/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/weaver/popl20-queue-add-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:32:33,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:32:33,230 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 15:32:33,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:32:33,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:32:33,258 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:32:33,258 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:32:33,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:32:33,258 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:32:33,261 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:32:33,262 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:32:33,262 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:32:33,262 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:32:33,263 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:32:33,264 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:32:33,264 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:32:33,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:32:33,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:32:33,264 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:32:33,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:32:33,265 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:32:33,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:32:33,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:32:33,266 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:32:33,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:32:33,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:32:33,266 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:32:33,266 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:32:33,266 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:32:33,267 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:32:33,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:32:33,267 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:32:33,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:32:33,268 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:32:33,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:32:33,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:32:33,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:32:33,438 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:32:33,438 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:32:33,439 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2023-12-09 15:32:34,595 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:32:34,738 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:32:34,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c [2023-12-09 15:32:34,746 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8d04f14/a4ba69de46414c90b84652e78ac0fed6/FLAG09d8b31f6 [2023-12-09 15:32:34,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf8d04f14/a4ba69de46414c90b84652e78ac0fed6 [2023-12-09 15:32:34,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:32:34,758 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:32:34,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:32:34,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:32:34,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:32:34,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:34,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ea05f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34, skipping insertion in model container [2023-12-09 15:32:34,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:34,787 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:32:34,936 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2722,2735] [2023-12-09 15:32:34,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:32:34,961 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:32:34,986 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-2.wvr.c[2722,2735] [2023-12-09 15:32:34,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:32:34,993 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:32:34,993 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:32:34,998 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:32:34,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34 WrapperNode [2023-12-09 15:32:34,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:32:34,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:32:34,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:32:34,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:32:35,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,034 INFO L138 Inliner]: procedures = 24, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 161 [2023-12-09 15:32:35,035 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:32:35,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:32:35,036 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:32:35,036 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:32:35,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,051 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,058 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:32:35,065 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:32:35,065 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:32:35,065 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:32:35,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (1/1) ... [2023-12-09 15:32:35,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:32:35,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:35,097 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 15:32:35,108 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 15:32:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:32:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:32:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:32:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:32:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:32:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:32:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:32:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:32:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:32:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:32:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:32:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:32:35,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:32:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:32:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:32:35,124 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 15:32:35,215 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:32:35,218 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:32:35,399 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:32:35,466 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:32:35,466 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 15:32:35,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:32:35 BoogieIcfgContainer [2023-12-09 15:32:35,467 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:32:35,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:32:35,469 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:32:35,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:32:35,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:32:34" (1/3) ... [2023-12-09 15:32:35,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141120dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:32:35, skipping insertion in model container [2023-12-09 15:32:35,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:32:34" (2/3) ... [2023-12-09 15:32:35,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141120dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:32:35, skipping insertion in model container [2023-12-09 15:32:35,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:32:35" (3/3) ... [2023-12-09 15:32:35,474 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-2.wvr.c [2023-12-09 15:32:35,487 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:32:35,487 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:32:35,487 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:32:35,551 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:32:35,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 140 transitions, 294 flow [2023-12-09 15:32:35,649 INFO L124 PetriNetUnfolderBase]: 11/138 cut-off events. [2023-12-09 15:32:35,650 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:32:35,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 11/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 80 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 102. Up to 3 conditions per place. [2023-12-09 15:32:35,657 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 140 transitions, 294 flow [2023-12-09 15:32:35,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 129 transitions, 270 flow [2023-12-09 15:32:35,677 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:32:35,683 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;@b816c65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:32:35,683 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:32:35,725 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:32:35,725 INFO L124 PetriNetUnfolderBase]: 11/128 cut-off events. [2023-12-09 15:32:35,726 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:32:35,726 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:35,726 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:35,727 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 15:32:35,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash 889046637, now seen corresponding path program 1 times [2023-12-09 15:32:35,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:35,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913007015] [2023-12-09 15:32:35,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:35,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:35,982 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 15:32:35,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:35,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913007015] [2023-12-09 15:32:35,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913007015] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:35,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:35,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-09 15:32:35,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319595620] [2023-12-09 15:32:35,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:35,991 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-09 15:32:35,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:36,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-09 15:32:36,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-09 15:32:36,019 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 140 [2023-12-09 15:32:36,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 129 transitions, 270 flow. Second operand has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 0 states have call successors, (0), 0 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 15:32:36,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:36,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 140 [2023-12-09 15:32:36,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:36,075 INFO L124 PetriNetUnfolderBase]: 12/153 cut-off events. [2023-12-09 15:32:36,076 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-12-09 15:32:36,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 153 events. 12/153 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 189 event pairs, 5 based on Foata normal form. 14/157 useless extension candidates. Maximal degree in co-relation 100. Up to 22 conditions per place. [2023-12-09 15:32:36,079 INFO L140 encePairwiseOnDemand]: 132/140 looper letters, 7 selfloop transitions, 0 changer transitions 4/121 dead transitions. [2023-12-09 15:32:36,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 121 transitions, 268 flow [2023-12-09 15:32:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-09 15:32:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-12-09 15:32:36,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 263 transitions. [2023-12-09 15:32:36,091 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9392857142857143 [2023-12-09 15:32:36,092 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 263 transitions. [2023-12-09 15:32:36,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 263 transitions. [2023-12-09 15:32:36,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:36,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 263 transitions. [2023-12-09 15:32:36,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 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 15:32:36,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 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 15:32:36,105 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 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 15:32:36,108 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 1 predicate places. [2023-12-09 15:32:36,108 INFO L500 AbstractCegarLoop]: Abstraction has has 126 places, 121 transitions, 268 flow [2023-12-09 15:32:36,108 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 127.0) internal successors, (254), 2 states have internal predecessors, (254), 0 states have call successors, (0), 0 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 15:32:36,108 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:36,109 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:36,109 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:32:36,109 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 15:32:36,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:36,110 INFO L85 PathProgramCache]: Analyzing trace with hash 820339201, now seen corresponding path program 1 times [2023-12-09 15:32:36,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:36,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509693463] [2023-12-09 15:32:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:36,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:36,300 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 15:32:36,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:36,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509693463] [2023-12-09 15:32:36,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509693463] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:36,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:36,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:32:36,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036680161] [2023-12-09 15:32:36,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:36,302 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:32:36,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:36,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:32:36,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:32:36,304 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 140 [2023-12-09 15:32:36,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 121 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 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 15:32:36,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:36,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 140 [2023-12-09 15:32:36,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:36,349 INFO L124 PetriNetUnfolderBase]: 13/157 cut-off events. [2023-12-09 15:32:36,349 INFO L125 PetriNetUnfolderBase]: For 35/39 co-relation queries the response was YES. [2023-12-09 15:32:36,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 157 events. 13/157 cut-off events. For 35/39 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 204 event pairs, 1 based on Foata normal form. 1/147 useless extension candidates. Maximal degree in co-relation 116. Up to 25 conditions per place. [2023-12-09 15:32:36,351 INFO L140 encePairwiseOnDemand]: 136/140 looper letters, 11 selfloop transitions, 3 changer transitions 4/124 dead transitions. [2023-12-09 15:32:36,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 124 transitions, 311 flow [2023-12-09 15:32:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:32:36,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:32:36,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-12-09 15:32:36,354 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8928571428571429 [2023-12-09 15:32:36,354 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-12-09 15:32:36,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-12-09 15:32:36,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:36,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-12-09 15:32:36,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 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 15:32:36,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 15:32:36,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 15:32:36,360 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 3 predicate places. [2023-12-09 15:32:36,361 INFO L500 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 311 flow [2023-12-09 15:32:36,361 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 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 15:32:36,361 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:36,362 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:36,362 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:32:36,362 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 15:32:36,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:36,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1881246337, now seen corresponding path program 2 times [2023-12-09 15:32:36,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:36,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719769191] [2023-12-09 15:32:36,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:36,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:36,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:36,587 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 15:32:36,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:36,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719769191] [2023-12-09 15:32:36,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719769191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:36,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:36,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:32:36,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388123119] [2023-12-09 15:32:36,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:36,590 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:32:36,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:32:36,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:32:36,595 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 140 [2023-12-09 15:32:36,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 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 15:32:36,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:36,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 140 [2023-12-09 15:32:36,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:36,709 INFO L124 PetriNetUnfolderBase]: 13/200 cut-off events. [2023-12-09 15:32:36,710 INFO L125 PetriNetUnfolderBase]: For 87/95 co-relation queries the response was YES. [2023-12-09 15:32:36,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 200 events. 13/200 cut-off events. For 87/95 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 309 event pairs, 1 based on Foata normal form. 4/190 useless extension candidates. Maximal degree in co-relation 187. Up to 26 conditions per place. [2023-12-09 15:32:36,711 INFO L140 encePairwiseOnDemand]: 128/140 looper letters, 23 selfloop transitions, 8 changer transitions 10/134 dead transitions. [2023-12-09 15:32:36,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 134 transitions, 419 flow [2023-12-09 15:32:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:32:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:32:36,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 999 transitions. [2023-12-09 15:32:36,715 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7928571428571428 [2023-12-09 15:32:36,715 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 999 transitions. [2023-12-09 15:32:36,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 999 transitions. [2023-12-09 15:32:36,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:36,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 999 transitions. [2023-12-09 15:32:36,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.0) internal successors, (999), 9 states have internal predecessors, (999), 0 states have call successors, (0), 0 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 15:32:36,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 15:32:36,744 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 140.0) internal successors, (1400), 10 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 15:32:36,744 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 11 predicate places. [2023-12-09 15:32:36,744 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 134 transitions, 419 flow [2023-12-09 15:32:36,745 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 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 15:32:36,745 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:36,745 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:36,745 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:32:36,745 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 15:32:36,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:36,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1679862486, now seen corresponding path program 1 times [2023-12-09 15:32:36,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:36,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52106212] [2023-12-09 15:32:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:36,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:37,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:32:37,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52106212] [2023-12-09 15:32:37,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52106212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:37,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:37,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-09 15:32:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971350589] [2023-12-09 15:32:37,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:37,144 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:32:37,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:37,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:32:37,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:32:37,147 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 140 [2023-12-09 15:32:37,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 134 transitions, 419 flow. Second operand has 12 states, 12 states have (on average 86.25) internal successors, (1035), 12 states have internal predecessors, (1035), 0 states have call successors, (0), 0 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 15:32:37,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:37,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 140 [2023-12-09 15:32:37,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:37,383 INFO L124 PetriNetUnfolderBase]: 100/434 cut-off events. [2023-12-09 15:32:37,384 INFO L125 PetriNetUnfolderBase]: For 586/616 co-relation queries the response was YES. [2023-12-09 15:32:37,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 434 events. 100/434 cut-off events. For 586/616 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1705 event pairs, 20 based on Foata normal form. 3/401 useless extension candidates. Maximal degree in co-relation 587. Up to 84 conditions per place. [2023-12-09 15:32:37,389 INFO L140 encePairwiseOnDemand]: 120/140 looper letters, 64 selfloop transitions, 14 changer transitions 20/175 dead transitions. [2023-12-09 15:32:37,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 175 transitions, 842 flow [2023-12-09 15:32:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-09 15:32:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-12-09 15:32:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1415 transitions. [2023-12-09 15:32:37,392 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6316964285714286 [2023-12-09 15:32:37,392 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1415 transitions. [2023-12-09 15:32:37,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1415 transitions. [2023-12-09 15:32:37,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:37,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1415 transitions. [2023-12-09 15:32:37,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 88.4375) internal successors, (1415), 16 states have internal predecessors, (1415), 0 states have call successors, (0), 0 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 15:32:37,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 140.0) internal successors, (2380), 17 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 15:32:37,400 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 140.0) internal successors, (2380), 17 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 15:32:37,402 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 26 predicate places. [2023-12-09 15:32:37,402 INFO L500 AbstractCegarLoop]: Abstraction has has 151 places, 175 transitions, 842 flow [2023-12-09 15:32:37,404 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 86.25) internal successors, (1035), 12 states have internal predecessors, (1035), 0 states have call successors, (0), 0 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 15:32:37,404 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:37,404 INFO L233 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:37,404 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:32:37,404 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 15:32:37,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:37,405 INFO L85 PathProgramCache]: Analyzing trace with hash 66170960, now seen corresponding path program 1 times [2023-12-09 15:32:37,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:37,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936600409] [2023-12-09 15:32:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:37,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:37,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:32:37,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:37,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936600409] [2023-12-09 15:32:37,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936600409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:32:37,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:32:37,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 15:32:37,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939687236] [2023-12-09 15:32:37,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:32:37,533 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:32:37,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:37,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:32:37,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-09 15:32:37,534 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 140 [2023-12-09 15:32:37,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 175 transitions, 842 flow. Second operand has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 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 15:32:37,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:37,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 140 [2023-12-09 15:32:37,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:37,619 INFO L124 PetriNetUnfolderBase]: 182/683 cut-off events. [2023-12-09 15:32:37,619 INFO L125 PetriNetUnfolderBase]: For 1552/1601 co-relation queries the response was YES. [2023-12-09 15:32:37,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1773 conditions, 683 events. 182/683 cut-off events. For 1552/1601 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3400 event pairs, 26 based on Foata normal form. 19/636 useless extension candidates. Maximal degree in co-relation 1167. Up to 228 conditions per place. [2023-12-09 15:32:37,623 INFO L140 encePairwiseOnDemand]: 136/140 looper letters, 23 selfloop transitions, 13 changer transitions 34/191 dead transitions. [2023-12-09 15:32:37,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 191 transitions, 1125 flow [2023-12-09 15:32:37,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 15:32:37,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 15:32:37,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 503 transitions. [2023-12-09 15:32:37,625 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8982142857142857 [2023-12-09 15:32:37,625 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 503 transitions. [2023-12-09 15:32:37,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 503 transitions. [2023-12-09 15:32:37,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:37,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 503 transitions. [2023-12-09 15:32:37,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.75) internal successors, (503), 4 states have internal predecessors, (503), 0 states have call successors, (0), 0 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 15:32:37,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 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 15:32:37,628 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 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 15:32:37,629 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 29 predicate places. [2023-12-09 15:32:37,629 INFO L500 AbstractCegarLoop]: Abstraction has has 154 places, 191 transitions, 1125 flow [2023-12-09 15:32:37,629 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 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 15:32:37,629 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:37,629 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:37,629 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:32:37,630 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 15:32:37,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:37,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1482892449, now seen corresponding path program 1 times [2023-12-09 15:32:37,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:37,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203949325] [2023-12-09 15:32:37,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:37,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:37,777 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 15:32:37,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:37,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203949325] [2023-12-09 15:32:37,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203949325] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:37,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828455081] [2023-12-09 15:32:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:37,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:37,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:37,781 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 15:32:37,820 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 15:32:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:37,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-09 15:32:37,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:38,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:38,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:38,373 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 15:32:38,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828455081] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:38,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:38,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-09 15:32:38,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953756337] [2023-12-09 15:32:38,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:38,374 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:32:38,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:32:38,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:32:38,377 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 140 [2023-12-09 15:32:38,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 191 transitions, 1125 flow. Second operand has 19 states, 19 states have (on average 106.78947368421052) internal successors, (2029), 19 states have internal predecessors, (2029), 0 states have call successors, (0), 0 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 15:32:38,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:38,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 140 [2023-12-09 15:32:38,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:38,684 INFO L124 PetriNetUnfolderBase]: 229/875 cut-off events. [2023-12-09 15:32:38,684 INFO L125 PetriNetUnfolderBase]: For 2839/2917 co-relation queries the response was YES. [2023-12-09 15:32:38,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2475 conditions, 875 events. 229/875 cut-off events. For 2839/2917 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4700 event pairs, 40 based on Foata normal form. 25/813 useless extension candidates. Maximal degree in co-relation 1261. Up to 261 conditions per place. [2023-12-09 15:32:38,689 INFO L140 encePairwiseOnDemand]: 125/140 looper letters, 48 selfloop transitions, 13 changer transitions 56/218 dead transitions. [2023-12-09 15:32:38,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 218 transitions, 1618 flow [2023-12-09 15:32:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-09 15:32:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-12-09 15:32:38,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1928 transitions. [2023-12-09 15:32:38,693 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2023-12-09 15:32:38,693 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1928 transitions. [2023-12-09 15:32:38,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1928 transitions. [2023-12-09 15:32:38,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:38,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1928 transitions. [2023-12-09 15:32:38,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 107.11111111111111) internal successors, (1928), 18 states have internal predecessors, (1928), 0 states have call successors, (0), 0 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 15:32:38,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 140.0) internal successors, (2660), 19 states have internal predecessors, (2660), 0 states have call successors, (0), 0 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 15:32:38,702 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 140.0) internal successors, (2660), 19 states have internal predecessors, (2660), 0 states have call successors, (0), 0 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 15:32:38,704 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 46 predicate places. [2023-12-09 15:32:38,704 INFO L500 AbstractCegarLoop]: Abstraction has has 171 places, 218 transitions, 1618 flow [2023-12-09 15:32:38,705 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 106.78947368421052) internal successors, (2029), 19 states have internal predecessors, (2029), 0 states have call successors, (0), 0 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 15:32:38,705 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:38,705 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:38,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:32:38,910 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-09 15:32:38,910 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 15:32:38,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:38,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1126843662, now seen corresponding path program 2 times [2023-12-09 15:32:38,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:38,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500215388] [2023-12-09 15:32:38,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:38,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:39,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500215388] [2023-12-09 15:32:39,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500215388] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115972335] [2023-12-09 15:32:39,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:32:39,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:39,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:39,813 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 15:32:39,841 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 15:32:39,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:32:39,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:32:39,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-09 15:32:39,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:40,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:40,871 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-12-09 15:32:40,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-12-09 15:32:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:41,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115972335] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:41,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:41,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 14] total 50 [2023-12-09 15:32:41,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540955020] [2023-12-09 15:32:41,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:41,615 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-09 15:32:41,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:41,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-09 15:32:41,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=2114, Unknown=0, NotChecked=0, Total=2450 [2023-12-09 15:32:41,618 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 140 [2023-12-09 15:32:41,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 218 transitions, 1618 flow. Second operand has 50 states, 50 states have (on average 59.72) internal successors, (2986), 50 states have internal predecessors, (2986), 0 states have call successors, (0), 0 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 15:32:41,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:41,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 140 [2023-12-09 15:32:41,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:44,015 INFO L124 PetriNetUnfolderBase]: 2222/5274 cut-off events. [2023-12-09 15:32:44,016 INFO L125 PetriNetUnfolderBase]: For 18423/18582 co-relation queries the response was YES. [2023-12-09 15:32:44,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17351 conditions, 5274 events. 2222/5274 cut-off events. For 18423/18582 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 41870 event pairs, 353 based on Foata normal form. 7/4803 useless extension candidates. Maximal degree in co-relation 9221. Up to 2172 conditions per place. [2023-12-09 15:32:44,046 INFO L140 encePairwiseOnDemand]: 106/140 looper letters, 280 selfloop transitions, 101 changer transitions 88/526 dead transitions. [2023-12-09 15:32:44,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 526 transitions, 5577 flow [2023-12-09 15:32:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-09 15:32:44,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-12-09 15:32:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 3248 transitions. [2023-12-09 15:32:44,053 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4377358490566038 [2023-12-09 15:32:44,053 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 3248 transitions. [2023-12-09 15:32:44,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 3248 transitions. [2023-12-09 15:32:44,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:44,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 3248 transitions. [2023-12-09 15:32:44,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 61.283018867924525) internal successors, (3248), 53 states have internal predecessors, (3248), 0 states have call successors, (0), 0 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 15:32:44,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 140.0) internal successors, (7560), 54 states have internal predecessors, (7560), 0 states have call successors, (0), 0 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 15:32:44,071 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 140.0) internal successors, (7560), 54 states have internal predecessors, (7560), 0 states have call successors, (0), 0 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 15:32:44,072 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 98 predicate places. [2023-12-09 15:32:44,072 INFO L500 AbstractCegarLoop]: Abstraction has has 223 places, 526 transitions, 5577 flow [2023-12-09 15:32:44,073 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 59.72) internal successors, (2986), 50 states have internal predecessors, (2986), 0 states have call successors, (0), 0 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 15:32:44,073 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:44,073 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:44,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-09 15:32:44,277 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,SelfDestructingSolverStorable6 [2023-12-09 15:32:44,280 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 15:32:44,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:44,280 INFO L85 PathProgramCache]: Analyzing trace with hash 904826894, now seen corresponding path program 3 times [2023-12-09 15:32:44,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:44,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510074932] [2023-12-09 15:32:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:44,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:45,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:45,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510074932] [2023-12-09 15:32:45,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510074932] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:45,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916784125] [2023-12-09 15:32:45,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:32:45,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:45,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:45,264 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 15:32:45,287 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 15:32:45,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:32:45,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:32:45,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:32:45,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:45,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:32:45,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-09 15:32:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:32:45,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:45,848 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_135 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_135) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 0))) is different from false [2023-12-09 15:32:45,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:32:45,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 37 [2023-12-09 15:32:45,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-12-09 15:32:46,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:32:46,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916784125] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:46,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:46,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 12, 12] total 43 [2023-12-09 15:32:46,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955704729] [2023-12-09 15:32:46,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:46,242 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-12-09 15:32:46,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:46,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-12-09 15:32:46,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1615, Unknown=1, NotChecked=80, Total=1806 [2023-12-09 15:32:46,245 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 140 [2023-12-09 15:32:46,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 526 transitions, 5577 flow. Second operand has 43 states, 43 states have (on average 51.41860465116279) internal successors, (2211), 43 states have internal predecessors, (2211), 0 states have call successors, (0), 0 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 15:32:46,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:46,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 140 [2023-12-09 15:32:46,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:49,868 INFO L124 PetriNetUnfolderBase]: 2743/6312 cut-off events. [2023-12-09 15:32:49,868 INFO L125 PetriNetUnfolderBase]: For 31035/31335 co-relation queries the response was YES. [2023-12-09 15:32:49,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25182 conditions, 6312 events. 2743/6312 cut-off events. For 31035/31335 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 50919 event pairs, 328 based on Foata normal form. 33/5824 useless extension candidates. Maximal degree in co-relation 14345. Up to 3020 conditions per place. [2023-12-09 15:32:49,915 INFO L140 encePairwiseOnDemand]: 111/140 looper letters, 390 selfloop transitions, 142 changer transitions 88/671 dead transitions. [2023-12-09 15:32:49,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 671 transitions, 8590 flow [2023-12-09 15:32:49,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-09 15:32:49,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-12-09 15:32:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 2606 transitions. [2023-12-09 15:32:49,921 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3722857142857143 [2023-12-09 15:32:49,921 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 2606 transitions. [2023-12-09 15:32:49,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 2606 transitions. [2023-12-09 15:32:49,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:49,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 2606 transitions. [2023-12-09 15:32:49,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 52.12) internal successors, (2606), 50 states have internal predecessors, (2606), 0 states have call successors, (0), 0 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 15:32:49,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 140.0) internal successors, (7140), 51 states have internal predecessors, (7140), 0 states have call successors, (0), 0 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 15:32:49,934 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 140.0) internal successors, (7140), 51 states have internal predecessors, (7140), 0 states have call successors, (0), 0 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 15:32:49,936 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 147 predicate places. [2023-12-09 15:32:49,938 INFO L500 AbstractCegarLoop]: Abstraction has has 272 places, 671 transitions, 8590 flow [2023-12-09 15:32:49,938 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 51.41860465116279) internal successors, (2211), 43 states have internal predecessors, (2211), 0 states have call successors, (0), 0 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 15:32:49,939 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:49,939 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:49,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-09 15:32:50,143 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:50,143 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 15:32:50,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:50,144 INFO L85 PathProgramCache]: Analyzing trace with hash -2124255254, now seen corresponding path program 1 times [2023-12-09 15:32:50,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:50,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688803235] [2023-12-09 15:32:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:50,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:51,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:51,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688803235] [2023-12-09 15:32:51,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688803235] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:51,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781331534] [2023-12-09 15:32:51,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:51,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:51,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:51,377 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 15:32:51,404 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 15:32:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:51,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-09 15:32:51,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:52,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:32:52,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-12-09 15:32:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:52,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:52,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:32:52,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-12-09 15:32:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781331534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:53,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:53,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 24] total 65 [2023-12-09 15:32:53,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674372675] [2023-12-09 15:32:53,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:53,781 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-09 15:32:53,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:53,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-09 15:32:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=3696, Unknown=0, NotChecked=0, Total=4160 [2023-12-09 15:32:53,786 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-12-09 15:32:53,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 671 transitions, 8590 flow. Second operand has 65 states, 65 states have (on average 49.184615384615384) internal successors, (3197), 65 states have internal predecessors, (3197), 0 states have call successors, (0), 0 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 15:32:53,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:53,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-12-09 15:32:53,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:33:13,749 INFO L124 PetriNetUnfolderBase]: 9361/19418 cut-off events. [2023-12-09 15:33:13,749 INFO L125 PetriNetUnfolderBase]: For 112094/112870 co-relation queries the response was YES. [2023-12-09 15:33:13,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92690 conditions, 19418 events. 9361/19418 cut-off events. For 112094/112870 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 182947 event pairs, 234 based on Foata normal form. 77/18366 useless extension candidates. Maximal degree in co-relation 63979. Up to 10139 conditions per place. [2023-12-09 15:33:13,944 INFO L140 encePairwiseOnDemand]: 91/140 looper letters, 1760 selfloop transitions, 1517 changer transitions 312/3626 dead transitions. [2023-12-09 15:33:13,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 3626 transitions, 46737 flow [2023-12-09 15:33:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2023-12-09 15:33:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2023-12-09 15:33:13,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 13938 transitions. [2023-12-09 15:33:13,962 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3660189075630252 [2023-12-09 15:33:13,962 INFO L72 ComplementDD]: Start complementDD. Operand 272 states and 13938 transitions. [2023-12-09 15:33:13,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 13938 transitions. [2023-12-09 15:33:13,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:33:13,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 272 states and 13938 transitions. [2023-12-09 15:33:13,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 273 states, 272 states have (on average 51.24264705882353) internal successors, (13938), 272 states have internal predecessors, (13938), 0 states have call successors, (0), 0 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 15:33:14,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 273 states, 273 states have (on average 140.0) internal successors, (38220), 273 states have internal predecessors, (38220), 0 states have call successors, (0), 0 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 15:33:14,034 INFO L81 ComplementDD]: Finished complementDD. Result has 273 states, 273 states have (on average 140.0) internal successors, (38220), 273 states have internal predecessors, (38220), 0 states have call successors, (0), 0 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 15:33:14,035 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 418 predicate places. [2023-12-09 15:33:14,035 INFO L500 AbstractCegarLoop]: Abstraction has has 543 places, 3626 transitions, 46737 flow [2023-12-09 15:33:14,035 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 49.184615384615384) internal successors, (3197), 65 states have internal predecessors, (3197), 0 states have call successors, (0), 0 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 15:33:14,036 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:33:14,036 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:14,055 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-09 15:33:14,240 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:14,240 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 15:33:14,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:33:14,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1223275250, now seen corresponding path program 2 times [2023-12-09 15:33:14,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:33:14,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540895503] [2023-12-09 15:33:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:33:14,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:33:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:33:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:15,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:33:15,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540895503] [2023-12-09 15:33:15,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540895503] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:33:15,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372872545] [2023-12-09 15:33:15,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:33:15,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:15,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:33:15,289 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 15:33:15,291 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 15:33:15,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:33:15,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:33:15,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-09 15:33:15,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:33:16,531 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-12-09 15:33:16,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2023-12-09 15:33:16,651 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:16,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:33:17,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:17,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-12-09 15:33:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:17,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372872545] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:33:17,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:33:17,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 24] total 67 [2023-12-09 15:33:17,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101691010] [2023-12-09 15:33:17,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:33:17,939 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-12-09 15:33:17,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:33:17,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-12-09 15:33:17,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=4060, Unknown=0, NotChecked=0, Total=4422 [2023-12-09 15:33:17,942 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-12-09 15:33:17,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 3626 transitions, 46737 flow. Second operand has 67 states, 67 states have (on average 49.35820895522388) internal successors, (3307), 67 states have internal predecessors, (3307), 0 states have call successors, (0), 0 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 15:33:17,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:33:17,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-12-09 15:33:17,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:33:35,748 INFO L124 PetriNetUnfolderBase]: 11387/23568 cut-off events. [2023-12-09 15:33:35,748 INFO L125 PetriNetUnfolderBase]: For 153139/154325 co-relation queries the response was YES. [2023-12-09 15:33:35,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133007 conditions, 23568 events. 11387/23568 cut-off events. For 153139/154325 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 228308 event pairs, 173 based on Foata normal form. 252/22447 useless extension candidates. Maximal degree in co-relation 95523. Up to 12342 conditions per place. [2023-12-09 15:33:35,913 INFO L140 encePairwiseOnDemand]: 95/140 looper letters, 2750 selfloop transitions, 1883 changer transitions 467/5137 dead transitions. [2023-12-09 15:33:35,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 5137 transitions, 74741 flow [2023-12-09 15:33:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2023-12-09 15:33:35,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2023-12-09 15:33:35,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 7937 transitions. [2023-12-09 15:33:35,920 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36576036866359446 [2023-12-09 15:33:35,920 INFO L72 ComplementDD]: Start complementDD. Operand 155 states and 7937 transitions. [2023-12-09 15:33:35,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 155 states and 7937 transitions. [2023-12-09 15:33:35,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:33:35,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 155 states and 7937 transitions. [2023-12-09 15:33:35,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 156 states, 155 states have (on average 51.20645161290322) internal successors, (7937), 155 states have internal predecessors, (7937), 0 states have call successors, (0), 0 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 15:33:35,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 156 states, 156 states have (on average 140.0) internal successors, (21840), 156 states have internal predecessors, (21840), 0 states have call successors, (0), 0 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 15:33:35,945 INFO L81 ComplementDD]: Finished complementDD. Result has 156 states, 156 states have (on average 140.0) internal successors, (21840), 156 states have internal predecessors, (21840), 0 states have call successors, (0), 0 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 15:33:35,946 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 572 predicate places. [2023-12-09 15:33:35,946 INFO L500 AbstractCegarLoop]: Abstraction has has 697 places, 5137 transitions, 74741 flow [2023-12-09 15:33:35,946 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 49.35820895522388) internal successors, (3307), 67 states have internal predecessors, (3307), 0 states have call successors, (0), 0 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 15:33:35,946 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:33:35,947 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:35,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-09 15:33:36,151 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,SelfDestructingSolverStorable9 [2023-12-09 15:33:36,152 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 15:33:36,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:33:36,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1899045984, now seen corresponding path program 3 times [2023-12-09 15:33:36,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:33:36,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514292727] [2023-12-09 15:33:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:33:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:33:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:33:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:37,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:33:37,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514292727] [2023-12-09 15:33:37,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514292727] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:33:37,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842797344] [2023-12-09 15:33:37,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:33:37,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:37,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:33:37,108 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 15:33:37,110 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 15:33:37,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:33:37,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:33:37,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-09 15:33:37,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:33:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:33:37,843 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:33:38,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:38,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-12-09 15:33:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:33:38,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842797344] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:33:38,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:33:38,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15, 15] total 49 [2023-12-09 15:33:38,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275527483] [2023-12-09 15:33:38,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:33:38,236 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-12-09 15:33:38,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:33:38,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-12-09 15:33:38,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=2160, Unknown=0, NotChecked=0, Total=2352 [2023-12-09 15:33:38,239 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-12-09 15:33:38,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 5137 transitions, 74741 flow. Second operand has 49 states, 49 states have (on average 49.42857142857143) internal successors, (2422), 49 states have internal predecessors, (2422), 0 states have call successors, (0), 0 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 15:33:38,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:33:38,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-12-09 15:33:38,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:33:55,159 INFO L124 PetriNetUnfolderBase]: 12619/25894 cut-off events. [2023-12-09 15:33:55,160 INFO L125 PetriNetUnfolderBase]: For 181900/183287 co-relation queries the response was YES. [2023-12-09 15:33:55,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167998 conditions, 25894 events. 12619/25894 cut-off events. For 181900/183287 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 253790 event pairs, 143 based on Foata normal form. 195/24599 useless extension candidates. Maximal degree in co-relation 118451. Up to 13840 conditions per place. [2023-12-09 15:33:55,412 INFO L140 encePairwiseOnDemand]: 96/140 looper letters, 4131 selfloop transitions, 1443 changer transitions 600/6211 dead transitions. [2023-12-09 15:33:55,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 784 places, 6211 transitions, 100590 flow [2023-12-09 15:33:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-09 15:33:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-12-09 15:33:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 4537 transitions. [2023-12-09 15:33:55,416 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.368262987012987 [2023-12-09 15:33:55,416 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 4537 transitions. [2023-12-09 15:33:55,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 4537 transitions. [2023-12-09 15:33:55,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:33:55,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 4537 transitions. [2023-12-09 15:33:55,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 51.55681818181818) internal successors, (4537), 88 states have internal predecessors, (4537), 0 states have call successors, (0), 0 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 15:33:55,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 140.0) internal successors, (12460), 89 states have internal predecessors, (12460), 0 states have call successors, (0), 0 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 15:33:55,428 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 140.0) internal successors, (12460), 89 states have internal predecessors, (12460), 0 states have call successors, (0), 0 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 15:33:55,429 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 659 predicate places. [2023-12-09 15:33:55,429 INFO L500 AbstractCegarLoop]: Abstraction has has 784 places, 6211 transitions, 100590 flow [2023-12-09 15:33:55,430 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 49.42857142857143) internal successors, (2422), 49 states have internal predecessors, (2422), 0 states have call successors, (0), 0 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 15:33:55,430 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:33:55,430 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:33:55,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-09 15:33:55,634 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:55,635 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 15:33:55,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:33:55,636 INFO L85 PathProgramCache]: Analyzing trace with hash 16736438, now seen corresponding path program 4 times [2023-12-09 15:33:55,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:33:55,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61016936] [2023-12-09 15:33:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:33:55,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:33:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:33:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:56,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:33:56,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61016936] [2023-12-09 15:33:56,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61016936] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:33:56,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021588460] [2023-12-09 15:33:56,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:33:56,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:56,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:33:56,468 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 15:33:56,469 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 15:33:56,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:33:56,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:33:56,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 46 conjunts are in the unsatisfiable core [2023-12-09 15:33:56,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:33:57,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2023-12-09 15:33:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:57,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:33:57,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:33:57,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-12-09 15:33:58,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:58,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021588460] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:33:58,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:33:58,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 24] total 68 [2023-12-09 15:33:58,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987728731] [2023-12-09 15:33:58,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:33:58,634 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-09 15:33:58,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:33:58,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-09 15:33:58,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=3979, Unknown=0, NotChecked=0, Total=4556 [2023-12-09 15:33:58,642 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-12-09 15:33:58,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 784 places, 6211 transitions, 100590 flow. Second operand has 68 states, 68 states have (on average 49.30882352941177) internal successors, (3353), 68 states have internal predecessors, (3353), 0 states have call successors, (0), 0 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 15:33:58,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:33:58,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-12-09 15:33:58,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:34:35,673 INFO L124 PetriNetUnfolderBase]: 15840/32717 cut-off events. [2023-12-09 15:34:35,673 INFO L125 PetriNetUnfolderBase]: For 262495/264725 co-relation queries the response was YES. [2023-12-09 15:34:35,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240177 conditions, 32717 events. 15840/32717 cut-off events. For 262495/264725 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 336073 event pairs, 168 based on Foata normal form. 384/31316 useless extension candidates. Maximal degree in co-relation 175061. Up to 17964 conditions per place. [2023-12-09 15:34:35,984 INFO L140 encePairwiseOnDemand]: 92/140 looper letters, 4358 selfloop transitions, 3504 changer transitions 797/8696 dead transitions. [2023-12-09 15:34:35,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1055 places, 8696 transitions, 156615 flow [2023-12-09 15:34:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2023-12-09 15:34:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2023-12-09 15:34:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 13969 transitions. [2023-12-09 15:34:36,121 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3668329831932773 [2023-12-09 15:34:36,121 INFO L72 ComplementDD]: Start complementDD. Operand 272 states and 13969 transitions. [2023-12-09 15:34:36,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 272 states and 13969 transitions. [2023-12-09 15:34:36,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:34:36,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 272 states and 13969 transitions. [2023-12-09 15:34:36,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 273 states, 272 states have (on average 51.356617647058826) internal successors, (13969), 272 states have internal predecessors, (13969), 0 states have call successors, (0), 0 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 15:34:36,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 273 states, 273 states have (on average 140.0) internal successors, (38220), 273 states have internal predecessors, (38220), 0 states have call successors, (0), 0 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 15:34:36,193 INFO L81 ComplementDD]: Finished complementDD. Result has 273 states, 273 states have (on average 140.0) internal successors, (38220), 273 states have internal predecessors, (38220), 0 states have call successors, (0), 0 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 15:34:36,194 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 930 predicate places. [2023-12-09 15:34:36,194 INFO L500 AbstractCegarLoop]: Abstraction has has 1055 places, 8696 transitions, 156615 flow [2023-12-09 15:34:36,195 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 49.30882352941177) internal successors, (3353), 68 states have internal predecessors, (3353), 0 states have call successors, (0), 0 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 15:34:36,195 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:34:36,195 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:34:36,211 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 15:34:36,400 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:34:36,400 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 15:34:36,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:34:36,401 INFO L85 PathProgramCache]: Analyzing trace with hash -309377678, now seen corresponding path program 5 times [2023-12-09 15:34:36,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:34:36,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621690557] [2023-12-09 15:34:36,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:34:36,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:34:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:34:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:34:37,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:34:37,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621690557] [2023-12-09 15:34:37,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621690557] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:34:37,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853591465] [2023-12-09 15:34:37,342 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:34:37,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:34:37,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:34:37,343 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 15:34:37,344 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 15:34:37,439 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:34:37,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:34:37,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-09 15:34:37,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:34:37,940 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:34:37,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:34:38,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:34:38,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 21 [2023-12-09 15:34:38,372 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:34:38,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853591465] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:34:38,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:34:38,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 16, 16] total 51 [2023-12-09 15:34:38,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903043912] [2023-12-09 15:34:38,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:34:38,373 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-12-09 15:34:38,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:34:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-12-09 15:34:38,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2352, Unknown=0, NotChecked=0, Total=2550 [2023-12-09 15:34:38,376 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-12-09 15:34:38,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1055 places, 8696 transitions, 156615 flow. Second operand has 51 states, 51 states have (on average 49.3921568627451) internal successors, (2519), 51 states have internal predecessors, (2519), 0 states have call successors, (0), 0 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 15:34:38,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:34:38,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-12-09 15:34:38,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:35:21,974 INFO L124 PetriNetUnfolderBase]: 16959/35508 cut-off events. [2023-12-09 15:35:21,975 INFO L125 PetriNetUnfolderBase]: For 305331/307670 co-relation queries the response was YES. [2023-12-09 15:35:22,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288162 conditions, 35508 events. 16959/35508 cut-off events. For 305331/307670 co-relation queries the response was YES. Maximal size of possible extension queue 1609. Compared 373289 event pairs, 118 based on Foata normal form. 293/33900 useless extension candidates. Maximal degree in co-relation 206408. Up to 19388 conditions per place. [2023-12-09 15:35:22,368 INFO L140 encePairwiseOnDemand]: 98/140 looper letters, 6373 selfloop transitions, 2200 changer transitions 1038/9648 dead transitions. [2023-12-09 15:35:22,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1138 places, 9648 transitions, 191858 flow [2023-12-09 15:35:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-09 15:35:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2023-12-09 15:35:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 4298 transitions. [2023-12-09 15:35:22,372 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36547619047619045 [2023-12-09 15:35:22,372 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 4298 transitions. [2023-12-09 15:35:22,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 4298 transitions. [2023-12-09 15:35:22,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:35:22,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 4298 transitions. [2023-12-09 15:35:22,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 51.166666666666664) internal successors, (4298), 84 states have internal predecessors, (4298), 0 states have call successors, (0), 0 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 15:35:22,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 140.0) internal successors, (11900), 85 states have internal predecessors, (11900), 0 states have call successors, (0), 0 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 15:35:22,383 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 140.0) internal successors, (11900), 85 states have internal predecessors, (11900), 0 states have call successors, (0), 0 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 15:35:22,384 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 1013 predicate places. [2023-12-09 15:35:22,384 INFO L500 AbstractCegarLoop]: Abstraction has has 1138 places, 9648 transitions, 191858 flow [2023-12-09 15:35:22,385 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 49.3921568627451) internal successors, (2519), 51 states have internal predecessors, (2519), 0 states have call successors, (0), 0 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 15:35:22,385 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:35:22,385 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:35:22,393 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 15:35:22,591 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,SelfDestructingSolverStorable12 [2023-12-09 15:35:22,591 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 15:35:22,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:35:22,591 INFO L85 PathProgramCache]: Analyzing trace with hash 427229528, now seen corresponding path program 6 times [2023-12-09 15:35:22,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:35:22,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077815270] [2023-12-09 15:35:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:35:22,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:35:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:35:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:35:23,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:35:23,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077815270] [2023-12-09 15:35:23,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077815270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:35:23,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129204761] [2023-12-09 15:35:23,491 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:35:23,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:35:23,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:35:23,493 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 15:35:23,501 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 15:35:23,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:35:23,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:35:23,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-09 15:35:23,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:35:24,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2023-12-09 15:35:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:35:24,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:35:24,766 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:35:24,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-12-09 15:35:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:35:25,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129204761] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:35:25,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:35:25,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 24] total 68 [2023-12-09 15:35:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923011807] [2023-12-09 15:35:25,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:35:25,889 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-09 15:35:25,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:35:25,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-09 15:35:25,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=3981, Unknown=0, NotChecked=0, Total=4556 [2023-12-09 15:35:25,898 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-12-09 15:35:25,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1138 places, 9648 transitions, 191858 flow. Second operand has 68 states, 68 states have (on average 49.30882352941177) internal successors, (3353), 68 states have internal predecessors, (3353), 0 states have call successors, (0), 0 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 15:35:25,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:35:25,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-12-09 15:35:25,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:22,238 INFO L124 PetriNetUnfolderBase]: 18138/37850 cut-off events. [2023-12-09 15:36:22,238 INFO L125 PetriNetUnfolderBase]: For 365477/368333 co-relation queries the response was YES. [2023-12-09 15:36:22,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340645 conditions, 37850 events. 18138/37850 cut-off events. For 365477/368333 co-relation queries the response was YES. Maximal size of possible extension queue 1720. Compared 400644 event pairs, 152 based on Foata normal form. 427/36277 useless extension candidates. Maximal degree in co-relation 247691. Up to 20934 conditions per place. [2023-12-09 15:36:22,658 INFO L140 encePairwiseOnDemand]: 92/140 looper letters, 5718 selfloop transitions, 3666 changer transitions 1161/10582 dead transitions. [2023-12-09 15:36:22,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1316 places, 10582 transitions, 230613 flow [2023-12-09 15:36:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-12-09 15:36:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2023-12-09 15:36:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 9079 transitions. [2023-12-09 15:36:22,665 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3622905027932961 [2023-12-09 15:36:22,665 INFO L72 ComplementDD]: Start complementDD. Operand 179 states and 9079 transitions. [2023-12-09 15:36:22,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 179 states and 9079 transitions. [2023-12-09 15:36:22,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:22,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 179 states and 9079 transitions. [2023-12-09 15:36:22,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 180 states, 179 states have (on average 50.720670391061454) internal successors, (9079), 179 states have internal predecessors, (9079), 0 states have call successors, (0), 0 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 15:36:22,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 180 states, 180 states have (on average 140.0) internal successors, (25200), 180 states have internal predecessors, (25200), 0 states have call successors, (0), 0 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 15:36:22,740 INFO L81 ComplementDD]: Finished complementDD. Result has 180 states, 180 states have (on average 140.0) internal successors, (25200), 180 states have internal predecessors, (25200), 0 states have call successors, (0), 0 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 15:36:22,749 INFO L308 CegarLoopForPetriNet]: 125 programPoint places, 1191 predicate places. [2023-12-09 15:36:22,749 INFO L500 AbstractCegarLoop]: Abstraction has has 1316 places, 10582 transitions, 230613 flow [2023-12-09 15:36:22,749 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 49.30882352941177) internal successors, (3353), 68 states have internal predecessors, (3353), 0 states have call successors, (0), 0 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 15:36:22,750 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:22,750 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:22,757 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 15:36:22,950 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,SelfDestructingSolverStorable13 [2023-12-09 15:36:22,950 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 15:36:22,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:22,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1587244054, now seen corresponding path program 7 times [2023-12-09 15:36:22,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:22,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764191474] [2023-12-09 15:36:22,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:22,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:23,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:23,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764191474] [2023-12-09 15:36:23,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764191474] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:23,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065841831] [2023-12-09 15:36:23,873 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:36:23,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:23,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:23,880 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 15:36:23,882 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 15:36:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:23,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-09 15:36:23,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:24,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:36:24,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-12-09 15:36:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:24,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:25,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:36:25,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-12-09 15:36:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:25,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065841831] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:25,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:25,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 24, 24] total 65 [2023-12-09 15:36:25,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148973353] [2023-12-09 15:36:25,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:25,837 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-12-09 15:36:25,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:25,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-12-09 15:36:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=3692, Unknown=0, NotChecked=0, Total=4160 [2023-12-09 15:36:25,840 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 140 [2023-12-09 15:36:25,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1316 places, 10582 transitions, 230613 flow. Second operand has 65 states, 65 states have (on average 49.2) internal successors, (3198), 65 states have internal predecessors, (3198), 0 states have call successors, (0), 0 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 15:36:25,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:25,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 140 [2023-12-09 15:36:25,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:36:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2023-12-09 15:36:53,429 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:36:53,430 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:36:53,430 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:36:53,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-09 15:36:53,634 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,SelfDestructingSolverStorable14 [2023-12-09 15:36:53,634 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (65states, 46/140 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 88825 conditions, 9004 events (4064/9003 cut-off events. For 81860/83235 co-relation queries the response was YES. Maximal size of possible extension queue 1338. Compared 92417 event pairs, 92 based on Foata normal form. 148/9909 useless extension candidates. Maximal degree in co-relation 63756. Up to 3381 conditions per place.). [2023-12-09 15:36:53,636 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:36:53,636 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:36:53,636 INFO L457 BasicCegarLoop]: Path program histogram: [7, 3, 2, 1, 1, 1] [2023-12-09 15:36:53,638 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:36:53,638 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:36:53,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:36:53 BasicIcfg [2023-12-09 15:36:53,641 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:36:53,641 INFO L158 Benchmark]: Toolchain (without parser) took 258882.92ms. Allocated memory was 299.9MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 246.5MB in the beginning and 752.7MB in the end (delta: -506.2MB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-09 15:36:53,641 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 217.1MB. Free memory is still 166.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:36:53,641 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.74ms. Allocated memory is still 299.9MB. Free memory was 246.1MB in the beginning and 234.5MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:36:53,641 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.84ms. Allocated memory is still 299.9MB. Free memory was 234.5MB in the beginning and 232.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:36:53,641 INFO L158 Benchmark]: Boogie Preprocessor took 28.70ms. Allocated memory is still 299.9MB. Free memory was 232.2MB in the beginning and 230.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:36:53,642 INFO L158 Benchmark]: RCFGBuilder took 402.68ms. Allocated memory is still 299.9MB. Free memory was 230.8MB in the beginning and 205.2MB in the end (delta: 25.6MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-12-09 15:36:53,642 INFO L158 Benchmark]: TraceAbstraction took 258171.49ms. Allocated memory was 299.9MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 204.6MB in the beginning and 752.7MB in the end (delta: -548.1MB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-09 15:36:53,643 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 217.1MB. Free memory is still 166.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 239.74ms. Allocated memory is still 299.9MB. Free memory was 246.1MB in the beginning and 234.5MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.84ms. Allocated memory is still 299.9MB. Free memory was 234.5MB in the beginning and 232.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.70ms. Allocated memory is still 299.9MB. Free memory was 232.2MB in the beginning and 230.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 402.68ms. Allocated memory is still 299.9MB. Free memory was 230.8MB in the beginning and 205.2MB in the end (delta: 25.6MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * TraceAbstraction took 258171.49ms. Allocated memory was 299.9MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 204.6MB in the beginning and 752.7MB in the end (delta: -548.1MB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (65states, 46/140 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 88825 conditions, 9004 events (4064/9003 cut-off events. For 81860/83235 co-relation queries the response was YES. Maximal size of possible extension queue 1338. Compared 92417 event pairs, 92 based on Foata normal form. 148/9909 useless extension candidates. Maximal degree in co-relation 63756. Up to 3381 conditions per place.). - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (65states, 46/140 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 88825 conditions, 9004 events (4064/9003 cut-off events. For 81860/83235 co-relation queries the response was YES. Maximal size of possible extension queue 1338. Compared 92417 event pairs, 92 based on Foata normal form. 148/9909 useless extension candidates. Maximal degree in co-relation 63756. Up to 3381 conditions per place.). - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (65states, 46/140 universal loopers) in iteration 15,while PetriNetUnfolder was constructing finite prefix that currently has 88825 conditions, 9004 events (4064/9003 cut-off events. For 81860/83235 co-relation queries the response was YES. Maximal size of possible extension queue 1338. Compared 92417 event pairs, 92 based on Foata normal form. 148/9909 useless extension candidates. Maximal degree in co-relation 63756. Up to 3381 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 153 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: 258.1s, OverallIterations: 15, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 228.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12813 SdHoareTripleChecker+Valid, 16.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12813 mSDsluCounter, 21717 SdHoareTripleChecker+Invalid, 13.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 243 IncrementalHoareTripleChecker+Unchecked, 20839 mSDsCounter, 2624 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35117 IncrementalHoareTripleChecker+Invalid, 37984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2624 mSolverCounterUnsat, 878 mSDtfsCounter, 35117 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4122 GetRequests, 2268 SyntacticMatches, 3 SemanticMatches, 1851 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 168008 ImplicationChecksByTransitivity, 66.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230613occurred in iteration=14, InterpolantAutomatonStates: 1205, 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, 0.7s SatisfiabilityAnalysisTime, 25.4s InterpolantComputationTime, 3052 NumberOfCodeBlocks, 3025 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 4277 ConstructedInterpolants, 25 QuantifiedInterpolants, 44067 SizeOfPredicates, 213 NumberOfNonLiveVariables, 2791 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 35 InterpolantComputations, 5 PerfectInterpolantSequences, 67/393 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown