/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:23:23,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:23:23,911 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 15:23:23,934 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:23:23,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:23:23,935 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:23:23,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:23:23,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:23:23,936 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:23:23,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:23:23,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:23:23,937 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:23:23,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:23:23,937 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:23:23,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:23:23,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:23:23,938 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:23:23,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:23:23,938 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:23:23,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:23:23,939 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:23:23,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:23:23,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:23:23,939 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:23:23,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:23:23,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:23:23,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:23:23,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:23:23,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:23:23,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:23:23,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:23:23,941 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:23:23,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:23:23,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:23:24,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:23:24,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:23:24,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:23:24,131 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:23:24,132 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:23:24,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2023-12-09 15:23:25,288 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:23:25,474 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:23:25,474 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2023-12-09 15:23:25,481 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d69c4082/a94d418fcdab40059f38180202091b1f/FLAG927803c15 [2023-12-09 15:23:25,496 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d69c4082/a94d418fcdab40059f38180202091b1f [2023-12-09 15:23:25,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:23:25,499 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:23:25,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:23:25,501 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:23:25,504 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:23:25,504 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,505 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e96ff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25, skipping insertion in model container [2023-12-09 15:23:25,505 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,530 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:23:25,660 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c[2147,2160] [2023-12-09 15:23:25,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:23:25,670 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:23:25,684 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c[2147,2160] [2023-12-09 15:23:25,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:23:25,691 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:23:25,691 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:23:25,696 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:23:25,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25 WrapperNode [2023-12-09 15:23:25,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:23:25,698 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:23:25,698 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:23:25,698 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:23:25,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,724 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2023-12-09 15:23:25,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:23:25,725 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:23:25,725 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:23:25,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:23:25,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,733 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,734 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,738 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:23:25,743 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:23:25,743 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:23:25,744 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:23:25,744 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (1/1) ... [2023-12-09 15:23:25,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:23:25,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:25,768 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 15:23:25,782 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 15:23:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:23:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:23:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:23:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:23:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:23:25,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:23:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:23:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:23:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:23:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:23:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:23:25,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:23:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:23:25,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:23:25,799 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 15:23:25,870 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:23:25,872 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:23:26,022 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:23:26,076 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:23:26,076 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 15:23:26,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:23:26 BoogieIcfgContainer [2023-12-09 15:23:26,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:23:26,079 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:23:26,079 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:23:26,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:23:26,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:23:25" (1/3) ... [2023-12-09 15:23:26,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3eb993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:23:26, skipping insertion in model container [2023-12-09 15:23:26,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:23:25" (2/3) ... [2023-12-09 15:23:26,082 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3eb993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:23:26, skipping insertion in model container [2023-12-09 15:23:26,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:23:26" (3/3) ... [2023-12-09 15:23:26,083 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2023-12-09 15:23:26,095 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:23:26,095 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:23:26,095 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:23:26,146 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:23:26,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 89 transitions, 192 flow [2023-12-09 15:23:26,240 INFO L124 PetriNetUnfolderBase]: 6/87 cut-off events. [2023-12-09 15:23:26,240 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:23:26,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 6/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-12-09 15:23:26,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 89 transitions, 192 flow [2023-12-09 15:23:26,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 78 transitions, 168 flow [2023-12-09 15:23:26,253 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:23:26,267 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;@26647a8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:23:26,268 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:23:26,295 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:23:26,295 INFO L124 PetriNetUnfolderBase]: 6/77 cut-off events. [2023-12-09 15:23:26,295 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:23:26,295 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:26,296 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] [2023-12-09 15:23:26,296 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 15:23:26,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:26,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1934211639, now seen corresponding path program 1 times [2023-12-09 15:23:26,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:26,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332561671] [2023-12-09 15:23:26,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:26,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:26,844 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 15:23:26,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:26,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332561671] [2023-12-09 15:23:26,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332561671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:26,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:26,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:26,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625980495] [2023-12-09 15:23:26,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:26,853 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:26,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:26,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:26,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:26,887 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:23:26,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 78 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:26,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:26,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:23:26,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:27,026 INFO L124 PetriNetUnfolderBase]: 8/115 cut-off events. [2023-12-09 15:23:27,026 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-12-09 15:23:27,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 115 events. 8/115 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 201 event pairs, 1 based on Foata normal form. 15/123 useless extension candidates. Maximal degree in co-relation 65. Up to 20 conditions per place. [2023-12-09 15:23:27,028 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 19 selfloop transitions, 2 changer transitions 8/82 dead transitions. [2023-12-09 15:23:27,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 243 flow [2023-12-09 15:23:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:23:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:23:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 479 transitions. [2023-12-09 15:23:27,046 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7688603531300161 [2023-12-09 15:23:27,047 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 479 transitions. [2023-12-09 15:23:27,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 479 transitions. [2023-12-09 15:23:27,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:27,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 479 transitions. [2023-12-09 15:23:27,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 68.42857142857143) internal successors, (479), 7 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,064 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,067 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 6 predicate places. [2023-12-09 15:23:27,068 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 243 flow [2023-12-09 15:23:27,068 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.4) internal successors, (332), 5 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,068 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:27,068 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 15:23:27,068 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:23:27,069 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 15:23:27,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:27,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1938163297, now seen corresponding path program 1 times [2023-12-09 15:23:27,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:27,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136674815] [2023-12-09 15:23:27,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:27,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:27,263 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 15:23:27,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:27,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136674815] [2023-12-09 15:23:27,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136674815] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:27,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727166920] [2023-12-09 15:23:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:27,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:27,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:27,268 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 15:23:27,317 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 15:23:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:27,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-09 15:23:27,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:27,479 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 15:23:27,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:27,559 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 15:23:27,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727166920] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:27,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-09 15:23:27,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 7 [2023-12-09 15:23:27,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059626847] [2023-12-09 15:23:27,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:27,561 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:23:27,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:27,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:23:27,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:23:27,564 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 89 [2023-12-09 15:23:27,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 243 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:27,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 89 [2023-12-09 15:23:27,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:27,660 INFO L124 PetriNetUnfolderBase]: 51/237 cut-off events. [2023-12-09 15:23:27,660 INFO L125 PetriNetUnfolderBase]: For 114/116 co-relation queries the response was YES. [2023-12-09 15:23:27,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 237 events. 51/237 cut-off events. For 114/116 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 991 event pairs, 12 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 254. Up to 40 conditions per place. [2023-12-09 15:23:27,662 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 21 selfloop transitions, 5 changer transitions 10/94 dead transitions. [2023-12-09 15:23:27,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 94 transitions, 342 flow [2023-12-09 15:23:27,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 15:23:27,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 15:23:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2023-12-09 15:23:27,664 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8567415730337079 [2023-12-09 15:23:27,664 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 305 transitions. [2023-12-09 15:23:27,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 305 transitions. [2023-12-09 15:23:27,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:27,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 305 transitions. [2023-12-09 15:23:27,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,666 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,667 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 9 predicate places. [2023-12-09 15:23:27,667 INFO L500 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 342 flow [2023-12-09 15:23:27,668 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,668 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:27,668 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 15:23:27,678 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 15:23:27,872 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 15:23:27,873 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 15:23:27,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1798628881, now seen corresponding path program 2 times [2023-12-09 15:23:27,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:27,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769056277] [2023-12-09 15:23:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:27,958 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 15:23:27,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:27,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769056277] [2023-12-09 15:23:27,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769056277] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:27,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:27,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710995268] [2023-12-09 15:23:27,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:27,959 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:27,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:27,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:27,960 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 89 [2023-12-09 15:23:27,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 342 flow. Second operand has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:27,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:27,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 89 [2023-12-09 15:23:27,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:28,050 INFO L124 PetriNetUnfolderBase]: 119/370 cut-off events. [2023-12-09 15:23:28,050 INFO L125 PetriNetUnfolderBase]: For 232/251 co-relation queries the response was YES. [2023-12-09 15:23:28,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 370 events. 119/370 cut-off events. For 232/251 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1732 event pairs, 16 based on Foata normal form. 4/336 useless extension candidates. Maximal degree in co-relation 703. Up to 164 conditions per place. [2023-12-09 15:23:28,054 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 52 selfloop transitions, 10 changer transitions 24/140 dead transitions. [2023-12-09 15:23:28,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 140 transitions, 685 flow [2023-12-09 15:23:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:23:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:23:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 448 transitions. [2023-12-09 15:23:28,055 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8389513108614233 [2023-12-09 15:23:28,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 448 transitions. [2023-12-09 15:23:28,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 448 transitions. [2023-12-09 15:23:28,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:28,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 448 transitions. [2023-12-09 15:23:28,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 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 15:23:28,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,058 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,058 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 14 predicate places. [2023-12-09 15:23:28,058 INFO L500 AbstractCegarLoop]: Abstraction has has 93 places, 140 transitions, 685 flow [2023-12-09 15:23:28,059 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,059 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:28,059 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 15:23:28,059 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:23:28,059 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 15:23:28,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:28,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1692637583, now seen corresponding path program 3 times [2023-12-09 15:23:28,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:28,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659392077] [2023-12-09 15:23:28,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:28,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:28,179 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 15:23:28,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:28,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659392077] [2023-12-09 15:23:28,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659392077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:28,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:28,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:23:28,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946616777] [2023-12-09 15:23:28,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:28,181 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:23:28,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:28,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:23:28,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:23:28,182 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 89 [2023-12-09 15:23:28,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 140 transitions, 685 flow. Second operand has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:28,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 89 [2023-12-09 15:23:28,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:28,318 INFO L124 PetriNetUnfolderBase]: 164/496 cut-off events. [2023-12-09 15:23:28,319 INFO L125 PetriNetUnfolderBase]: For 457/557 co-relation queries the response was YES. [2023-12-09 15:23:28,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 496 events. 164/496 cut-off events. For 457/557 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2457 event pairs, 16 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 1242. Up to 237 conditions per place. [2023-12-09 15:23:28,324 INFO L140 encePairwiseOnDemand]: 80/89 looper letters, 83 selfloop transitions, 15 changer transitions 46/198 dead transitions. [2023-12-09 15:23:28,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 198 transitions, 1305 flow [2023-12-09 15:23:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:23:28,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:23:28,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 509 transitions. [2023-12-09 15:23:28,326 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8170144462279294 [2023-12-09 15:23:28,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 509 transitions. [2023-12-09 15:23:28,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 509 transitions. [2023-12-09 15:23:28,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:28,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 509 transitions. [2023-12-09 15:23:28,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 89.0) internal successors, (712), 8 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,331 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 20 predicate places. [2023-12-09 15:23:28,332 INFO L500 AbstractCegarLoop]: Abstraction has has 99 places, 198 transitions, 1305 flow [2023-12-09 15:23:28,332 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,332 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:28,333 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 15:23:28,333 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:23:28,333 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 15:23:28,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash -84930419, now seen corresponding path program 4 times [2023-12-09 15:23:28,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:28,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726853035] [2023-12-09 15:23:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:28,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:28,470 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 15:23:28,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:28,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726853035] [2023-12-09 15:23:28,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726853035] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:28,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:28,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:23:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026272897] [2023-12-09 15:23:28,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:28,472 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:23:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:23:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:23:28,474 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 89 [2023-12-09 15:23:28,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 198 transitions, 1305 flow. Second operand has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:28,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 89 [2023-12-09 15:23:28,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:28,627 INFO L124 PetriNetUnfolderBase]: 184/553 cut-off events. [2023-12-09 15:23:28,627 INFO L125 PetriNetUnfolderBase]: For 830/1099 co-relation queries the response was YES. [2023-12-09 15:23:28,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2130 conditions, 553 events. 184/553 cut-off events. For 830/1099 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2867 event pairs, 17 based on Foata normal form. 9/512 useless extension candidates. Maximal degree in co-relation 1841. Up to 283 conditions per place. [2023-12-09 15:23:28,631 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 92 selfloop transitions, 15 changer transitions 45/206 dead transitions. [2023-12-09 15:23:28,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 206 transitions, 1671 flow [2023-12-09 15:23:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:23:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:23:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 450 transitions. [2023-12-09 15:23:28,632 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8426966292134831 [2023-12-09 15:23:28,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 450 transitions. [2023-12-09 15:23:28,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 450 transitions. [2023-12-09 15:23:28,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:28,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 450 transitions. [2023-12-09 15:23:28,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 75.0) internal successors, (450), 6 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,636 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,640 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 25 predicate places. [2023-12-09 15:23:28,640 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 206 transitions, 1671 flow [2023-12-09 15:23:28,641 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,641 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:28,641 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 15:23:28,641 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:23:28,641 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 15:23:28,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:28,641 INFO L85 PathProgramCache]: Analyzing trace with hash 632966927, now seen corresponding path program 5 times [2023-12-09 15:23:28,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:28,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988852963] [2023-12-09 15:23:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:28,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:28,718 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 15:23:28,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:28,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988852963] [2023-12-09 15:23:28,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988852963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:23:28,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:23:28,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:23:28,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801283542] [2023-12-09 15:23:28,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:23:28,719 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:23:28,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:28,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:23:28,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:23:28,720 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 89 [2023-12-09 15:23:28,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 206 transitions, 1671 flow. Second operand has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:28,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 89 [2023-12-09 15:23:28,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:28,817 INFO L124 PetriNetUnfolderBase]: 175/513 cut-off events. [2023-12-09 15:23:28,817 INFO L125 PetriNetUnfolderBase]: For 1104/1355 co-relation queries the response was YES. [2023-12-09 15:23:28,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2363 conditions, 513 events. 175/513 cut-off events. For 1104/1355 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2582 event pairs, 17 based on Foata normal form. 1/473 useless extension candidates. Maximal degree in co-relation 1928. Up to 269 conditions per place. [2023-12-09 15:23:28,822 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 77 selfloop transitions, 19 changer transitions 44/194 dead transitions. [2023-12-09 15:23:28,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 194 transitions, 1821 flow [2023-12-09 15:23:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:23:28,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:23:28,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 446 transitions. [2023-12-09 15:23:28,823 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8352059925093633 [2023-12-09 15:23:28,823 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 446 transitions. [2023-12-09 15:23:28,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 446 transitions. [2023-12-09 15:23:28,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:28,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 446 transitions. [2023-12-09 15:23:28,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.33333333333333) internal successors, (446), 6 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,826 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 89.0) internal successors, (623), 7 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,826 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 30 predicate places. [2023-12-09 15:23:28,826 INFO L500 AbstractCegarLoop]: Abstraction has has 109 places, 194 transitions, 1821 flow [2023-12-09 15:23:28,826 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.5) internal successors, (405), 6 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:28,827 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:28,827 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:28,827 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:23:28,827 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 15:23:28,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:28,827 INFO L85 PathProgramCache]: Analyzing trace with hash -946002023, now seen corresponding path program 1 times [2023-12-09 15:23:28,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:28,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567248112] [2023-12-09 15:23:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:28,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:28,988 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 15:23:28,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:28,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567248112] [2023-12-09 15:23:28,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567248112] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134144492] [2023-12-09 15:23:28,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:28,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:28,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:29,006 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 15:23:29,032 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 15:23:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:29,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-09 15:23:29,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:29,141 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 15:23:29,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:29,264 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 15:23:29,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134144492] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:29,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:29,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 8 [2023-12-09 15:23:29,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306928811] [2023-12-09 15:23:29,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:29,265 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:23:29,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:29,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:23:29,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:23:29,266 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 89 [2023-12-09 15:23:29,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 194 transitions, 1821 flow. Second operand has 8 states, 8 states have (on average 65.75) internal successors, (526), 8 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:29,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:29,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 89 [2023-12-09 15:23:29,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:29,422 INFO L124 PetriNetUnfolderBase]: 319/928 cut-off events. [2023-12-09 15:23:29,422 INFO L125 PetriNetUnfolderBase]: For 2706/3053 co-relation queries the response was YES. [2023-12-09 15:23:29,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4471 conditions, 928 events. 319/928 cut-off events. For 2706/3053 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5633 event pairs, 72 based on Foata normal form. 17/862 useless extension candidates. Maximal degree in co-relation 4018. Up to 568 conditions per place. [2023-12-09 15:23:29,429 INFO L140 encePairwiseOnDemand]: 79/89 looper letters, 42 selfloop transitions, 11 changer transitions 57/221 dead transitions. [2023-12-09 15:23:29,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 221 transitions, 2273 flow [2023-12-09 15:23:29,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:23:29,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:23:29,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 655 transitions. [2023-12-09 15:23:29,431 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7359550561797753 [2023-12-09 15:23:29,431 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 655 transitions. [2023-12-09 15:23:29,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 655 transitions. [2023-12-09 15:23:29,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:29,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 655 transitions. [2023-12-09 15:23:29,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 65.5) internal successors, (655), 10 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:29,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:29,434 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 89.0) internal successors, (979), 11 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:29,434 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 39 predicate places. [2023-12-09 15:23:29,435 INFO L500 AbstractCegarLoop]: Abstraction has has 118 places, 221 transitions, 2273 flow [2023-12-09 15:23:29,435 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 65.75) internal successors, (526), 8 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:29,435 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:29,435 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:29,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-09 15:23:29,640 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-09 15:23:29,640 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 15:23:29,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:29,641 INFO L85 PathProgramCache]: Analyzing trace with hash -546454773, now seen corresponding path program 2 times [2023-12-09 15:23:29,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:29,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278534169] [2023-12-09 15:23:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:29,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:29,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:29,829 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:29,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:29,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278534169] [2023-12-09 15:23:29,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278534169] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:29,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202394141] [2023-12-09 15:23:29,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:23:29,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:29,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:29,830 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 15:23:29,856 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 15:23:29,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:23:29,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:29,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:23:29,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:30,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202394141] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:30,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:30,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-12-09 15:23:30,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014629626] [2023-12-09 15:23:30,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:30,119 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-09 15:23:30,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:30,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-09 15:23:30,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-09 15:23:30,121 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:23:30,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 221 transitions, 2273 flow. Second operand has 16 states, 16 states have (on average 65.625) internal successors, (1050), 16 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:30,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:30,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:23:30,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:31,434 INFO L124 PetriNetUnfolderBase]: 611/1562 cut-off events. [2023-12-09 15:23:31,434 INFO L125 PetriNetUnfolderBase]: For 5543/5943 co-relation queries the response was YES. [2023-12-09 15:23:31,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8747 conditions, 1562 events. 611/1562 cut-off events. For 5543/5943 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 10053 event pairs, 4 based on Foata normal form. 20/1460 useless extension candidates. Maximal degree in co-relation 8174. Up to 1032 conditions per place. [2023-12-09 15:23:31,448 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 207 selfloop transitions, 211 changer transitions 99/577 dead transitions. [2023-12-09 15:23:31,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 577 transitions, 7603 flow [2023-12-09 15:23:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-12-09 15:23:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-12-09 15:23:31,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 3596 transitions. [2023-12-09 15:23:31,455 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7623489506041976 [2023-12-09 15:23:31,455 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 3596 transitions. [2023-12-09 15:23:31,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 3596 transitions. [2023-12-09 15:23:31,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:31,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 3596 transitions. [2023-12-09 15:23:31,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 67.84905660377359) internal successors, (3596), 53 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:31,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 89.0) internal successors, (4806), 54 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:31,469 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 89.0) internal successors, (4806), 54 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:31,471 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 91 predicate places. [2023-12-09 15:23:31,471 INFO L500 AbstractCegarLoop]: Abstraction has has 170 places, 577 transitions, 7603 flow [2023-12-09 15:23:31,472 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 65.625) internal successors, (1050), 16 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:31,472 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:31,472 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:31,478 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 15:23:31,677 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:31,678 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 15:23:31,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:31,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1474206581, now seen corresponding path program 3 times [2023-12-09 15:23:31,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:31,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143763787] [2023-12-09 15:23:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:31,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:31,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:31,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143763787] [2023-12-09 15:23:31,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143763787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:31,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379231493] [2023-12-09 15:23:31,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:23:31,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:31,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:31,843 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 15:23:31,870 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 15:23:31,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:23:31,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:31,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:23:31,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:31,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:32,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379231493] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:32,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:32,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-12-09 15:23:32,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627740698] [2023-12-09 15:23:32,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:32,113 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-09 15:23:32,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:32,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-09 15:23:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-12-09 15:23:32,114 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:23:32,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 577 transitions, 7603 flow. Second operand has 17 states, 17 states have (on average 65.52941176470588) internal successors, (1114), 17 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:32,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:32,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:23:32,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:33,030 INFO L124 PetriNetUnfolderBase]: 701/1790 cut-off events. [2023-12-09 15:23:33,030 INFO L125 PetriNetUnfolderBase]: For 7250/7634 co-relation queries the response was YES. [2023-12-09 15:23:33,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11462 conditions, 1790 events. 701/1790 cut-off events. For 7250/7634 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12034 event pairs, 4 based on Foata normal form. 23/1680 useless extension candidates. Maximal degree in co-relation 10841. Up to 1189 conditions per place. [2023-12-09 15:23:33,048 INFO L140 encePairwiseOnDemand]: 73/89 looper letters, 394 selfloop transitions, 154 changer transitions 153/761 dead transitions. [2023-12-09 15:23:33,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 761 transitions, 11538 flow [2023-12-09 15:23:33,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-09 15:23:33,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-12-09 15:23:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2035 transitions. [2023-12-09 15:23:33,053 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7621722846441947 [2023-12-09 15:23:33,053 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2035 transitions. [2023-12-09 15:23:33,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2035 transitions. [2023-12-09 15:23:33,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:33,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2035 transitions. [2023-12-09 15:23:33,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 67.83333333333333) internal successors, (2035), 30 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:33,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 89.0) internal successors, (2759), 31 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:33,067 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 89.0) internal successors, (2759), 31 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:33,068 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 120 predicate places. [2023-12-09 15:23:33,068 INFO L500 AbstractCegarLoop]: Abstraction has has 199 places, 761 transitions, 11538 flow [2023-12-09 15:23:33,069 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 65.52941176470588) internal successors, (1114), 17 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:33,069 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:33,069 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:33,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-09 15:23:33,273 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:33,274 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 15:23:33,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:33,274 INFO L85 PathProgramCache]: Analyzing trace with hash 864130283, now seen corresponding path program 4 times [2023-12-09 15:23:33,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:33,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761892437] [2023-12-09 15:23:33,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:33,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:33,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:33,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761892437] [2023-12-09 15:23:33,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761892437] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:33,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933466821] [2023-12-09 15:23:33,482 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:23:33,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:33,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:33,483 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 15:23:33,486 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 15:23:33,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:23:33,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:33,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:23:33,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:33,625 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:33,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:33,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933466821] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:33,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:33,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-09 15:23:33,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273747692] [2023-12-09 15:23:33,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:33,751 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:23:33,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:33,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:23:33,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:23:33,752 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:23:33,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 761 transitions, 11538 flow. Second operand has 19 states, 19 states have (on average 65.47368421052632) internal successors, (1244), 19 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:33,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:33,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:23:33,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:35,784 INFO L124 PetriNetUnfolderBase]: 943/2291 cut-off events. [2023-12-09 15:23:35,785 INFO L125 PetriNetUnfolderBase]: For 9587/10088 co-relation queries the response was YES. [2023-12-09 15:23:35,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16890 conditions, 2291 events. 943/2291 cut-off events. For 9587/10088 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 16092 event pairs, 14 based on Foata normal form. 40/2145 useless extension candidates. Maximal degree in co-relation 14561. Up to 1604 conditions per place. [2023-12-09 15:23:35,807 INFO L140 encePairwiseOnDemand]: 73/89 looper letters, 376 selfloop transitions, 410 changer transitions 204/1050 dead transitions. [2023-12-09 15:23:35,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1050 transitions, 17786 flow [2023-12-09 15:23:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-09 15:23:35,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-12-09 15:23:35,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 5551 transitions. [2023-12-09 15:23:35,815 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7606193477665114 [2023-12-09 15:23:35,815 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 5551 transitions. [2023-12-09 15:23:35,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 5551 transitions. [2023-12-09 15:23:35,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:35,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 5551 transitions. [2023-12-09 15:23:35,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 67.6951219512195) internal successors, (5551), 82 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:35,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 89.0) internal successors, (7387), 83 states have internal predecessors, (7387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:35,833 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 89.0) internal successors, (7387), 83 states have internal predecessors, (7387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:35,834 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 201 predicate places. [2023-12-09 15:23:35,834 INFO L500 AbstractCegarLoop]: Abstraction has has 280 places, 1050 transitions, 17786 flow [2023-12-09 15:23:35,834 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 65.47368421052632) internal successors, (1244), 19 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:35,834 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:35,834 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:35,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-09 15:23:36,039 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-09 15:23:36,040 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 15:23:36,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:36,040 INFO L85 PathProgramCache]: Analyzing trace with hash 319537027, now seen corresponding path program 5 times [2023-12-09 15:23:36,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:36,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216912880] [2023-12-09 15:23:36,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:36,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:36,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:36,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216912880] [2023-12-09 15:23:36,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216912880] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:36,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766187350] [2023-12-09 15:23:36,210 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:23:36,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:36,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:36,226 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 15:23:36,252 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 15:23:36,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:23:36,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:36,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:23:36,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:36,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:36,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:36,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766187350] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:36,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:36,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-09 15:23:36,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038926638] [2023-12-09 15:23:36,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:36,509 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:23:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:23:36,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:23:36,510 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:23:36,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 1050 transitions, 17786 flow. Second operand has 18 states, 18 states have (on average 65.77777777777777) internal successors, (1184), 18 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:36,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:36,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:23:36,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:38,511 INFO L124 PetriNetUnfolderBase]: 1318/3140 cut-off events. [2023-12-09 15:23:38,511 INFO L125 PetriNetUnfolderBase]: For 15441/15986 co-relation queries the response was YES. [2023-12-09 15:23:38,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25934 conditions, 3140 events. 1318/3140 cut-off events. For 15441/15986 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 23458 event pairs, 16 based on Foata normal form. 29/2936 useless extension candidates. Maximal degree in co-relation 22510. Up to 2251 conditions per place. [2023-12-09 15:23:38,550 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 513 selfloop transitions, 674 changer transitions 237/1484 dead transitions. [2023-12-09 15:23:38,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1484 transitions, 28133 flow [2023-12-09 15:23:38,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-12-09 15:23:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-12-09 15:23:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 4599 transitions. [2023-12-09 15:23:38,562 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7599140779907468 [2023-12-09 15:23:38,562 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 4599 transitions. [2023-12-09 15:23:38,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 4599 transitions. [2023-12-09 15:23:38,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:38,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 4599 transitions. [2023-12-09 15:23:38,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 67.63235294117646) internal successors, (4599), 68 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:38,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 89.0) internal successors, (6141), 69 states have internal predecessors, (6141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:38,673 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 89.0) internal successors, (6141), 69 states have internal predecessors, (6141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:38,673 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 268 predicate places. [2023-12-09 15:23:38,673 INFO L500 AbstractCegarLoop]: Abstraction has has 347 places, 1484 transitions, 28133 flow [2023-12-09 15:23:38,673 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.77777777777777) internal successors, (1184), 18 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:38,673 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:38,674 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:38,708 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 15:23:38,880 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:38,881 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 15:23:38,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:38,881 INFO L85 PathProgramCache]: Analyzing trace with hash 887134169, now seen corresponding path program 6 times [2023-12-09 15:23:38,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:38,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025580061] [2023-12-09 15:23:38,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:38,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:38,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:39,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:39,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025580061] [2023-12-09 15:23:39,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025580061] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:39,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096766093] [2023-12-09 15:23:39,050 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:23:39,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:39,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:39,074 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 15:23:39,101 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 15:23:39,158 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:23:39,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:39,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:23:39,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:39,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:39,357 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:39,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096766093] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:39,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:39,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-09 15:23:39,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959604790] [2023-12-09 15:23:39,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:39,360 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:23:39,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:39,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:23:39,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:23:39,362 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:23:39,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 1484 transitions, 28133 flow. Second operand has 19 states, 19 states have (on average 65.63157894736842) internal successors, (1247), 19 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:39,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:39,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:23:39,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:42,203 INFO L124 PetriNetUnfolderBase]: 1824/4314 cut-off events. [2023-12-09 15:23:42,204 INFO L125 PetriNetUnfolderBase]: For 24040/24701 co-relation queries the response was YES. [2023-12-09 15:23:42,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38801 conditions, 4314 events. 1824/4314 cut-off events. For 24040/24701 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 33752 event pairs, 24 based on Foata normal form. 28/4044 useless extension candidates. Maximal degree in co-relation 34118. Up to 3064 conditions per place. [2023-12-09 15:23:42,248 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 647 selfloop transitions, 1154 changer transitions 259/2120 dead transitions. [2023-12-09 15:23:42,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 2120 transitions, 43900 flow [2023-12-09 15:23:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-09 15:23:42,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2023-12-09 15:23:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 5823 transitions. [2023-12-09 15:23:42,255 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7520340953118946 [2023-12-09 15:23:42,255 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 5823 transitions. [2023-12-09 15:23:42,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 5823 transitions. [2023-12-09 15:23:42,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:42,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 5823 transitions. [2023-12-09 15:23:42,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 66.93103448275862) internal successors, (5823), 87 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:42,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 89.0) internal successors, (7832), 88 states have internal predecessors, (7832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:42,271 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 89.0) internal successors, (7832), 88 states have internal predecessors, (7832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:42,271 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 354 predicate places. [2023-12-09 15:23:42,271 INFO L500 AbstractCegarLoop]: Abstraction has has 433 places, 2120 transitions, 43900 flow [2023-12-09 15:23:42,272 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 65.63157894736842) internal successors, (1247), 19 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:42,272 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:42,272 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:42,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-09 15:23:42,476 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:42,476 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 15:23:42,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -333286407, now seen corresponding path program 7 times [2023-12-09 15:23:42,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:42,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685143537] [2023-12-09 15:23:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:42,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:42,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:42,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:42,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685143537] [2023-12-09 15:23:42,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685143537] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:42,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139109384] [2023-12-09 15:23:42,624 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:23:42,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:42,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:42,642 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 15:23:42,657 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 15:23:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:42,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:23:42,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:42,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:42,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139109384] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:42,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:42,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-12-09 15:23:42,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768968398] [2023-12-09 15:23:42,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:42,874 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:23:42,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:42,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:23:42,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:23:42,875 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:23:42,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 2120 transitions, 43900 flow. Second operand has 20 states, 20 states have (on average 65.4) internal successors, (1308), 20 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:42,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:42,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:23:42,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:47,653 INFO L124 PetriNetUnfolderBase]: 2625/6331 cut-off events. [2023-12-09 15:23:47,653 INFO L125 PetriNetUnfolderBase]: For 45729/46695 co-relation queries the response was YES. [2023-12-09 15:23:47,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61344 conditions, 6331 events. 2625/6331 cut-off events. For 45729/46695 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 54545 event pairs, 28 based on Foata normal form. 33/5961 useless extension candidates. Maximal degree in co-relation 54119. Up to 4446 conditions per place. [2023-12-09 15:23:47,724 INFO L140 encePairwiseOnDemand]: 75/89 looper letters, 940 selfloop transitions, 1703 changer transitions 334/3037 dead transitions. [2023-12-09 15:23:47,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 3037 transitions, 69425 flow [2023-12-09 15:23:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-12-09 15:23:47,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2023-12-09 15:23:47,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 7875 transitions. [2023-12-09 15:23:47,731 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.756266205704408 [2023-12-09 15:23:47,731 INFO L72 ComplementDD]: Start complementDD. Operand 117 states and 7875 transitions. [2023-12-09 15:23:47,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 7875 transitions. [2023-12-09 15:23:47,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:47,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 117 states and 7875 transitions. [2023-12-09 15:23:47,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 118 states, 117 states have (on average 67.3076923076923) internal successors, (7875), 117 states have internal predecessors, (7875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:47,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 118 states, 118 states have (on average 89.0) internal successors, (10502), 118 states have internal predecessors, (10502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:47,758 INFO L81 ComplementDD]: Finished complementDD. Result has 118 states, 118 states have (on average 89.0) internal successors, (10502), 118 states have internal predecessors, (10502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:47,759 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 470 predicate places. [2023-12-09 15:23:47,759 INFO L500 AbstractCegarLoop]: Abstraction has has 549 places, 3037 transitions, 69425 flow [2023-12-09 15:23:47,759 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 65.4) internal successors, (1308), 20 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:47,760 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:47,760 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:47,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:23:47,964 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-09 15:23:47,965 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 15:23:47,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:47,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1975512987, now seen corresponding path program 8 times [2023-12-09 15:23:47,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:47,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41968609] [2023-12-09 15:23:47,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:47,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:48,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:48,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41968609] [2023-12-09 15:23:48,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41968609] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:48,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131927960] [2023-12-09 15:23:48,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:23:48,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:48,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:48,126 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 15:23:48,128 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 15:23:48,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:23:48,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:48,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:23:48,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:48,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:48,238 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:48,351 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:48,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131927960] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:48,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:48,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-09 15:23:48,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733150109] [2023-12-09 15:23:48,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:48,352 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:23:48,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:48,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:23:48,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:23:48,353 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:23:48,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 3037 transitions, 69425 flow. Second operand has 18 states, 18 states have (on average 65.44444444444444) internal successors, (1178), 18 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:48,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:48,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:23:48,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:23:54,650 INFO L124 PetriNetUnfolderBase]: 3839/8740 cut-off events. [2023-12-09 15:23:54,650 INFO L125 PetriNetUnfolderBase]: For 63021/64120 co-relation queries the response was YES. [2023-12-09 15:23:54,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93713 conditions, 8740 events. 3839/8740 cut-off events. For 63021/64120 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 77004 event pairs, 40 based on Foata normal form. 41/8175 useless extension candidates. Maximal degree in co-relation 84986. Up to 6255 conditions per place. [2023-12-09 15:23:54,850 INFO L140 encePairwiseOnDemand]: 73/89 looper letters, 1931 selfloop transitions, 1835 changer transitions 359/4185 dead transitions. [2023-12-09 15:23:54,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 4185 transitions, 103476 flow [2023-12-09 15:23:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-12-09 15:23:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2023-12-09 15:23:54,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 4793 transitions. [2023-12-09 15:23:54,854 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7693418940609952 [2023-12-09 15:23:54,854 INFO L72 ComplementDD]: Start complementDD. Operand 70 states and 4793 transitions. [2023-12-09 15:23:54,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 70 states and 4793 transitions. [2023-12-09 15:23:54,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:23:54,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 70 states and 4793 transitions. [2023-12-09 15:23:54,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 71 states, 70 states have (on average 68.47142857142858) internal successors, (4793), 70 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:54,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 71 states, 71 states have (on average 89.0) internal successors, (6319), 71 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:54,865 INFO L81 ComplementDD]: Finished complementDD. Result has 71 states, 71 states have (on average 89.0) internal successors, (6319), 71 states have internal predecessors, (6319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:54,866 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 539 predicate places. [2023-12-09 15:23:54,866 INFO L500 AbstractCegarLoop]: Abstraction has has 618 places, 4185 transitions, 103476 flow [2023-12-09 15:23:54,866 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.44444444444444) internal successors, (1178), 18 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:54,866 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:23:54,866 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:23:54,871 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 15:23:55,070 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-09 15:23:55,071 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 15:23:55,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:23:55,071 INFO L85 PathProgramCache]: Analyzing trace with hash 993705455, now seen corresponding path program 9 times [2023-12-09 15:23:55,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:23:55,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368524379] [2023-12-09 15:23:55,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:23:55,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:23:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:23:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:55,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:23:55,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368524379] [2023-12-09 15:23:55,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368524379] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:23:55,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93431442] [2023-12-09 15:23:55,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:23:55,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:23:55,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:23:55,226 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 15:23:55,248 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 15:23:55,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-09 15:23:55,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:23:55,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:23:55,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:23:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:55,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:23:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:23:55,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93431442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:23:55,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:23:55,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-12-09 15:23:55,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809645442] [2023-12-09 15:23:55,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:23:55,468 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-09 15:23:55,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:23:55,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-09 15:23:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-12-09 15:23:55,469 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:23:55,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 4185 transitions, 103476 flow. Second operand has 17 states, 17 states have (on average 65.58823529411765) internal successors, (1115), 17 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:23:55,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:23:55,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:23:55,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:03,034 INFO L124 PetriNetUnfolderBase]: 3965/9044 cut-off events. [2023-12-09 15:24:03,035 INFO L125 PetriNetUnfolderBase]: For 72483/73608 co-relation queries the response was YES. [2023-12-09 15:24:03,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104480 conditions, 9044 events. 3965/9044 cut-off events. For 72483/73608 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 79801 event pairs, 40 based on Foata normal form. 37/8462 useless extension candidates. Maximal degree in co-relation 95002. Up to 6447 conditions per place. [2023-12-09 15:24:03,223 INFO L140 encePairwiseOnDemand]: 73/89 looper letters, 2427 selfloop transitions, 1479 changer transitions 421/4387 dead transitions. [2023-12-09 15:24:03,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 4387 transitions, 116977 flow [2023-12-09 15:24:03,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-09 15:24:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-12-09 15:24:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3175 transitions. [2023-12-09 15:24:03,228 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7590246234759742 [2023-12-09 15:24:03,228 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3175 transitions. [2023-12-09 15:24:03,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3175 transitions. [2023-12-09 15:24:03,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:03,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3175 transitions. [2023-12-09 15:24:03,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 67.55319148936171) internal successors, (3175), 47 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:03,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 89.0) internal successors, (4272), 48 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:03,239 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 89.0) internal successors, (4272), 48 states have internal predecessors, (4272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:03,239 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 585 predicate places. [2023-12-09 15:24:03,239 INFO L500 AbstractCegarLoop]: Abstraction has has 664 places, 4387 transitions, 116977 flow [2023-12-09 15:24:03,240 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 65.58823529411765) internal successors, (1115), 17 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:03,240 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:03,240 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:03,249 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 15:24:03,444 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-09 15:24:03,444 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 15:24:03,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1275048809, now seen corresponding path program 10 times [2023-12-09 15:24:03,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:03,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631082429] [2023-12-09 15:24:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:03,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:03,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631082429] [2023-12-09 15:24:03,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631082429] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:03,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175070473] [2023-12-09 15:24:03,611 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:24:03,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:03,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:03,612 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 15:24:03,613 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 15:24:03,675 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:24:03,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:03,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:24:03,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:03,738 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:03,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175070473] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:03,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:03,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-09 15:24:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423361787] [2023-12-09 15:24:03,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:03,869 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:24:03,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:24:03,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:24:03,870 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:24:03,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 4387 transitions, 116977 flow. Second operand has 18 states, 18 states have (on average 65.5) internal successors, (1179), 18 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:03,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:03,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:24:03,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:14,908 INFO L124 PetriNetUnfolderBase]: 5348/11738 cut-off events. [2023-12-09 15:24:14,908 INFO L125 PetriNetUnfolderBase]: For 96845/98178 co-relation queries the response was YES. [2023-12-09 15:24:14,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147731 conditions, 11738 events. 5348/11738 cut-off events. For 96845/98178 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 105109 event pairs, 45 based on Foata normal form. 40/10920 useless extension candidates. Maximal degree in co-relation 137637. Up to 8495 conditions per place. [2023-12-09 15:24:15,062 INFO L140 encePairwiseOnDemand]: 73/89 looper letters, 2542 selfloop transitions, 2868 changer transitions 460/5930 dead transitions. [2023-12-09 15:24:15,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 5930 transitions, 168873 flow [2023-12-09 15:24:15,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-12-09 15:24:15,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2023-12-09 15:24:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 7059 transitions. [2023-12-09 15:24:15,084 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7553772070626004 [2023-12-09 15:24:15,084 INFO L72 ComplementDD]: Start complementDD. Operand 105 states and 7059 transitions. [2023-12-09 15:24:15,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 7059 transitions. [2023-12-09 15:24:15,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:15,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 105 states and 7059 transitions. [2023-12-09 15:24:15,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 106 states, 105 states have (on average 67.22857142857143) internal successors, (7059), 105 states have internal predecessors, (7059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:15,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 106 states, 106 states have (on average 89.0) internal successors, (9434), 106 states have internal predecessors, (9434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:15,100 INFO L81 ComplementDD]: Finished complementDD. Result has 106 states, 106 states have (on average 89.0) internal successors, (9434), 106 states have internal predecessors, (9434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:15,100 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 689 predicate places. [2023-12-09 15:24:15,101 INFO L500 AbstractCegarLoop]: Abstraction has has 768 places, 5930 transitions, 168873 flow [2023-12-09 15:24:15,101 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.5) internal successors, (1179), 18 states have internal predecessors, (1179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:15,101 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:15,101 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:15,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 15:24:15,305 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,SelfDestructingSolverStorable15 [2023-12-09 15:24:15,305 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 15:24:15,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:15,306 INFO L85 PathProgramCache]: Analyzing trace with hash 605106067, now seen corresponding path program 11 times [2023-12-09 15:24:15,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:15,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381461494] [2023-12-09 15:24:15,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:15,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:15,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:15,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381461494] [2023-12-09 15:24:15,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381461494] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:15,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216946894] [2023-12-09 15:24:15,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:24:15,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:15,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:15,452 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 15:24:15,469 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 15:24:15,533 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:24:15,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:15,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:24:15,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:15,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:15,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216946894] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:15,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:15,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-09 15:24:15,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128688983] [2023-12-09 15:24:15,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:15,716 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:24:15,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:15,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:24:15,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:24:15,717 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:24:15,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 768 places, 5930 transitions, 168873 flow. Second operand has 18 states, 18 states have (on average 65.72222222222223) internal successors, (1183), 18 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:15,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:15,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:24:15,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:24:33,894 INFO L124 PetriNetUnfolderBase]: 6629/14530 cut-off events. [2023-12-09 15:24:33,894 INFO L125 PetriNetUnfolderBase]: For 135441/137224 co-relation queries the response was YES. [2023-12-09 15:24:33,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195488 conditions, 14530 events. 6629/14530 cut-off events. For 135441/137224 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 135440 event pairs, 49 based on Foata normal form. 40/13541 useless extension candidates. Maximal degree in co-relation 184672. Up to 10538 conditions per place. [2023-12-09 15:24:34,090 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 2862 selfloop transitions, 4083 changer transitions 503/7508 dead transitions. [2023-12-09 15:24:34,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 849 places, 7508 transitions, 228689 flow [2023-12-09 15:24:34,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-09 15:24:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-12-09 15:24:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 5516 transitions. [2023-12-09 15:24:34,109 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7558235132913127 [2023-12-09 15:24:34,109 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 5516 transitions. [2023-12-09 15:24:34,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 5516 transitions. [2023-12-09 15:24:34,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:24:34,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 5516 transitions. [2023-12-09 15:24:34,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 67.26829268292683) internal successors, (5516), 82 states have internal predecessors, (5516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:34,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 89.0) internal successors, (7387), 83 states have internal predecessors, (7387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:34,144 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 89.0) internal successors, (7387), 83 states have internal predecessors, (7387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:34,145 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 770 predicate places. [2023-12-09 15:24:34,145 INFO L500 AbstractCegarLoop]: Abstraction has has 849 places, 7508 transitions, 228689 flow [2023-12-09 15:24:34,145 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.72222222222223) internal successors, (1183), 18 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:34,145 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:24:34,145 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:24:34,153 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 15:24:34,351 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,SelfDestructingSolverStorable16 [2023-12-09 15:24:34,351 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 15:24:34,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:24:34,352 INFO L85 PathProgramCache]: Analyzing trace with hash 600559883, now seen corresponding path program 12 times [2023-12-09 15:24:34,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:24:34,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455497572] [2023-12-09 15:24:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:24:34,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:24:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:24:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:34,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:24:34,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455497572] [2023-12-09 15:24:34,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455497572] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:24:34,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813805791] [2023-12-09 15:24:34,483 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:24:34,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:24:34,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:24:34,484 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 15:24:34,486 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 15:24:34,572 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-09 15:24:34,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:24:34,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:24:34,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:24:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:34,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:24:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:24:34,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813805791] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:24:34,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:24:34,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-09 15:24:34,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782705096] [2023-12-09 15:24:34,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:24:34,749 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:24:34,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:24:34,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:24:34,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:24:34,750 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:24:34,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 849 places, 7508 transitions, 228689 flow. Second operand has 19 states, 19 states have (on average 65.52631578947368) internal successors, (1245), 19 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:24:34,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:24:34,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:24:34,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:25:05,817 INFO L124 PetriNetUnfolderBase]: 7823/17182 cut-off events. [2023-12-09 15:25:05,817 INFO L125 PetriNetUnfolderBase]: For 180736/182753 co-relation queries the response was YES. [2023-12-09 15:25:05,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245235 conditions, 17182 events. 7823/17182 cut-off events. For 180736/182753 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 165079 event pairs, 59 based on Foata normal form. 47/16030 useless extension candidates. Maximal degree in co-relation 228501. Up to 12409 conditions per place. [2023-12-09 15:25:06,065 INFO L140 encePairwiseOnDemand]: 76/89 looper letters, 3218 selfloop transitions, 5263 changer transitions 555/9096 dead transitions. [2023-12-09 15:25:06,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 987 places, 9096 transitions, 294857 flow [2023-12-09 15:25:06,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2023-12-09 15:25:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2023-12-09 15:25:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 9254 transitions. [2023-12-09 15:25:06,073 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7480397704308464 [2023-12-09 15:25:06,073 INFO L72 ComplementDD]: Start complementDD. Operand 139 states and 9254 transitions. [2023-12-09 15:25:06,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 9254 transitions. [2023-12-09 15:25:06,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:25:06,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 139 states and 9254 transitions. [2023-12-09 15:25:06,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 140 states, 139 states have (on average 66.57553956834532) internal successors, (9254), 139 states have internal predecessors, (9254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:06,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 140 states, 140 states have (on average 89.0) internal successors, (12460), 140 states have internal predecessors, (12460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:06,099 INFO L81 ComplementDD]: Finished complementDD. Result has 140 states, 140 states have (on average 89.0) internal successors, (12460), 140 states have internal predecessors, (12460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:06,099 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 908 predicate places. [2023-12-09 15:25:06,099 INFO L500 AbstractCegarLoop]: Abstraction has has 987 places, 9096 transitions, 294857 flow [2023-12-09 15:25:06,099 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 65.52631578947368) internal successors, (1245), 19 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:06,099 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:25:06,099 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:25:06,107 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 15:25:06,304 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,SelfDestructingSolverStorable17 [2023-12-09 15:25:06,305 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 15:25:06,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:25:06,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1084533073, now seen corresponding path program 13 times [2023-12-09 15:25:06,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:25:06,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140437625] [2023-12-09 15:25:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:25:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:25:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:25:06,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:06,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:25:06,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140437625] [2023-12-09 15:25:06,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140437625] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:25:06,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466507498] [2023-12-09 15:25:06,436 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:25:06,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:25:06,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:25:06,437 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 15:25:06,451 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 15:25:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:25:06,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:25:06,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:25:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:06,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:25:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:06,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466507498] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:25:06,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:25:06,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-09 15:25:06,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430778199] [2023-12-09 15:25:06,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:25:06,669 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:25:06,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:25:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:25:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:25:06,671 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:25:06,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 987 places, 9096 transitions, 294857 flow. Second operand has 19 states, 19 states have (on average 65.36842105263158) internal successors, (1242), 19 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:06,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:25:06,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:25:06,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:25:46,441 INFO L124 PetriNetUnfolderBase]: 8214/18252 cut-off events. [2023-12-09 15:25:46,441 INFO L125 PetriNetUnfolderBase]: For 214159/216149 co-relation queries the response was YES. [2023-12-09 15:25:46,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274488 conditions, 18252 events. 8214/18252 cut-off events. For 214159/216149 co-relation queries the response was YES. Maximal size of possible extension queue 906. Compared 178458 event pairs, 60 based on Foata normal form. 43/17060 useless extension candidates. Maximal degree in co-relation 273387. Up to 13091 conditions per place. [2023-12-09 15:25:46,717 INFO L140 encePairwiseOnDemand]: 75/89 looper letters, 3449 selfloop transitions, 5533 changer transitions 573/9615 dead transitions. [2023-12-09 15:25:46,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1117 places, 9615 transitions, 331123 flow [2023-12-09 15:25:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2023-12-09 15:25:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2023-12-09 15:25:46,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 8798 transitions. [2023-12-09 15:25:46,738 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7546101723990051 [2023-12-09 15:25:46,738 INFO L72 ComplementDD]: Start complementDD. Operand 131 states and 8798 transitions. [2023-12-09 15:25:46,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 8798 transitions. [2023-12-09 15:25:46,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:25:46,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 131 states and 8798 transitions. [2023-12-09 15:25:46,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 132 states, 131 states have (on average 67.16030534351145) internal successors, (8798), 131 states have internal predecessors, (8798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:46,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 132 states, 132 states have (on average 89.0) internal successors, (11748), 132 states have internal predecessors, (11748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:46,767 INFO L81 ComplementDD]: Finished complementDD. Result has 132 states, 132 states have (on average 89.0) internal successors, (11748), 132 states have internal predecessors, (11748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:46,767 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 1038 predicate places. [2023-12-09 15:25:46,767 INFO L500 AbstractCegarLoop]: Abstraction has has 1117 places, 9615 transitions, 331123 flow [2023-12-09 15:25:46,767 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 65.36842105263158) internal successors, (1242), 19 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:46,768 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:25:46,768 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:25:46,774 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 15:25:46,971 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:25:46,971 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 15:25:46,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:25:46,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2051627895, now seen corresponding path program 14 times [2023-12-09 15:25:46,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:25:46,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061864553] [2023-12-09 15:25:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:25:46,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:25:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:25:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:47,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:25:47,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061864553] [2023-12-09 15:25:47,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061864553] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:25:47,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369683843] [2023-12-09 15:25:47,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:25:47,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:25:47,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:25:47,108 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 15:25:47,110 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 15:25:47,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:25:47,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:25:47,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:25:47,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:25:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:47,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:25:47,360 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:25:47,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369683843] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:25:47,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:25:47,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-12-09 15:25:47,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669128028] [2023-12-09 15:25:47,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:25:47,361 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:25:47,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:25:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:25:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:25:47,362 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:25:47,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1117 places, 9615 transitions, 331123 flow. Second operand has 18 states, 18 states have (on average 65.44444444444444) internal successors, (1178), 18 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:25:47,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:25:47,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:25:47,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:26:36,037 INFO L124 PetriNetUnfolderBase]: 8971/20047 cut-off events. [2023-12-09 15:26:36,037 INFO L125 PetriNetUnfolderBase]: For 266456/268630 co-relation queries the response was YES. [2023-12-09 15:26:36,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316434 conditions, 20047 events. 8971/20047 cut-off events. For 266456/268630 co-relation queries the response was YES. Maximal size of possible extension queue 990. Compared 199329 event pairs, 61 based on Foata normal form. 41/18759 useless extension candidates. Maximal degree in co-relation 315285. Up to 14174 conditions per place. [2023-12-09 15:26:36,376 INFO L140 encePairwiseOnDemand]: 77/89 looper letters, 4655 selfloop transitions, 5203 changer transitions 618/10536 dead transitions. [2023-12-09 15:26:36,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1208 places, 10536 transitions, 383122 flow [2023-12-09 15:26:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-09 15:26:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2023-12-09 15:26:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 6127 transitions. [2023-12-09 15:26:36,380 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7482901807523205 [2023-12-09 15:26:36,380 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 6127 transitions. [2023-12-09 15:26:36,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 6127 transitions. [2023-12-09 15:26:36,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:26:36,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 6127 transitions. [2023-12-09 15:26:36,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 66.59782608695652) internal successors, (6127), 92 states have internal predecessors, (6127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:36,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 89.0) internal successors, (8277), 93 states have internal predecessors, (8277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:36,391 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 89.0) internal successors, (8277), 93 states have internal predecessors, (8277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:36,391 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 1129 predicate places. [2023-12-09 15:26:36,391 INFO L500 AbstractCegarLoop]: Abstraction has has 1208 places, 10536 transitions, 383122 flow [2023-12-09 15:26:36,391 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 65.44444444444444) internal successors, (1178), 18 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:36,391 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:26:36,392 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:26:36,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-09 15:26:36,596 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:26:36,597 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:26:36,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:26:36,598 INFO L85 PathProgramCache]: Analyzing trace with hash 81024365, now seen corresponding path program 15 times [2023-12-09 15:26:36,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:26:36,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842472721] [2023-12-09 15:26:36,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:26:36,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:26:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:26:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:26:36,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:26:36,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842472721] [2023-12-09 15:26:36,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842472721] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:26:36,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293824325] [2023-12-09 15:26:36,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:26:36,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:26:36,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:26:36,740 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 15:26:36,769 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 15:26:36,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:26:36,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:26:36,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:26:36,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:26:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:26:36,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:26:36,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:26:36,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293824325] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:26:36,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:26:36,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-09 15:26:36,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523530268] [2023-12-09 15:26:36,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:26:36,986 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:26:36,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:26:36,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:26:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:26:36,987 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:26:36,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1208 places, 10536 transitions, 383122 flow. Second operand has 19 states, 19 states have (on average 65.42105263157895) internal successors, (1243), 19 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:26:36,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:26:36,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:26:36,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:27:31,714 INFO L124 PetriNetUnfolderBase]: 9390/21061 cut-off events. [2023-12-09 15:27:31,714 INFO L125 PetriNetUnfolderBase]: For 307955/310526 co-relation queries the response was YES. [2023-12-09 15:27:31,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349782 conditions, 21061 events. 9390/21061 cut-off events. For 307955/310526 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 211792 event pairs, 71 based on Foata normal form. 49/19726 useless extension candidates. Maximal degree in co-relation 348585. Up to 14862 conditions per place. [2023-12-09 15:27:32,061 INFO L140 encePairwiseOnDemand]: 75/89 looper letters, 4397 selfloop transitions, 5835 changer transitions 636/10928 dead transitions. [2023-12-09 15:27:32,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1286 places, 10928 transitions, 419470 flow [2023-12-09 15:27:32,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-09 15:27:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2023-12-09 15:27:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 5916 transitions. [2023-12-09 15:27:32,065 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7640449438202247 [2023-12-09 15:27:32,065 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 5916 transitions. [2023-12-09 15:27:32,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 5916 transitions. [2023-12-09 15:27:32,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:27:32,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 5916 transitions. [2023-12-09 15:27:32,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 68.0) internal successors, (5916), 87 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:32,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 89.0) internal successors, (7832), 88 states have internal predecessors, (7832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:32,073 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 89.0) internal successors, (7832), 88 states have internal predecessors, (7832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:32,073 INFO L308 CegarLoopForPetriNet]: 79 programPoint places, 1207 predicate places. [2023-12-09 15:27:32,073 INFO L500 AbstractCegarLoop]: Abstraction has has 1286 places, 10928 transitions, 419470 flow [2023-12-09 15:27:32,074 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 65.42105263157895) internal successors, (1243), 19 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:32,074 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:27:32,074 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:27:32,102 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 15:27:32,279 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:32,279 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:27:32,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:27:32,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1890336789, now seen corresponding path program 16 times [2023-12-09 15:27:32,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:27:32,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845078799] [2023-12-09 15:27:32,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:27:32,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:27:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:27:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:32,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:27:32,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845078799] [2023-12-09 15:27:32,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845078799] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:27:32,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746252562] [2023-12-09 15:27:32,428 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:27:32,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:32,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:27:32,446 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:27:32,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-09 15:27:32,527 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:27:32,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:27:32,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-09 15:27:32,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:27:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:32,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:27:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:27:32,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746252562] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:27:32,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:27:32,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-12-09 15:27:32,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152093983] [2023-12-09 15:27:32,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:27:32,698 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-09 15:27:32,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:27:32,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-09 15:27:32,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-12-09 15:27:32,699 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 89 [2023-12-09 15:27:32,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1286 places, 10928 transitions, 419470 flow. Second operand has 17 states, 17 states have (on average 65.52941176470588) internal successors, (1114), 17 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:27:32,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:27:32,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 89 [2023-12-09 15:27:32,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:27:47,943 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 15:27:47,944 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:27:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-09 15:27:47,951 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:27:47,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-09 15:27:48,156 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:27:48,156 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 63/89 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 89891 conditions, 5009 events (2020/5008 cut-off events. For 81464/83451 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 50371 event pairs, 12 based on Foata normal form. 35/5277 useless extension candidates. Maximal degree in co-relation 86721. Up to 3493 conditions per place.). [2023-12-09 15:27:48,157 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:27:48,158 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:27:48,158 INFO L457 BasicCegarLoop]: Path program histogram: [16, 5, 1] [2023-12-09 15:27:48,160 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:27:48,160 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:27:48,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:27:48 BasicIcfg [2023-12-09 15:27:48,163 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:27:48,163 INFO L158 Benchmark]: Toolchain (without parser) took 262664.42ms. Allocated memory was 242.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 189.0MB in the beginning and 997.5MB in the end (delta: -808.5MB). Peak memory consumption was 1.9GB. Max. memory is 8.0GB. [2023-12-09 15:27:48,164 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 242.2MB. Free memory is still 189.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:27:48,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.60ms. Allocated memory is still 242.2MB. Free memory was 188.9MB in the beginning and 177.8MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:27:48,164 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.68ms. Allocated memory is still 242.2MB. Free memory was 177.8MB in the beginning and 176.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:27:48,164 INFO L158 Benchmark]: Boogie Preprocessor took 18.01ms. Allocated memory is still 242.2MB. Free memory was 176.0MB in the beginning and 174.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:27:48,164 INFO L158 Benchmark]: RCFGBuilder took 334.20ms. Allocated memory is still 242.2MB. Free memory was 174.7MB in the beginning and 212.3MB in the end (delta: -37.6MB). Peak memory consumption was 20.1MB. Max. memory is 8.0GB. [2023-12-09 15:27:48,164 INFO L158 Benchmark]: TraceAbstraction took 262084.21ms. Allocated memory was 242.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 211.2MB in the beginning and 997.5MB in the end (delta: -786.3MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-09 15:27:48,165 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 242.2MB. Free memory is still 189.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.60ms. Allocated memory is still 242.2MB. Free memory was 188.9MB in the beginning and 177.8MB in the end (delta: 11.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.68ms. Allocated memory is still 242.2MB. Free memory was 177.8MB in the beginning and 176.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.01ms. Allocated memory is still 242.2MB. Free memory was 176.0MB in the beginning and 174.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 334.20ms. Allocated memory is still 242.2MB. Free memory was 174.7MB in the beginning and 212.3MB in the end (delta: -37.6MB). Peak memory consumption was 20.1MB. Max. memory is 8.0GB. * TraceAbstraction took 262084.21ms. Allocated memory was 242.2MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 211.2MB in the beginning and 997.5MB in the end (delta: -786.3MB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 63/89 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 89891 conditions, 5009 events (2020/5008 cut-off events. For 81464/83451 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 50371 event pairs, 12 based on Foata normal form. 35/5277 useless extension candidates. Maximal degree in co-relation 86721. Up to 3493 conditions per place.). - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 63/89 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 89891 conditions, 5009 events (2020/5008 cut-off events. For 81464/83451 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 50371 event pairs, 12 based on Foata normal form. 35/5277 useless extension candidates. Maximal degree in co-relation 86721. Up to 3493 conditions per place.). - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (17states, 63/89 universal loopers) in iteration 22,while PetriNetUnfolder was constructing finite prefix that currently has 89891 conditions, 5009 events (2020/5008 cut-off events. For 81464/83451 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 50371 event pairs, 12 based on Foata normal form. 35/5277 useless extension candidates. Maximal degree in co-relation 86721. Up to 3493 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 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: 262.0s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 250.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5013 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5013 mSDsluCounter, 4287 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3580 mSDsCounter, 387 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12339 IncrementalHoareTripleChecker+Invalid, 12726 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 387 mSolverCounterUnsat, 707 mSDtfsCounter, 12339 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3854 GetRequests, 2478 SyntacticMatches, 25 SemanticMatches, 1351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47168 ImplicationChecksByTransitivity, 19.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=419470occurred in iteration=21, InterpolantAutomatonStates: 1236, 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, 0.8s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 2918 NumberOfCodeBlocks, 2918 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 4156 ConstructedInterpolants, 0 QuantifiedInterpolants, 12306 SizeOfPredicates, 115 NumberOfNonLiveVariables, 3018 ConjunctsInSsa, 229 ConjunctsInUnsatCore, 56 InterpolantComputations, 6 PerfectInterpolantSequences, 211/373 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