MB in the beginning and 278.9MB in the end (delta: 76.5MB). Free memory was 123.0MB in the beginning and 244.4MB in the end (delta: -121.3MB). Peak memory consumption was 16.1MB. Max. memory is 8.0GB. * TraceAbstraction took 4300.15ms. Allocated memory is still 278.9MB. Free memory was 243.8MB in the beginning and 204.0MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 85 PlacesBefore, 27 PlacesAfterwards, 76 TransitionsBefore, 17 TransitionsAfterwards, 1516 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 62 TotalNumberOfCompositions, 2160 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1500, independent: 1418, independent conditional: 0, independent unconditional: 1418, dependent: 82, dependent conditional: 0, dependent unconditional: 82, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1048, independent: 1013, independent conditional: 0, independent unconditional: 1013, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1048, independent: 1005, independent conditional: 0, independent unconditional: 1005, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 43, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 112, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1500, independent: 405, independent conditional: 0, independent unconditional: 405, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 1048, unknown conditional: 0, unknown unconditional: 1048] , Statistics on independence cache: Total cache size (in pairs): 78, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, 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, 122 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: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 374 IncrementalHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 5 mSDtfsCounter, 374 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=5, InterpolantAutomatonStates: 34, 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, 1.0s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 359 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:20:01,877 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...