/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:56:53,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:56:53,950 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-NoLbe.epf [2023-12-09 14:56:53,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:56:53,976 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:56:53,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:56:53,977 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:56:53,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:56:53,978 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:56:53,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:56:53,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:56:53,981 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:56:53,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:56:53,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:56:53,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:56:53,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:56:53,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:56:53,983 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:56:53,983 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:56:53,984 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:56:53,984 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:56:53,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:56:53,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:56:53,985 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:56:53,985 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:56:53,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:56:53,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:56:53,986 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:56:53,986 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:56:53,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:56:53,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:56:53,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:56:53,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:56:53,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:56:54,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:56:54,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:56:54,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:56:54,218 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:56:54,218 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:56:54,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-12-09 14:56:55,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:56:55,642 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:56:55,642 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-12-09 14:56:55,661 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62c0f9ed/009df3c8ece84545a757eb644489214e/FLAG17c3a9568 [2023-12-09 14:56:55,672 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e62c0f9ed/009df3c8ece84545a757eb644489214e [2023-12-09 14:56:55,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:56:55,675 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:56:55,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:56:55,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:56:55,679 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:56:55,680 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:56:55" (1/1) ... [2023-12-09 14:56:55,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22cdea5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:55, skipping insertion in model container [2023-12-09 14:56:55,681 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:56:55" (1/1) ... [2023-12-09 14:56:55,735 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:56:55,889 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/safe005_tso.i[945,958] [2023-12-09 14:56:56,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:56:56,042 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:56:56,052 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/safe005_tso.i[945,958] [2023-12-09 14:56:56,085 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:56:56,109 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:56:56,109 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:56:56,114 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:56:56,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56 WrapperNode [2023-12-09 14:56:56,115 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:56:56,116 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:56:56,116 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:56:56,116 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:56:56,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,150 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-12-09 14:56:56,150 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:56:56,154 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:56:56,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:56:56,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:56:56,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,169 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,171 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,173 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,174 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:56:56,175 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:56:56,175 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:56:56,175 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:56:56,176 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (1/1) ... [2023-12-09 14:56:56,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:56:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:56:56,209 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) [2023-12-09 14:56:56,214 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 [2023-12-09 14:56:56,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:56:56,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:56:56,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:56:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:56:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:56:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-12-09 14:56:56,233 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-12-09 14:56:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-12-09 14:56:56,233 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-12-09 14:56:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-12-09 14:56:56,233 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-12-09 14:56:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:56:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:56:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:56:56,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:56:56,234 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:56:56,340 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:56:56,342 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:56:56,481 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:56:56,488 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:56:56,488 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-09 14:56:56,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:56:56 BoogieIcfgContainer [2023-12-09 14:56:56,490 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:56:56,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:56:56,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:56:56,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:56:56,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:56:55" (1/3) ... [2023-12-09 14:56:56,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d86b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:56:56, skipping insertion in model container [2023-12-09 14:56:56,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:56:56" (2/3) ... [2023-12-09 14:56:56,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d86b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:56:56, skipping insertion in model container [2023-12-09 14:56:56,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:56:56" (3/3) ... [2023-12-09 14:56:56,496 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2023-12-09 14:56:56,508 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:56:56,508 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:56:56,509 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:56:56,550 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:56:56,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 198 flow [2023-12-09 14:56:56,613 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-12-09 14:56:56,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:56:56,621 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 56 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-12-09 14:56:56,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 198 flow [2023-12-09 14:56:56,623 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2023-12-09 14:56:56,638 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:56:56,652 INFO L362 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=true, 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;@2f40825b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:56:56,653 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 14:56:56,677 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:56:56,677 INFO L124 PetriNetUnfolderBase]: 1/74 cut-off events. [2023-12-09 14:56:56,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:56:56,678 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:56:56,684 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:56:56,685 INFO L425 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)] === [2023-12-09 14:56:56,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:56:56,689 INFO L85 PathProgramCache]: Analyzing trace with hash -510779156, now seen corresponding path program 1 times [2023-12-09 14:56:56,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:56:56,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070323423] [2023-12-09 14:56:56,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:56:56,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:56:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:56:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:56:57,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:56:57,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070323423] [2023-12-09 14:56:57,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070323423] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:56:57,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:56:57,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:56:57,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827500448] [2023-12-09 14:56:57,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:56:57,338 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:56:57,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:56:57,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:56:57,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:56:57,367 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2023-12-09 14:56:57,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 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) [2023-12-09 14:56:57,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:56:57,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2023-12-09 14:56:57,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:56:57,715 INFO L124 PetriNetUnfolderBase]: 290/830 cut-off events. [2023-12-09 14:56:57,716 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-12-09 14:56:57,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1359 conditions, 830 events. 290/830 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5151 event pairs, 11 based on Foata normal form. 35/834 useless extension candidates. Maximal degree in co-relation 1325. Up to 110 conditions per place. [2023-12-09 14:56:57,726 INFO L140 encePairwiseOnDemand]: 82/93 looper letters, 21 selfloop transitions, 6 changer transitions 45/128 dead transitions. [2023-12-09 14:56:57,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 409 flow [2023-12-09 14:56:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:56:57,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:56:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 975 transitions. [2023-12-09 14:56:57,745 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8064516129032258 [2023-12-09 14:56:57,745 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 975 transitions. [2023-12-09 14:56:57,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 975 transitions. [2023-12-09 14:56:57,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:56:57,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 975 transitions. [2023-12-09 14:56:57,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.0) internal successors, (975), 13 states have internal predecessors, (975), 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) [2023-12-09 14:56:57,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2023-12-09 14:56:57,762 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2023-12-09 14:56:57,767 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 12 predicate places. [2023-12-09 14:56:57,767 INFO L500 AbstractCegarLoop]: Abstraction has has 96 places, 128 transitions, 409 flow [2023-12-09 14:56:57,768 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 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) [2023-12-09 14:56:57,768 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:56:57,768 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:56:57,769 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:56:57,769 INFO L425 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)] === [2023-12-09 14:56:57,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:56:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1922811762, now seen corresponding path program 1 times [2023-12-09 14:56:57,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:56:57,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608900297] [2023-12-09 14:56:57,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:56:57,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:56:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:56:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:56:58,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:56:58,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608900297] [2023-12-09 14:56:58,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608900297] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:56:58,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:56:58,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 14:56:58,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452323848] [2023-12-09 14:56:58,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:56:58,072 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 14:56:58,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:56:58,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 14:56:58,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-09 14:56:58,074 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2023-12-09 14:56:58,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 128 transitions, 409 flow. Second operand has 8 states, 8 states have (on average 70.875) internal successors, (567), 8 states have internal predecessors, (567), 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) [2023-12-09 14:56:58,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:56:58,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2023-12-09 14:56:58,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:56:58,393 INFO L124 PetriNetUnfolderBase]: 382/1083 cut-off events. [2023-12-09 14:56:58,394 INFO L125 PetriNetUnfolderBase]: For 100/1688 co-relation queries the response was YES. [2023-12-09 14:56:58,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 1083 events. 382/1083 cut-off events. For 100/1688 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 7467 event pairs, 2 based on Foata normal form. 19/1064 useless extension candidates. Maximal degree in co-relation 2472. Up to 174 conditions per place. [2023-12-09 14:56:58,399 INFO L140 encePairwiseOnDemand]: 82/93 looper letters, 22 selfloop transitions, 9 changer transitions 135/222 dead transitions. [2023-12-09 14:56:58,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 222 transitions, 1123 flow [2023-12-09 14:56:58,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-09 14:56:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-12-09 14:56:58,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1272 transitions. [2023-12-09 14:56:58,402 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8045540796963947 [2023-12-09 14:56:58,402 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1272 transitions. [2023-12-09 14:56:58,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1272 transitions. [2023-12-09 14:56:58,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:56:58,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1272 transitions. [2023-12-09 14:56:58,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 74.82352941176471) internal successors, (1272), 17 states have internal predecessors, (1272), 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) [2023-12-09 14:56:58,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2023-12-09 14:56:58,408 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 93.0) internal successors, (1674), 18 states have internal predecessors, (1674), 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) [2023-12-09 14:56:58,409 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 28 predicate places. [2023-12-09 14:56:58,409 INFO L500 AbstractCegarLoop]: Abstraction has has 112 places, 222 transitions, 1123 flow [2023-12-09 14:56:58,409 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.875) internal successors, (567), 8 states have internal predecessors, (567), 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) [2023-12-09 14:56:58,410 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:56:58,410 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:56:58,410 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:56:58,410 INFO L425 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)] === [2023-12-09 14:56:58,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:56:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1633513069, now seen corresponding path program 1 times [2023-12-09 14:56:58,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:56:58,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651054424] [2023-12-09 14:56:58,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:56:58,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:56:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:56:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:56:58,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:56:58,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651054424] [2023-12-09 14:56:58,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651054424] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:56:58,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:56:58,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:56:58,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296500180] [2023-12-09 14:56:58,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:56:58,707 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:56:58,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:56:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:56:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:56:58,711 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 93 [2023-12-09 14:56:58,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 222 transitions, 1123 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2023-12-09 14:56:58,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:56:58,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 93 [2023-12-09 14:56:58,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:56:58,893 INFO L124 PetriNetUnfolderBase]: 430/1408 cut-off events. [2023-12-09 14:56:58,893 INFO L125 PetriNetUnfolderBase]: For 533/1274 co-relation queries the response was YES. [2023-12-09 14:56:58,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3555 conditions, 1408 events. 430/1408 cut-off events. For 533/1274 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11571 event pairs, 6 based on Foata normal form. 21/1398 useless extension candidates. Maximal degree in co-relation 3510. Up to 226 conditions per place. [2023-12-09 14:56:58,899 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 15 selfloop transitions, 3 changer transitions 200/287 dead transitions. [2023-12-09 14:56:58,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 287 transitions, 1793 flow [2023-12-09 14:56:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:56:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:56:58,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 707 transitions. [2023-12-09 14:56:58,902 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8446833930704899 [2023-12-09 14:56:58,902 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 707 transitions. [2023-12-09 14:56:58,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 707 transitions. [2023-12-09 14:56:58,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:56:58,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 707 transitions. [2023-12-09 14:56:58,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.55555555555556) internal successors, (707), 9 states have internal predecessors, (707), 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) [2023-12-09 14:56:58,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2023-12-09 14:56:58,905 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 93.0) internal successors, (930), 10 states have internal predecessors, (930), 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) [2023-12-09 14:56:58,906 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 36 predicate places. [2023-12-09 14:56:58,906 INFO L500 AbstractCegarLoop]: Abstraction has has 120 places, 287 transitions, 1793 flow [2023-12-09 14:56:58,906 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2023-12-09 14:56:58,906 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:56:58,906 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:56:58,907 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:56:58,907 INFO L425 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)] === [2023-12-09 14:56:58,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:56:58,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1581488364, now seen corresponding path program 1 times [2023-12-09 14:56:58,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:56:58,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734563605] [2023-12-09 14:56:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:56:58,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:56:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:56:59,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:56:59,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:56:59,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734563605] [2023-12-09 14:56:59,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734563605] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:56:59,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:56:59,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 14:56:59,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065304426] [2023-12-09 14:56:59,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:56:59,100 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 14:56:59,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:56:59,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 14:56:59,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-09 14:56:59,102 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2023-12-09 14:56:59,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 287 transitions, 1793 flow. Second operand has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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) [2023-12-09 14:56:59,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:56:59,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2023-12-09 14:56:59,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:56:59,686 INFO L124 PetriNetUnfolderBase]: 593/2506 cut-off events. [2023-12-09 14:56:59,687 INFO L125 PetriNetUnfolderBase]: For 1114/4935 co-relation queries the response was YES. [2023-12-09 14:56:59,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7394 conditions, 2506 events. 593/2506 cut-off events. For 1114/4935 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 26414 event pairs, 7 based on Foata normal form. 104/2577 useless extension candidates. Maximal degree in co-relation 7342. Up to 338 conditions per place. [2023-12-09 14:56:59,697 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 24 selfloop transitions, 7 changer transitions 507/594 dead transitions. [2023-12-09 14:56:59,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 594 transitions, 5129 flow [2023-12-09 14:56:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-09 14:56:59,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-12-09 14:56:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1850 transitions. [2023-12-09 14:56:59,701 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7956989247311828 [2023-12-09 14:56:59,701 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1850 transitions. [2023-12-09 14:56:59,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1850 transitions. [2023-12-09 14:56:59,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:56:59,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1850 transitions. [2023-12-09 14:56:59,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 74.0) internal successors, (1850), 25 states have internal predecessors, (1850), 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) [2023-12-09 14:56:59,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 93.0) internal successors, (2418), 26 states have internal predecessors, (2418), 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) [2023-12-09 14:56:59,712 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 93.0) internal successors, (2418), 26 states have internal predecessors, (2418), 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) [2023-12-09 14:56:59,714 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 60 predicate places. [2023-12-09 14:56:59,714 INFO L500 AbstractCegarLoop]: Abstraction has has 144 places, 594 transitions, 5129 flow [2023-12-09 14:56:59,715 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.125) internal successors, (569), 8 states have internal predecessors, (569), 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) [2023-12-09 14:56:59,715 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:56:59,715 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:56:59,715 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:56:59,715 INFO L425 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)] === [2023-12-09 14:56:59,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:56:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash 989084596, now seen corresponding path program 1 times [2023-12-09 14:56:59,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:56:59,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584508099] [2023-12-09 14:56:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:56:59,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:56:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:56:59,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:56:59,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:56:59,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584508099] [2023-12-09 14:56:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584508099] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:56:59,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:56:59,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:56:59,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150337649] [2023-12-09 14:56:59,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:56:59,851 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:56:59,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:56:59,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:56:59,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:56:59,854 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-12-09 14:56:59,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 594 transitions, 5129 flow. Second operand has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2023-12-09 14:56:59,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:56:59,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-12-09 14:56:59,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:00,635 INFO L124 PetriNetUnfolderBase]: 2757/7589 cut-off events. [2023-12-09 14:57:00,635 INFO L125 PetriNetUnfolderBase]: For 2141/2913 co-relation queries the response was YES. [2023-12-09 14:57:00,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18958 conditions, 7589 events. 2757/7589 cut-off events. For 2141/2913 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 86473 event pairs, 91 based on Foata normal form. 40/7117 useless extension candidates. Maximal degree in co-relation 18902. Up to 2186 conditions per place. [2023-12-09 14:57:00,679 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 22 selfloop transitions, 8 changer transitions 432/551 dead transitions. [2023-12-09 14:57:00,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 551 transitions, 4651 flow [2023-12-09 14:57:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:57:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:57:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 790 transitions. [2023-12-09 14:57:00,683 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2023-12-09 14:57:00,683 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 790 transitions. [2023-12-09 14:57:00,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 790 transitions. [2023-12-09 14:57:00,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:00,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 790 transitions. [2023-12-09 14:57:00,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 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) [2023-12-09 14:57:00,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2023-12-09 14:57:00,689 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2023-12-09 14:57:00,700 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 69 predicate places. [2023-12-09 14:57:00,701 INFO L500 AbstractCegarLoop]: Abstraction has has 153 places, 551 transitions, 4651 flow [2023-12-09 14:57:00,701 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 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) [2023-12-09 14:57:00,701 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:00,701 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:00,701 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:57:00,701 INFO L425 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)] === [2023-12-09 14:57:00,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:00,702 INFO L85 PathProgramCache]: Analyzing trace with hash 128561677, now seen corresponding path program 1 times [2023-12-09 14:57:00,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:00,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632221419] [2023-12-09 14:57:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:00,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:00,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:00,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632221419] [2023-12-09 14:57:00,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632221419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:00,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:00,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:57:00,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759670210] [2023-12-09 14:57:00,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:00,952 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:57:00,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:00,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:57:00,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:57:00,954 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-12-09 14:57:00,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 551 transitions, 4651 flow. Second operand has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2023-12-09 14:57:00,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:00,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-12-09 14:57:00,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:01,666 INFO L124 PetriNetUnfolderBase]: 2023/5582 cut-off events. [2023-12-09 14:57:01,666 INFO L125 PetriNetUnfolderBase]: For 1732/4324 co-relation queries the response was YES. [2023-12-09 14:57:01,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15554 conditions, 5582 events. 2023/5582 cut-off events. For 1732/4324 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 61225 event pairs, 9 based on Foata normal form. 497/5745 useless extension candidates. Maximal degree in co-relation 15494. Up to 1732 conditions per place. [2023-12-09 14:57:01,703 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 22 selfloop transitions, 11 changer transitions 334/437 dead transitions. [2023-12-09 14:57:01,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 437 transitions, 3588 flow [2023-12-09 14:57:01,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:57:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:57:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1027 transitions. [2023-12-09 14:57:01,706 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2023-12-09 14:57:01,706 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1027 transitions. [2023-12-09 14:57:01,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1027 transitions. [2023-12-09 14:57:01,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:01,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1027 transitions. [2023-12-09 14:57:01,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 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) [2023-12-09 14:57:01,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2023-12-09 14:57:01,710 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 93.0) internal successors, (1302), 14 states have internal predecessors, (1302), 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) [2023-12-09 14:57:01,711 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 78 predicate places. [2023-12-09 14:57:01,711 INFO L500 AbstractCegarLoop]: Abstraction has has 162 places, 437 transitions, 3588 flow [2023-12-09 14:57:01,711 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2023-12-09 14:57:01,711 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:01,712 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:01,712 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:57:01,712 INFO L425 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)] === [2023-12-09 14:57:01,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:01,712 INFO L85 PathProgramCache]: Analyzing trace with hash 500316432, now seen corresponding path program 1 times [2023-12-09 14:57:01,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:01,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596870461] [2023-12-09 14:57:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:01,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:01,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596870461] [2023-12-09 14:57:01,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596870461] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:01,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:01,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 14:57:01,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898909414] [2023-12-09 14:57:01,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:01,889 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 14:57:01,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:01,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 14:57:01,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-09 14:57:01,890 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-12-09 14:57:01,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 437 transitions, 3588 flow. Second operand has 8 states, 8 states have (on average 75.75) internal successors, (606), 8 states have internal predecessors, (606), 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) [2023-12-09 14:57:01,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:01,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-12-09 14:57:01,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:02,473 INFO L124 PetriNetUnfolderBase]: 1816/4736 cut-off events. [2023-12-09 14:57:02,473 INFO L125 PetriNetUnfolderBase]: For 2284/7003 co-relation queries the response was YES. [2023-12-09 14:57:02,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15891 conditions, 4736 events. 1816/4736 cut-off events. For 2284/7003 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 51533 event pairs, 3 based on Foata normal form. 691/5132 useless extension candidates. Maximal degree in co-relation 15827. Up to 1470 conditions per place. [2023-12-09 14:57:02,490 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 16 selfloop transitions, 14 changer transitions 172/270 dead transitions. [2023-12-09 14:57:02,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 270 transitions, 2192 flow [2023-12-09 14:57:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 14:57:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 14:57:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1248 transitions. [2023-12-09 14:57:02,493 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2023-12-09 14:57:02,493 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1248 transitions. [2023-12-09 14:57:02,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1248 transitions. [2023-12-09 14:57:02,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:02,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1248 transitions. [2023-12-09 14:57:02,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.0) internal successors, (1248), 16 states have internal predecessors, (1248), 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) [2023-12-09 14:57:02,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 93.0) internal successors, (1581), 17 states have internal predecessors, (1581), 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) [2023-12-09 14:57:02,498 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 93.0) internal successors, (1581), 17 states have internal predecessors, (1581), 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) [2023-12-09 14:57:02,498 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 69 predicate places. [2023-12-09 14:57:02,499 INFO L500 AbstractCegarLoop]: Abstraction has has 153 places, 270 transitions, 2192 flow [2023-12-09 14:57:02,499 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.75) internal successors, (606), 8 states have internal predecessors, (606), 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) [2023-12-09 14:57:02,499 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:02,499 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:02,499 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 14:57:02,499 INFO L425 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)] === [2023-12-09 14:57:02,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:02,500 INFO L85 PathProgramCache]: Analyzing trace with hash -944265838, now seen corresponding path program 1 times [2023-12-09 14:57:02,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:02,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579293293] [2023-12-09 14:57:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:02,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:02,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:02,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579293293] [2023-12-09 14:57:02,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579293293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:02,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:02,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:57:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723727430] [2023-12-09 14:57:02,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:02,615 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:57:02,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:02,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:57:02,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:57:02,616 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 93 [2023-12-09 14:57:02,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 270 transitions, 2192 flow. Second operand has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2023-12-09 14:57:02,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:02,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 93 [2023-12-09 14:57:02,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:03,104 INFO L124 PetriNetUnfolderBase]: 1806/4597 cut-off events. [2023-12-09 14:57:03,104 INFO L125 PetriNetUnfolderBase]: For 2322/3829 co-relation queries the response was YES. [2023-12-09 14:57:03,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15906 conditions, 4597 events. 1806/4597 cut-off events. For 2322/3829 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 49642 event pairs, 2 based on Foata normal form. 23/4325 useless extension candidates. Maximal degree in co-relation 15835. Up to 1474 conditions per place. [2023-12-09 14:57:03,118 INFO L140 encePairwiseOnDemand]: 83/93 looper letters, 17 selfloop transitions, 3 changer transitions 183/269 dead transitions. [2023-12-09 14:57:03,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 269 transitions, 2410 flow [2023-12-09 14:57:03,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:57:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:57:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 728 transitions. [2023-12-09 14:57:03,120 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7827956989247312 [2023-12-09 14:57:03,120 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 728 transitions. [2023-12-09 14:57:03,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 728 transitions. [2023-12-09 14:57:03,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:03,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 728 transitions. [2023-12-09 14:57:03,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.8) internal successors, (728), 10 states have internal predecessors, (728), 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) [2023-12-09 14:57:03,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2023-12-09 14:57:03,123 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 93.0) internal successors, (1023), 11 states have internal predecessors, (1023), 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) [2023-12-09 14:57:03,124 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 78 predicate places. [2023-12-09 14:57:03,125 INFO L500 AbstractCegarLoop]: Abstraction has has 162 places, 269 transitions, 2410 flow [2023-12-09 14:57:03,125 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2023-12-09 14:57:03,125 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:57:03,125 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:03,125 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 14:57:03,125 INFO L425 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)] === [2023-12-09 14:57:03,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:57:03,126 INFO L85 PathProgramCache]: Analyzing trace with hash 779496914, now seen corresponding path program 2 times [2023-12-09 14:57:03,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:57:03,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054717824] [2023-12-09 14:57:03,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:57:03,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:57:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:57:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:57:03,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:57:03,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054717824] [2023-12-09 14:57:03,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054717824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:57:03,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:57:03,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:57:03,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299825312] [2023-12-09 14:57:03,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:57:03,246 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:57:03,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:57:03,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:57:03,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:57:03,248 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 93 [2023-12-09 14:57:03,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 269 transitions, 2410 flow. Second operand has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2023-12-09 14:57:03,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:57:03,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 93 [2023-12-09 14:57:03,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:57:03,843 INFO L124 PetriNetUnfolderBase]: 2380/6406 cut-off events. [2023-12-09 14:57:03,843 INFO L125 PetriNetUnfolderBase]: For 3611/5257 co-relation queries the response was YES. [2023-12-09 14:57:03,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21648 conditions, 6406 events. 2380/6406 cut-off events. For 3611/5257 co-relation queries the response was YES. Maximal size of possible extension queue 962. Compared 73477 event pairs, 2 based on Foata normal form. 20/6034 useless extension candidates. Maximal degree in co-relation 21572. Up to 1926 conditions per place. [2023-12-09 14:57:03,873 INFO L140 encePairwiseOnDemand]: 87/93 looper letters, 0 selfloop transitions, 0 changer transitions 296/296 dead transitions. [2023-12-09 14:57:03,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 296 transitions, 3034 flow [2023-12-09 14:57:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 14:57:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 14:57:03,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2023-12-09 14:57:03,875 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.82642089093702 [2023-12-09 14:57:03,875 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2023-12-09 14:57:03,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2023-12-09 14:57:03,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:57:03,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2023-12-09 14:57:03,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 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) [2023-12-09 14:57:03,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2023-12-09 14:57:03,878 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 93.0) internal successors, (744), 8 states have internal predecessors, (744), 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) [2023-12-09 14:57:03,878 INFO L308 CegarLoopForPetriNet]: 84 programPoint places, 82 predicate places. [2023-12-09 14:57:03,879 INFO L500 AbstractCegarLoop]: Abstraction has has 166 places, 296 transitions, 3034 flow [2023-12-09 14:57:03,879 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.85714285714286) internal successors, (531), 7 states have internal predecessors, (531), 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) [2023-12-09 14:57:03,885 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/safe005_tso.i_BEv2_AllErrorsAtOnce [2023-12-09 14:57:03,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-12-09 14:57:03,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-12-09 14:57:03,926 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-12-09 14:57:03,927 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-12-09 14:57:03,927 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 14:57:03,927 INFO L457 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:57:03,930 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:57:03,930 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:57:03,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:57:03 BasicIcfg [2023-12-09 14:57:03,934 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:57:03,934 INFO L158 Benchmark]: Toolchain (without parser) took 8259.57ms. Allocated memory was 182.5MB in the beginning and 1.1GB in the end (delta: 901.8MB). Free memory was 130.4MB in the beginning and 732.7MB in the end (delta: -602.4MB). Peak memory consumption was 298.3MB. Max. memory is 8.0GB. [2023-12-09 14:57:03,935 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:57:03,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 439.01ms. Allocated memory is still 182.5MB. Free memory was 130.0MB in the beginning and 109.5MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-09 14:57:03,935 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.62ms. Allocated memory is still 182.5MB. Free memory was 109.5MB in the beginning and 107.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:57:03,935 INFO L158 Benchmark]: Boogie Preprocessor took 20.52ms. Allocated memory is still 182.5MB. Free memory was 107.4MB in the beginning and 105.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:57:03,935 INFO L158 Benchmark]: RCFGBuilder took 314.66ms. Allocated memory is still 182.5MB. Free memory was 105.9MB in the beginning and 151.6MB in the end (delta: -45.7MB). Peak memory consumption was 17.5MB. Max. memory is 8.0GB. [2023-12-09 14:57:03,935 INFO L158 Benchmark]: TraceAbstraction took 7442.86ms. Allocated memory was 182.5MB in the beginning and 1.1GB in the end (delta: 901.8MB). Free memory was 150.5MB in the beginning and 732.7MB in the end (delta: -582.2MB). Peak memory consumption was 317.5MB. Max. memory is 8.0GB. [2023-12-09 14:57:03,936 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 138.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 439.01ms. Allocated memory is still 182.5MB. Free memory was 130.0MB in the beginning and 109.5MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.62ms. Allocated memory is still 182.5MB. Free memory was 109.5MB in the beginning and 107.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.52ms. Allocated memory is still 182.5MB. Free memory was 107.4MB in the beginning and 105.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 314.66ms. Allocated memory is still 182.5MB. Free memory was 105.9MB in the beginning and 151.6MB in the end (delta: -45.7MB). Peak memory consumption was 17.5MB. Max. memory is 8.0GB. * TraceAbstraction took 7442.86ms. Allocated memory was 182.5MB in the beginning and 1.1GB in the end (delta: 901.8MB). Free memory was 150.5MB in the beginning and 732.7MB in the end (delta: -582.2MB). Peak memory consumption was 317.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 120 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: 7.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 496 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 496 mSDsluCounter, 578 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 439 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 706 IncrementalHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 139 mSDtfsCounter, 706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5129occurred in iteration=4, InterpolantAutomatonStates: 120, 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, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 538 NumberOfCodeBlocks, 538 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 529 ConstructedInterpolants, 0 QuantifiedInterpolants, 2397 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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! [2023-12-09 14:57:03,965 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...