/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/triangular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:48:45,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:48:45,628 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 14:48:45,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:48:45,657 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:48:45,657 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:48:45,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:48:45,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:48:45,660 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:48:45,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:48:45,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:48:45,662 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:48:45,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:48:45,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:48:45,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:48:45,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:48:45,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:48:45,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:48:45,664 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:48:45,664 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:48:45,665 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:48:45,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:48:45,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:48:45,669 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:48:45,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:48:45,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:48:45,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:48:45,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:48:45,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:48:45,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:48:45,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:48:45,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:48:45,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:48:45,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:48:45,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:48:45,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:48:45,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:48:45,909 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:48:45,909 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:48:45,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2023-12-09 14:48:47,012 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:48:47,204 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:48:47,204 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2023-12-09 14:48:47,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e99cf5c/7573aae860534c459b5daa5238986fa8/FLAGf465e5cee [2023-12-09 14:48:47,229 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88e99cf5c/7573aae860534c459b5daa5238986fa8 [2023-12-09 14:48:47,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:48:47,232 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:48:47,233 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:48:47,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:48:47,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:48:47,237 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,238 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312a36cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47, skipping insertion in model container [2023-12-09 14:48:47,238 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,276 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:48:47,525 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/triangular-1.i[30950,30963] [2023-12-09 14:48:47,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:48:47,536 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:48:47,587 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/triangular-1.i[30950,30963] [2023-12-09 14:48:47,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:48:47,611 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:48:47,612 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 14:48:47,617 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:48:47,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47 WrapperNode [2023-12-09 14:48:47,617 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:48:47,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:48:47,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:48:47,619 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:48:47,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,643 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,657 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 45 [2023-12-09 14:48:47,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:48:47,658 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:48:47,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:48:47,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:48:47,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,680 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,681 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,691 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:48:47,693 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:48:47,694 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:48:47,694 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:48:47,694 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (1/1) ... [2023-12-09 14:48:47,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:48:47,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:48:47,717 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 14:48:47,719 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 14:48:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-12-09 14:48:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-12-09 14:48:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-12-09 14:48:47,736 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-12-09 14:48:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:48:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 14:48:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:48:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:48:47,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:48:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:48:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 14:48:47,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:48:47,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:48:47,738 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 14:48:47,836 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:48:47,838 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:48:47,949 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:48:47,957 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:48:47,957 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 14:48:47,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:48:47 BoogieIcfgContainer [2023-12-09 14:48:47,959 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:48:47,960 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:48:47,961 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:48:47,963 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:48:47,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:48:47" (1/3) ... [2023-12-09 14:48:47,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a23ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:48:47, skipping insertion in model container [2023-12-09 14:48:47,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:48:47" (2/3) ... [2023-12-09 14:48:47,964 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a23ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:48:47, skipping insertion in model container [2023-12-09 14:48:47,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:48:47" (3/3) ... [2023-12-09 14:48:47,965 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2023-12-09 14:48:47,977 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:48:47,978 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 14:48:47,978 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:48:48,022 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-09 14:48:48,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 144 flow [2023-12-09 14:48:48,080 INFO L124 PetriNetUnfolderBase]: 5/66 cut-off events. [2023-12-09 14:48:48,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:48:48,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 5/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-12-09 14:48:48,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 68 transitions, 144 flow [2023-12-09 14:48:48,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 66 transitions, 138 flow [2023-12-09 14:48:48,097 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:48:48,102 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;@5dafe366, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:48:48,102 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 14:48:48,116 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:48:48,117 INFO L124 PetriNetUnfolderBase]: 4/54 cut-off events. [2023-12-09 14:48:48,117 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-12-09 14:48:48,117 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:48,118 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] [2023-12-09 14:48:48,118 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:48,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1937643587, now seen corresponding path program 1 times [2023-12-09 14:48:48,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:48,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575694201] [2023-12-09 14:48:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:48,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:48,728 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 14:48:48,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:48,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575694201] [2023-12-09 14:48:48,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575694201] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:48:48,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:48:48,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:48:48,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903116112] [2023-12-09 14:48:48,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:48:48,738 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:48:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:48:48,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:48:48,764 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:48,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 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 14:48:48,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:48,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:48,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:48,977 INFO L124 PetriNetUnfolderBase]: 50/226 cut-off events. [2023-12-09 14:48:48,977 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 14:48:48,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 226 events. 50/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 904 event pairs, 4 based on Foata normal form. 52/261 useless extension candidates. Maximal degree in co-relation 290. Up to 36 conditions per place. [2023-12-09 14:48:48,984 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 22 selfloop transitions, 21 changer transitions 0/93 dead transitions. [2023-12-09 14:48:48,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 93 transitions, 281 flow [2023-12-09 14:48:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:48:48,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:48:49,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2023-12-09 14:48:49,004 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8632352941176471 [2023-12-09 14:48:49,005 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2023-12-09 14:48:49,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2023-12-09 14:48:49,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:49,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2023-12-09 14:48:49,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 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 14:48:49,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 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 14:48:49,023 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 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 14:48:49,026 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2023-12-09 14:48:49,026 INFO L500 AbstractCegarLoop]: Abstraction has has 76 places, 93 transitions, 281 flow [2023-12-09 14:48:49,027 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.333333333333336) internal successors, (320), 6 states have internal predecessors, (320), 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 14:48:49,027 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:49,027 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] [2023-12-09 14:48:49,027 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:48:49,027 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:49,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:49,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1618670713, now seen corresponding path program 1 times [2023-12-09 14:48:49,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:49,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966262501] [2023-12-09 14:48:49,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:49,282 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 14:48:49,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966262501] [2023-12-09 14:48:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966262501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:48:49,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:48:49,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:48:49,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731007132] [2023-12-09 14:48:49,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:48:49,285 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:48:49,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:48:49,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:48:49,288 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:49,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 93 transitions, 281 flow. Second operand has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:49,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:49,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:49,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:49,453 INFO L124 PetriNetUnfolderBase]: 55/258 cut-off events. [2023-12-09 14:48:49,453 INFO L125 PetriNetUnfolderBase]: For 40/68 co-relation queries the response was YES. [2023-12-09 14:48:49,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 258 events. 55/258 cut-off events. For 40/68 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1075 event pairs, 0 based on Foata normal form. 5/242 useless extension candidates. Maximal degree in co-relation 412. Up to 43 conditions per place. [2023-12-09 14:48:49,459 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 19 selfloop transitions, 9 changer transitions 46/116 dead transitions. [2023-12-09 14:48:49,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 116 transitions, 505 flow [2023-12-09 14:48:49,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 14:48:49,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 14:48:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 454 transitions. [2023-12-09 14:48:49,461 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8345588235294118 [2023-12-09 14:48:49,461 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 454 transitions. [2023-12-09 14:48:49,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 454 transitions. [2023-12-09 14:48:49,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:49,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 454 transitions. [2023-12-09 14:48:49,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 56.75) internal successors, (454), 8 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:49,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:49,465 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:49,466 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 15 predicate places. [2023-12-09 14:48:49,466 INFO L500 AbstractCegarLoop]: Abstraction has has 83 places, 116 transitions, 505 flow [2023-12-09 14:48:49,466 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:49,466 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:49,467 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] [2023-12-09 14:48:49,467 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:48:49,467 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:49,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:49,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1498210311, now seen corresponding path program 1 times [2023-12-09 14:48:49,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:49,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364188338] [2023-12-09 14:48:49,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:49,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:49,617 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 14:48:49,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:49,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364188338] [2023-12-09 14:48:49,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364188338] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:48:49,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:48:49,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:48:49,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125142051] [2023-12-09 14:48:49,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:48:49,620 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:48:49,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:49,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:48:49,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:48:49,622 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:49,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 505 flow. Second operand has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:49,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:49,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:49,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:49,775 INFO L124 PetriNetUnfolderBase]: 79/377 cut-off events. [2023-12-09 14:48:49,775 INFO L125 PetriNetUnfolderBase]: For 179/295 co-relation queries the response was YES. [2023-12-09 14:48:49,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761 conditions, 377 events. 79/377 cut-off events. For 179/295 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1982 event pairs, 0 based on Foata normal form. 24/369 useless extension candidates. Maximal degree in co-relation 723. Up to 69 conditions per place. [2023-12-09 14:48:49,778 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 25 selfloop transitions, 11 changer transitions 68/146 dead transitions. [2023-12-09 14:48:49,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 146 transitions, 877 flow [2023-12-09 14:48:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 14:48:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 14:48:49,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 568 transitions. [2023-12-09 14:48:49,780 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8352941176470589 [2023-12-09 14:48:49,780 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 568 transitions. [2023-12-09 14:48:49,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 568 transitions. [2023-12-09 14:48:49,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:49,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 568 transitions. [2023-12-09 14:48:49,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.8) internal successors, (568), 10 states have internal predecessors, (568), 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 14:48:49,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 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 14:48:49,784 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 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 14:48:49,784 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 24 predicate places. [2023-12-09 14:48:49,785 INFO L500 AbstractCegarLoop]: Abstraction has has 92 places, 146 transitions, 877 flow [2023-12-09 14:48:49,785 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:49,785 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:49,785 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] [2023-12-09 14:48:49,785 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:48:49,785 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:49,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2002865279, now seen corresponding path program 2 times [2023-12-09 14:48:49,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:49,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598163628] [2023-12-09 14:48:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:49,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:49,900 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 14:48:49,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:49,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598163628] [2023-12-09 14:48:49,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598163628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:48:49,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:48:49,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 14:48:49,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885703803] [2023-12-09 14:48:49,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:48:49,904 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 14:48:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 14:48:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-09 14:48:49,907 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:49,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 146 transitions, 877 flow. Second operand has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:49,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:49,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:49,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:50,041 INFO L124 PetriNetUnfolderBase]: 81/396 cut-off events. [2023-12-09 14:48:50,042 INFO L125 PetriNetUnfolderBase]: For 329/427 co-relation queries the response was YES. [2023-12-09 14:48:50,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 917 conditions, 396 events. 81/396 cut-off events. For 329/427 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2177 event pairs, 0 based on Foata normal form. 26/393 useless extension candidates. Maximal degree in co-relation 874. Up to 68 conditions per place. [2023-12-09 14:48:50,045 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 22 selfloop transitions, 12 changer transitions 85/161 dead transitions. [2023-12-09 14:48:50,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 161 transitions, 1219 flow [2023-12-09 14:48:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 14:48:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 14:48:50,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 504 transitions. [2023-12-09 14:48:50,047 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8235294117647058 [2023-12-09 14:48:50,047 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 504 transitions. [2023-12-09 14:48:50,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 504 transitions. [2023-12-09 14:48:50,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:50,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 504 transitions. [2023-12-09 14:48:50,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 56.0) internal successors, (504), 9 states have internal predecessors, (504), 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 14:48:50,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 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 14:48:50,051 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 68.0) internal successors, (680), 10 states have internal predecessors, (680), 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 14:48:50,054 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 32 predicate places. [2023-12-09 14:48:50,054 INFO L500 AbstractCegarLoop]: Abstraction has has 100 places, 161 transitions, 1219 flow [2023-12-09 14:48:50,055 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.5) internal successors, (321), 6 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 14:48:50,055 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:50,055 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] [2023-12-09 14:48:50,055 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:48:50,055 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:50,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:50,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1956601411, now seen corresponding path program 1 times [2023-12-09 14:48:50,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:50,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961062647] [2023-12-09 14:48:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:50,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:50,205 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 14:48:50,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:50,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961062647] [2023-12-09 14:48:50,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961062647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:48:50,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:48:50,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:48:50,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470940415] [2023-12-09 14:48:50,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:48:50,207 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:48:50,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:50,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:48:50,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:48:50,208 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:50,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 161 transitions, 1219 flow. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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 14:48:50,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:50,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:50,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:50,371 INFO L124 PetriNetUnfolderBase]: 122/565 cut-off events. [2023-12-09 14:48:50,371 INFO L125 PetriNetUnfolderBase]: For 772/968 co-relation queries the response was YES. [2023-12-09 14:48:50,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 565 events. 122/565 cut-off events. For 772/968 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3463 event pairs, 0 based on Foata normal form. 47/569 useless extension candidates. Maximal degree in co-relation 1476. Up to 110 conditions per place. [2023-12-09 14:48:50,374 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 26 selfloop transitions, 21 changer transitions 120/209 dead transitions. [2023-12-09 14:48:50,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 209 transitions, 2017 flow [2023-12-09 14:48:50,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:48:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:48:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 733 transitions. [2023-12-09 14:48:50,377 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.829185520361991 [2023-12-09 14:48:50,377 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 733 transitions. [2023-12-09 14:48:50,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 733 transitions. [2023-12-09 14:48:50,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:50,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 733 transitions. [2023-12-09 14:48:50,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 56.38461538461539) internal successors, (733), 13 states have internal predecessors, (733), 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 14:48:50,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 68.0) internal successors, (952), 14 states have internal predecessors, (952), 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 14:48:50,382 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 68.0) internal successors, (952), 14 states have internal predecessors, (952), 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 14:48:50,384 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 44 predicate places. [2023-12-09 14:48:50,384 INFO L500 AbstractCegarLoop]: Abstraction has has 112 places, 209 transitions, 2017 flow [2023-12-09 14:48:50,384 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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 14:48:50,384 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:50,384 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] [2023-12-09 14:48:50,384 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 14:48:50,385 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:50,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:50,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1833710917, now seen corresponding path program 2 times [2023-12-09 14:48:50,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:50,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387609096] [2023-12-09 14:48:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:50,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:50,498 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 14:48:50,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:50,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387609096] [2023-12-09 14:48:50,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387609096] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:48:50,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:48:50,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 14:48:50,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291579092] [2023-12-09 14:48:50,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:48:50,500 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 14:48:50,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:50,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 14:48:50,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-09 14:48:50,501 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:50,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 209 transitions, 2017 flow. Second operand has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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 14:48:50,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:50,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:50,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:50,663 INFO L124 PetriNetUnfolderBase]: 127/582 cut-off events. [2023-12-09 14:48:50,663 INFO L125 PetriNetUnfolderBase]: For 1293/1640 co-relation queries the response was YES. [2023-12-09 14:48:50,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 582 events. 127/582 cut-off events. For 1293/1640 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3582 event pairs, 0 based on Foata normal form. 69/612 useless extension candidates. Maximal degree in co-relation 1726. Up to 114 conditions per place. [2023-12-09 14:48:50,666 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 25 selfloop transitions, 23 changer transitions 137/227 dead transitions. [2023-12-09 14:48:50,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 227 transitions, 2587 flow [2023-12-09 14:48:50,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 14:48:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 14:48:50,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 724 transitions. [2023-12-09 14:48:50,669 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8190045248868778 [2023-12-09 14:48:50,669 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 724 transitions. [2023-12-09 14:48:50,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 724 transitions. [2023-12-09 14:48:50,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:50,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 724 transitions. [2023-12-09 14:48:50,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 55.69230769230769) internal successors, (724), 13 states have internal predecessors, (724), 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 14:48:50,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 68.0) internal successors, (952), 14 states have internal predecessors, (952), 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 14:48:50,674 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 68.0) internal successors, (952), 14 states have internal predecessors, (952), 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 14:48:50,674 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 56 predicate places. [2023-12-09 14:48:50,674 INFO L500 AbstractCegarLoop]: Abstraction has has 124 places, 227 transitions, 2587 flow [2023-12-09 14:48:50,675 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.42857142857143) internal successors, (374), 7 states have internal predecessors, (374), 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 14:48:50,675 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:50,675 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:50,675 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:48:50,675 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:50,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:50,676 INFO L85 PathProgramCache]: Analyzing trace with hash 331768670, now seen corresponding path program 1 times [2023-12-09 14:48:50,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:50,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175557092] [2023-12-09 14:48:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:50,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:50,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:50,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175557092] [2023-12-09 14:48:50,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175557092] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:48:50,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007092501] [2023-12-09 14:48:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:50,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:50,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:48:50,824 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:48:50,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 14:48:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:50,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-09 14:48:50,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:48:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:51,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:48:51,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:51,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007092501] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:48:51,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:48:51,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2023-12-09 14:48:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479513628] [2023-12-09 14:48:51,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:48:51,164 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-09 14:48:51,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:51,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-09 14:48:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-12-09 14:48:51,168 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:51,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 227 transitions, 2587 flow. Second operand has 13 states, 13 states have (on average 53.61538461538461) internal successors, (697), 13 states have internal predecessors, (697), 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 14:48:51,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:51,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:51,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:51,549 INFO L124 PetriNetUnfolderBase]: 203/1018 cut-off events. [2023-12-09 14:48:51,549 INFO L125 PetriNetUnfolderBase]: For 2527/2808 co-relation queries the response was YES. [2023-12-09 14:48:51,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3218 conditions, 1018 events. 203/1018 cut-off events. For 2527/2808 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6755 event pairs, 0 based on Foata normal form. 58/993 useless extension candidates. Maximal degree in co-relation 3160. Up to 192 conditions per place. [2023-12-09 14:48:51,555 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 43 selfloop transitions, 17 changer transitions 240/342 dead transitions. [2023-12-09 14:48:51,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 342 transitions, 4781 flow [2023-12-09 14:48:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-09 14:48:51,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-12-09 14:48:51,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1295 transitions. [2023-12-09 14:48:51,559 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.828005115089514 [2023-12-09 14:48:51,559 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1295 transitions. [2023-12-09 14:48:51,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1295 transitions. [2023-12-09 14:48:51,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:51,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1295 transitions. [2023-12-09 14:48:51,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 56.30434782608695) internal successors, (1295), 23 states have internal predecessors, (1295), 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 14:48:51,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 68.0) internal successors, (1632), 24 states have internal predecessors, (1632), 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 14:48:51,567 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 68.0) internal successors, (1632), 24 states have internal predecessors, (1632), 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 14:48:51,567 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 78 predicate places. [2023-12-09 14:48:51,567 INFO L500 AbstractCegarLoop]: Abstraction has has 146 places, 342 transitions, 4781 flow [2023-12-09 14:48:51,568 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 53.61538461538461) internal successors, (697), 13 states have internal predecessors, (697), 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 14:48:51,568 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:51,568 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:51,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 14:48:51,772 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:51,773 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:51,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:51,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1171438052, now seen corresponding path program 2 times [2023-12-09 14:48:51,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:51,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841169590] [2023-12-09 14:48:51,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:51,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:51,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841169590] [2023-12-09 14:48:51,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841169590] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:48:51,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856865828] [2023-12-09 14:48:51,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:48:51,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:51,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:48:51,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:48:51,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 14:48:52,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:48:52,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:48:52,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-09 14:48:52,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:48:52,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:52,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:48:52,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:52,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856865828] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:48:52,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:48:52,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-12-09 14:48:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943144100] [2023-12-09 14:48:52,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:48:52,282 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 14:48:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:52,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 14:48:52,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-12-09 14:48:52,284 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:52,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 342 transitions, 4781 flow. Second operand has 14 states, 14 states have (on average 53.642857142857146) internal successors, (751), 14 states have internal predecessors, (751), 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 14:48:52,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:52,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:52,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:52,816 INFO L124 PetriNetUnfolderBase]: 318/1538 cut-off events. [2023-12-09 14:48:52,816 INFO L125 PetriNetUnfolderBase]: For 5462/6355 co-relation queries the response was YES. [2023-12-09 14:48:52,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5443 conditions, 1538 events. 318/1538 cut-off events. For 5462/6355 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11899 event pairs, 0 based on Foata normal form. 156/1577 useless extension candidates. Maximal degree in co-relation 5380. Up to 304 conditions per place. [2023-12-09 14:48:52,826 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 49 selfloop transitions, 44 changer transitions 375/510 dead transitions. [2023-12-09 14:48:52,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 510 transitions, 8389 flow [2023-12-09 14:48:52,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 14:48:52,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 14:48:52,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1728 transitions. [2023-12-09 14:48:52,857 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8197343453510436 [2023-12-09 14:48:52,857 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1728 transitions. [2023-12-09 14:48:52,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1728 transitions. [2023-12-09 14:48:52,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:52,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1728 transitions. [2023-12-09 14:48:52,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 55.74193548387097) internal successors, (1728), 31 states have internal predecessors, (1728), 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 14:48:52,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 68.0) internal successors, (2176), 32 states have internal predecessors, (2176), 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 14:48:52,867 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 68.0) internal successors, (2176), 32 states have internal predecessors, (2176), 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 14:48:52,867 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 108 predicate places. [2023-12-09 14:48:52,868 INFO L500 AbstractCegarLoop]: Abstraction has has 176 places, 510 transitions, 8389 flow [2023-12-09 14:48:52,869 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 53.642857142857146) internal successors, (751), 14 states have internal predecessors, (751), 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 14:48:52,869 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:52,869 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:52,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 14:48:53,073 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-09 14:48:53,074 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:53,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:53,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1373179293, now seen corresponding path program 1 times [2023-12-09 14:48:53,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:53,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041494319] [2023-12-09 14:48:53,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:53,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:53,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:53,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041494319] [2023-12-09 14:48:53,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041494319] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:48:53,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177444495] [2023-12-09 14:48:53,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:53,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:53,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:48:53,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:48:53,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 14:48:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:53,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 14:48:53,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:48:53,398 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:53,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:48:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:53,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177444495] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:48:53,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:48:53,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-12-09 14:48:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887830060] [2023-12-09 14:48:53,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:48:53,542 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 14:48:53,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:53,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 14:48:53,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-12-09 14:48:53,544 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:53,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 510 transitions, 8389 flow. Second operand has 15 states, 15 states have (on average 53.53333333333333) internal successors, (803), 15 states have internal predecessors, (803), 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 14:48:53,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:53,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:53,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:54,246 INFO L124 PetriNetUnfolderBase]: 505/2479 cut-off events. [2023-12-09 14:48:54,246 INFO L125 PetriNetUnfolderBase]: For 10396/11426 co-relation queries the response was YES. [2023-12-09 14:48:54,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9418 conditions, 2479 events. 505/2479 cut-off events. For 10396/11426 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 21867 event pairs, 0 based on Foata normal form. 151/2428 useless extension candidates. Maximal degree in co-relation 9350. Up to 494 conditions per place. [2023-12-09 14:48:54,260 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 68 selfloop transitions, 60 changer transitions 601/771 dead transitions. [2023-12-09 14:48:54,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 771 transitions, 14529 flow [2023-12-09 14:48:54,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 14:48:54,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 14:48:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1791 transitions. [2023-12-09 14:48:54,264 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8230698529411765 [2023-12-09 14:48:54,264 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1791 transitions. [2023-12-09 14:48:54,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1791 transitions. [2023-12-09 14:48:54,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:54,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1791 transitions. [2023-12-09 14:48:54,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 55.96875) internal successors, (1791), 32 states have internal predecessors, (1791), 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 14:48:54,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 68.0) internal successors, (2244), 33 states have internal predecessors, (2244), 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 14:48:54,272 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 68.0) internal successors, (2244), 33 states have internal predecessors, (2244), 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 14:48:54,273 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 139 predicate places. [2023-12-09 14:48:54,273 INFO L500 AbstractCegarLoop]: Abstraction has has 207 places, 771 transitions, 14529 flow [2023-12-09 14:48:54,273 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 53.53333333333333) internal successors, (803), 15 states have internal predecessors, (803), 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 14:48:54,273 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:54,273 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:54,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 14:48:54,478 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:54,479 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:54,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:54,479 INFO L85 PathProgramCache]: Analyzing trace with hash -556376271, now seen corresponding path program 2 times [2023-12-09 14:48:54,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:54,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64986876] [2023-12-09 14:48:54,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:54,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:54,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:54,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64986876] [2023-12-09 14:48:54,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64986876] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:48:54,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177240803] [2023-12-09 14:48:54,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:48:54,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:54,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:48:54,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:48:54,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 14:48:54,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:48:54,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:48:54,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 14:48:54,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:48:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:54,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:48:54,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:54,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177240803] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:48:54,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:48:54,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-12-09 14:48:54,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624336350] [2023-12-09 14:48:54,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:48:54,846 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 14:48:54,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:54,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 14:48:54,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-09 14:48:54,848 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:54,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 771 transitions, 14529 flow. Second operand has 15 states, 15 states have (on average 53.53333333333333) internal successors, (803), 15 states have internal predecessors, (803), 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 14:48:54,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:54,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:54,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:55,755 INFO L124 PetriNetUnfolderBase]: 625/3129 cut-off events. [2023-12-09 14:48:55,755 INFO L125 PetriNetUnfolderBase]: For 15775/16898 co-relation queries the response was YES. [2023-12-09 14:48:55,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12688 conditions, 3129 events. 625/3129 cut-off events. For 15775/16898 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 29189 event pairs, 0 based on Foata normal form. 156/3034 useless extension candidates. Maximal degree in co-relation 12615. Up to 623 conditions per place. [2023-12-09 14:48:55,774 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 75 selfloop transitions, 85 changer transitions 766/968 dead transitions. [2023-12-09 14:48:55,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 968 transitions, 20305 flow [2023-12-09 14:48:55,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 14:48:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 14:48:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1948 transitions. [2023-12-09 14:48:55,779 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8184873949579832 [2023-12-09 14:48:55,779 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1948 transitions. [2023-12-09 14:48:55,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1948 transitions. [2023-12-09 14:48:55,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:55,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1948 transitions. [2023-12-09 14:48:55,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 55.65714285714286) internal successors, (1948), 35 states have internal predecessors, (1948), 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 14:48:55,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 68.0) internal successors, (2448), 36 states have internal predecessors, (2448), 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 14:48:55,791 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 68.0) internal successors, (2448), 36 states have internal predecessors, (2448), 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 14:48:55,792 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 173 predicate places. [2023-12-09 14:48:55,792 INFO L500 AbstractCegarLoop]: Abstraction has has 241 places, 968 transitions, 20305 flow [2023-12-09 14:48:55,792 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 53.53333333333333) internal successors, (803), 15 states have internal predecessors, (803), 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 14:48:55,793 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:55,793 INFO L233 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:55,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 14:48:56,000 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:56,000 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:56,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:56,001 INFO L85 PathProgramCache]: Analyzing trace with hash 901880257, now seen corresponding path program 3 times [2023-12-09 14:48:56,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:56,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574742391] [2023-12-09 14:48:56,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:56,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:56,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:56,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574742391] [2023-12-09 14:48:56,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574742391] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:48:56,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298688391] [2023-12-09 14:48:56,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 14:48:56,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:56,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:48:56,260 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:48:56,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 14:48:56,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-09 14:48:56,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:48:56,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 14:48:56,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:48:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:56,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:48:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:56,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298688391] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:48:56,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:48:56,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2023-12-09 14:48:56,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992343569] [2023-12-09 14:48:56,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:48:56,656 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 14:48:56,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:56,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 14:48:56,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-12-09 14:48:56,658 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:56,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 968 transitions, 20305 flow. Second operand has 23 states, 23 states have (on average 53.391304347826086) internal successors, (1228), 23 states have internal predecessors, (1228), 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 14:48:56,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:56,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:56,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:57,957 INFO L124 PetriNetUnfolderBase]: 770/3855 cut-off events. [2023-12-09 14:48:57,957 INFO L125 PetriNetUnfolderBase]: For 23691/25238 co-relation queries the response was YES. [2023-12-09 14:48:57,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16811 conditions, 3855 events. 770/3855 cut-off events. For 23691/25238 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 36042 event pairs, 0 based on Foata normal form. 192/3736 useless extension candidates. Maximal degree in co-relation 16733. Up to 781 conditions per place. [2023-12-09 14:48:57,987 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 92 selfloop transitions, 110 changer transitions 930/1174 dead transitions. [2023-12-09 14:48:57,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1174 transitions, 27085 flow [2023-12-09 14:48:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-09 14:48:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-12-09 14:48:57,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2388 transitions. [2023-12-09 14:48:57,991 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8166894664842681 [2023-12-09 14:48:57,991 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2388 transitions. [2023-12-09 14:48:57,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2388 transitions. [2023-12-09 14:48:57,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:57,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2388 transitions. [2023-12-09 14:48:57,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 55.53488372093023) internal successors, (2388), 43 states have internal predecessors, (2388), 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 14:48:58,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 68.0) internal successors, (2992), 44 states have internal predecessors, (2992), 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 14:48:58,002 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 68.0) internal successors, (2992), 44 states have internal predecessors, (2992), 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 14:48:58,002 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 215 predicate places. [2023-12-09 14:48:58,002 INFO L500 AbstractCegarLoop]: Abstraction has has 283 places, 1174 transitions, 27085 flow [2023-12-09 14:48:58,003 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 53.391304347826086) internal successors, (1228), 23 states have internal predecessors, (1228), 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 14:48:58,003 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:58,003 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:48:58,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 14:48:58,207 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-09 14:48:58,207 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:48:58,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash -674454341, now seen corresponding path program 4 times [2023-12-09 14:48:58,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:58,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593286208] [2023-12-09 14:48:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:58,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:58,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:58,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593286208] [2023-12-09 14:48:58,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593286208] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:48:58,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844997298] [2023-12-09 14:48:58,519 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 14:48:58,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:58,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:48:58,525 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:48:58,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 14:48:58,602 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 14:48:58,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:48:58,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 14:48:58,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:48:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:58,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:48:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:58,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844997298] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:48:58,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:48:58,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 15 [2023-12-09 14:48:58,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960178999] [2023-12-09 14:48:58,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:48:58,997 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 14:48:58,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:48:58,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 14:48:58,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-09 14:48:58,999 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:48:59,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 1174 transitions, 27085 flow. Second operand has 15 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 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 14:48:59,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:48:59,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:48:59,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:49:00,070 INFO L124 PetriNetUnfolderBase]: 832/4295 cut-off events. [2023-12-09 14:49:00,070 INFO L125 PetriNetUnfolderBase]: For 29719/30848 co-relation queries the response was YES. [2023-12-09 14:49:00,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19544 conditions, 4295 events. 832/4295 cut-off events. For 29719/30848 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 41239 event pairs, 0 based on Foata normal form. 72/4006 useless extension candidates. Maximal degree in co-relation 19461. Up to 839 conditions per place. [2023-12-09 14:49:00,092 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 170 selfloop transitions, 40 changer transitions 1015/1267 dead transitions. [2023-12-09 14:49:00,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1267 transitions, 31751 flow [2023-12-09 14:49:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-12-09 14:49:00,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-12-09 14:49:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1626 transitions. [2023-12-09 14:49:00,101 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8245436105476673 [2023-12-09 14:49:00,101 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1626 transitions. [2023-12-09 14:49:00,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1626 transitions. [2023-12-09 14:49:00,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:49:00,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1626 transitions. [2023-12-09 14:49:00,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 56.06896551724138) internal successors, (1626), 29 states have internal predecessors, (1626), 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 14:49:00,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 68.0) internal successors, (2040), 30 states have internal predecessors, (2040), 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 14:49:00,113 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 68.0) internal successors, (2040), 30 states have internal predecessors, (2040), 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 14:49:00,115 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 243 predicate places. [2023-12-09 14:49:00,115 INFO L500 AbstractCegarLoop]: Abstraction has has 311 places, 1267 transitions, 31751 flow [2023-12-09 14:49:00,115 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 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 14:49:00,116 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:49:00,116 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:00,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 14:49:00,320 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:00,320 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:49:00,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:49:00,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2019057421, now seen corresponding path program 5 times [2023-12-09 14:49:00,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:49:00,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438290277] [2023-12-09 14:49:00,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:49:00,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:49:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:49:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:00,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:49:00,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438290277] [2023-12-09 14:49:00,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438290277] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:49:00,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473536600] [2023-12-09 14:49:00,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 14:49:00,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:00,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:49:00,621 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:49:00,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 14:49:00,701 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-09 14:49:00,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:49:00,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 14:49:00,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:49:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:00,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:49:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:00,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473536600] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:49:00,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:49:00,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 15 [2023-12-09 14:49:00,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625684042] [2023-12-09 14:49:00,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:49:00,986 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 14:49:00,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:49:00,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 14:49:00,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-09 14:49:00,987 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:49:00,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 1267 transitions, 31751 flow. Second operand has 15 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 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 14:49:00,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:49:00,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:49:00,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:49:02,347 INFO L124 PetriNetUnfolderBase]: 936/4738 cut-off events. [2023-12-09 14:49:02,347 INFO L125 PetriNetUnfolderBase]: For 40188/42152 co-relation queries the response was YES. [2023-12-09 14:49:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23285 conditions, 4738 events. 936/4738 cut-off events. For 40188/42152 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 46125 event pairs, 0 based on Foata normal form. 148/4498 useless extension candidates. Maximal degree in co-relation 23197. Up to 943 conditions per place. [2023-12-09 14:49:02,369 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 150 selfloop transitions, 76 changer transitions 1155/1423 dead transitions. [2023-12-09 14:49:02,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 1423 transitions, 38553 flow [2023-12-09 14:49:02,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 14:49:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 14:49:02,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1786 transitions. [2023-12-09 14:49:02,374 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8207720588235294 [2023-12-09 14:49:02,374 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1786 transitions. [2023-12-09 14:49:02,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1786 transitions. [2023-12-09 14:49:02,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:49:02,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1786 transitions. [2023-12-09 14:49:02,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 55.8125) internal successors, (1786), 32 states have internal predecessors, (1786), 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 14:49:02,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 68.0) internal successors, (2244), 33 states have internal predecessors, (2244), 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 14:49:02,394 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 68.0) internal successors, (2244), 33 states have internal predecessors, (2244), 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 14:49:02,394 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 274 predicate places. [2023-12-09 14:49:02,394 INFO L500 AbstractCegarLoop]: Abstraction has has 342 places, 1423 transitions, 38553 flow [2023-12-09 14:49:02,394 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 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 14:49:02,394 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:49:02,395 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:02,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 14:49:02,595 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:02,595 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:49:02,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:49:02,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1995365925, now seen corresponding path program 6 times [2023-12-09 14:49:02,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:49:02,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62765181] [2023-12-09 14:49:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:49:02,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:49:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:49:02,829 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:02,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:49:02,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62765181] [2023-12-09 14:49:02,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62765181] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:49:02,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282218388] [2023-12-09 14:49:02,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 14:49:02,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:02,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:49:02,831 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:49:02,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 14:49:02,907 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2023-12-09 14:49:02,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:49:02,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 14:49:02,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:49:03,046 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:03,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:49:03,213 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:03,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282218388] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:49:03,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:49:03,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2023-12-09 14:49:03,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221858452] [2023-12-09 14:49:03,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:49:03,215 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 14:49:03,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:49:03,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 14:49:03,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-12-09 14:49:03,217 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:49:03,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 1423 transitions, 38553 flow. Second operand has 16 states, 16 states have (on average 53.25) internal successors, (852), 16 states have internal predecessors, (852), 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 14:49:03,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:49:03,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:49:03,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:49:04,639 INFO L124 PetriNetUnfolderBase]: 1040/5332 cut-off events. [2023-12-09 14:49:04,639 INFO L125 PetriNetUnfolderBase]: For 50185/51728 co-relation queries the response was YES. [2023-12-09 14:49:04,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27489 conditions, 5332 events. 1040/5332 cut-off events. For 50185/51728 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 53519 event pairs, 0 based on Foata normal form. 136/5015 useless extension candidates. Maximal degree in co-relation 27396. Up to 1047 conditions per place. [2023-12-09 14:49:04,665 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 148 selfloop transitions, 100 changer transitions 1289/1579 dead transitions. [2023-12-09 14:49:04,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1579 transitions, 45979 flow [2023-12-09 14:49:04,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-09 14:49:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-12-09 14:49:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2000 transitions. [2023-12-09 14:49:04,745 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8169934640522876 [2023-12-09 14:49:04,745 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2000 transitions. [2023-12-09 14:49:04,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2000 transitions. [2023-12-09 14:49:04,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:49:04,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2000 transitions. [2023-12-09 14:49:04,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 55.55555555555556) internal successors, (2000), 36 states have internal predecessors, (2000), 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 14:49:04,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 68.0) internal successors, (2516), 37 states have internal predecessors, (2516), 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 14:49:04,752 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 68.0) internal successors, (2516), 37 states have internal predecessors, (2516), 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 14:49:04,752 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 309 predicate places. [2023-12-09 14:49:04,752 INFO L500 AbstractCegarLoop]: Abstraction has has 377 places, 1579 transitions, 45979 flow [2023-12-09 14:49:04,752 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 53.25) internal successors, (852), 16 states have internal predecessors, (852), 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 14:49:04,752 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:49:04,753 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:04,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 14:49:04,953 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-09 14:49:04,953 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:49:04,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:49:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash 990365907, now seen corresponding path program 7 times [2023-12-09 14:49:04,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:49:04,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371377199] [2023-12-09 14:49:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:49:04,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:49:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:49:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:05,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:49:05,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371377199] [2023-12-09 14:49:05,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371377199] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:49:05,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206386591] [2023-12-09 14:49:05,162 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 14:49:05,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:05,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:49:05,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:49:05,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 14:49:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:49:05,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 14:49:05,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:49:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:05,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:49:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:05,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206386591] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:49:05,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:49:05,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 15 [2023-12-09 14:49:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209950563] [2023-12-09 14:49:05,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:49:05,504 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 14:49:05,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:49:05,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 14:49:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-12-09 14:49:05,505 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:49:05,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1579 transitions, 45979 flow. Second operand has 15 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 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 14:49:05,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:49:05,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:49:05,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:49:06,808 INFO L124 PetriNetUnfolderBase]: 1162/5836 cut-off events. [2023-12-09 14:49:06,808 INFO L125 PetriNetUnfolderBase]: For 68348/71284 co-relation queries the response was YES. [2023-12-09 14:49:06,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32320 conditions, 5836 events. 1162/5836 cut-off events. For 68348/71284 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 60202 event pairs, 0 based on Foata normal form. 268/5630 useless extension candidates. Maximal degree in co-relation 32222. Up to 1169 conditions per place. [2023-12-09 14:49:06,834 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 156 selfloop transitions, 116 changer transitions 1448/1762 dead transitions. [2023-12-09 14:49:06,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 1762 transitions, 54893 flow [2023-12-09 14:49:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-09 14:49:06,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-12-09 14:49:06,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1894 transitions. [2023-12-09 14:49:06,837 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8192041522491349 [2023-12-09 14:49:06,837 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1894 transitions. [2023-12-09 14:49:06,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1894 transitions. [2023-12-09 14:49:06,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:49:06,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1894 transitions. [2023-12-09 14:49:06,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 55.705882352941174) internal successors, (1894), 34 states have internal predecessors, (1894), 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 14:49:06,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 68.0) internal successors, (2380), 35 states have internal predecessors, (2380), 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 14:49:06,843 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 68.0) internal successors, (2380), 35 states have internal predecessors, (2380), 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 14:49:06,844 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 342 predicate places. [2023-12-09 14:49:06,844 INFO L500 AbstractCegarLoop]: Abstraction has has 410 places, 1762 transitions, 54893 flow [2023-12-09 14:49:06,844 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 53.2) internal successors, (798), 15 states have internal predecessors, (798), 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 14:49:06,844 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:49:06,844 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:06,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 14:49:07,048 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-09 14:49:07,049 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:49:07,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:49:07,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1014183739, now seen corresponding path program 8 times [2023-12-09 14:49:07,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:49:07,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346504204] [2023-12-09 14:49:07,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:49:07,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:49:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:49:07,289 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:07,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:49:07,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346504204] [2023-12-09 14:49:07,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346504204] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:49:07,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615912041] [2023-12-09 14:49:07,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:49:07,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:07,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:49:07,291 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:49:07,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 14:49:07,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:49:07,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:49:07,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 14:49:07,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:49:07,496 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:07,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:49:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:07,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615912041] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:49:07,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:49:07,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2023-12-09 14:49:07,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834985204] [2023-12-09 14:49:07,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:49:07,720 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 14:49:07,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:49:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 14:49:07,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-09 14:49:07,722 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:49:07,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 1762 transitions, 54893 flow. Second operand has 16 states, 16 states have (on average 53.25) internal successors, (852), 16 states have internal predecessors, (852), 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 14:49:07,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:49:07,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:49:07,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:49:09,175 INFO L124 PetriNetUnfolderBase]: 1256/6298 cut-off events. [2023-12-09 14:49:09,175 INFO L125 PetriNetUnfolderBase]: For 83319/86540 co-relation queries the response was YES. [2023-12-09 14:49:09,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36803 conditions, 6298 events. 1256/6298 cut-off events. For 83319/86540 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 66425 event pairs, 0 based on Foata normal form. 249/6032 useless extension candidates. Maximal degree in co-relation 36700. Up to 1263 conditions per place. [2023-12-09 14:49:09,205 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 158 selfloop transitions, 134 changer transitions 1569/1903 dead transitions. [2023-12-09 14:49:09,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 1903 transitions, 63111 flow [2023-12-09 14:49:09,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-12-09 14:49:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-12-09 14:49:09,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2110 transitions. [2023-12-09 14:49:09,208 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.81656346749226 [2023-12-09 14:49:09,208 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2110 transitions. [2023-12-09 14:49:09,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2110 transitions. [2023-12-09 14:49:09,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:49:09,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2110 transitions. [2023-12-09 14:49:09,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 55.526315789473685) internal successors, (2110), 38 states have internal predecessors, (2110), 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 14:49:09,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 68.0) internal successors, (2652), 39 states have internal predecessors, (2652), 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 14:49:09,214 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 68.0) internal successors, (2652), 39 states have internal predecessors, (2652), 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 14:49:09,215 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 379 predicate places. [2023-12-09 14:49:09,215 INFO L500 AbstractCegarLoop]: Abstraction has has 447 places, 1903 transitions, 63111 flow [2023-12-09 14:49:09,215 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 53.25) internal successors, (852), 16 states have internal predecessors, (852), 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 14:49:09,215 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:49:09,215 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:09,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-09 14:49:09,419 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-09 14:49:09,420 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:49:09,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:49:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1018397277, now seen corresponding path program 9 times [2023-12-09 14:49:09,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:49:09,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877894928] [2023-12-09 14:49:09,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:49:09,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:49:09,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:49:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:49:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877894928] [2023-12-09 14:49:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877894928] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:49:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305698019] [2023-12-09 14:49:09,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 14:49:09,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:09,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:49:09,607 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:49:09,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 14:49:09,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-12-09 14:49:09,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:49:09,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 14:49:09,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:49:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:09,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:49:10,042 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:10,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305698019] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:49:10,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:49:10,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2023-12-09 14:49:10,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211161767] [2023-12-09 14:49:10,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:49:10,043 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 14:49:10,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:49:10,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 14:49:10,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-12-09 14:49:10,044 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:49:10,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1903 transitions, 63111 flow. Second operand has 16 states, 16 states have (on average 53.25) internal successors, (852), 16 states have internal predecessors, (852), 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 14:49:10,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:49:10,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:49:10,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:49:11,744 INFO L124 PetriNetUnfolderBase]: 1325/6577 cut-off events. [2023-12-09 14:49:11,744 INFO L125 PetriNetUnfolderBase]: For 101231/105307 co-relation queries the response was YES. [2023-12-09 14:49:11,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40756 conditions, 6577 events. 1325/6577 cut-off events. For 101231/105307 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 69773 event pairs, 0 based on Foata normal form. 293/6344 useless extension candidates. Maximal degree in co-relation 40648. Up to 1334 conditions per place. [2023-12-09 14:49:11,783 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 155 selfloop transitions, 154 changer transitions 1654/2005 dead transitions. [2023-12-09 14:49:11,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 2005 transitions, 70489 flow [2023-12-09 14:49:11,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-09 14:49:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-12-09 14:49:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2220 transitions. [2023-12-09 14:49:11,786 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8161764705882353 [2023-12-09 14:49:11,786 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2220 transitions. [2023-12-09 14:49:11,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2220 transitions. [2023-12-09 14:49:11,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:49:11,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2220 transitions. [2023-12-09 14:49:11,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 55.5) internal successors, (2220), 40 states have internal predecessors, (2220), 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 14:49:11,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 68.0) internal successors, (2788), 41 states have internal predecessors, (2788), 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 14:49:11,797 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 68.0) internal successors, (2788), 41 states have internal predecessors, (2788), 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 14:49:11,797 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 418 predicate places. [2023-12-09 14:49:11,797 INFO L500 AbstractCegarLoop]: Abstraction has has 486 places, 2005 transitions, 70489 flow [2023-12-09 14:49:11,798 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 53.25) internal successors, (852), 16 states have internal predecessors, (852), 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 14:49:11,798 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:49:11,798 INFO L233 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:11,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 14:49:12,003 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-09 14:49:12,003 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:49:12,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:49:12,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1295831005, now seen corresponding path program 10 times [2023-12-09 14:49:12,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:49:12,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103339566] [2023-12-09 14:49:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:49:12,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:49:12,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:49:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:12,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:49:12,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103339566] [2023-12-09 14:49:12,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103339566] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:49:12,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746442976] [2023-12-09 14:49:12,315 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 14:49:12,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:12,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:49:12,316 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:49:12,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 14:49:12,388 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 14:49:12,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:49:12,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 14:49:12,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:49:12,477 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:12,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:49:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:12,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746442976] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:49:12,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:49:12,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2023-12-09 14:49:12,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858994340] [2023-12-09 14:49:12,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:49:12,594 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 14:49:12,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:49:12,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 14:49:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-12-09 14:49:12,595 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 68 [2023-12-09 14:49:12,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 2005 transitions, 70489 flow. Second operand has 16 states, 16 states have (on average 53.25) internal successors, (852), 16 states have internal predecessors, (852), 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 14:49:12,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:49:12,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 68 [2023-12-09 14:49:12,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:49:14,412 INFO L124 PetriNetUnfolderBase]: 1358/6784 cut-off events. [2023-12-09 14:49:14,412 INFO L125 PetriNetUnfolderBase]: For 114924/118442 co-relation queries the response was YES. [2023-12-09 14:49:14,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43873 conditions, 6784 events. 1358/6784 cut-off events. For 114924/118442 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 72339 event pairs, 0 based on Foata normal form. 376/6609 useless extension candidates. Maximal degree in co-relation 43760. Up to 1369 conditions per place. [2023-12-09 14:49:14,443 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 158 selfloop transitions, 160 changer transitions 1693/2053 dead transitions. [2023-12-09 14:49:14,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 2053 transitions, 76223 flow [2023-12-09 14:49:14,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-09 14:49:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-12-09 14:49:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2164 transitions. [2023-12-09 14:49:14,445 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8159879336349924 [2023-12-09 14:49:14,445 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2164 transitions. [2023-12-09 14:49:14,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2164 transitions. [2023-12-09 14:49:14,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:49:14,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2164 transitions. [2023-12-09 14:49:14,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 55.48717948717949) internal successors, (2164), 39 states have internal predecessors, (2164), 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 14:49:14,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 68.0) internal successors, (2720), 40 states have internal predecessors, (2720), 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 14:49:14,452 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 68.0) internal successors, (2720), 40 states have internal predecessors, (2720), 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 14:49:14,453 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 456 predicate places. [2023-12-09 14:49:14,453 INFO L500 AbstractCegarLoop]: Abstraction has has 524 places, 2053 transitions, 76223 flow [2023-12-09 14:49:14,453 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 53.25) internal successors, (852), 16 states have internal predecessors, (852), 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 14:49:14,453 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:49:14,454 INFO L233 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:14,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-09 14:49:14,661 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-09 14:49:14,661 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 14:49:14,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:49:14,661 INFO L85 PathProgramCache]: Analyzing trace with hash -21295120, now seen corresponding path program 11 times [2023-12-09 14:49:14,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:49:14,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789162297] [2023-12-09 14:49:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:49:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:49:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:49:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 73 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:14,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:49:14,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789162297] [2023-12-09 14:49:14,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789162297] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:49:14,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81128092] [2023-12-09 14:49:14,800 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 14:49:14,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:14,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:49:14,802 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:49:14,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-09 14:49:14,878 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-12-09 14:49:14,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:49:14,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 14:49:14,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:49:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:14,959 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 14:49:14,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81128092] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:49:14,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 14:49:14,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13] total 15 [2023-12-09 14:49:14,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250459519] [2023-12-09 14:49:14,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:49:14,960 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-09 14:49:14,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:49:14,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-09 14:49:14,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-12-09 14:49:14,961 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 68 [2023-12-09 14:49:14,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 2053 transitions, 76223 flow. Second operand has 13 states, 13 states have (on average 56.84615384615385) internal successors, (739), 13 states have internal predecessors, (739), 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 14:49:14,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:49:14,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 68 [2023-12-09 14:49:14,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:49:19,263 INFO L124 PetriNetUnfolderBase]: 2671/12609 cut-off events. [2023-12-09 14:49:19,263 INFO L125 PetriNetUnfolderBase]: For 214916/222503 co-relation queries the response was YES. [2023-12-09 14:49:19,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85369 conditions, 12609 events. 2671/12609 cut-off events. For 214916/222503 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 157348 event pairs, 5 based on Foata normal form. 67/11761 useless extension candidates. Maximal degree in co-relation 85254. Up to 2542 conditions per place. [2023-12-09 14:49:19,347 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 0 selfloop transitions, 0 changer transitions 1631/1631 dead transitions. [2023-12-09 14:49:19,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 1631 transitions, 59619 flow [2023-12-09 14:49:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-09 14:49:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-12-09 14:49:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1037 transitions. [2023-12-09 14:49:19,349 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8472222222222222 [2023-12-09 14:49:19,349 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1037 transitions. [2023-12-09 14:49:19,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1037 transitions. [2023-12-09 14:49:19,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:49:19,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1037 transitions. [2023-12-09 14:49:19,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 57.611111111111114) internal successors, (1037), 18 states have internal predecessors, (1037), 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 14:49:19,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 68.0) internal successors, (1292), 19 states have internal predecessors, (1292), 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 14:49:19,351 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 68.0) internal successors, (1292), 19 states have internal predecessors, (1292), 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 14:49:19,351 INFO L308 CegarLoopForPetriNet]: 68 programPoint places, 471 predicate places. [2023-12-09 14:49:19,352 INFO L500 AbstractCegarLoop]: Abstraction has has 539 places, 1631 transitions, 59619 flow [2023-12-09 14:49:19,352 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 56.84615384615385) internal successors, (739), 13 states have internal predecessors, (739), 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 14:49:19,357 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/triangular-1.i_BEv2_AllErrorsAtOnce [2023-12-09 14:49:19,441 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 14:49:19,442 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 14:49:19,442 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 14:49:19,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-09 14:49:19,646 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:49:19,647 INFO L457 BasicCegarLoop]: Path program histogram: [11, 2, 2, 2, 1, 1] [2023-12-09 14:49:19,649 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:49:19,650 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:49:19,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:49:19 BasicIcfg [2023-12-09 14:49:19,655 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:49:19,655 INFO L158 Benchmark]: Toolchain (without parser) took 32422.86ms. Allocated memory was 194.0MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 141.0MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-09 14:49:19,655 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:49:19,655 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.49ms. Allocated memory is still 194.0MB. Free memory was 141.0MB in the beginning and 121.1MB in the end (delta: 20.0MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-09 14:49:19,656 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.10ms. Allocated memory is still 194.0MB. Free memory was 121.1MB in the beginning and 119.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 14:49:19,656 INFO L158 Benchmark]: Boogie Preprocessor took 35.11ms. Allocated memory is still 194.0MB. Free memory was 119.5MB in the beginning and 118.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:49:19,656 INFO L158 Benchmark]: RCFGBuilder took 265.28ms. Allocated memory is still 194.0MB. Free memory was 118.0MB in the beginning and 104.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-09 14:49:19,656 INFO L158 Benchmark]: TraceAbstraction took 31694.25ms. Allocated memory was 194.0MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 104.3MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-12-09 14:49:19,657 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 194.0MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 384.49ms. Allocated memory is still 194.0MB. Free memory was 141.0MB in the beginning and 121.1MB in the end (delta: 20.0MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.10ms. Allocated memory is still 194.0MB. Free memory was 121.1MB in the beginning and 119.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.11ms. Allocated memory is still 194.0MB. Free memory was 119.5MB in the beginning and 118.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 265.28ms. Allocated memory is still 194.0MB. Free memory was 118.0MB in the beginning and 104.9MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 31694.25ms. Allocated memory was 194.0MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 104.3MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 722]: 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 5 procedures, 88 locations, 3 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: 31.6s, OverallIterations: 19, TraceHistogramMax: 6, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 20.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2946 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2946 mSDsluCounter, 430 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 312 mSDsCounter, 296 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2638 IncrementalHoareTripleChecker+Invalid, 2934 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 296 mSolverCounterUnsat, 118 mSDtfsCounter, 2638 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2227 GetRequests, 1613 SyntacticMatches, 36 SemanticMatches, 578 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6376 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76223occurred in iteration=18, InterpolantAutomatonStates: 493, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 1966 NumberOfCodeBlocks, 1966 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 2718 ConstructedInterpolants, 0 QuantifiedInterpolants, 10400 SizeOfPredicates, 114 NumberOfNonLiveVariables, 2137 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 44 InterpolantComputations, 7 PerfectInterpolantSequences, 171/1954 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 14:49:19,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...