/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/test-easy1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:36:04,909 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:36:04,976 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 15:36:05,004 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:36:05,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:36:05,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:36:05,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:36:05,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:36:05,006 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:36:05,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:36:05,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:36:05,010 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:36:05,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:36:05,011 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:36:05,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:36:05,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:36:05,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:36:05,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:36:05,011 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:36:05,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:36:05,012 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:36:05,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:36:05,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:36:05,012 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:36:05,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:36:05,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:36:05,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:36:05,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:36:05,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:36:05,014 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:36:05,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:36:05,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:36:05,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:36:05,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:36:05,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:36:05,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:36:05,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:36:05,198 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:36:05,198 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:36:05,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-12-09 15:36:06,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:36:06,311 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:36:06,312 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy1.wvr.c [2023-12-09 15:36:06,317 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdee97ab0/96099d507bf8407994a524a6b605dca6/FLAG8a1856ce6 [2023-12-09 15:36:06,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdee97ab0/96099d507bf8407994a524a6b605dca6 [2023-12-09 15:36:06,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:36:06,329 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:36:06,330 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:36:06,330 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:36:06,333 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:36:06,333 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,334 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bca87bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06, skipping insertion in model container [2023-12-09 15:36:06,335 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,349 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:36:06,449 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/test-easy1.wvr.c[1902,1915] [2023-12-09 15:36:06,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:36:06,458 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:36:06,469 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/test-easy1.wvr.c[1902,1915] [2023-12-09 15:36:06,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:36:06,480 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:36:06,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06 WrapperNode [2023-12-09 15:36:06,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:36:06,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:36:06,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:36:06,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:36:06,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,491 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,503 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-12-09 15:36:06,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:36:06,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:36:06,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:36:06,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:36:06,509 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,514 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:36:06,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:36:06,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:36:06,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:36:06,519 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (1/1) ... [2023-12-09 15:36:06,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:36:06,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:06,546 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 15:36:06,571 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 15:36:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:36:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:36:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:36:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:36:06,579 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:36:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:36:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:36:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:36:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:36:06,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:36:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:36:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:36:06,582 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 15:36:06,668 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:36:06,670 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:36:06,841 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:36:06,848 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:36:06,849 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 15:36:06,850 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:36:06 BoogieIcfgContainer [2023-12-09 15:36:06,850 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:36:06,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:36:06,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:36:06,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:36:06,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:36:06" (1/3) ... [2023-12-09 15:36:06,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47046eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:36:06, skipping insertion in model container [2023-12-09 15:36:06,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:36:06" (2/3) ... [2023-12-09 15:36:06,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47046eba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:36:06, skipping insertion in model container [2023-12-09 15:36:06,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:36:06" (3/3) ... [2023-12-09 15:36:06,858 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2023-12-09 15:36:06,871 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:36:06,871 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:36:06,871 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:36:06,939 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:36:06,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 84 transitions, 182 flow [2023-12-09 15:36:07,017 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-12-09 15:36:07,018 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:36:07,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 6/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2023-12-09 15:36:07,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 84 transitions, 182 flow [2023-12-09 15:36:07,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 73 transitions, 158 flow [2023-12-09 15:36:07,031 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:36:07,046 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;@65ef2832, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:36:07,046 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:36:07,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:36:07,075 INFO L124 PetriNetUnfolderBase]: 6/72 cut-off events. [2023-12-09 15:36:07,075 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:36:07,075 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:07,076 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:07,077 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 15:36:07,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:07,081 INFO L85 PathProgramCache]: Analyzing trace with hash -862175159, now seen corresponding path program 1 times [2023-12-09 15:36:07,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:07,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264703571] [2023-12-09 15:36:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:07,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:07,655 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 15:36:07,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:07,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264703571] [2023-12-09 15:36:07,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264703571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:07,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:07,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:36:07,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467331324] [2023-12-09 15:36:07,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:07,666 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:36:07,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:07,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:36:07,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:36:07,705 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2023-12-09 15:36:07,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 15:36:07,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:07,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2023-12-09 15:36:07,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:07,880 INFO L124 PetriNetUnfolderBase]: 64/223 cut-off events. [2023-12-09 15:36:07,881 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-12-09 15:36:07,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 223 events. 64/223 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 813 event pairs, 30 based on Foata normal form. 3/189 useless extension candidates. Maximal degree in co-relation 260. Up to 91 conditions per place. [2023-12-09 15:36:07,885 INFO L140 encePairwiseOnDemand]: 70/84 looper letters, 33 selfloop transitions, 5 changer transitions 7/84 dead transitions. [2023-12-09 15:36:07,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 84 transitions, 279 flow [2023-12-09 15:36:07,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:36:07,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:36:07,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 494 transitions. [2023-12-09 15:36:07,897 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6534391534391535 [2023-12-09 15:36:07,898 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 494 transitions. [2023-12-09 15:36:07,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 494 transitions. [2023-12-09 15:36:07,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:07,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 494 transitions. [2023-12-09 15:36:07,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 54.888888888888886) internal successors, (494), 9 states have internal predecessors, (494), 0 states have call successors, (0), 0 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 15:36:07,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 15:36:07,907 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 84.0) internal successors, (840), 10 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 15:36:07,910 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 8 predicate places. [2023-12-09 15:36:07,910 INFO L500 AbstractCegarLoop]: Abstraction has has 82 places, 84 transitions, 279 flow [2023-12-09 15:36:07,910 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 7 states have internal predecessors, (365), 0 states have call successors, (0), 0 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 15:36:07,910 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:07,910 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:07,911 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:36:07,911 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 15:36:07,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:07,911 INFO L85 PathProgramCache]: Analyzing trace with hash -245989812, now seen corresponding path program 1 times [2023-12-09 15:36:07,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:07,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063484648] [2023-12-09 15:36:07,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:07,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:08,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:08,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063484648] [2023-12-09 15:36:08,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063484648] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:08,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752159433] [2023-12-09 15:36:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:08,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:08,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:08,148 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 15:36:08,151 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 15:36:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:08,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:36:08,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:08,502 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752159433] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:08,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:36:08,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2023-12-09 15:36:08,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891651936] [2023-12-09 15:36:08,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:08,637 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:36:08,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:08,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:36:08,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:36:08,640 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2023-12-09 15:36:08,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 15:36:08,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:08,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2023-12-09 15:36:08,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:08,759 INFO L124 PetriNetUnfolderBase]: 62/264 cut-off events. [2023-12-09 15:36:08,759 INFO L125 PetriNetUnfolderBase]: For 124/148 co-relation queries the response was YES. [2023-12-09 15:36:08,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 264 events. 62/264 cut-off events. For 124/148 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1066 event pairs, 16 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 383. Up to 117 conditions per place. [2023-12-09 15:36:08,763 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 54 selfloop transitions, 12 changer transitions 9/114 dead transitions. [2023-12-09 15:36:08,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 114 transitions, 567 flow [2023-12-09 15:36:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:36:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:36:08,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 402 transitions. [2023-12-09 15:36:08,766 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6836734693877551 [2023-12-09 15:36:08,766 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 402 transitions. [2023-12-09 15:36:08,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 402 transitions. [2023-12-09 15:36:08,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:08,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 402 transitions. [2023-12-09 15:36:08,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 57.42857142857143) internal successors, (402), 7 states have internal predecessors, (402), 0 states have call successors, (0), 0 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 15:36:08,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 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 15:36:08,771 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 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 15:36:08,772 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2023-12-09 15:36:08,772 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 567 flow [2023-12-09 15:36:08,772 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 15:36:08,772 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:08,773 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:08,779 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 15:36:08,976 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:08,977 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 15:36:08,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1780232988, now seen corresponding path program 2 times [2023-12-09 15:36:08,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:08,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371419362] [2023-12-09 15:36:08,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:08,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:09,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:09,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371419362] [2023-12-09 15:36:09,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371419362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:09,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:09,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:36:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190037982] [2023-12-09 15:36:09,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:09,137 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:36:09,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:36:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:36:09,138 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2023-12-09 15:36:09,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 567 flow. Second operand has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 15:36:09,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:09,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2023-12-09 15:36:09,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:09,239 INFO L124 PetriNetUnfolderBase]: 59/248 cut-off events. [2023-12-09 15:36:09,240 INFO L125 PetriNetUnfolderBase]: For 226/280 co-relation queries the response was YES. [2023-12-09 15:36:09,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 248 events. 59/248 cut-off events. For 226/280 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 943 event pairs, 3 based on Foata normal form. 9/230 useless extension candidates. Maximal degree in co-relation 479. Up to 104 conditions per place. [2023-12-09 15:36:09,243 INFO L140 encePairwiseOnDemand]: 74/84 looper letters, 51 selfloop transitions, 7 changer transitions 14/111 dead transitions. [2023-12-09 15:36:09,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 693 flow [2023-12-09 15:36:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:36:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:36:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 395 transitions. [2023-12-09 15:36:09,244 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6717687074829932 [2023-12-09 15:36:09,244 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 395 transitions. [2023-12-09 15:36:09,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 395 transitions. [2023-12-09 15:36:09,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:09,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 395 transitions. [2023-12-09 15:36:09,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 56.42857142857143) internal successors, (395), 7 states have internal predecessors, (395), 0 states have call successors, (0), 0 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 15:36:09,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 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 15:36:09,247 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 84.0) internal successors, (672), 8 states have internal predecessors, (672), 0 states have call successors, (0), 0 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 15:36:09,248 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2023-12-09 15:36:09,248 INFO L500 AbstractCegarLoop]: Abstraction has has 94 places, 111 transitions, 693 flow [2023-12-09 15:36:09,249 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 15:36:09,249 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:09,249 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:09,249 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:36:09,249 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 15:36:09,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1425697040, now seen corresponding path program 1 times [2023-12-09 15:36:09,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:09,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598866647] [2023-12-09 15:36:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:09,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:09,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:09,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598866647] [2023-12-09 15:36:09,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598866647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:09,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:09,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:36:09,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922800470] [2023-12-09 15:36:09,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:09,395 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:36:09,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:36:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:36:09,398 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 84 [2023-12-09 15:36:09,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 111 transitions, 693 flow. Second operand has 7 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 15:36:09,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:09,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 84 [2023-12-09 15:36:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:09,503 INFO L124 PetriNetUnfolderBase]: 51/228 cut-off events. [2023-12-09 15:36:09,503 INFO L125 PetriNetUnfolderBase]: For 338/405 co-relation queries the response was YES. [2023-12-09 15:36:09,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 228 events. 51/228 cut-off events. For 338/405 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 785 event pairs, 3 based on Foata normal form. 8/215 useless extension candidates. Maximal degree in co-relation 510. Up to 98 conditions per place. [2023-12-09 15:36:09,505 INFO L140 encePairwiseOnDemand]: 73/84 looper letters, 49 selfloop transitions, 13 changer transitions 14/115 dead transitions. [2023-12-09 15:36:09,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 115 transitions, 877 flow [2023-12-09 15:36:09,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:36:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:36:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 448 transitions. [2023-12-09 15:36:09,508 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-12-09 15:36:09,508 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 448 transitions. [2023-12-09 15:36:09,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 448 transitions. [2023-12-09 15:36:09,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:09,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 448 transitions. [2023-12-09 15:36:09,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 56.0) internal successors, (448), 8 states have internal predecessors, (448), 0 states have call successors, (0), 0 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 15:36:09,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 0 states have call successors, (0), 0 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 15:36:09,511 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 84.0) internal successors, (756), 9 states have internal predecessors, (756), 0 states have call successors, (0), 0 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 15:36:09,512 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2023-12-09 15:36:09,512 INFO L500 AbstractCegarLoop]: Abstraction has has 101 places, 115 transitions, 877 flow [2023-12-09 15:36:09,513 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.57142857142857) internal successors, (368), 7 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 15:36:09,513 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:09,513 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:09,513 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:36:09,513 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 15:36:09,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:09,514 INFO L85 PathProgramCache]: Analyzing trace with hash -175001361, now seen corresponding path program 1 times [2023-12-09 15:36:09,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:09,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189767805] [2023-12-09 15:36:09,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:09,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:09,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:09,710 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 15:36:09,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:09,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189767805] [2023-12-09 15:36:09,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189767805] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:09,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605643800] [2023-12-09 15:36:09,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:09,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:09,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:09,712 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 15:36:09,744 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 15:36:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:09,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:36:09,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:09,997 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 15:36:09,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:10,142 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 15:36:10,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605643800] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:10,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:10,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2023-12-09 15:36:10,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47563284] [2023-12-09 15:36:10,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:10,143 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-09 15:36:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:10,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-09 15:36:10,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-12-09 15:36:10,145 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:10,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 115 transitions, 877 flow. Second operand has 24 states, 24 states have (on average 49.916666666666664) internal successors, (1198), 24 states have internal predecessors, (1198), 0 states have call successors, (0), 0 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 15:36:10,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:10,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:10,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:11,541 INFO L124 PetriNetUnfolderBase]: 204/652 cut-off events. [2023-12-09 15:36:11,541 INFO L125 PetriNetUnfolderBase]: For 1469/1583 co-relation queries the response was YES. [2023-12-09 15:36:11,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2817 conditions, 652 events. 204/652 cut-off events. For 1469/1583 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3707 event pairs, 5 based on Foata normal form. 20/615 useless extension candidates. Maximal degree in co-relation 2044. Up to 354 conditions per place. [2023-12-09 15:36:11,545 INFO L140 encePairwiseOnDemand]: 62/84 looper letters, 138 selfloop transitions, 157 changer transitions 28/360 dead transitions. [2023-12-09 15:36:11,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 360 transitions, 3706 flow [2023-12-09 15:36:11,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-09 15:36:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2023-12-09 15:36:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 3499 transitions. [2023-12-09 15:36:11,552 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6036922015182885 [2023-12-09 15:36:11,552 INFO L72 ComplementDD]: Start complementDD. Operand 69 states and 3499 transitions. [2023-12-09 15:36:11,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 3499 transitions. [2023-12-09 15:36:11,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:11,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 69 states and 3499 transitions. [2023-12-09 15:36:11,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 70 states, 69 states have (on average 50.710144927536234) internal successors, (3499), 69 states have internal predecessors, (3499), 0 states have call successors, (0), 0 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 15:36:11,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 70 states, 70 states have (on average 84.0) internal successors, (5880), 70 states have internal predecessors, (5880), 0 states have call successors, (0), 0 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 15:36:11,569 INFO L81 ComplementDD]: Finished complementDD. Result has 70 states, 70 states have (on average 84.0) internal successors, (5880), 70 states have internal predecessors, (5880), 0 states have call successors, (0), 0 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 15:36:11,571 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 95 predicate places. [2023-12-09 15:36:11,571 INFO L500 AbstractCegarLoop]: Abstraction has has 169 places, 360 transitions, 3706 flow [2023-12-09 15:36:11,571 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 49.916666666666664) internal successors, (1198), 24 states have internal predecessors, (1198), 0 states have call successors, (0), 0 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 15:36:11,572 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:11,572 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:11,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:36:11,778 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:11,778 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 15:36:11,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:11,779 INFO L85 PathProgramCache]: Analyzing trace with hash -244281901, now seen corresponding path program 2 times [2023-12-09 15:36:11,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:11,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280911246] [2023-12-09 15:36:11,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:11,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:11,917 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 15:36:11,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280911246] [2023-12-09 15:36:11,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280911246] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782028726] [2023-12-09 15:36:11,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:36:11,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:11,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:11,922 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 15:36:11,934 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 15:36:11,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:36:11,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:11,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:36:11,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:12,070 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 15:36:12,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:12,228 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 15:36:12,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782028726] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:12,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:12,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2023-12-09 15:36:12,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087909321] [2023-12-09 15:36:12,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:12,229 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 15:36:12,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:12,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 15:36:12,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-12-09 15:36:12,231 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:12,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 360 transitions, 3706 flow. Second operand has 22 states, 22 states have (on average 49.18181818181818) internal successors, (1082), 22 states have internal predecessors, (1082), 0 states have call successors, (0), 0 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 15:36:12,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:12,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:12,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:12,611 INFO L124 PetriNetUnfolderBase]: 242/757 cut-off events. [2023-12-09 15:36:12,611 INFO L125 PetriNetUnfolderBase]: For 1993/2101 co-relation queries the response was YES. [2023-12-09 15:36:12,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 757 events. 242/757 cut-off events. For 1993/2101 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4516 event pairs, 3 based on Foata normal form. 10/704 useless extension candidates. Maximal degree in co-relation 3171. Up to 430 conditions per place. [2023-12-09 15:36:12,618 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 191 selfloop transitions, 181 changer transitions 45/454 dead transitions. [2023-12-09 15:36:12,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 454 transitions, 5587 flow [2023-12-09 15:36:12,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-09 15:36:12,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-12-09 15:36:12,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 964 transitions. [2023-12-09 15:36:12,623 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6040100250626567 [2023-12-09 15:36:12,623 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 964 transitions. [2023-12-09 15:36:12,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 964 transitions. [2023-12-09 15:36:12,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:12,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 964 transitions. [2023-12-09 15:36:12,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 50.73684210526316) internal successors, (964), 19 states have internal predecessors, (964), 0 states have call successors, (0), 0 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 15:36:12,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 84.0) internal successors, (1680), 20 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 15:36:12,632 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 84.0) internal successors, (1680), 20 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 15:36:12,634 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 113 predicate places. [2023-12-09 15:36:12,634 INFO L500 AbstractCegarLoop]: Abstraction has has 187 places, 454 transitions, 5587 flow [2023-12-09 15:36:12,635 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 49.18181818181818) internal successors, (1082), 22 states have internal predecessors, (1082), 0 states have call successors, (0), 0 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 15:36:12,635 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:12,635 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:12,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:36:12,841 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:12,842 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 15:36:12,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1735220909, now seen corresponding path program 3 times [2023-12-09 15:36:12,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:12,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411982536] [2023-12-09 15:36:12,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:12,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:12,986 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 15:36:12,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:12,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411982536] [2023-12-09 15:36:12,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411982536] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:12,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924262649] [2023-12-09 15:36:12,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:36:12,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:12,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:12,989 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 15:36:13,016 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 15:36:13,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:36:13,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:13,064 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:36:13,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:13,249 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 15:36:13,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:13,349 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 15:36:13,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924262649] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:13,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:13,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2023-12-09 15:36:13,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434162936] [2023-12-09 15:36:13,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:13,350 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-09 15:36:13,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:13,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-09 15:36:13,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-12-09 15:36:13,353 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:13,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 454 transitions, 5587 flow. Second operand has 24 states, 24 states have (on average 49.916666666666664) internal successors, (1198), 24 states have internal predecessors, (1198), 0 states have call successors, (0), 0 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 15:36:13,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:13,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:13,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:14,461 INFO L124 PetriNetUnfolderBase]: 404/1239 cut-off events. [2023-12-09 15:36:14,462 INFO L125 PetriNetUnfolderBase]: For 4226/4507 co-relation queries the response was YES. [2023-12-09 15:36:14,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7313 conditions, 1239 events. 404/1239 cut-off events. For 4226/4507 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 8847 event pairs, 2 based on Foata normal form. 47/1194 useless extension candidates. Maximal degree in co-relation 6125. Up to 726 conditions per place. [2023-12-09 15:36:14,470 INFO L140 encePairwiseOnDemand]: 62/84 looper letters, 230 selfloop transitions, 298 changer transitions 232/797 dead transitions. [2023-12-09 15:36:14,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 797 transitions, 11544 flow [2023-12-09 15:36:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-09 15:36:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-12-09 15:36:14,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2687 transitions. [2023-12-09 15:36:14,474 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6035489667565139 [2023-12-09 15:36:14,474 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2687 transitions. [2023-12-09 15:36:14,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2687 transitions. [2023-12-09 15:36:14,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:14,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2687 transitions. [2023-12-09 15:36:14,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 50.698113207547166) internal successors, (2687), 53 states have internal predecessors, (2687), 0 states have call successors, (0), 0 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 15:36:14,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 84.0) internal successors, (4536), 54 states have internal predecessors, (4536), 0 states have call successors, (0), 0 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 15:36:14,483 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 84.0) internal successors, (4536), 54 states have internal predecessors, (4536), 0 states have call successors, (0), 0 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 15:36:14,483 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 165 predicate places. [2023-12-09 15:36:14,483 INFO L500 AbstractCegarLoop]: Abstraction has has 239 places, 797 transitions, 11544 flow [2023-12-09 15:36:14,484 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 49.916666666666664) internal successors, (1198), 24 states have internal predecessors, (1198), 0 states have call successors, (0), 0 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 15:36:14,484 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:14,484 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:14,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:36:14,689 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:14,689 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 15:36:14,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1834282861, now seen corresponding path program 4 times [2023-12-09 15:36:14,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:14,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273299947] [2023-12-09 15:36:14,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:14,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:14,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:14,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273299947] [2023-12-09 15:36:14,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273299947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:14,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:36:14,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-09 15:36:14,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786781855] [2023-12-09 15:36:14,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:14,852 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 15:36:14,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:14,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 15:36:14,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-12-09 15:36:14,853 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:14,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 797 transitions, 11544 flow. Second operand has 12 states, 12 states have (on average 49.5) internal successors, (594), 12 states have internal predecessors, (594), 0 states have call successors, (0), 0 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 15:36:14,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:14,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:14,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:15,211 INFO L124 PetriNetUnfolderBase]: 422/1306 cut-off events. [2023-12-09 15:36:15,211 INFO L125 PetriNetUnfolderBase]: For 5254/5505 co-relation queries the response was YES. [2023-12-09 15:36:15,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8616 conditions, 1306 events. 422/1306 cut-off events. For 5254/5505 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9458 event pairs, 4 based on Foata normal form. 25/1233 useless extension candidates. Maximal degree in co-relation 6110. Up to 750 conditions per place. [2023-12-09 15:36:15,222 INFO L140 encePairwiseOnDemand]: 67/84 looper letters, 256 selfloop transitions, 312 changer transitions 241/846 dead transitions. [2023-12-09 15:36:15,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 846 transitions, 13760 flow [2023-12-09 15:36:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-09 15:36:15,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-12-09 15:36:15,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1163 transitions. [2023-12-09 15:36:15,224 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6019668737060041 [2023-12-09 15:36:15,224 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1163 transitions. [2023-12-09 15:36:15,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1163 transitions. [2023-12-09 15:36:15,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:15,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1163 transitions. [2023-12-09 15:36:15,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 50.56521739130435) internal successors, (1163), 23 states have internal predecessors, (1163), 0 states have call successors, (0), 0 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 15:36:15,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 84.0) internal successors, (2016), 24 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 15:36:15,229 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 84.0) internal successors, (2016), 24 states have internal predecessors, (2016), 0 states have call successors, (0), 0 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 15:36:15,230 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 187 predicate places. [2023-12-09 15:36:15,230 INFO L500 AbstractCegarLoop]: Abstraction has has 261 places, 846 transitions, 13760 flow [2023-12-09 15:36:15,230 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 49.5) internal successors, (594), 12 states have internal predecessors, (594), 0 states have call successors, (0), 0 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 15:36:15,230 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:15,230 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:15,230 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:36:15,230 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 15:36:15,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:15,231 INFO L85 PathProgramCache]: Analyzing trace with hash -715921239, now seen corresponding path program 5 times [2023-12-09 15:36:15,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:15,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510228244] [2023-12-09 15:36:15,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:15,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:15,352 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 15:36:15,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:15,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510228244] [2023-12-09 15:36:15,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510228244] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:15,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321530862] [2023-12-09 15:36:15,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:36:15,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:15,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:15,356 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 15:36:15,377 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 15:36:15,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:36:15,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:15,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-09 15:36:15,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:15,488 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 15:36:15,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:15,645 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 15:36:15,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321530862] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:15,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:15,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 20 [2023-12-09 15:36:15,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363494446] [2023-12-09 15:36:15,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:15,646 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:36:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:15,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:36:15,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:36:15,648 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:15,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 846 transitions, 13760 flow. Second operand has 20 states, 20 states have (on average 49.35) internal successors, (987), 20 states have internal predecessors, (987), 0 states have call successors, (0), 0 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 15:36:15,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:15,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:15,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:16,296 INFO L124 PetriNetUnfolderBase]: 594/1862 cut-off events. [2023-12-09 15:36:16,297 INFO L125 PetriNetUnfolderBase]: For 9178/9673 co-relation queries the response was YES. [2023-12-09 15:36:16,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13486 conditions, 1862 events. 594/1862 cut-off events. For 9178/9673 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14907 event pairs, 1 based on Foata normal form. 54/1773 useless extension candidates. Maximal degree in co-relation 10012. Up to 1052 conditions per place. [2023-12-09 15:36:16,312 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 207 selfloop transitions, 598 changer transitions 344/1186 dead transitions. [2023-12-09 15:36:16,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1186 transitions, 21582 flow [2023-12-09 15:36:16,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 15:36:16,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 15:36:16,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1573 transitions. [2023-12-09 15:36:16,314 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6040706605222734 [2023-12-09 15:36:16,315 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1573 transitions. [2023-12-09 15:36:16,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1573 transitions. [2023-12-09 15:36:16,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:16,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1573 transitions. [2023-12-09 15:36:16,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 50.74193548387097) internal successors, (1573), 31 states have internal predecessors, (1573), 0 states have call successors, (0), 0 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 15:36:16,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 84.0) internal successors, (2688), 32 states have internal predecessors, (2688), 0 states have call successors, (0), 0 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 15:36:16,320 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 84.0) internal successors, (2688), 32 states have internal predecessors, (2688), 0 states have call successors, (0), 0 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 15:36:16,320 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 217 predicate places. [2023-12-09 15:36:16,320 INFO L500 AbstractCegarLoop]: Abstraction has has 291 places, 1186 transitions, 21582 flow [2023-12-09 15:36:16,321 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 49.35) internal successors, (987), 20 states have internal predecessors, (987), 0 states have call successors, (0), 0 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 15:36:16,321 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:16,321 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:16,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:36:16,528 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:16,528 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 15:36:16,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:16,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1847849327, now seen corresponding path program 6 times [2023-12-09 15:36:16,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:16,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601168460] [2023-12-09 15:36:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:16,696 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 15:36:16,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:16,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601168460] [2023-12-09 15:36:16,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601168460] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:16,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885012072] [2023-12-09 15:36:16,696 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:36:16,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:16,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:16,697 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 15:36:16,732 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 15:36:16,753 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:36:16,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:16,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:36:16,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:16,954 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 15:36:16,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:36:17,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885012072] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:17,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:17,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2023-12-09 15:36:17,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115880453] [2023-12-09 15:36:17,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:17,073 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-09 15:36:17,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:17,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-09 15:36:17,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-12-09 15:36:17,075 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:17,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 1186 transitions, 21582 flow. Second operand has 24 states, 24 states have (on average 49.875) internal successors, (1197), 24 states have internal predecessors, (1197), 0 states have call successors, (0), 0 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 15:36:17,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:17,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:17,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:18,660 INFO L124 PetriNetUnfolderBase]: 1035/3231 cut-off events. [2023-12-09 15:36:18,660 INFO L125 PetriNetUnfolderBase]: For 17614/18369 co-relation queries the response was YES. [2023-12-09 15:36:18,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25711 conditions, 3231 events. 1035/3231 cut-off events. For 17614/18369 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 28967 event pairs, 3 based on Foata normal form. 65/3046 useless extension candidates. Maximal degree in co-relation 22828. Up to 1815 conditions per place. [2023-12-09 15:36:18,690 INFO L140 encePairwiseOnDemand]: 61/84 looper letters, 513 selfloop transitions, 954 changer transitions 565/2069 dead transitions. [2023-12-09 15:36:18,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 2069 transitions, 41688 flow [2023-12-09 15:36:18,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-09 15:36:18,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-12-09 15:36:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 2901 transitions. [2023-12-09 15:36:18,699 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6058897243107769 [2023-12-09 15:36:18,699 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 2901 transitions. [2023-12-09 15:36:18,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 2901 transitions. [2023-12-09 15:36:18,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:18,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 2901 transitions. [2023-12-09 15:36:18,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 50.89473684210526) internal successors, (2901), 57 states have internal predecessors, (2901), 0 states have call successors, (0), 0 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 15:36:18,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 84.0) internal successors, (4872), 58 states have internal predecessors, (4872), 0 states have call successors, (0), 0 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 15:36:18,715 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 84.0) internal successors, (4872), 58 states have internal predecessors, (4872), 0 states have call successors, (0), 0 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 15:36:18,716 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 273 predicate places. [2023-12-09 15:36:18,716 INFO L500 AbstractCegarLoop]: Abstraction has has 347 places, 2069 transitions, 41688 flow [2023-12-09 15:36:18,722 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 49.875) internal successors, (1197), 24 states have internal predecessors, (1197), 0 states have call successors, (0), 0 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 15:36:18,722 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:18,722 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:18,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:36:18,927 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:18,928 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 15:36:18,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:18,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1583099591, now seen corresponding path program 7 times [2023-12-09 15:36:18,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:18,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329127040] [2023-12-09 15:36:18,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:18,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:19,037 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 15:36:19,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:19,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329127040] [2023-12-09 15:36:19,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329127040] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:19,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425554484] [2023-12-09 15:36:19,038 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:36:19,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:19,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:19,039 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 15:36:19,041 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 15:36:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:19,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:36:19,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:19,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:36:19,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425554484] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:19,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:36:19,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 19 [2023-12-09 15:36:19,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537370045] [2023-12-09 15:36:19,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:19,283 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:36:19,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:19,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:36:19,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:36:19,284 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:19,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 2069 transitions, 41688 flow. Second operand has 11 states, 11 states have (on average 49.72727272727273) internal successors, (547), 11 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 15:36:19,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:19,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:19,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:20,583 INFO L124 PetriNetUnfolderBase]: 1125/3491 cut-off events. [2023-12-09 15:36:20,584 INFO L125 PetriNetUnfolderBase]: For 22395/23298 co-relation queries the response was YES. [2023-12-09 15:36:20,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30502 conditions, 3491 events. 1125/3491 cut-off events. For 22395/23298 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 31876 event pairs, 1 based on Foata normal form. 38/3259 useless extension candidates. Maximal degree in co-relation 21870. Up to 2389 conditions per place. [2023-12-09 15:36:20,609 INFO L140 encePairwiseOnDemand]: 66/84 looper letters, 1477 selfloop transitions, 114 changer transitions 616/2244 dead transitions. [2023-12-09 15:36:20,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 2244 transitions, 49696 flow [2023-12-09 15:36:20,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-09 15:36:20,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-12-09 15:36:20,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1132 transitions. [2023-12-09 15:36:20,611 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6125541125541125 [2023-12-09 15:36:20,611 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1132 transitions. [2023-12-09 15:36:20,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1132 transitions. [2023-12-09 15:36:20,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:20,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1132 transitions. [2023-12-09 15:36:20,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 51.45454545454545) internal successors, (1132), 22 states have internal predecessors, (1132), 0 states have call successors, (0), 0 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 15:36:20,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 84.0) internal successors, (1932), 23 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 15:36:20,614 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 84.0) internal successors, (1932), 23 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 15:36:20,615 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 294 predicate places. [2023-12-09 15:36:20,615 INFO L500 AbstractCegarLoop]: Abstraction has has 368 places, 2244 transitions, 49696 flow [2023-12-09 15:36:20,615 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 49.72727272727273) internal successors, (547), 11 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 15:36:20,615 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:20,615 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:20,622 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 15:36:20,819 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:20,822 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 15:36:20,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:20,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1849714691, now seen corresponding path program 8 times [2023-12-09 15:36:20,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:20,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373974233] [2023-12-09 15:36:20,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:20,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:21,019 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 15:36:21,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:21,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373974233] [2023-12-09 15:36:21,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373974233] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:21,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722375046] [2023-12-09 15:36:21,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:36:21,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:21,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:21,022 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 15:36:21,026 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 15:36:21,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:36:21,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:21,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:36:21,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:21,277 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 15:36:21,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:36:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722375046] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:21,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:21,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 24 [2023-12-09 15:36:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450437227] [2023-12-09 15:36:21,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:21,395 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-09 15:36:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-09 15:36:21,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-12-09 15:36:21,396 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:21,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 2244 transitions, 49696 flow. Second operand has 24 states, 24 states have (on average 49.875) internal successors, (1197), 24 states have internal predecessors, (1197), 0 states have call successors, (0), 0 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 15:36:21,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:21,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:21,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:24,135 INFO L124 PetriNetUnfolderBase]: 1453/4348 cut-off events. [2023-12-09 15:36:24,136 INFO L125 PetriNetUnfolderBase]: For 28381/29606 co-relation queries the response was YES. [2023-12-09 15:36:24,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42059 conditions, 4348 events. 1453/4348 cut-off events. For 28381/29606 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 40786 event pairs, 1 based on Foata normal form. 51/4077 useless extension candidates. Maximal degree in co-relation 31691. Up to 3095 conditions per place. [2023-12-09 15:36:24,170 INFO L140 encePairwiseOnDemand]: 61/84 looper letters, 1220 selfloop transitions, 990 changer transitions 699/2946 dead transitions. [2023-12-09 15:36:24,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 2946 transitions, 70755 flow [2023-12-09 15:36:24,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-12-09 15:36:24,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-12-09 15:36:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3336 transitions. [2023-12-09 15:36:24,173 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6017316017316018 [2023-12-09 15:36:24,173 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 3336 transitions. [2023-12-09 15:36:24,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 3336 transitions. [2023-12-09 15:36:24,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:24,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 3336 transitions. [2023-12-09 15:36:24,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 50.54545454545455) internal successors, (3336), 66 states have internal predecessors, (3336), 0 states have call successors, (0), 0 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 15:36:24,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 84.0) internal successors, (5628), 67 states have internal predecessors, (5628), 0 states have call successors, (0), 0 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 15:36:24,183 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 84.0) internal successors, (5628), 67 states have internal predecessors, (5628), 0 states have call successors, (0), 0 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 15:36:24,183 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 359 predicate places. [2023-12-09 15:36:24,183 INFO L500 AbstractCegarLoop]: Abstraction has has 433 places, 2946 transitions, 70755 flow [2023-12-09 15:36:24,183 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 49.875) internal successors, (1197), 24 states have internal predecessors, (1197), 0 states have call successors, (0), 0 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 15:36:24,183 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:24,183 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:36:24,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-09 15:36:24,388 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,SelfDestructingSolverStorable11 [2023-12-09 15:36:24,388 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 15:36:24,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1254726589, now seen corresponding path program 9 times [2023-12-09 15:36:24,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:24,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922528753] [2023-12-09 15:36:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:24,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:24,509 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 15:36:24,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922528753] [2023-12-09 15:36:24,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922528753] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:24,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938196288] [2023-12-09 15:36:24,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:36:24,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:24,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:24,511 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 15:36:24,532 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 15:36:24,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:36:24,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:24,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-09 15:36:24,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:24,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:36:24,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938196288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:36:24,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:36:24,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 19 [2023-12-09 15:36:24,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235626028] [2023-12-09 15:36:24,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:36:24,750 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:36:24,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:24,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:36:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:36:24,751 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:24,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 2946 transitions, 70755 flow. Second operand has 11 states, 11 states have (on average 49.72727272727273) internal successors, (547), 11 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 15:36:24,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:24,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:24,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:27,494 INFO L124 PetriNetUnfolderBase]: 1751/5330 cut-off events. [2023-12-09 15:36:27,494 INFO L125 PetriNetUnfolderBase]: For 41267/43014 co-relation queries the response was YES. [2023-12-09 15:36:27,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55598 conditions, 5330 events. 1751/5330 cut-off events. For 41267/43014 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 52980 event pairs, 3 based on Foata normal form. 38/4952 useless extension candidates. Maximal degree in co-relation 49964. Up to 3812 conditions per place. [2023-12-09 15:36:27,542 INFO L140 encePairwiseOnDemand]: 66/84 looper letters, 2382 selfloop transitions, 264 changer transitions 853/3536 dead transitions. [2023-12-09 15:36:27,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 3536 transitions, 92596 flow [2023-12-09 15:36:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:36:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:36:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1094 transitions. [2023-12-09 15:36:27,544 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6201814058956916 [2023-12-09 15:36:27,544 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1094 transitions. [2023-12-09 15:36:27,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1094 transitions. [2023-12-09 15:36:27,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:27,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1094 transitions. [2023-12-09 15:36:27,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 52.095238095238095) internal successors, (1094), 21 states have internal predecessors, (1094), 0 states have call successors, (0), 0 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 15:36:27,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 84.0) internal successors, (1848), 22 states have internal predecessors, (1848), 0 states have call successors, (0), 0 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 15:36:27,547 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 84.0) internal successors, (1848), 22 states have internal predecessors, (1848), 0 states have call successors, (0), 0 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 15:36:27,548 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 379 predicate places. [2023-12-09 15:36:27,548 INFO L500 AbstractCegarLoop]: Abstraction has has 453 places, 3536 transitions, 92596 flow [2023-12-09 15:36:27,548 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 49.72727272727273) internal successors, (547), 11 states have internal predecessors, (547), 0 states have call successors, (0), 0 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 15:36:27,548 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:27,548 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:27,555 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 15:36:27,752 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,SelfDestructingSolverStorable12 [2023-12-09 15:36:27,753 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 15:36:27,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:27,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1132011332, now seen corresponding path program 10 times [2023-12-09 15:36:27,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:27,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186321093] [2023-12-09 15:36:27,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:36:27,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:27,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186321093] [2023-12-09 15:36:27,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186321093] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:27,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224749715] [2023-12-09 15:36:27,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:36:27,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:27,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:27,870 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 15:36:27,887 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 15:36:27,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:36:27,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:27,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:36:27,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:28,090 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:28,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:28,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224749715] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:28,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:28,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2023-12-09 15:36:28,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183500534] [2023-12-09 15:36:28,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:28,254 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-09 15:36:28,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-09 15:36:28,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2023-12-09 15:36:28,255 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:28,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 3536 transitions, 92596 flow. Second operand has 26 states, 26 states have (on average 50.07692307692308) internal successors, (1302), 26 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:28,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:28,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:28,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:35,100 INFO L124 PetriNetUnfolderBase]: 2504/7240 cut-off events. [2023-12-09 15:36:35,101 INFO L125 PetriNetUnfolderBase]: For 63997/67597 co-relation queries the response was YES. [2023-12-09 15:36:35,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83015 conditions, 7240 events. 2504/7240 cut-off events. For 63997/67597 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 74533 event pairs, 4 based on Foata normal form. 219/6928 useless extension candidates. Maximal degree in co-relation 76299. Up to 5404 conditions per place. [2023-12-09 15:36:35,166 INFO L140 encePairwiseOnDemand]: 60/84 looper letters, 405 selfloop transitions, 3345 changer transitions 1388/5175 dead transitions. [2023-12-09 15:36:35,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 5175 transitions, 146687 flow [2023-12-09 15:36:35,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-12-09 15:36:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2023-12-09 15:36:35,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 5755 transitions. [2023-12-09 15:36:35,171 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5957556935817805 [2023-12-09 15:36:35,171 INFO L72 ComplementDD]: Start complementDD. Operand 115 states and 5755 transitions. [2023-12-09 15:36:35,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 5755 transitions. [2023-12-09 15:36:35,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:35,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 115 states and 5755 transitions. [2023-12-09 15:36:35,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 116 states, 115 states have (on average 50.04347826086956) internal successors, (5755), 115 states have internal predecessors, (5755), 0 states have call successors, (0), 0 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 15:36:35,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 116 states, 116 states have (on average 84.0) internal successors, (9744), 116 states have internal predecessors, (9744), 0 states have call successors, (0), 0 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 15:36:35,188 INFO L81 ComplementDD]: Finished complementDD. Result has 116 states, 116 states have (on average 84.0) internal successors, (9744), 116 states have internal predecessors, (9744), 0 states have call successors, (0), 0 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 15:36:35,188 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 493 predicate places. [2023-12-09 15:36:35,188 INFO L500 AbstractCegarLoop]: Abstraction has has 567 places, 5175 transitions, 146687 flow [2023-12-09 15:36:35,189 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 50.07692307692308) internal successors, (1302), 26 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:36:35,189 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:35,189 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:35,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-09 15:36:35,404 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,SelfDestructingSolverStorable13 [2023-12-09 15:36:35,404 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 15:36:35,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:35,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1172580628, now seen corresponding path program 11 times [2023-12-09 15:36:35,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:35,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119758184] [2023-12-09 15:36:35,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:35,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:35,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:35,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:35,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119758184] [2023-12-09 15:36:35,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119758184] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:35,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297409014] [2023-12-09 15:36:35,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:36:35,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:35,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:35,498 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:36:35,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:36:35,552 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-12-09 15:36:35,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:35,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:36:35,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:35,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:35,909 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:35,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297409014] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:35,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:35,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-12-09 15:36:35,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144823690] [2023-12-09 15:36:35,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:35,909 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 15:36:35,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:35,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 15:36:35,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:36:35,910 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:35,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 5175 transitions, 146687 flow. Second operand has 23 states, 23 states have (on average 49.65217391304348) internal successors, (1142), 23 states have internal predecessors, (1142), 0 states have call successors, (0), 0 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 15:36:35,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:35,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:35,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:36:44,843 INFO L124 PetriNetUnfolderBase]: 3177/8888 cut-off events. [2023-12-09 15:36:44,843 INFO L125 PetriNetUnfolderBase]: For 81827/85425 co-relation queries the response was YES. [2023-12-09 15:36:44,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109359 conditions, 8888 events. 3177/8888 cut-off events. For 81827/85425 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 92964 event pairs, 2 based on Foata normal form. 124/8358 useless extension candidates. Maximal degree in co-relation 84620. Up to 6750 conditions per place. [2023-12-09 15:36:44,919 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 2954 selfloop transitions, 1867 changer transitions 1626/6484 dead transitions. [2023-12-09 15:36:44,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 6484 transitions, 196449 flow [2023-12-09 15:36:44,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-09 15:36:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-12-09 15:36:44,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 2694 transitions. [2023-12-09 15:36:44,922 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.605121293800539 [2023-12-09 15:36:44,922 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 2694 transitions. [2023-12-09 15:36:44,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 2694 transitions. [2023-12-09 15:36:44,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:36:44,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 2694 transitions. [2023-12-09 15:36:44,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 50.83018867924528) internal successors, (2694), 53 states have internal predecessors, (2694), 0 states have call successors, (0), 0 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 15:36:44,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 84.0) internal successors, (4536), 54 states have internal predecessors, (4536), 0 states have call successors, (0), 0 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 15:36:44,929 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 84.0) internal successors, (4536), 54 states have internal predecessors, (4536), 0 states have call successors, (0), 0 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 15:36:44,929 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 544 predicate places. [2023-12-09 15:36:44,929 INFO L500 AbstractCegarLoop]: Abstraction has has 618 places, 6484 transitions, 196449 flow [2023-12-09 15:36:44,929 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.65217391304348) internal successors, (1142), 23 states have internal predecessors, (1142), 0 states have call successors, (0), 0 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 15:36:44,929 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:36:44,929 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:44,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-09 15:36:45,134 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-09 15:36:45,134 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:36:45,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:36:45,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1895029122, now seen corresponding path program 12 times [2023-12-09 15:36:45,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:36:45,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282750933] [2023-12-09 15:36:45,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:36:45,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:36:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:36:45,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:45,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:36:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282750933] [2023-12-09 15:36:45,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282750933] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:36:45,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708985220] [2023-12-09 15:36:45,270 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:36:45,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:36:45,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:36:45,271 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:36:45,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 15:36:45,327 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:36:45,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:36:45,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:36:45,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:36:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:45,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:36:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:36:45,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708985220] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:36:45,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:36:45,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2023-12-09 15:36:45,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921267315] [2023-12-09 15:36:45,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:36:45,629 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-09 15:36:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:36:45,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-09 15:36:45,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2023-12-09 15:36:45,630 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:36:45,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 6484 transitions, 196449 flow. Second operand has 25 states, 25 states have (on average 50.08) internal successors, (1252), 25 states have internal predecessors, (1252), 0 states have call successors, (0), 0 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 15:36:45,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:36:45,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:36:45,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:37:05,571 INFO L124 PetriNetUnfolderBase]: 4936/14153 cut-off events. [2023-12-09 15:37:05,571 INFO L125 PetriNetUnfolderBase]: For 156760/163606 co-relation queries the response was YES. [2023-12-09 15:37:05,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185051 conditions, 14153 events. 4936/14153 cut-off events. For 156760/163606 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 162152 event pairs, 6 based on Foata normal form. 553/13662 useless extension candidates. Maximal degree in co-relation 137963. Up to 10673 conditions per place. [2023-12-09 15:37:05,701 INFO L140 encePairwiseOnDemand]: 60/84 looper letters, 1905 selfloop transitions, 5477 changer transitions 2816/10235 dead transitions. [2023-12-09 15:37:05,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 10235 transitions, 332030 flow [2023-12-09 15:37:05,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-12-09 15:37:05,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2023-12-09 15:37:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 6056 transitions. [2023-12-09 15:37:05,706 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6007936507936508 [2023-12-09 15:37:05,706 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 6056 transitions. [2023-12-09 15:37:05,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 6056 transitions. [2023-12-09 15:37:05,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:37:05,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 6056 transitions. [2023-12-09 15:37:05,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 50.46666666666667) internal successors, (6056), 120 states have internal predecessors, (6056), 0 states have call successors, (0), 0 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 15:37:05,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 84.0) internal successors, (10164), 121 states have internal predecessors, (10164), 0 states have call successors, (0), 0 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 15:37:05,722 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 84.0) internal successors, (10164), 121 states have internal predecessors, (10164), 0 states have call successors, (0), 0 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 15:37:05,722 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 663 predicate places. [2023-12-09 15:37:05,722 INFO L500 AbstractCegarLoop]: Abstraction has has 737 places, 10235 transitions, 332030 flow [2023-12-09 15:37:05,722 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 50.08) internal successors, (1252), 25 states have internal predecessors, (1252), 0 states have call successors, (0), 0 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 15:37:05,722 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:37:05,723 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:05,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-09 15:37:05,926 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-09 15:37:05,927 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:37:05,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:37:05,927 INFO L85 PathProgramCache]: Analyzing trace with hash 51200648, now seen corresponding path program 13 times [2023-12-09 15:37:05,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:37:05,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157518689] [2023-12-09 15:37:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:37:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:37:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:06,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:37:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157518689] [2023-12-09 15:37:06,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157518689] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:37:06,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921303895] [2023-12-09 15:37:06,022 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:37:06,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:06,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:37:06,023 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:37:06,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-09 15:37:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:06,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-09 15:37:06,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:37:06,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:06,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:37:06,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:06,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921303895] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:37:06,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:37:06,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-12-09 15:37:06,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199466242] [2023-12-09 15:37:06,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:37:06,361 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 15:37:06,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:37:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 15:37:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:37:06,362 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:37:06,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 10235 transitions, 332030 flow. Second operand has 23 states, 23 states have (on average 49.73913043478261) internal successors, (1144), 23 states have internal predecessors, (1144), 0 states have call successors, (0), 0 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 15:37:06,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:37:06,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:37:06,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:37:42,406 INFO L124 PetriNetUnfolderBase]: 5574/16009 cut-off events. [2023-12-09 15:37:42,406 INFO L125 PetriNetUnfolderBase]: For 203114/210775 co-relation queries the response was YES. [2023-12-09 15:37:42,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221064 conditions, 16009 events. 5574/16009 cut-off events. For 203114/210775 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 187343 event pairs, 8 based on Foata normal form. 275/15068 useless extension candidates. Maximal degree in co-relation 164678. Up to 12003 conditions per place. [2023-12-09 15:37:42,562 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 4956 selfloop transitions, 3308 changer transitions 3147/11448 dead transitions. [2023-12-09 15:37:42,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 11448 transitions, 395605 flow [2023-12-09 15:37:42,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-09 15:37:42,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-12-09 15:37:42,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2038 transitions. [2023-12-09 15:37:42,564 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.606547619047619 [2023-12-09 15:37:42,564 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2038 transitions. [2023-12-09 15:37:42,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2038 transitions. [2023-12-09 15:37:42,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:37:42,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2038 transitions. [2023-12-09 15:37:42,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 50.95) internal successors, (2038), 40 states have internal predecessors, (2038), 0 states have call successors, (0), 0 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 15:37:42,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 84.0) internal successors, (3444), 41 states have internal predecessors, (3444), 0 states have call successors, (0), 0 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 15:37:42,569 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 84.0) internal successors, (3444), 41 states have internal predecessors, (3444), 0 states have call successors, (0), 0 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 15:37:42,569 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 702 predicate places. [2023-12-09 15:37:42,569 INFO L500 AbstractCegarLoop]: Abstraction has has 776 places, 11448 transitions, 395605 flow [2023-12-09 15:37:42,569 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.73913043478261) internal successors, (1144), 23 states have internal predecessors, (1144), 0 states have call successors, (0), 0 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 15:37:42,570 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:37:42,570 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:37:42,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-09 15:37:42,774 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-09 15:37:42,774 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:37:42,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:37:42,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1033471574, now seen corresponding path program 14 times [2023-12-09 15:37:42,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:37:42,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614363429] [2023-12-09 15:37:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:37:42,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:37:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:37:42,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:42,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:37:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614363429] [2023-12-09 15:37:42,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614363429] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:37:42,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842842920] [2023-12-09 15:37:42,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:37:42,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:37:42,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:37:42,896 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:37:42,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-09 15:37:42,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:37:42,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:37:42,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:37:42,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:37:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:43,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:37:43,218 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:37:43,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842842920] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:37:43,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:37:43,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2023-12-09 15:37:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677456821] [2023-12-09 15:37:43,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:37:43,218 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-09 15:37:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:37:43,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-09 15:37:43,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-12-09 15:37:43,219 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:37:43,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 776 places, 11448 transitions, 395605 flow. Second operand has 21 states, 21 states have (on average 49.80952380952381) internal successors, (1046), 21 states have internal predecessors, (1046), 0 states have call successors, (0), 0 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 15:37:43,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:37:43,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:37:43,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:38:41,474 INFO L124 PetriNetUnfolderBase]: 5892/16706 cut-off events. [2023-12-09 15:38:41,475 INFO L125 PetriNetUnfolderBase]: For 224796/233154 co-relation queries the response was YES. [2023-12-09 15:38:41,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245481 conditions, 16706 events. 5892/16706 cut-off events. For 224796/233154 co-relation queries the response was YES. Maximal size of possible extension queue 1130. Compared 195398 event pairs, 6 based on Foata normal form. 244/15698 useless extension candidates. Maximal degree in co-relation 228031. Up to 12638 conditions per place. [2023-12-09 15:38:41,667 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 6688 selfloop transitions, 2161 changer transitions 3198/12084 dead transitions. [2023-12-09 15:38:41,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 12084 transitions, 441763 flow [2023-12-09 15:38:41,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-09 15:38:41,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-12-09 15:38:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1689 transitions. [2023-12-09 15:38:41,669 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6093073593073594 [2023-12-09 15:38:41,669 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1689 transitions. [2023-12-09 15:38:41,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1689 transitions. [2023-12-09 15:38:41,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:38:41,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1689 transitions. [2023-12-09 15:38:41,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 51.18181818181818) internal successors, (1689), 33 states have internal predecessors, (1689), 0 states have call successors, (0), 0 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 15:38:41,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 84.0) internal successors, (2856), 34 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 15:38:41,673 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 84.0) internal successors, (2856), 34 states have internal predecessors, (2856), 0 states have call successors, (0), 0 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 15:38:41,673 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 734 predicate places. [2023-12-09 15:38:41,673 INFO L500 AbstractCegarLoop]: Abstraction has has 808 places, 12084 transitions, 441763 flow [2023-12-09 15:38:41,674 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 49.80952380952381) internal successors, (1046), 21 states have internal predecessors, (1046), 0 states have call successors, (0), 0 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 15:38:41,674 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:38:41,675 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:38:41,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-09 15:38:41,879 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:41,879 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:38:41,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:38:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1759384088, now seen corresponding path program 15 times [2023-12-09 15:38:41,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:38:41,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543998136] [2023-12-09 15:38:41,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:38:41,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:38:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:38:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:41,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:38:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543998136] [2023-12-09 15:38:41,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543998136] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:38:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437358563] [2023-12-09 15:38:41,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:38:41,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:38:41,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:38:41,968 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:38:41,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-09 15:38:42,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:38:42,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:38:42,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:38:42,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:38:42,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:42,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:38:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:38:42,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437358563] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:38:42,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:38:42,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 23 [2023-12-09 15:38:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273492492] [2023-12-09 15:38:42,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:38:42,308 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 15:38:42,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:38:42,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 15:38:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-12-09 15:38:42,309 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:38:42,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 12084 transitions, 441763 flow. Second operand has 23 states, 23 states have (on average 49.69565217391305) internal successors, (1143), 23 states have internal predecessors, (1143), 0 states have call successors, (0), 0 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 15:38:42,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:38:42,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:38:42,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:39:58,733 INFO L124 PetriNetUnfolderBase]: 6969/20728 cut-off events. [2023-12-09 15:39:58,734 INFO L125 PetriNetUnfolderBase]: For 337120/349939 co-relation queries the response was YES. [2023-12-09 15:39:58,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313763 conditions, 20728 events. 6969/20728 cut-off events. For 337120/349939 co-relation queries the response was YES. Maximal size of possible extension queue 1420. Compared 256986 event pairs, 13 based on Foata normal form. 536/19705 useless extension candidates. Maximal degree in co-relation 286953. Up to 15193 conditions per place. [2023-12-09 15:39:58,964 INFO L140 encePairwiseOnDemand]: 65/84 looper letters, 4738 selfloop transitions, 5764 changer transitions 3947/14486 dead transitions. [2023-12-09 15:39:58,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 851 places, 14486 transitions, 560504 flow [2023-12-09 15:39:58,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-09 15:39:58,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-12-09 15:39:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2261 transitions. [2023-12-09 15:39:58,966 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6117424242424242 [2023-12-09 15:39:58,966 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2261 transitions. [2023-12-09 15:39:58,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2261 transitions. [2023-12-09 15:39:58,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:39:58,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2261 transitions. [2023-12-09 15:39:58,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 51.38636363636363) internal successors, (2261), 44 states have internal predecessors, (2261), 0 states have call successors, (0), 0 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 15:39:58,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 84.0) internal successors, (3780), 45 states have internal predecessors, (3780), 0 states have call successors, (0), 0 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 15:39:58,971 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 84.0) internal successors, (3780), 45 states have internal predecessors, (3780), 0 states have call successors, (0), 0 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 15:39:58,971 INFO L308 CegarLoopForPetriNet]: 74 programPoint places, 777 predicate places. [2023-12-09 15:39:58,971 INFO L500 AbstractCegarLoop]: Abstraction has has 851 places, 14486 transitions, 560504 flow [2023-12-09 15:39:58,971 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 49.69565217391305) internal successors, (1143), 23 states have internal predecessors, (1143), 0 states have call successors, (0), 0 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 15:39:58,971 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:39:58,971 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:39:58,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-09 15:39:59,179 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:59,180 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:39:59,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:39:59,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1501945944, now seen corresponding path program 16 times [2023-12-09 15:39:59,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:39:59,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317369074] [2023-12-09 15:39:59,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:39:59,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:39:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:39:59,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:39:59,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:39:59,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317369074] [2023-12-09 15:39:59,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317369074] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:39:59,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143608867] [2023-12-09 15:39:59,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:39:59,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:39:59,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:39:59,413 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:39:59,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-09 15:39:59,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:39:59,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:39:59,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:39:59,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:39:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:59,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:39:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:39:59,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143608867] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:39:59,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:39:59,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2023-12-09 15:39:59,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321740178] [2023-12-09 15:39:59,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:39:59,780 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-09 15:39:59,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:39:59,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-09 15:39:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2023-12-09 15:39:59,782 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 84 [2023-12-09 15:39:59,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 851 places, 14486 transitions, 560504 flow. Second operand has 25 states, 25 states have (on average 50.08) internal successors, (1252), 25 states have internal predecessors, (1252), 0 states have call successors, (0), 0 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 15:39:59,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:39:59,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 84 [2023-12-09 15:39:59,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:40:31,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-09 15:40:31,846 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:40:31,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-09 15:40:31,874 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:40:31,874 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 15:40:32,050 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:40:32,050 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (25states, 47/84 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 99378 conditions, 5628 events (1937/5627 cut-off events. For 80028/84295 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 69453 event pairs, 1 based on Foata normal form. 150/6542 useless extension candidates. Maximal degree in co-relation 96375. Up to 4671 conditions per place.). [2023-12-09 15:40:32,052 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:40:32,052 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:40:32,052 INFO L457 BasicCegarLoop]: Path program histogram: [16, 2, 1, 1] [2023-12-09 15:40:32,054 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:40:32,054 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:40:32,057 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:40:32 BasicIcfg [2023-12-09 15:40:32,057 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:40:32,057 INFO L158 Benchmark]: Toolchain (without parser) took 265728.61ms. Allocated memory was 252.7MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 203.9MB in the beginning and 596.4MB in the end (delta: -392.5MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-09 15:40:32,058 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory was 142.3MB in the beginning and 142.2MB in the end (delta: 136.5kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:40:32,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 150.94ms. Allocated memory is still 252.7MB. Free memory was 203.9MB in the beginning and 193.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:40:32,058 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.13ms. Allocated memory is still 252.7MB. Free memory was 193.0MB in the beginning and 191.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:40:32,058 INFO L158 Benchmark]: Boogie Preprocessor took 14.66ms. Allocated memory is still 252.7MB. Free memory was 191.3MB in the beginning and 190.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:40:32,058 INFO L158 Benchmark]: RCFGBuilder took 331.31ms. Allocated memory is still 252.7MB. Free memory was 190.1MB in the beginning and 177.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-12-09 15:40:32,058 INFO L158 Benchmark]: TraceAbstraction took 265205.58ms. Allocated memory was 252.7MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 176.9MB in the beginning and 596.4MB in the end (delta: -419.5MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. [2023-12-09 15:40:32,059 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 190.8MB. Free memory was 142.3MB in the beginning and 142.2MB in the end (delta: 136.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 150.94ms. Allocated memory is still 252.7MB. Free memory was 203.9MB in the beginning and 193.0MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.13ms. Allocated memory is still 252.7MB. Free memory was 193.0MB in the beginning and 191.3MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.66ms. Allocated memory is still 252.7MB. Free memory was 191.3MB in the beginning and 190.1MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 331.31ms. Allocated memory is still 252.7MB. Free memory was 190.1MB in the beginning and 177.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 265205.58ms. Allocated memory was 252.7MB in the beginning and 1.9GB in the end (delta: 1.6GB). Free memory was 176.9MB in the beginning and 596.4MB in the end (delta: -419.5MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (25states, 47/84 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 99378 conditions, 5628 events (1937/5627 cut-off events. For 80028/84295 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 69453 event pairs, 1 based on Foata normal form. 150/6542 useless extension candidates. Maximal degree in co-relation 96375. Up to 4671 conditions per place.). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (25states, 47/84 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 99378 conditions, 5628 events (1937/5627 cut-off events. For 80028/84295 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 69453 event pairs, 1 based on Foata normal form. 150/6542 useless extension candidates. Maximal degree in co-relation 96375. Up to 4671 conditions per place.). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (25states, 47/84 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 99378 conditions, 5628 events (1937/5627 cut-off events. For 80028/84295 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 69453 event pairs, 1 based on Foata normal form. 150/6542 useless extension candidates. Maximal degree in co-relation 96375. Up to 4671 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 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: 265.1s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 252.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2982 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2982 mSDsluCounter, 4619 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4049 mSDsCounter, 460 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12082 IncrementalHoareTripleChecker+Invalid, 12542 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 460 mSolverCounterUnsat, 570 mSDtfsCounter, 12082 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2995 GetRequests, 1965 SyntacticMatches, 16 SemanticMatches, 1014 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22883 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=560504occurred in iteration=19, InterpolantAutomatonStates: 797, 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, 0.5s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 2444 NumberOfCodeBlocks, 2444 NumberOfCodeBlocksAsserted, 54 NumberOfCheckSat, 3356 ConstructedInterpolants, 0 QuantifiedInterpolants, 11716 SizeOfPredicates, 140 NumberOfNonLiveVariables, 2628 ConjunctsInSsa, 232 ConjunctsInUnsatCore, 50 InterpolantComputations, 7 PerfectInterpolantSequences, 116/198 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