/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/safe012_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:18:19,927 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:18:19,984 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 15:18:20,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:18:20,014 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:18:20,015 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:18:20,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:18:20,015 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:18:20,016 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:18:20,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:18:20,019 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:18:20,019 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:18:20,019 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:18:20,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:18:20,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:18:20,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:18:20,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:18:20,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:18:20,021 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:18:20,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:18:20,021 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:18:20,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:18:20,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:18:20,022 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:18:20,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:18:20,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:18:20,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:18:20,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:18:20,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:18:20,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:18:20,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:18:20,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:18:20,024 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:18:20,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:18:20,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:18:20,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:18:20,223 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:18:20,224 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:18:20,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2023-11-17 15:18:21,199 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:18:21,380 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:18:21,380 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_tso.i [2023-11-17 15:18:21,393 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7f06a938/d830da43b14a46ffbb63e7ddef5b6def/FLAG3d40d8218 [2023-11-17 15:18:21,404 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7f06a938/d830da43b14a46ffbb63e7ddef5b6def [2023-11-17 15:18:21,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:18:21,407 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:18:21,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:18:21,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:18:21,411 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:18:21,411 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf885fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21, skipping insertion in model container [2023-11-17 15:18:21,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,450 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:18:21,555 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/safe012_tso.i[945,958] [2023-11-17 15:18:21,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:18:21,659 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:18:21,670 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/safe012_tso.i[945,958] [2023-11-17 15:18:21,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:18:21,722 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:18:21,722 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:18:21,727 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:18:21,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21 WrapperNode [2023-11-17 15:18:21,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:18:21,728 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:18:21,728 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:18:21,728 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:18:21,733 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,741 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,754 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-17 15:18:21,754 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:18:21,754 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:18:21,754 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:18:21,755 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:18:21,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,762 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,762 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,772 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:18:21,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:18:21,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:18:21,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:18:21,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (1/1) ... [2023-11-17 15:18:21,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:18:21,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:18:21,792 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 15:18:21,801 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 15:18:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:18:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:18:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:18:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:18:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:18:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:18:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:18:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:18:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:18:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:18:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:18:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:18:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:18:21,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:18:21,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:18:21,817 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 15:18:21,912 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:18:21,914 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:18:22,045 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:18:22,053 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:18:22,054 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:18:22,055 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:18:22 BoogieIcfgContainer [2023-11-17 15:18:22,055 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:18:22,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:18:22,056 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:18:22,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:18:22,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:18:21" (1/3) ... [2023-11-17 15:18:22,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3b9cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:18:22, skipping insertion in model container [2023-11-17 15:18:22,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:21" (2/3) ... [2023-11-17 15:18:22,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a3b9cc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:18:22, skipping insertion in model container [2023-11-17 15:18:22,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:18:22" (3/3) ... [2023-11-17 15:18:22,060 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_tso.i [2023-11-17 15:18:22,071 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:18:22,071 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:18:22,071 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:18:22,108 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:18:22,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 198 flow [2023-11-17 15:18:22,177 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-11-17 15:18:22,177 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:22,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-11-17 15:18:22,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 198 flow [2023-11-17 15:18:22,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2023-11-17 15:18:22,203 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:18:22,216 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 159 flow [2023-11-17 15:18:22,218 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 159 flow [2023-11-17 15:18:22,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 159 flow [2023-11-17 15:18:22,233 INFO L124 PetriNetUnfolderBase]: 1/75 cut-off events. [2023-11-17 15:18:22,233 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:22,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-11-17 15:18:22,235 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-11-17 15:18:23,862 INFO L134 LiptonReduction]: Checked pairs total: 2077 [2023-11-17 15:18:23,863 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-11-17 15:18:23,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:18:23,877 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;@183dbd70, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:18:23,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:18:23,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:18:23,881 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-17 15:18:23,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:23,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:23,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:23,882 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 15:18:23,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash -183896116, now seen corresponding path program 1 times [2023-11-17 15:18:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916804396] [2023-11-17 15:18:23,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:23,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:24,270 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 15:18:24,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:24,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916804396] [2023-11-17 15:18:24,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916804396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:24,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:24,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:18:24,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326744477] [2023-11-17 15:18:24,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:24,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:24,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:24,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:24,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 157 [2023-11-17 15:18:24,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:24,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:24,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 157 [2023-11-17 15:18:24,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:24,425 INFO L124 PetriNetUnfolderBase]: 412/641 cut-off events. [2023-11-17 15:18:24,425 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-17 15:18:24,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 641 events. 412/641 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2326 event pairs, 133 based on Foata normal form. 4/645 useless extension candidates. Maximal degree in co-relation 1318. Up to 614 conditions per place. [2023-11-17 15:18:24,436 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 24 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2023-11-17 15:18:24,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 123 flow [2023-11-17 15:18:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:24,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-11-17 15:18:24,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5732484076433121 [2023-11-17 15:18:24,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-11-17 15:18:24,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-11-17 15:18:24,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:24,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-11-17 15:18:24,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:24,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:18:24,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:18:24,455 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 270 transitions. [2023-11-17 15:18:24,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 123 flow [2023-11-17 15:18:24,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:18:24,457 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-11-17 15:18:24,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, 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 15:18:24,461 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 15:18:24,461 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-11-17 15:18:24,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:24,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:24,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:24,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:18:24,462 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 15:18:24,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:24,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1405813013, now seen corresponding path program 1 times [2023-11-17 15:18:24,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:24,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268081668] [2023-11-17 15:18:24,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:24,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:24,626 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 15:18:24,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268081668] [2023-11-17 15:18:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268081668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:24,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:24,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:24,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540359209] [2023-11-17 15:18:24,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:24,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:24,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:24,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:24,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:24,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 157 [2023-11-17 15:18:24,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 15:18:24,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:24,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 157 [2023-11-17 15:18:24,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:24,735 INFO L124 PetriNetUnfolderBase]: 464/725 cut-off events. [2023-11-17 15:18:24,735 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2023-11-17 15:18:24,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 725 events. 464/725 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2753 event pairs, 72 based on Foata normal form. 16/741 useless extension candidates. Maximal degree in co-relation 1662. Up to 329 conditions per place. [2023-11-17 15:18:24,739 INFO L140 encePairwiseOnDemand]: 151/157 looper letters, 36 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2023-11-17 15:18:24,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 207 flow [2023-11-17 15:18:24,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:18:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:18:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 435 transitions. [2023-11-17 15:18:24,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.554140127388535 [2023-11-17 15:18:24,744 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 435 transitions. [2023-11-17 15:18:24,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 435 transitions. [2023-11-17 15:18:24,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:24,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 435 transitions. [2023-11-17 15:18:24,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.0) internal successors, (435), 5 states have internal predecessors, (435), 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 15:18:24,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 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 15:18:24,749 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 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 15:18:24,749 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 5 states and 435 transitions. [2023-11-17 15:18:24,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 207 flow [2023-11-17 15:18:24,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 44 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:24,751 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 111 flow [2023-11-17 15:18:24,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-11-17 15:18:24,751 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 15:18:24,752 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 111 flow [2023-11-17 15:18:24,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 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 15:18:24,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:24,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:24,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:18:24,754 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 15:18:24,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1405812982, now seen corresponding path program 1 times [2023-11-17 15:18:24,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545495954] [2023-11-17 15:18:24,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:24,850 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 15:18:24,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545495954] [2023-11-17 15:18:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545495954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:24,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:24,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:18:24,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834634687] [2023-11-17 15:18:24,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:24,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:24,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:24,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:24,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:24,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 157 [2023-11-17 15:18:24,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 15:18:24,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:24,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 157 [2023-11-17 15:18:24,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:24,910 INFO L124 PetriNetUnfolderBase]: 364/601 cut-off events. [2023-11-17 15:18:24,910 INFO L125 PetriNetUnfolderBase]: For 462/462 co-relation queries the response was YES. [2023-11-17 15:18:24,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 601 events. 364/601 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2322 event pairs, 111 based on Foata normal form. 12/613 useless extension candidates. Maximal degree in co-relation 1684. Up to 470 conditions per place. [2023-11-17 15:18:24,913 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 27 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-11-17 15:18:24,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 34 transitions, 200 flow [2023-11-17 15:18:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:24,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-11-17 15:18:24,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944798301486199 [2023-11-17 15:18:24,914 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-11-17 15:18:24,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-11-17 15:18:24,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:24,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-11-17 15:18:24,915 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 15:18:24,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:18:24,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:18:24,916 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 111 flow. Second operand 3 states and 280 transitions. [2023-11-17 15:18:24,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 34 transitions, 200 flow [2023-11-17 15:18:24,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 34 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:24,918 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 122 flow [2023-11-17 15:18:24,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-17 15:18:24,919 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-11-17 15:18:24,919 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 122 flow [2023-11-17 15:18:24,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 15:18:24,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:24,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:24,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:18:24,920 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 15:18:24,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:24,920 INFO L85 PathProgramCache]: Analyzing trace with hash -630532799, now seen corresponding path program 1 times [2023-11-17 15:18:24,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:24,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80151181] [2023-11-17 15:18:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:24,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:24,998 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 15:18:24,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:24,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80151181] [2023-11-17 15:18:24,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80151181] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:24,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:24,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:24,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188494606] [2023-11-17 15:18:24,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:24,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:25,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:25,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:25,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:25,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 157 [2023-11-17 15:18:25,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:25,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:25,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 157 [2023-11-17 15:18:25,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:25,052 INFO L124 PetriNetUnfolderBase]: 400/629 cut-off events. [2023-11-17 15:18:25,052 INFO L125 PetriNetUnfolderBase]: For 704/704 co-relation queries the response was YES. [2023-11-17 15:18:25,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 629 events. 400/629 cut-off events. For 704/704 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2214 event pairs, 111 based on Foata normal form. 8/637 useless extension candidates. Maximal degree in co-relation 1876. Up to 470 conditions per place. [2023-11-17 15:18:25,055 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 26 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-11-17 15:18:25,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 30 transitions, 198 flow [2023-11-17 15:18:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:25,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 265 transitions. [2023-11-17 15:18:25,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5626326963906582 [2023-11-17 15:18:25,057 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 265 transitions. [2023-11-17 15:18:25,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 265 transitions. [2023-11-17 15:18:25,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:25,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 265 transitions. [2023-11-17 15:18:25,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 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 15:18:25,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:18:25,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:18:25,058 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 122 flow. Second operand 3 states and 265 transitions. [2023-11-17 15:18:25,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 30 transitions, 198 flow [2023-11-17 15:18:25,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:18:25,061 INFO L231 Difference]: Finished difference. Result has 36 places, 24 transitions, 128 flow [2023-11-17 15:18:25,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=36, PETRI_TRANSITIONS=24} [2023-11-17 15:18:25,062 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-17 15:18:25,062 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 24 transitions, 128 flow [2023-11-17 15:18:25,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:25,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:25,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:25,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:18:25,062 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 15:18:25,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:25,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1166046199, now seen corresponding path program 1 times [2023-11-17 15:18:25,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:25,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894925350] [2023-11-17 15:18:25,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:25,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:18:25,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:25,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894925350] [2023-11-17 15:18:25,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894925350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:25,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:25,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:25,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012327592] [2023-11-17 15:18:25,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:25,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:18:25,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:25,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:18:25,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:18:25,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 157 [2023-11-17 15:18:25,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 24 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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 15:18:25,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:25,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 157 [2023-11-17 15:18:25,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:25,224 INFO L124 PetriNetUnfolderBase]: 439/704 cut-off events. [2023-11-17 15:18:25,224 INFO L125 PetriNetUnfolderBase]: For 1013/1013 co-relation queries the response was YES. [2023-11-17 15:18:25,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054 conditions, 704 events. 439/704 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2632 event pairs, 161 based on Foata normal form. 36/740 useless extension candidates. Maximal degree in co-relation 2036. Up to 274 conditions per place. [2023-11-17 15:18:25,227 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 23 selfloop transitions, 3 changer transitions 11/37 dead transitions. [2023-11-17 15:18:25,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 37 transitions, 236 flow [2023-11-17 15:18:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:25,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:25,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2023-11-17 15:18:25,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493630573248408 [2023-11-17 15:18:25,228 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 345 transitions. [2023-11-17 15:18:25,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 345 transitions. [2023-11-17 15:18:25,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:25,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 345 transitions. [2023-11-17 15:18:25,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 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 15:18:25,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:18:25,230 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:18:25,230 INFO L175 Difference]: Start difference. First operand has 36 places, 24 transitions, 128 flow. Second operand 4 states and 345 transitions. [2023-11-17 15:18:25,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 37 transitions, 236 flow [2023-11-17 15:18:25,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:18:25,233 INFO L231 Difference]: Finished difference. Result has 39 places, 17 transitions, 88 flow [2023-11-17 15:18:25,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=39, PETRI_TRANSITIONS=17} [2023-11-17 15:18:25,233 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-11-17 15:18:25,233 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 17 transitions, 88 flow [2023-11-17 15:18:25,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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 15:18:25,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:25,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:25,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:18:25,234 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 15:18:25,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:25,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1928385307, now seen corresponding path program 1 times [2023-11-17 15:18:25,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:25,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234136585] [2023-11-17 15:18:25,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:25,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:25,328 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 15:18:25,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:25,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234136585] [2023-11-17 15:18:25,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234136585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:25,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:25,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:25,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518203155] [2023-11-17 15:18:25,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:25,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:18:25,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:18:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:18:25,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 157 [2023-11-17 15:18:25,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 17 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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 15:18:25,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:25,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 157 [2023-11-17 15:18:25,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:25,383 INFO L124 PetriNetUnfolderBase]: 187/326 cut-off events. [2023-11-17 15:18:25,383 INFO L125 PetriNetUnfolderBase]: For 978/978 co-relation queries the response was YES. [2023-11-17 15:18:25,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 326 events. 187/326 cut-off events. For 978/978 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1172 event pairs, 77 based on Foata normal form. 24/350 useless extension candidates. Maximal degree in co-relation 986. Up to 117 conditions per place. [2023-11-17 15:18:25,385 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 19 selfloop transitions, 3 changer transitions 11/33 dead transitions. [2023-11-17 15:18:25,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 231 flow [2023-11-17 15:18:25,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2023-11-17 15:18:25,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552547770700637 [2023-11-17 15:18:25,386 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2023-11-17 15:18:25,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2023-11-17 15:18:25,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:25,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2023-11-17 15:18:25,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 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 15:18:25,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:18:25,389 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:18:25,389 INFO L175 Difference]: Start difference. First operand has 39 places, 17 transitions, 88 flow. Second operand 4 states and 347 transitions. [2023-11-17 15:18:25,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 231 flow [2023-11-17 15:18:25,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 33 transitions, 159 flow, removed 14 selfloop flow, removed 12 redundant places. [2023-11-17 15:18:25,391 INFO L231 Difference]: Finished difference. Result has 31 places, 17 transitions, 64 flow [2023-11-17 15:18:25,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=31, PETRI_TRANSITIONS=17} [2023-11-17 15:18:25,393 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-11-17 15:18:25,393 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 17 transitions, 64 flow [2023-11-17 15:18:25,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 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 15:18:25,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:25,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:25,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:18:25,394 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 15:18:25,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:25,394 INFO L85 PathProgramCache]: Analyzing trace with hash -2105371233, now seen corresponding path program 1 times [2023-11-17 15:18:25,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:25,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986592340] [2023-11-17 15:18:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:25,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:25,450 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 15:18:25,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:25,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986592340] [2023-11-17 15:18:25,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986592340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:25,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:25,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:25,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877226207] [2023-11-17 15:18:25,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:25,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:25,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:25,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:25,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:25,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:18:25,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 17 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 15:18:25,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:25,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:18:25,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:25,484 INFO L124 PetriNetUnfolderBase]: 45/97 cut-off events. [2023-11-17 15:18:25,485 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-17 15:18:25,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 97 events. 45/97 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 246 event pairs, 19 based on Foata normal form. 6/99 useless extension candidates. Maximal degree in co-relation 265. Up to 75 conditions per place. [2023-11-17 15:18:25,485 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 20 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2023-11-17 15:18:25,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 25 transitions, 136 flow [2023-11-17 15:18:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-11-17 15:18:25,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5753715498938429 [2023-11-17 15:18:25,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-11-17 15:18:25,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-11-17 15:18:25,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:25,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-11-17 15:18:25,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 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 15:18:25,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:18:25,489 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 15:18:25,489 INFO L175 Difference]: Start difference. First operand has 31 places, 17 transitions, 64 flow. Second operand 3 states and 271 transitions. [2023-11-17 15:18:25,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 25 transitions, 136 flow [2023-11-17 15:18:25,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 25 transitions, 122 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 15:18:25,490 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 78 flow [2023-11-17 15:18:25,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-11-17 15:18:25,490 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-11-17 15:18:25,490 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 78 flow [2023-11-17 15:18:25,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 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 15:18:25,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:25,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:25,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:18:25,491 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 15:18:25,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:25,491 INFO L85 PathProgramCache]: Analyzing trace with hash 937474105, now seen corresponding path program 1 times [2023-11-17 15:18:25,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:25,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508913366] [2023-11-17 15:18:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:25,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:25,566 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 15:18:25,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508913366] [2023-11-17 15:18:25,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508913366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:25,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:25,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:25,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865850059] [2023-11-17 15:18:25,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:25,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:25,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:25,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:25,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:25,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:18:25,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 78 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 15:18:25,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:25,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:18:25,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:25,604 INFO L124 PetriNetUnfolderBase]: 25/65 cut-off events. [2023-11-17 15:18:25,604 INFO L125 PetriNetUnfolderBase]: For 19/25 co-relation queries the response was YES. [2023-11-17 15:18:25,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 65 events. 25/65 cut-off events. For 19/25 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 7 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 198. Up to 32 conditions per place. [2023-11-17 15:18:25,604 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 21 selfloop transitions, 7 changer transitions 0/29 dead transitions. [2023-11-17 15:18:25,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 165 flow [2023-11-17 15:18:25,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:25,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2023-11-17 15:18:25,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684713375796179 [2023-11-17 15:18:25,606 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2023-11-17 15:18:25,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2023-11-17 15:18:25,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:25,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2023-11-17 15:18:25,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:25,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:18:25,608 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 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 15:18:25,608 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 78 flow. Second operand 4 states and 357 transitions. [2023-11-17 15:18:25,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 165 flow [2023-11-17 15:18:25,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:25,610 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 114 flow [2023-11-17 15:18:25,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-11-17 15:18:25,612 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 15:18:25,612 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 114 flow [2023-11-17 15:18:25,612 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 15:18:25,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:25,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:25,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:18:25,613 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:25,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:25,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1003092975, now seen corresponding path program 1 times [2023-11-17 15:18:25,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:25,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421603696] [2023-11-17 15:18:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:25,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:25,706 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 15:18:25,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:25,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421603696] [2023-11-17 15:18:25,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421603696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:25,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:25,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:18:25,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797976253] [2023-11-17 15:18:25,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:25,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:18:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:25,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:18:25,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:18:25,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:18:25,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 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 15:18:25,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:25,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:18:25,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:25,741 INFO L124 PetriNetUnfolderBase]: 17/49 cut-off events. [2023-11-17 15:18:25,741 INFO L125 PetriNetUnfolderBase]: For 55/69 co-relation queries the response was YES. [2023-11-17 15:18:25,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 49 events. 17/49 cut-off events. For 55/69 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 4 based on Foata normal form. 8/56 useless extension candidates. Maximal degree in co-relation 167. Up to 22 conditions per place. [2023-11-17 15:18:25,741 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 18 selfloop transitions, 10 changer transitions 0/29 dead transitions. [2023-11-17 15:18:25,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 189 flow [2023-11-17 15:18:25,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:18:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:18:25,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 439 transitions. [2023-11-17 15:18:25,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592356687898089 [2023-11-17 15:18:25,743 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 439 transitions. [2023-11-17 15:18:25,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 439 transitions. [2023-11-17 15:18:25,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:25,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 439 transitions. [2023-11-17 15:18:25,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.8) internal successors, (439), 5 states have internal predecessors, (439), 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 15:18:25,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 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 15:18:25,745 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 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 15:18:25,745 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 114 flow. Second operand 5 states and 439 transitions. [2023-11-17 15:18:25,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 189 flow [2023-11-17 15:18:25,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 29 transitions, 162 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 15:18:25,746 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 118 flow [2023-11-17 15:18:25,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-11-17 15:18:25,746 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-17 15:18:25,747 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 118 flow [2023-11-17 15:18:25,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 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 15:18:25,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:25,747 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 15:18:25,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:18:25,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:25,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:25,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1902006956, now seen corresponding path program 1 times [2023-11-17 15:18:25,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:25,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384101920] [2023-11-17 15:18:25,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:25,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:25,815 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 15:18:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384101920] [2023-11-17 15:18:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384101920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:25,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:25,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966623410] [2023-11-17 15:18:25,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:25,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:25,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:25,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 157 [2023-11-17 15:18:25,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 118 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 15:18:25,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:25,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 157 [2023-11-17 15:18:25,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:25,851 INFO L124 PetriNetUnfolderBase]: 21/55 cut-off events. [2023-11-17 15:18:25,852 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-11-17 15:18:25,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 55 events. 21/55 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 3 based on Foata normal form. 1/56 useless extension candidates. Maximal degree in co-relation 189. Up to 32 conditions per place. [2023-11-17 15:18:25,852 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2023-11-17 15:18:25,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 208 flow [2023-11-17 15:18:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:18:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:18:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2023-11-17 15:18:25,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5235668789808917 [2023-11-17 15:18:25,853 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 411 transitions. [2023-11-17 15:18:25,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 411 transitions. [2023-11-17 15:18:25,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:25,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 411 transitions. [2023-11-17 15:18:25,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 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 15:18:25,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 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 15:18:25,855 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 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 15:18:25,855 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 118 flow. Second operand 5 states and 411 transitions. [2023-11-17 15:18:25,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 208 flow [2023-11-17 15:18:25,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 176 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-17 15:18:25,856 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-11-17 15:18:25,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, 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=34, PETRI_TRANSITIONS=0} [2023-11-17 15:18:25,857 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-17 15:18:25,857 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-11-17 15:18:25,857 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 15:18:25,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:18:25,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:18:25,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:18:25,860 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:18:25,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:18:25,860 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:25,863 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:18:25,863 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:18:25,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:18:25 BasicIcfg [2023-11-17 15:18:25,865 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:18:25,866 INFO L158 Benchmark]: Toolchain (without parser) took 4458.51ms. Allocated memory was 291.5MB in the beginning and 350.2MB in the end (delta: 58.7MB). Free memory was 239.8MB in the beginning and 206.1MB in the end (delta: 33.7MB). Peak memory consumption was 93.8MB. Max. memory is 8.0GB. [2023-11-17 15:18:25,866 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:18:25,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.70ms. Allocated memory is still 291.5MB. Free memory was 239.6MB in the beginning and 219.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-11-17 15:18:25,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.94ms. Allocated memory is still 291.5MB. Free memory was 219.2MB in the beginning and 217.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:18:25,866 INFO L158 Benchmark]: Boogie Preprocessor took 17.27ms. Allocated memory is still 291.5MB. Free memory was 217.2MB in the beginning and 215.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:18:25,866 INFO L158 Benchmark]: RCFGBuilder took 282.61ms. Allocated memory is still 291.5MB. Free memory was 215.7MB in the beginning and 201.9MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 15:18:25,867 INFO L158 Benchmark]: TraceAbstraction took 3809.12ms. Allocated memory was 291.5MB in the beginning and 350.2MB in the end (delta: 58.7MB). Free memory was 201.0MB in the beginning and 206.1MB in the end (delta: -5.0MB). Peak memory consumption was 55.1MB. Max. memory is 8.0GB. [2023-11-17 15:18:25,867 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 132.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 319.70ms. Allocated memory is still 291.5MB. Free memory was 239.6MB in the beginning and 219.2MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 25.94ms. Allocated memory is still 291.5MB. Free memory was 219.2MB in the beginning and 217.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.27ms. Allocated memory is still 291.5MB. Free memory was 217.2MB in the beginning and 215.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 282.61ms. Allocated memory is still 291.5MB. Free memory was 215.7MB in the beginning and 201.9MB in the end (delta: 13.8MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3809.12ms. Allocated memory was 291.5MB in the beginning and 350.2MB in the end (delta: 58.7MB). Free memory was 201.0MB in the beginning and 206.1MB in the end (delta: -5.0MB). Peak memory consumption was 55.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 84 PlacesBefore, 27 PlacesAfterwards, 75 TransitionsBefore, 18 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 64 TotalNumberOfCompositions, 2077 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1470, independent: 1397, independent conditional: 0, independent unconditional: 1397, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 945, independent: 910, independent conditional: 0, independent unconditional: 910, 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: 945, independent: 901, independent conditional: 0, independent unconditional: 901, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 91, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 71, dependent conditional: 0, dependent unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1470, independent: 487, independent conditional: 0, independent unconditional: 487, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 945, unknown conditional: 0, unknown unconditional: 945] , Statistics on independence cache: Total cache size (in pairs): 92, Positive cache size: 80, Positive conditional cache size: 0, Positive unconditional cache size: 80, 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, 119 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: 3.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 126 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 348 IncrementalHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 5 mSDtfsCounter, 348 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 15:18:25,884 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...