/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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/unroll-cond-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 23:48:05,275 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 23:48:05,342 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 [2023-11-29 23:48:05,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 23:48:05,367 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 23:48:05,367 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 23:48:05,368 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 23:48:05,368 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 23:48:05,368 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 23:48:05,372 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 23:48:05,373 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 23:48:05,373 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 23:48:05,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 23:48:05,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 23:48:05,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 23:48:05,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 23:48:05,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 23:48:05,375 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 23:48:05,375 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 23:48:05,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 23:48:05,375 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 23:48:05,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 23:48:05,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 23:48:05,376 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 23:48:05,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 23:48:05,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:48:05,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 23:48:05,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 23:48:05,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 23:48:05,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 23:48:05,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 23:48:05,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 23:48:05,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 23:48:05,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 23:48:05,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 23:48:05,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 23:48:05,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 23:48:05,585 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 23:48:05,585 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 23:48:05,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-11-29 23:48:06,589 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 23:48:06,699 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 23:48:06,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-11-29 23:48:06,704 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c809b7b0f/2022d6ca71714757bf42dde6899de454/FLAG07e3b4220 [2023-11-29 23:48:06,713 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c809b7b0f/2022d6ca71714757bf42dde6899de454 [2023-11-29 23:48:06,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 23:48:06,715 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 23:48:06,716 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 23:48:06,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 23:48:06,719 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 23:48:06,720 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,720 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a27ec08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06, skipping insertion in model container [2023-11-29 23:48:06,720 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,735 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 23:48:06,845 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/unroll-cond-5.wvr.c[3001,3014] [2023-11-29 23:48:06,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:48:06,858 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 23:48:06,875 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/unroll-cond-5.wvr.c[3001,3014] [2023-11-29 23:48:06,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:48:06,888 INFO L206 MainTranslator]: Completed translation [2023-11-29 23:48:06,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06 WrapperNode [2023-11-29 23:48:06,888 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 23:48:06,889 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 23:48:06,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 23:48:06,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 23:48:06,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,920 INFO L138 Inliner]: procedures = 24, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 209 [2023-11-29 23:48:06,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 23:48:06,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 23:48:06,921 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 23:48:06,921 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 23:48:06,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,930 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 23:48:06,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 23:48:06,944 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 23:48:06,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 23:48:06,945 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (1/1) ... [2023-11-29 23:48:06,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:48:06,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:48:06,968 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) [2023-11-29 23:48:06,987 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 [2023-11-29 23:48:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 23:48:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 23:48:06,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 23:48:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 23:48:06,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 23:48:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 23:48:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 23:48:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 23:48:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 23:48:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 23:48:06,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 23:48:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 23:48:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 23:48:06,998 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 23:48:07,066 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 23:48:07,068 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 23:48:07,375 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 23:48:07,384 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 23:48:07,385 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 23:48:07,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:48:07 BoogieIcfgContainer [2023-11-29 23:48:07,386 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 23:48:07,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 23:48:07,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 23:48:07,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 23:48:07,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:48:06" (1/3) ... [2023-11-29 23:48:07,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4235e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:48:07, skipping insertion in model container [2023-11-29 23:48:07,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:48:06" (2/3) ... [2023-11-29 23:48:07,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d4235e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:48:07, skipping insertion in model container [2023-11-29 23:48:07,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:48:07" (3/3) ... [2023-11-29 23:48:07,391 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2023-11-29 23:48:07,402 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 23:48:07,402 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 23:48:07,402 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 23:48:07,466 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 23:48:07,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 271 transitions, 556 flow [2023-11-29 23:48:07,554 INFO L124 PetriNetUnfolderBase]: 24/269 cut-off events. [2023-11-29 23:48:07,554 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:48:07,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 269 events. 24/269 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 516 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2023-11-29 23:48:07,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 271 transitions, 556 flow [2023-11-29 23:48:07,567 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 260 transitions, 532 flow [2023-11-29 23:48:07,574 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 23:48:07,578 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;@19d3be69, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 23:48:07,578 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 23:48:07,604 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 23:48:07,604 INFO L124 PetriNetUnfolderBase]: 20/218 cut-off events. [2023-11-29 23:48:07,604 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:48:07,604 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:07,605 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:07,605 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:07,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -685122436, now seen corresponding path program 1 times [2023-11-29 23:48:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:07,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38044797] [2023-11-29 23:48:07,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:07,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:08,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:08,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38044797] [2023-11-29 23:48:08,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38044797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:08,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:08,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 23:48:08,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330903715] [2023-11-29 23:48:08,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:08,107 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 23:48:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:08,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 23:48:08,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 23:48:08,128 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 271 [2023-11-29 23:48:08,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 260 transitions, 532 flow. Second operand has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:08,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:08,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 271 [2023-11-29 23:48:08,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:08,322 INFO L124 PetriNetUnfolderBase]: 201/972 cut-off events. [2023-11-29 23:48:08,322 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-11-29 23:48:08,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 972 events. 201/972 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4905 event pairs, 84 based on Foata normal form. 74/877 useless extension candidates. Maximal degree in co-relation 1224. Up to 279 conditions per place. [2023-11-29 23:48:08,333 INFO L140 encePairwiseOnDemand]: 249/271 looper letters, 46 selfloop transitions, 4 changer transitions 4/256 dead transitions. [2023-11-29 23:48:08,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 256 transitions, 630 flow [2023-11-29 23:48:08,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 23:48:08,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 23:48:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 939 transitions. [2023-11-29 23:48:08,347 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8662361623616236 [2023-11-29 23:48:08,348 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 939 transitions. [2023-11-29 23:48:08,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 939 transitions. [2023-11-29 23:48:08,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:08,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 939 transitions. [2023-11-29 23:48:08,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 234.75) internal successors, (939), 4 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:08,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:08,363 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 271.0) internal successors, (1355), 5 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:08,366 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 3 predicate places. [2023-11-29 23:48:08,366 INFO L500 AbstractCegarLoop]: Abstraction has has 246 places, 256 transitions, 630 flow [2023-11-29 23:48:08,367 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:08,367 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:08,367 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:08,367 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 23:48:08,368 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:08,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash 289958955, now seen corresponding path program 1 times [2023-11-29 23:48:08,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:08,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708169239] [2023-11-29 23:48:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:08,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:08,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:08,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:08,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708169239] [2023-11-29 23:48:08,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708169239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:08,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:08,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:48:08,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884022971] [2023-11-29 23:48:08,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:08,835 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:48:08,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:08,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:48:08,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:48:08,838 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 271 [2023-11-29 23:48:08,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 256 transitions, 630 flow. Second operand has 6 states, 6 states have (on average 217.66666666666666) internal successors, (1306), 6 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:08,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:08,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 271 [2023-11-29 23:48:08,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:09,089 INFO L124 PetriNetUnfolderBase]: 221/1048 cut-off events. [2023-11-29 23:48:09,089 INFO L125 PetriNetUnfolderBase]: For 246/322 co-relation queries the response was YES. [2023-11-29 23:48:09,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 1048 events. 221/1048 cut-off events. For 246/322 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5379 event pairs, 84 based on Foata normal form. 6/875 useless extension candidates. Maximal degree in co-relation 1699. Up to 311 conditions per place. [2023-11-29 23:48:09,096 INFO L140 encePairwiseOnDemand]: 263/271 looper letters, 57 selfloop transitions, 7 changer transitions 4/269 dead transitions. [2023-11-29 23:48:09,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 269 transitions, 817 flow [2023-11-29 23:48:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 23:48:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 23:48:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1570 transitions. [2023-11-29 23:48:09,099 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8276225619399051 [2023-11-29 23:48:09,100 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1570 transitions. [2023-11-29 23:48:09,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1570 transitions. [2023-11-29 23:48:09,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:09,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1570 transitions. [2023-11-29 23:48:09,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 224.28571428571428) internal successors, (1570), 7 states have internal predecessors, (1570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:09,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 271.0) internal successors, (2168), 8 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:09,106 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 271.0) internal successors, (2168), 8 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:09,107 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 9 predicate places. [2023-11-29 23:48:09,107 INFO L500 AbstractCegarLoop]: Abstraction has has 252 places, 269 transitions, 817 flow [2023-11-29 23:48:09,107 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 217.66666666666666) internal successors, (1306), 6 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:09,108 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:09,108 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:09,108 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 23:48:09,108 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:09,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:09,109 INFO L85 PathProgramCache]: Analyzing trace with hash -99093089, now seen corresponding path program 1 times [2023-11-29 23:48:09,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:09,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27444428] [2023-11-29 23:48:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:09,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:09,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:09,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27444428] [2023-11-29 23:48:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27444428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:09,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:09,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 23:48:09,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537601164] [2023-11-29 23:48:09,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:09,432 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 23:48:09,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:09,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 23:48:09,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 23:48:09,435 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 271 [2023-11-29 23:48:09,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 269 transitions, 817 flow. Second operand has 8 states, 8 states have (on average 216.375) internal successors, (1731), 8 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:09,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:09,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 271 [2023-11-29 23:48:09,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:09,781 INFO L124 PetriNetUnfolderBase]: 231/1060 cut-off events. [2023-11-29 23:48:09,782 INFO L125 PetriNetUnfolderBase]: For 452/552 co-relation queries the response was YES. [2023-11-29 23:48:09,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 1060 events. 231/1060 cut-off events. For 452/552 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 5311 event pairs, 78 based on Foata normal form. 6/888 useless extension candidates. Maximal degree in co-relation 2126. Up to 325 conditions per place. [2023-11-29 23:48:09,788 INFO L140 encePairwiseOnDemand]: 259/271 looper letters, 65 selfloop transitions, 11 changer transitions 4/280 dead transitions. [2023-11-29 23:48:09,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 280 transitions, 1040 flow [2023-11-29 23:48:09,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 23:48:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-29 23:48:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2217 transitions. [2023-11-29 23:48:09,792 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8180811808118081 [2023-11-29 23:48:09,792 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2217 transitions. [2023-11-29 23:48:09,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2217 transitions. [2023-11-29 23:48:09,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:09,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2217 transitions. [2023-11-29 23:48:09,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 221.7) internal successors, (2217), 10 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:09,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 271.0) internal successors, (2981), 11 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:09,801 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 271.0) internal successors, (2981), 11 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:09,801 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 18 predicate places. [2023-11-29 23:48:09,801 INFO L500 AbstractCegarLoop]: Abstraction has has 261 places, 280 transitions, 1040 flow [2023-11-29 23:48:09,802 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 216.375) internal successors, (1731), 8 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:09,802 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:09,802 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:09,803 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 23:48:09,803 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:09,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:09,803 INFO L85 PathProgramCache]: Analyzing trace with hash -436526887, now seen corresponding path program 1 times [2023-11-29 23:48:09,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:09,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538663731] [2023-11-29 23:48:09,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:09,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:10,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:10,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538663731] [2023-11-29 23:48:10,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538663731] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:10,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:10,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:48:10,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47384278] [2023-11-29 23:48:10,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:10,037 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:48:10,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:10,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:48:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:48:10,039 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 271 [2023-11-29 23:48:10,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 280 transitions, 1040 flow. Second operand has 6 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:10,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:10,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 271 [2023-11-29 23:48:10,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:10,330 INFO L124 PetriNetUnfolderBase]: 372/2018 cut-off events. [2023-11-29 23:48:10,330 INFO L125 PetriNetUnfolderBase]: For 1215/1299 co-relation queries the response was YES. [2023-11-29 23:48:10,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4445 conditions, 2018 events. 372/2018 cut-off events. For 1215/1299 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 14315 event pairs, 168 based on Foata normal form. 0/1792 useless extension candidates. Maximal degree in co-relation 4247. Up to 466 conditions per place. [2023-11-29 23:48:10,342 INFO L140 encePairwiseOnDemand]: 264/271 looper letters, 113 selfloop transitions, 9 changer transitions 4/327 dead transitions. [2023-11-29 23:48:10,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 327 transitions, 1591 flow [2023-11-29 23:48:10,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 23:48:10,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 23:48:10,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1588 transitions. [2023-11-29 23:48:10,345 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8371112282551397 [2023-11-29 23:48:10,345 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1588 transitions. [2023-11-29 23:48:10,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1588 transitions. [2023-11-29 23:48:10,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:10,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1588 transitions. [2023-11-29 23:48:10,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 226.85714285714286) internal successors, (1588), 7 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:10,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 271.0) internal successors, (2168), 8 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:10,350 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 271.0) internal successors, (2168), 8 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:10,351 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 24 predicate places. [2023-11-29 23:48:10,351 INFO L500 AbstractCegarLoop]: Abstraction has has 267 places, 327 transitions, 1591 flow [2023-11-29 23:48:10,351 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:10,351 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:10,351 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:10,352 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 23:48:10,352 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:10,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash 2114742039, now seen corresponding path program 2 times [2023-11-29 23:48:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32412278] [2023-11-29 23:48:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:10,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:10,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:10,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32412278] [2023-11-29 23:48:10,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32412278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:10,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:10,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:48:10,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407231388] [2023-11-29 23:48:10,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:10,511 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:48:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:10,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:48:10,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:48:10,513 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 271 [2023-11-29 23:48:10,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 327 transitions, 1591 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:10,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:10,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 271 [2023-11-29 23:48:10,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:11,016 INFO L124 PetriNetUnfolderBase]: 617/3058 cut-off events. [2023-11-29 23:48:11,016 INFO L125 PetriNetUnfolderBase]: For 3599/4260 co-relation queries the response was YES. [2023-11-29 23:48:11,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8174 conditions, 3058 events. 617/3058 cut-off events. For 3599/4260 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 24443 event pairs, 140 based on Foata normal form. 2/2697 useless extension candidates. Maximal degree in co-relation 7873. Up to 761 conditions per place. [2023-11-29 23:48:11,032 INFO L140 encePairwiseOnDemand]: 263/271 looper letters, 238 selfloop transitions, 25 changer transitions 4/468 dead transitions. [2023-11-29 23:48:11,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 468 transitions, 3527 flow [2023-11-29 23:48:11,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 23:48:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 23:48:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1389 transitions. [2023-11-29 23:48:11,035 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8542435424354243 [2023-11-29 23:48:11,035 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1389 transitions. [2023-11-29 23:48:11,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1389 transitions. [2023-11-29 23:48:11,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:11,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1389 transitions. [2023-11-29 23:48:11,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 231.5) internal successors, (1389), 6 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:11,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:11,039 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:11,040 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 29 predicate places. [2023-11-29 23:48:11,040 INFO L500 AbstractCegarLoop]: Abstraction has has 272 places, 468 transitions, 3527 flow [2023-11-29 23:48:11,040 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:11,040 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:11,040 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:11,041 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 23:48:11,041 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:11,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1996055591, now seen corresponding path program 3 times [2023-11-29 23:48:11,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:11,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28588891] [2023-11-29 23:48:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:11,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:11,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:11,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28588891] [2023-11-29 23:48:11,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28588891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:11,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:11,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:48:11,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923856767] [2023-11-29 23:48:11,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:11,211 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:48:11,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:11,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:48:11,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:48:11,213 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 271 [2023-11-29 23:48:11,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 468 transitions, 3527 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:11,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:11,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 271 [2023-11-29 23:48:11,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:11,590 INFO L124 PetriNetUnfolderBase]: 664/3215 cut-off events. [2023-11-29 23:48:11,590 INFO L125 PetriNetUnfolderBase]: For 4799/5426 co-relation queries the response was YES. [2023-11-29 23:48:11,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9827 conditions, 3215 events. 664/3215 cut-off events. For 4799/5426 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 25863 event pairs, 177 based on Foata normal form. 20/2859 useless extension candidates. Maximal degree in co-relation 9500. Up to 771 conditions per place. [2023-11-29 23:48:11,608 INFO L140 encePairwiseOnDemand]: 264/271 looper letters, 267 selfloop transitions, 22 changer transitions 4/494 dead transitions. [2023-11-29 23:48:11,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 494 transitions, 4402 flow [2023-11-29 23:48:11,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:48:11,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:48:11,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1161 transitions. [2023-11-29 23:48:11,611 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8568265682656827 [2023-11-29 23:48:11,611 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1161 transitions. [2023-11-29 23:48:11,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1161 transitions. [2023-11-29 23:48:11,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:11,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1161 transitions. [2023-11-29 23:48:11,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 232.2) internal successors, (1161), 5 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:11,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:11,615 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:11,617 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 33 predicate places. [2023-11-29 23:48:11,617 INFO L500 AbstractCegarLoop]: Abstraction has has 276 places, 494 transitions, 4402 flow [2023-11-29 23:48:11,618 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:11,618 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:11,618 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:11,618 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 23:48:11,618 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:11,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:11,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1534693297, now seen corresponding path program 4 times [2023-11-29 23:48:11,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:11,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379752133] [2023-11-29 23:48:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:11,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:11,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:11,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379752133] [2023-11-29 23:48:11,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379752133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:11,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:11,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:48:11,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878410468] [2023-11-29 23:48:11,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:11,784 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:48:11,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:11,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:48:11,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:48:11,785 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 271 [2023-11-29 23:48:11,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 494 transitions, 4402 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:11,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:11,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 271 [2023-11-29 23:48:11,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:12,186 INFO L124 PetriNetUnfolderBase]: 658/3265 cut-off events. [2023-11-29 23:48:12,187 INFO L125 PetriNetUnfolderBase]: For 6227/6797 co-relation queries the response was YES. [2023-11-29 23:48:12,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10995 conditions, 3265 events. 658/3265 cut-off events. For 6227/6797 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 26437 event pairs, 189 based on Foata normal form. 28/2916 useless extension candidates. Maximal degree in co-relation 9608. Up to 769 conditions per place. [2023-11-29 23:48:12,209 INFO L140 encePairwiseOnDemand]: 264/271 looper letters, 263 selfloop transitions, 19 changer transitions 4/487 dead transitions. [2023-11-29 23:48:12,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 487 transitions, 4862 flow [2023-11-29 23:48:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:48:12,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:48:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1157 transitions. [2023-11-29 23:48:12,211 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8538745387453874 [2023-11-29 23:48:12,212 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1157 transitions. [2023-11-29 23:48:12,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1157 transitions. [2023-11-29 23:48:12,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:12,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1157 transitions. [2023-11-29 23:48:12,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 231.4) internal successors, (1157), 5 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:12,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:12,216 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:12,216 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 37 predicate places. [2023-11-29 23:48:12,217 INFO L500 AbstractCegarLoop]: Abstraction has has 280 places, 487 transitions, 4862 flow [2023-11-29 23:48:12,217 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:12,217 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:12,217 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:12,217 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 23:48:12,217 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:12,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:12,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1459470247, now seen corresponding path program 5 times [2023-11-29 23:48:12,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:12,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138835426] [2023-11-29 23:48:12,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:12,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:12,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:12,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:12,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138835426] [2023-11-29 23:48:12,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138835426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:12,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:12,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:48:12,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236226100] [2023-11-29 23:48:12,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:12,373 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:48:12,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:48:12,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:48:12,374 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 271 [2023-11-29 23:48:12,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 487 transitions, 4862 flow. Second operand has 6 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:12,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:12,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 271 [2023-11-29 23:48:12,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:12,802 INFO L124 PetriNetUnfolderBase]: 693/3478 cut-off events. [2023-11-29 23:48:12,803 INFO L125 PetriNetUnfolderBase]: For 8605/9264 co-relation queries the response was YES. [2023-11-29 23:48:12,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12864 conditions, 3478 events. 693/3478 cut-off events. For 8605/9264 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 28751 event pairs, 171 based on Foata normal form. 26/3112 useless extension candidates. Maximal degree in co-relation 10432. Up to 812 conditions per place. [2023-11-29 23:48:12,825 INFO L140 encePairwiseOnDemand]: 264/271 looper letters, 280 selfloop transitions, 20 changer transitions 4/505 dead transitions. [2023-11-29 23:48:12,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 505 transitions, 5738 flow [2023-11-29 23:48:12,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 23:48:12,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 23:48:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1383 transitions. [2023-11-29 23:48:12,831 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8505535055350554 [2023-11-29 23:48:12,831 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1383 transitions. [2023-11-29 23:48:12,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1383 transitions. [2023-11-29 23:48:12,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:12,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1383 transitions. [2023-11-29 23:48:12,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.5) internal successors, (1383), 6 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:12,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:12,837 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:12,837 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 42 predicate places. [2023-11-29 23:48:12,837 INFO L500 AbstractCegarLoop]: Abstraction has has 285 places, 505 transitions, 5738 flow [2023-11-29 23:48:12,838 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:12,838 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:12,838 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:12,838 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 23:48:12,838 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:12,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:12,839 INFO L85 PathProgramCache]: Analyzing trace with hash -879813859, now seen corresponding path program 6 times [2023-11-29 23:48:12,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:12,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867380876] [2023-11-29 23:48:12,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:12,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:12,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:12,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867380876] [2023-11-29 23:48:12,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867380876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:12,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:12,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:48:12,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380109750] [2023-11-29 23:48:12,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:12,958 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:48:12,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:12,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:48:12,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:48:12,959 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 271 [2023-11-29 23:48:12,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 505 transitions, 5738 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:12,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:12,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 271 [2023-11-29 23:48:12,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:13,325 INFO L124 PetriNetUnfolderBase]: 691/3376 cut-off events. [2023-11-29 23:48:13,325 INFO L125 PetriNetUnfolderBase]: For 11600/12849 co-relation queries the response was YES. [2023-11-29 23:48:13,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14002 conditions, 3376 events. 691/3376 cut-off events. For 11600/12849 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 27426 event pairs, 184 based on Foata normal form. 22/3012 useless extension candidates. Maximal degree in co-relation 13597. Up to 1061 conditions per place. [2023-11-29 23:48:13,348 INFO L140 encePairwiseOnDemand]: 264/271 looper letters, 277 selfloop transitions, 22 changer transitions 4/504 dead transitions. [2023-11-29 23:48:13,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 504 transitions, 6318 flow [2023-11-29 23:48:13,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:48:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:48:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1137 transitions. [2023-11-29 23:48:13,351 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8391143911439114 [2023-11-29 23:48:13,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1137 transitions. [2023-11-29 23:48:13,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1137 transitions. [2023-11-29 23:48:13,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:13,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1137 transitions. [2023-11-29 23:48:13,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:13,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:13,355 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:13,355 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 46 predicate places. [2023-11-29 23:48:13,355 INFO L500 AbstractCegarLoop]: Abstraction has has 289 places, 504 transitions, 6318 flow [2023-11-29 23:48:13,356 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:13,356 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:13,356 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:13,356 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 23:48:13,356 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:13,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:13,357 INFO L85 PathProgramCache]: Analyzing trace with hash 406669437, now seen corresponding path program 7 times [2023-11-29 23:48:13,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:13,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551649213] [2023-11-29 23:48:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:13,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:13,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:13,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551649213] [2023-11-29 23:48:13,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551649213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:13,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:13,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:48:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368692270] [2023-11-29 23:48:13,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:13,561 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:48:13,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:13,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:48:13,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:48:13,563 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 271 [2023-11-29 23:48:13,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 504 transitions, 6318 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:13,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:13,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 271 [2023-11-29 23:48:13,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:14,051 INFO L124 PetriNetUnfolderBase]: 685/3430 cut-off events. [2023-11-29 23:48:14,051 INFO L125 PetriNetUnfolderBase]: For 13724/14757 co-relation queries the response was YES. [2023-11-29 23:48:14,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15189 conditions, 3430 events. 685/3430 cut-off events. For 13724/14757 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 28116 event pairs, 192 based on Foata normal form. 17/3063 useless extension candidates. Maximal degree in co-relation 12436. Up to 1059 conditions per place. [2023-11-29 23:48:14,080 INFO L140 encePairwiseOnDemand]: 264/271 looper letters, 273 selfloop transitions, 19 changer transitions 4/497 dead transitions. [2023-11-29 23:48:14,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 497 transitions, 6756 flow [2023-11-29 23:48:14,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:48:14,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:48:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1137 transitions. [2023-11-29 23:48:14,082 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8391143911439114 [2023-11-29 23:48:14,082 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1137 transitions. [2023-11-29 23:48:14,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1137 transitions. [2023-11-29 23:48:14,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:14,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1137 transitions. [2023-11-29 23:48:14,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:14,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:14,087 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 271.0) internal successors, (1626), 6 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:14,088 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 50 predicate places. [2023-11-29 23:48:14,088 INFO L500 AbstractCegarLoop]: Abstraction has has 293 places, 497 transitions, 6756 flow [2023-11-29 23:48:14,088 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:14,089 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:14,089 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:14,089 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 23:48:14,089 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:14,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:14,089 INFO L85 PathProgramCache]: Analyzing trace with hash -777660335, now seen corresponding path program 8 times [2023-11-29 23:48:14,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:14,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998011191] [2023-11-29 23:48:14,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:14,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:14,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:14,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:14,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998011191] [2023-11-29 23:48:14,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998011191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:14,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:48:14,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:48:14,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618446053] [2023-11-29 23:48:14,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:14,284 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:48:14,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:48:14,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:48:14,286 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 271 [2023-11-29 23:48:14,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 497 transitions, 6756 flow. Second operand has 6 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:14,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:14,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 271 [2023-11-29 23:48:14,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:14,757 INFO L124 PetriNetUnfolderBase]: 659/3312 cut-off events. [2023-11-29 23:48:14,758 INFO L125 PetriNetUnfolderBase]: For 15568/16409 co-relation queries the response was YES. [2023-11-29 23:48:14,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15778 conditions, 3312 events. 659/3312 cut-off events. For 15568/16409 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 26953 event pairs, 192 based on Foata normal form. 15/2964 useless extension candidates. Maximal degree in co-relation 13173. Up to 1012 conditions per place. [2023-11-29 23:48:14,787 INFO L140 encePairwiseOnDemand]: 264/271 looper letters, 249 selfloop transitions, 20 changer transitions 4/474 dead transitions. [2023-11-29 23:48:14,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 474 transitions, 6767 flow [2023-11-29 23:48:14,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 23:48:14,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 23:48:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1363 transitions. [2023-11-29 23:48:14,790 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8382533825338253 [2023-11-29 23:48:14,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1363 transitions. [2023-11-29 23:48:14,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1363 transitions. [2023-11-29 23:48:14,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:14,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1363 transitions. [2023-11-29 23:48:14,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.16666666666666) internal successors, (1363), 6 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:14,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:14,795 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 271.0) internal successors, (1897), 7 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:14,796 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 55 predicate places. [2023-11-29 23:48:14,796 INFO L500 AbstractCegarLoop]: Abstraction has has 298 places, 474 transitions, 6767 flow [2023-11-29 23:48:14,796 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:14,796 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:14,797 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:14,797 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 23:48:14,797 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:14,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:14,798 INFO L85 PathProgramCache]: Analyzing trace with hash 471924353, now seen corresponding path program 1 times [2023-11-29 23:48:14,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:14,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722749931] [2023-11-29 23:48:14,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:14,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:15,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722749931] [2023-11-29 23:48:15,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722749931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:48:15,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979689276] [2023-11-29 23:48:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:15,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:48:15,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:48:15,050 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) [2023-11-29 23:48:15,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 23:48:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:15,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 23:48:15,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:48:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:48:15,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 23:48:15,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979689276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:48:15,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 23:48:15,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-29 23:48:15,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986444208] [2023-11-29 23:48:15,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:48:15,309 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 23:48:15,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:15,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 23:48:15,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 23:48:15,310 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 271 [2023-11-29 23:48:15,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 474 transitions, 6767 flow. Second operand has 8 states, 8 states have (on average 171.625) internal successors, (1373), 8 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:15,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:15,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 271 [2023-11-29 23:48:15,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:16,117 INFO L124 PetriNetUnfolderBase]: 1240/4750 cut-off events. [2023-11-29 23:48:16,117 INFO L125 PetriNetUnfolderBase]: For 42370/45335 co-relation queries the response was YES. [2023-11-29 23:48:16,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24633 conditions, 4750 events. 1240/4750 cut-off events. For 42370/45335 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 40062 event pairs, 520 based on Foata normal form. 10/4265 useless extension candidates. Maximal degree in co-relation 16653. Up to 1662 conditions per place. [2023-11-29 23:48:16,150 INFO L140 encePairwiseOnDemand]: 246/271 looper letters, 93 selfloop transitions, 17 changer transitions 52/527 dead transitions. [2023-11-29 23:48:16,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 527 transitions, 8014 flow [2023-11-29 23:48:16,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 23:48:16,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 23:48:16,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2118 transitions. [2023-11-29 23:48:16,153 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6512915129151291 [2023-11-29 23:48:16,153 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2118 transitions. [2023-11-29 23:48:16,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2118 transitions. [2023-11-29 23:48:16,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:16,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2118 transitions. [2023-11-29 23:48:16,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 176.5) internal successors, (2118), 12 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:16,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 271.0) internal successors, (3523), 13 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:16,161 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 271.0) internal successors, (3523), 13 states have internal predecessors, (3523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:16,162 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 66 predicate places. [2023-11-29 23:48:16,163 INFO L500 AbstractCegarLoop]: Abstraction has has 309 places, 527 transitions, 8014 flow [2023-11-29 23:48:16,163 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 171.625) internal successors, (1373), 8 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:16,163 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:16,163 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:16,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 23:48:16,368 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 23:48:16,369 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:16,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash -2122624870, now seen corresponding path program 1 times [2023-11-29 23:48:16,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:16,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193457635] [2023-11-29 23:48:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:16,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:48:16,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193457635] [2023-11-29 23:48:16,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193457635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:48:16,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294627014] [2023-11-29 23:48:16,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:16,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:48:16,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:48:16,662 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) [2023-11-29 23:48:16,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 23:48:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:16,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 23:48:16,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:48:17,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:48:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:17,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:48:17,981 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:48:17,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 23:48:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:18,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294627014] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:48:18,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:48:18,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 23, 18] total 40 [2023-11-29 23:48:18,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032960529] [2023-11-29 23:48:18,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:48:18,565 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 23:48:18,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:18,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 23:48:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 23:48:18,568 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 271 [2023-11-29 23:48:18,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 527 transitions, 8014 flow. Second operand has 40 states, 40 states have (on average 71.4) internal successors, (2856), 40 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:18,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:18,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 271 [2023-11-29 23:48:18,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:40,388 INFO L124 PetriNetUnfolderBase]: 37594/76206 cut-off events. [2023-11-29 23:48:40,388 INFO L125 PetriNetUnfolderBase]: For 563782/564714 co-relation queries the response was YES. [2023-11-29 23:48:40,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346948 conditions, 76206 events. 37594/76206 cut-off events. For 563782/564714 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 778851 event pairs, 2206 based on Foata normal form. 92/70055 useless extension candidates. Maximal degree in co-relation 243552. Up to 15034 conditions per place. [2023-11-29 23:48:41,183 INFO L140 encePairwiseOnDemand]: 162/271 looper letters, 3602 selfloop transitions, 864 changer transitions 917/5440 dead transitions. [2023-11-29 23:48:41,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 5440 transitions, 76502 flow [2023-11-29 23:48:41,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2023-11-29 23:48:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2023-11-29 23:48:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 16399 transitions. [2023-11-29 23:48:41,203 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3056207834805621 [2023-11-29 23:48:41,203 INFO L72 ComplementDD]: Start complementDD. Operand 198 states and 16399 transitions. [2023-11-29 23:48:41,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 198 states and 16399 transitions. [2023-11-29 23:48:41,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:41,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 198 states and 16399 transitions. [2023-11-29 23:48:41,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 199 states, 198 states have (on average 82.82323232323232) internal successors, (16399), 198 states have internal predecessors, (16399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:41,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 199 states, 199 states have (on average 271.0) internal successors, (53929), 199 states have internal predecessors, (53929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:41,284 INFO L81 ComplementDD]: Finished complementDD. Result has 199 states, 199 states have (on average 271.0) internal successors, (53929), 199 states have internal predecessors, (53929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:41,284 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 263 predicate places. [2023-11-29 23:48:41,284 INFO L500 AbstractCegarLoop]: Abstraction has has 506 places, 5440 transitions, 76502 flow [2023-11-29 23:48:41,285 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 71.4) internal successors, (2856), 40 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:41,285 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:41,285 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:41,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 23:48:41,490 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,SelfDestructingSolverStorable12 [2023-11-29 23:48:41,491 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:41,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:41,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1850855168, now seen corresponding path program 2 times [2023-11-29 23:48:41,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:41,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302307750] [2023-11-29 23:48:41,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:41,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:41,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:48:41,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:41,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302307750] [2023-11-29 23:48:41,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302307750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:48:41,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357631306] [2023-11-29 23:48:41,906 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:48:41,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:48:41,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:48:41,907 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) [2023-11-29 23:48:41,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 23:48:42,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:48:42,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:48:42,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 23:48:42,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:48:42,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 23:48:42,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 23:48:42,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 23:48:42,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:48:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:42,853 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:48:45,309 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int)) (~x2~0 Int) (v_ArrVal_181 (Array Int Int))) (or (< c_~size~0 (+ ~x2~0 1)) (< ~x2~0 0) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_180) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_181) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))) (select .cse0 (+ (* c_~x1~0 4) c_~f~0.offset)))))) is different from false [2023-11-29 23:48:45,815 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:48:45,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 44 [2023-11-29 23:48:45,828 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:48:45,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 198 treesize of output 169 [2023-11-29 23:48:45,836 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 23:48:45,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2023-11-29 23:48:45,844 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 23:48:45,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 20 [2023-11-29 23:48:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:46,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357631306] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:48:46,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:48:46,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 24] total 50 [2023-11-29 23:48:46,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872358359] [2023-11-29 23:48:46,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:48:46,174 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 23:48:46,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 23:48:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2108, Unknown=19, NotChecked=94, Total=2450 [2023-11-29 23:48:46,177 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 271 [2023-11-29 23:48:46,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 5440 transitions, 76502 flow. Second operand has 50 states, 50 states have (on average 63.08) internal successors, (3154), 50 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:48:46,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:46,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 271 [2023-11-29 23:48:46,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:50:02,865 INFO L124 PetriNetUnfolderBase]: 60428/122956 cut-off events. [2023-11-29 23:50:02,865 INFO L125 PetriNetUnfolderBase]: For 884663/888429 co-relation queries the response was YES. [2023-11-29 23:50:03,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640192 conditions, 122956 events. 60428/122956 cut-off events. For 884663/888429 co-relation queries the response was YES. Maximal size of possible extension queue 2162. Compared 1341702 event pairs, 3302 based on Foata normal form. 578/114650 useless extension candidates. Maximal degree in co-relation 472065. Up to 34533 conditions per place. [2023-11-29 23:50:04,000 INFO L140 encePairwiseOnDemand]: 159/271 looper letters, 7988 selfloop transitions, 1783 changer transitions 2205/12030 dead transitions. [2023-11-29 23:50:04,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 821 places, 12030 transitions, 174874 flow [2023-11-29 23:50:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 316 states. [2023-11-29 23:50:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2023-11-29 23:50:04,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 21604 transitions. [2023-11-29 23:50:04,020 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.25227707973282265 [2023-11-29 23:50:04,020 INFO L72 ComplementDD]: Start complementDD. Operand 316 states and 21604 transitions. [2023-11-29 23:50:04,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 316 states and 21604 transitions. [2023-11-29 23:50:04,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:50:04,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 316 states and 21604 transitions. [2023-11-29 23:50:04,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 317 states, 316 states have (on average 68.36708860759494) internal successors, (21604), 316 states have internal predecessors, (21604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:50:04,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 317 states, 317 states have (on average 271.0) internal successors, (85907), 317 states have internal predecessors, (85907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:50:04,118 INFO L81 ComplementDD]: Finished complementDD. Result has 317 states, 317 states have (on average 271.0) internal successors, (85907), 317 states have internal predecessors, (85907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:50:04,118 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 578 predicate places. [2023-11-29 23:50:04,118 INFO L500 AbstractCegarLoop]: Abstraction has has 821 places, 12030 transitions, 174874 flow [2023-11-29 23:50:04,119 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 63.08) internal successors, (3154), 50 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:50:04,119 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:50:04,119 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:50:04,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 23:50:04,324 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:50:04,325 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:50:04,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:50:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1540883838, now seen corresponding path program 3 times [2023-11-29 23:50:04,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:50:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881441765] [2023-11-29 23:50:04,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:50:04,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:50:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:50:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:50:04,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:50:04,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881441765] [2023-11-29 23:50:04,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881441765] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:50:04,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136883867] [2023-11-29 23:50:04,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:50:04,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:50:04,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:50:04,988 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) [2023-11-29 23:50:04,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 23:50:05,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 23:50:05,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:50:05,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 23:50:05,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:50:05,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 23:50:05,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 23:50:05,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:50:05,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 23:50:05,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:50:06,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:50:06,033 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:50:07,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:50:07,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 41 [2023-11-29 23:50:07,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:50:07,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 162 [2023-11-29 23:50:07,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2023-11-29 23:50:07,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:50:07,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-29 23:50:07,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:50:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136883867] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:50:07,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:50:07,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 27, 27] total 55 [2023-11-29 23:50:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572992512] [2023-11-29 23:50:07,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:50:07,751 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-11-29 23:50:07,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:50:07,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-11-29 23:50:07,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2766, Unknown=22, NotChecked=0, Total=2970 [2023-11-29 23:50:07,755 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 271 [2023-11-29 23:50:07,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 12030 transitions, 174874 flow. Second operand has 55 states, 55 states have (on average 62.61818181818182) internal successors, (3444), 55 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:50:07,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:50:07,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 271 [2023-11-29 23:50:07,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:53:33,294 INFO L124 PetriNetUnfolderBase]: 79274/161185 cut-off events. [2023-11-29 23:53:33,294 INFO L125 PetriNetUnfolderBase]: For 1232359/1244831 co-relation queries the response was YES. [2023-11-29 23:53:34,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973449 conditions, 161185 events. 79274/161185 cut-off events. For 1232359/1244831 co-relation queries the response was YES. Maximal size of possible extension queue 2673. Compared 1830046 event pairs, 2838 based on Foata normal form. 1802/151465 useless extension candidates. Maximal degree in co-relation 658920. Up to 53351 conditions per place. [2023-11-29 23:53:34,996 INFO L140 encePairwiseOnDemand]: 159/271 looper letters, 10409 selfloop transitions, 3900 changer transitions 3475/17838 dead transitions. [2023-11-29 23:53:34,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1190 places, 17838 transitions, 281489 flow [2023-11-29 23:53:34,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 370 states. [2023-11-29 23:53:34,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2023-11-29 23:53:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 26039 transitions. [2023-11-29 23:53:35,044 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.25968884013164456 [2023-11-29 23:53:35,044 INFO L72 ComplementDD]: Start complementDD. Operand 370 states and 26039 transitions. [2023-11-29 23:53:35,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 370 states and 26039 transitions. [2023-11-29 23:53:35,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:53:35,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 370 states and 26039 transitions. [2023-11-29 23:53:35,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 371 states, 370 states have (on average 70.37567567567568) internal successors, (26039), 370 states have internal predecessors, (26039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:53:35,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 371 states, 371 states have (on average 271.0) internal successors, (100541), 371 states have internal predecessors, (100541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:53:35,146 INFO L81 ComplementDD]: Finished complementDD. Result has 371 states, 371 states have (on average 271.0) internal successors, (100541), 371 states have internal predecessors, (100541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:53:35,148 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 947 predicate places. [2023-11-29 23:53:35,148 INFO L500 AbstractCegarLoop]: Abstraction has has 1190 places, 17838 transitions, 281489 flow [2023-11-29 23:53:35,148 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 62.61818181818182) internal successors, (3444), 55 states have internal predecessors, (3444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:53:35,148 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:53:35,149 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:53:35,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 23:53:35,355 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 23:53:35,356 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:53:35,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:53:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2112420458, now seen corresponding path program 4 times [2023-11-29 23:53:35,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:53:35,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609042457] [2023-11-29 23:53:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:53:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:53:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:53:35,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:53:35,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:53:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609042457] [2023-11-29 23:53:35,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609042457] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:53:35,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641492713] [2023-11-29 23:53:35,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 23:53:35,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:53:35,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:53:35,612 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) [2023-11-29 23:53:35,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 23:53:35,730 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 23:53:35,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:53:35,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-29 23:53:35,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:53:36,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:53:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:53:36,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:53:36,485 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:53:36,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 23:53:36,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:53:36,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641492713] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:53:36,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:53:36,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 18] total 36 [2023-11-29 23:53:36,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317223177] [2023-11-29 23:53:36,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:53:36,980 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 23:53:36,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:53:36,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 23:53:36,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 23:53:36,984 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 271 [2023-11-29 23:53:36,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1190 places, 17838 transitions, 281489 flow. Second operand has 36 states, 36 states have (on average 79.52777777777777) internal successors, (2863), 36 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:53:36,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:53:36,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 271 [2023-11-29 23:53:36,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:59:41,863 INFO L124 PetriNetUnfolderBase]: 99570/201511 cut-off events. [2023-11-29 23:59:41,863 INFO L125 PetriNetUnfolderBase]: For 1616566/1634595 co-relation queries the response was YES. [2023-11-29 23:59:42,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1378297 conditions, 201511 events. 99570/201511 cut-off events. For 1616566/1634595 co-relation queries the response was YES. Maximal size of possible extension queue 3506. Compared 2336385 event pairs, 2083 based on Foata normal form. 2038/188743 useless extension candidates. Maximal degree in co-relation 954545. Up to 72502 conditions per place. [2023-11-29 23:59:44,073 INFO L140 encePairwiseOnDemand]: 168/271 looper letters, 17435 selfloop transitions, 3584 changer transitions 5434/26520 dead transitions. [2023-11-29 23:59:44,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1471 places, 26520 transitions, 445160 flow [2023-11-29 23:59:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 282 states. [2023-11-29 23:59:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2023-11-29 23:59:44,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 24269 transitions. [2023-11-29 23:59:44,089 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.3175656224647353 [2023-11-29 23:59:44,090 INFO L72 ComplementDD]: Start complementDD. Operand 282 states and 24269 transitions. [2023-11-29 23:59:44,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 282 states and 24269 transitions. [2023-11-29 23:59:44,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:59:44,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 282 states and 24269 transitions. [2023-11-29 23:59:44,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 283 states, 282 states have (on average 86.06028368794327) internal successors, (24269), 282 states have internal predecessors, (24269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:59:44,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 283 states, 283 states have (on average 271.0) internal successors, (76693), 283 states have internal predecessors, (76693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:59:44,161 INFO L81 ComplementDD]: Finished complementDD. Result has 283 states, 283 states have (on average 271.0) internal successors, (76693), 283 states have internal predecessors, (76693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:59:44,161 INFO L307 CegarLoopForPetriNet]: 243 programPoint places, 1228 predicate places. [2023-11-29 23:59:44,161 INFO L500 AbstractCegarLoop]: Abstraction has has 1471 places, 26520 transitions, 445160 flow [2023-11-29 23:59:44,162 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 79.52777777777777) internal successors, (2863), 36 states have internal predecessors, (2863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:59:44,162 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:59:44,162 INFO L232 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:59:44,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 23:59:44,367 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,SelfDestructingSolverStorable15 [2023-11-29 23:59:44,367 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:59:44,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:59:44,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1284938086, now seen corresponding path program 5 times [2023-11-29 23:59:44,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:59:44,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018014163] [2023-11-29 23:59:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:59:44,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:59:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:59:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:59:44,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:59:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018014163] [2023-11-29 23:59:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018014163] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:59:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339050017] [2023-11-29 23:59:44,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 23:59:44,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:59:44,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:59:44,645 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) [2023-11-29 23:59:44,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 23:59:44,980 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:59:44,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:59:45,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 23:59:45,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:59:45,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:59:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:59:45,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:59:45,941 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:59:45,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 23:59:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:59:46,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339050017] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:59:46,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:59:46,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 23, 18] total 40 [2023-11-29 23:59:46,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892777307] [2023-11-29 23:59:46,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:59:46,527 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 23:59:46,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:59:46,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 23:59:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 23:59:46,530 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 271 [2023-11-29 23:59:46,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1471 places, 26520 transitions, 445160 flow. Second operand has 40 states, 40 states have (on average 71.275) internal successors, (2851), 40 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 23:59:46,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:59:46,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 271 [2023-11-29 23:59:46,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-30 00:01:30,745 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-30 00:01:30,745 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 [2023-11-30 00:01:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2023-11-30 00:01:30,862 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-30 00:01:30,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-30 00:01:31,067 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-30 00:01:31,068 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (40states, 64/271 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 321564 conditions, 41981 events (19767/41980 cut-off events. For 343317/351819 co-relation queries the response was YES. Maximal size of possible extension queue 2617. Compared 502089 event pairs, 158 based on Foata normal form. 775/41910 useless extension candidates. Maximal degree in co-relation 145467. Up to 13858 conditions per place.). [2023-11-30 00:01:31,072 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-30 00:01:31,072 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-30 00:01:31,073 INFO L457 BasicCegarLoop]: Path program histogram: [8, 5, 1, 1, 1, 1] [2023-11-30 00:01:31,076 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-30 00:01:31,076 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-30 00:01:31,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:01:31 BasicIcfg [2023-11-30 00:01:31,080 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-30 00:01:31,081 INFO L158 Benchmark]: Toolchain (without parser) took 804364.93ms. Allocated memory was 522.2MB in the beginning and 6.5GB in the end (delta: 6.0GB). Free memory was 472.6MB in the beginning and 2.0GB in the end (delta: -1.5GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-11-30 00:01:31,082 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 379.6MB. Free memory was 332.8MB in the beginning and 332.6MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-30 00:01:31,083 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.11ms. Allocated memory is still 522.2MB. Free memory was 472.3MB in the beginning and 460.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-30 00:01:31,083 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.31ms. Allocated memory is still 522.2MB. Free memory was 460.0MB in the beginning and 457.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 00:01:31,083 INFO L158 Benchmark]: Boogie Preprocessor took 23.00ms. Allocated memory is still 522.2MB. Free memory was 457.7MB in the beginning and 455.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-30 00:01:31,084 INFO L158 Benchmark]: RCFGBuilder took 441.57ms. Allocated memory is still 522.2MB. Free memory was 455.6MB in the beginning and 487.0MB in the end (delta: -31.5MB). Peak memory consumption was 26.3MB. Max. memory is 16.0GB. [2023-11-30 00:01:31,085 INFO L158 Benchmark]: TraceAbstraction took 803692.63ms. Allocated memory was 522.2MB in the beginning and 6.5GB in the end (delta: 6.0GB). Free memory was 486.3MB in the beginning and 2.0GB in the end (delta: -1.5GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-11-30 00:01:31,090 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 379.6MB. Free memory was 332.8MB in the beginning and 332.6MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 172.11ms. Allocated memory is still 522.2MB. Free memory was 472.3MB in the beginning and 460.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.31ms. Allocated memory is still 522.2MB. Free memory was 460.0MB in the beginning and 457.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.00ms. Allocated memory is still 522.2MB. Free memory was 457.7MB in the beginning and 455.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 441.57ms. Allocated memory is still 522.2MB. Free memory was 455.6MB in the beginning and 487.0MB in the end (delta: -31.5MB). Peak memory consumption was 26.3MB. Max. memory is 16.0GB. * TraceAbstraction took 803692.63ms. Allocated memory was 522.2MB in the beginning and 6.5GB in the end (delta: 6.0GB). Free memory was 486.3MB in the beginning and 2.0GB in the end (delta: -1.5GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (40states, 64/271 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 321564 conditions, 41981 events (19767/41980 cut-off events. For 343317/351819 co-relation queries the response was YES. Maximal size of possible extension queue 2617. Compared 502089 event pairs, 158 based on Foata normal form. 775/41910 useless extension candidates. Maximal degree in co-relation 145467. Up to 13858 conditions per place.). - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (40states, 64/271 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 321564 conditions, 41981 events (19767/41980 cut-off events. For 343317/351819 co-relation queries the response was YES. Maximal size of possible extension queue 2617. Compared 502089 event pairs, 158 based on Foata normal form. 775/41910 useless extension candidates. Maximal degree in co-relation 145467. Up to 13858 conditions per place.). - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (40states, 64/271 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 321564 conditions, 41981 events (19767/41980 cut-off events. For 343317/351819 co-relation queries the response was YES. Maximal size of possible extension queue 2617. Compared 502089 event pairs, 158 based on Foata normal form. 775/41910 useless extension candidates. Maximal degree in co-relation 145467. Up to 13858 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 396 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: 803.6s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 784.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 27 mSolverCounterUnknown, 31147 SdHoareTripleChecker+Valid, 27.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31147 mSDsluCounter, 63154 SdHoareTripleChecker+Invalid, 23.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3474 IncrementalHoareTripleChecker+Unchecked, 60032 mSDsCounter, 1750 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51129 IncrementalHoareTripleChecker+Invalid, 56380 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1750 mSolverCounterUnsat, 3122 mSDtfsCounter, 51129 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3574 GetRequests, 1974 SyntacticMatches, 2 SemanticMatches, 1598 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 201252 ImplicationChecksByTransitivity, 50.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=445160occurred in iteration=16, InterpolantAutomatonStates: 1244, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 15.8s InterpolantComputationTime, 3177 NumberOfCodeBlocks, 3162 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 3909 ConstructedInterpolants, 220 QuantifiedInterpolants, 28409 SizeOfPredicates, 153 NumberOfNonLiveVariables, 1799 ConjunctsInSsa, 216 ConjunctsInUnsatCore, 28 InterpolantComputations, 12 PerfectInterpolantSequences, 6/32 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