/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/chl-collitem-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 20:34:44,911 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 20:34:44,962 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 20:34:44,993 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 20:34:44,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 20:34:44,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 20:34:44,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 20:34:44,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 20:34:44,995 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 20:34:44,998 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 20:34:44,998 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 20:34:44,998 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 20:34:44,998 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 20:34:45,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 20:34:45,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 20:34:45,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 20:34:45,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 20:34:45,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 20:34:45,002 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 20:34:45,002 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 20:34:45,002 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 20:34:45,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 20:34:45,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 20:34:45,003 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 20:34:45,003 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 20:34:45,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 20:34:45,004 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 20:34:45,004 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 20:34:45,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 20:34:45,005 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 20:34:45,005 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 20:34:45,005 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 20:34:45,005 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 20:34:45,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 20:34:45,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 20:34:45,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 20:34:45,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 20:34:45,197 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 20:34:45,198 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 20:34:45,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2023-11-29 20:34:46,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 20:34:46,295 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 20:34:46,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2023-11-29 20:34:46,300 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c780f00/e64a69996b69497bb509ec32b5482c2d/FLAGf7823a581 [2023-11-29 20:34:46,308 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c780f00/e64a69996b69497bb509ec32b5482c2d [2023-11-29 20:34:46,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 20:34:46,310 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 20:34:46,311 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 20:34:46,311 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 20:34:46,314 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 20:34:46,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,315 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5218d2ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46, skipping insertion in model container [2023-11-29 20:34:46,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 20:34:46,441 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/chl-collitem-subst.wvr.c[3583,3596] [2023-11-29 20:34:46,445 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 20:34:46,452 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 20:34:46,472 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/chl-collitem-subst.wvr.c[3583,3596] [2023-11-29 20:34:46,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 20:34:46,482 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 20:34:46,482 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 20:34:46,486 INFO L206 MainTranslator]: Completed translation [2023-11-29 20:34:46,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46 WrapperNode [2023-11-29 20:34:46,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 20:34:46,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 20:34:46,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 20:34:46,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 20:34:46,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,541 INFO L138 Inliner]: procedures = 23, calls = 46, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 367 [2023-11-29 20:34:46,542 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 20:34:46,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 20:34:46,542 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 20:34:46,543 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 20:34:46,550 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,584 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,589 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 20:34:46,590 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 20:34:46,590 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 20:34:46,590 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 20:34:46,591 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (1/1) ... [2023-11-29 20:34:46,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 20:34:46,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 20:34:46,627 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 20:34:46,648 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 20:34:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 20:34:46,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 20:34:46,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 20:34:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 20:34:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 20:34:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 20:34:46,656 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 20:34:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 20:34:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 20:34:46,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 20:34:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 20:34:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 20:34:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 20:34:46,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 20:34:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 20:34:46,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 20:34:46,659 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 20:34:46,772 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 20:34:46,774 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 20:34:47,147 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 20:34:47,432 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 20:34:47,433 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 20:34:47,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:34:47 BoogieIcfgContainer [2023-11-29 20:34:47,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 20:34:47,436 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 20:34:47,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 20:34:47,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 20:34:47,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:34:46" (1/3) ... [2023-11-29 20:34:47,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4095d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:34:47, skipping insertion in model container [2023-11-29 20:34:47,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:34:46" (2/3) ... [2023-11-29 20:34:47,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4095d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:34:47, skipping insertion in model container [2023-11-29 20:34:47,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:34:47" (3/3) ... [2023-11-29 20:34:47,440 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-subst.wvr.c [2023-11-29 20:34:47,452 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 20:34:47,452 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 20:34:47,452 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 20:34:47,527 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 20:34:47,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 144 transitions, 309 flow [2023-11-29 20:34:47,625 INFO L124 PetriNetUnfolderBase]: 2/141 cut-off events. [2023-11-29 20:34:47,626 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 20:34:47,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 141 events. 2/141 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 26 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2023-11-29 20:34:47,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 144 transitions, 309 flow [2023-11-29 20:34:47,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 130 transitions, 278 flow [2023-11-29 20:34:47,645 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 20:34:47,650 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;@5e75b482, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 20:34:47,651 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-29 20:34:47,701 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 20:34:47,701 INFO L124 PetriNetUnfolderBase]: 2/129 cut-off events. [2023-11-29 20:34:47,701 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 20:34:47,701 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:34:47,702 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] [2023-11-29 20:34:47,702 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 20:34:47,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:34:47,706 INFO L85 PathProgramCache]: Analyzing trace with hash 950120215, now seen corresponding path program 1 times [2023-11-29 20:34:47,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:34:47,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035471230] [2023-11-29 20:34:47,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:34:47,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:34:48,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:34:52,818 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 20:34:52,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:34:52,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035471230] [2023-11-29 20:34:52,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035471230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:34:52,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:34:52,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 20:34:52,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332320285] [2023-11-29 20:34:52,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:34:52,826 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 20:34:52,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:34:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 20:34:52,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 20:34:52,855 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-11-29 20:34:52,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 130 transitions, 278 flow. Second operand has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:34:52,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:34:52,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-11-29 20:34:52,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:34:53,924 INFO L124 PetriNetUnfolderBase]: 15/243 cut-off events. [2023-11-29 20:34:53,924 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-11-29 20:34:53,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393 conditions, 243 events. 15/243 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 553 event pairs, 6 based on Foata normal form. 6/239 useless extension candidates. Maximal degree in co-relation 148. Up to 42 conditions per place. [2023-11-29 20:34:53,927 INFO L140 encePairwiseOnDemand]: 131/144 looper letters, 65 selfloop transitions, 2 changer transitions 20/165 dead transitions. [2023-11-29 20:34:53,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 165 transitions, 549 flow [2023-11-29 20:34:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 20:34:53,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 20:34:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1277 transitions. [2023-11-29 20:34:53,942 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6821581196581197 [2023-11-29 20:34:53,943 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1277 transitions. [2023-11-29 20:34:53,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1277 transitions. [2023-11-29 20:34:53,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:34:53,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1277 transitions. [2023-11-29 20:34:53,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 98.23076923076923) internal successors, (1277), 13 states have internal predecessors, (1277), 0 states have call successors, (0), 0 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 20:34:53,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:34:53,958 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:34:53,960 INFO L307 CegarLoopForPetriNet]: 138 programPoint places, 12 predicate places. [2023-11-29 20:34:53,960 INFO L500 AbstractCegarLoop]: Abstraction has has 150 places, 165 transitions, 549 flow [2023-11-29 20:34:53,961 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:34:53,961 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:34:53,962 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] [2023-11-29 20:34:53,962 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 20:34:53,962 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 20:34:53,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:34:53,962 INFO L85 PathProgramCache]: Analyzing trace with hash 412851061, now seen corresponding path program 2 times [2023-11-29 20:34:53,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:34:53,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838341630] [2023-11-29 20:34:53,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:34:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:34:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:34:56,845 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 20:34:56,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:34:56,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838341630] [2023-11-29 20:34:56,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838341630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:34:56,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:34:56,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 20:34:56,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57609846] [2023-11-29 20:34:56,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:34:56,848 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 20:34:56,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:34:56,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 20:34:56,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 20:34:56,851 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-11-29 20:34:56,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 165 transitions, 549 flow. Second operand has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:34:56,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:34:56,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-11-29 20:34:56,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:34:57,672 INFO L124 PetriNetUnfolderBase]: 14/260 cut-off events. [2023-11-29 20:34:57,673 INFO L125 PetriNetUnfolderBase]: For 137/161 co-relation queries the response was YES. [2023-11-29 20:34:57,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 260 events. 14/260 cut-off events. For 137/161 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 686 event pairs, 0 based on Foata normal form. 4/258 useless extension candidates. Maximal degree in co-relation 183. Up to 46 conditions per place. [2023-11-29 20:34:57,675 INFO L140 encePairwiseOnDemand]: 133/144 looper letters, 68 selfloop transitions, 3 changer transitions 36/185 dead transitions. [2023-11-29 20:34:57,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 185 transitions, 861 flow [2023-11-29 20:34:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 20:34:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 20:34:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1271 transitions. [2023-11-29 20:34:57,678 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6789529914529915 [2023-11-29 20:34:57,678 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1271 transitions. [2023-11-29 20:34:57,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1271 transitions. [2023-11-29 20:34:57,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:34:57,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1271 transitions. [2023-11-29 20:34:57,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 97.76923076923077) internal successors, (1271), 13 states have internal predecessors, (1271), 0 states have call successors, (0), 0 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 20:34:57,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:34:57,685 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:34:57,686 INFO L307 CegarLoopForPetriNet]: 138 programPoint places, 24 predicate places. [2023-11-29 20:34:57,686 INFO L500 AbstractCegarLoop]: Abstraction has has 162 places, 185 transitions, 861 flow [2023-11-29 20:34:57,687 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:34:57,687 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:34:57,687 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] [2023-11-29 20:34:57,687 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 20:34:57,688 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 20:34:57,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:34:57,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1316127623, now seen corresponding path program 3 times [2023-11-29 20:34:57,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:34:57,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582822335] [2023-11-29 20:34:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:34:57,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:34:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:35:00,730 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 20:35:00,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:35:00,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582822335] [2023-11-29 20:35:00,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582822335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:35:00,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:35:00,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 20:35:00,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463918841] [2023-11-29 20:35:00,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:35:00,733 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 20:35:00,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:35:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 20:35:00,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 20:35:00,739 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-11-29 20:35:00,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 185 transitions, 861 flow. Second operand has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:35:00,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:35:00,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-11-29 20:35:00,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:35:02,125 INFO L124 PetriNetUnfolderBase]: 14/292 cut-off events. [2023-11-29 20:35:02,125 INFO L125 PetriNetUnfolderBase]: For 315/376 co-relation queries the response was YES. [2023-11-29 20:35:02,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772 conditions, 292 events. 14/292 cut-off events. For 315/376 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 901 event pairs, 0 based on Foata normal form. 4/289 useless extension candidates. Maximal degree in co-relation 245. Up to 57 conditions per place. [2023-11-29 20:35:02,127 INFO L140 encePairwiseOnDemand]: 133/144 looper letters, 69 selfloop transitions, 4 changer transitions 59/210 dead transitions. [2023-11-29 20:35:02,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 210 transitions, 1302 flow [2023-11-29 20:35:02,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 20:35:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 20:35:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1270 transitions. [2023-11-29 20:35:02,129 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6784188034188035 [2023-11-29 20:35:02,129 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1270 transitions. [2023-11-29 20:35:02,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1270 transitions. [2023-11-29 20:35:02,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:35:02,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1270 transitions. [2023-11-29 20:35:02,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 97.6923076923077) internal successors, (1270), 13 states have internal predecessors, (1270), 0 states have call successors, (0), 0 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 20:35:02,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:35:02,135 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:35:02,135 INFO L307 CegarLoopForPetriNet]: 138 programPoint places, 36 predicate places. [2023-11-29 20:35:02,136 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 210 transitions, 1302 flow [2023-11-29 20:35:02,136 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:35:02,136 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:35:02,136 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] [2023-11-29 20:35:02,136 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 20:35:02,136 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 20:35:02,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:35:02,137 INFO L85 PathProgramCache]: Analyzing trace with hash 242638215, now seen corresponding path program 4 times [2023-11-29 20:35:02,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:35:02,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197761547] [2023-11-29 20:35:02,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:35:02,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:35:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:35:05,057 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 20:35:05,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:35:05,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197761547] [2023-11-29 20:35:05,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197761547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:35:05,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:35:05,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 20:35:05,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955632956] [2023-11-29 20:35:05,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:35:05,061 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 20:35:05,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:35:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 20:35:05,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 20:35:05,063 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-11-29 20:35:05,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 210 transitions, 1302 flow. Second operand has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:35:05,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:35:05,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-11-29 20:35:05,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:35:06,352 INFO L124 PetriNetUnfolderBase]: 14/288 cut-off events. [2023-11-29 20:35:06,353 INFO L125 PetriNetUnfolderBase]: For 531/696 co-relation queries the response was YES. [2023-11-29 20:35:06,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 902 conditions, 288 events. 14/288 cut-off events. For 531/696 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 883 event pairs, 0 based on Foata normal form. 13/295 useless extension candidates. Maximal degree in co-relation 284. Up to 54 conditions per place. [2023-11-29 20:35:06,354 INFO L140 encePairwiseOnDemand]: 133/144 looper letters, 50 selfloop transitions, 1 changer transitions 78/207 dead transitions. [2023-11-29 20:35:06,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 207 transitions, 1536 flow [2023-11-29 20:35:06,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 20:35:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 20:35:06,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1267 transitions. [2023-11-29 20:35:06,367 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6768162393162394 [2023-11-29 20:35:06,367 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1267 transitions. [2023-11-29 20:35:06,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1267 transitions. [2023-11-29 20:35:06,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:35:06,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1267 transitions. [2023-11-29 20:35:06,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 97.46153846153847) internal successors, (1267), 13 states have internal predecessors, (1267), 0 states have call successors, (0), 0 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 20:35:06,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:35:06,381 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:35:06,382 INFO L307 CegarLoopForPetriNet]: 138 programPoint places, 48 predicate places. [2023-11-29 20:35:06,382 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 207 transitions, 1536 flow [2023-11-29 20:35:06,383 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:35:06,383 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:35:06,383 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] [2023-11-29 20:35:06,383 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 20:35:06,383 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 20:35:06,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:35:06,384 INFO L85 PathProgramCache]: Analyzing trace with hash 963400595, now seen corresponding path program 5 times [2023-11-29 20:35:06,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:35:06,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807779215] [2023-11-29 20:35:06,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:35:06,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:35:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:35:10,769 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 20:35:10,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:35:10,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807779215] [2023-11-29 20:35:10,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807779215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:35:10,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:35:10,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 20:35:10,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072154333] [2023-11-29 20:35:10,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:35:10,771 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 20:35:10,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:35:10,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 20:35:10,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 20:35:10,772 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-11-29 20:35:10,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 207 transitions, 1536 flow. Second operand has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:35:10,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:35:10,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-11-29 20:35:10,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:35:12,682 INFO L124 PetriNetUnfolderBase]: 13/318 cut-off events. [2023-11-29 20:35:12,689 INFO L125 PetriNetUnfolderBase]: For 881/957 co-relation queries the response was YES. [2023-11-29 20:35:12,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1153 conditions, 318 events. 13/318 cut-off events. For 881/957 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1123 event pairs, 0 based on Foata normal form. 14/325 useless extension candidates. Maximal degree in co-relation 292. Up to 62 conditions per place. [2023-11-29 20:35:12,691 INFO L140 encePairwiseOnDemand]: 133/144 looper letters, 47 selfloop transitions, 1 changer transitions 96/222 dead transitions. [2023-11-29 20:35:12,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 222 transitions, 1983 flow [2023-11-29 20:35:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 20:35:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 20:35:12,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1267 transitions. [2023-11-29 20:35:12,702 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6768162393162394 [2023-11-29 20:35:12,702 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1267 transitions. [2023-11-29 20:35:12,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1267 transitions. [2023-11-29 20:35:12,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:35:12,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1267 transitions. [2023-11-29 20:35:12,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 97.46153846153847) internal successors, (1267), 13 states have internal predecessors, (1267), 0 states have call successors, (0), 0 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 20:35:12,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:35:12,707 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:35:12,708 INFO L307 CegarLoopForPetriNet]: 138 programPoint places, 60 predicate places. [2023-11-29 20:35:12,708 INFO L500 AbstractCegarLoop]: Abstraction has has 198 places, 222 transitions, 1983 flow [2023-11-29 20:35:12,708 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:35:12,708 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 20:35:12,708 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] [2023-11-29 20:35:12,708 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 20:35:12,708 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-29 20:35:12,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 20:35:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash -571329419, now seen corresponding path program 6 times [2023-11-29 20:35:12,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 20:35:12,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75733103] [2023-11-29 20:35:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 20:35:12,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 20:35:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 20:35:15,199 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 20:35:15,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 20:35:15,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75733103] [2023-11-29 20:35:15,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75733103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 20:35:15,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 20:35:15,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 20:35:15,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526735557] [2023-11-29 20:35:15,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 20:35:15,200 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 20:35:15,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 20:35:15,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 20:35:15,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-29 20:35:15,201 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-11-29 20:35:15,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 222 transitions, 1983 flow. Second operand has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:35:15,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 20:35:15,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-11-29 20:35:15,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 20:35:16,183 INFO L124 PetriNetUnfolderBase]: 13/312 cut-off events. [2023-11-29 20:35:16,183 INFO L125 PetriNetUnfolderBase]: For 1125/1192 co-relation queries the response was YES. [2023-11-29 20:35:16,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 312 events. 13/312 cut-off events. For 1125/1192 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1123 event pairs, 0 based on Foata normal form. 6/312 useless extension candidates. Maximal degree in co-relation 327. Up to 59 conditions per place. [2023-11-29 20:35:16,184 INFO L140 encePairwiseOnDemand]: 133/144 looper letters, 0 selfloop transitions, 0 changer transitions 218/218 dead transitions. [2023-11-29 20:35:16,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 218 transitions, 2227 flow [2023-11-29 20:35:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 20:35:16,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 20:35:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1264 transitions. [2023-11-29 20:35:16,187 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6752136752136753 [2023-11-29 20:35:16,187 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1264 transitions. [2023-11-29 20:35:16,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1264 transitions. [2023-11-29 20:35:16,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 20:35:16,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1264 transitions. [2023-11-29 20:35:16,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 97.23076923076923) internal successors, (1264), 13 states have internal predecessors, (1264), 0 states have call successors, (0), 0 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 20:35:16,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:35:16,192 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 144.0) internal successors, (2016), 14 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 20:35:16,193 INFO L307 CegarLoopForPetriNet]: 138 programPoint places, 68 predicate places. [2023-11-29 20:35:16,193 INFO L500 AbstractCegarLoop]: Abstraction has has 206 places, 218 transitions, 2227 flow [2023-11-29 20:35:16,193 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 95.8) internal successors, (958), 10 states have internal predecessors, (958), 0 states have call successors, (0), 0 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 20:35:16,198 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/chl-collitem-subst.wvr.c_BEv2_AllErrorsAtOnce [2023-11-29 20:35:16,311 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-29 20:35:16,312 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-29 20:35:16,312 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-29 20:35:16,312 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-29 20:35:16,312 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 20:35:16,313 INFO L457 BasicCegarLoop]: Path program histogram: [6] [2023-11-29 20:35:16,315 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 20:35:16,315 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 20:35:16,319 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:35:16 BasicIcfg [2023-11-29 20:35:16,319 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 20:35:16,321 INFO L158 Benchmark]: Toolchain (without parser) took 30008.93ms. Allocated memory was 713.0MB in the beginning and 1.9GB in the end (delta: 1.2GB). Free memory was 665.5MB in the beginning and 1.7GB in the end (delta: -1.0GB). Peak memory consumption was 211.3MB. Max. memory is 16.0GB. [2023-11-29 20:35:16,321 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 388.0MB. Free memory was 334.4MB in the beginning and 334.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 20:35:16,321 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.30ms. Allocated memory is still 713.0MB. Free memory was 665.5MB in the beginning and 653.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-29 20:35:16,321 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.17ms. Allocated memory is still 713.0MB. Free memory was 653.3MB in the beginning and 650.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-29 20:35:16,322 INFO L158 Benchmark]: Boogie Preprocessor took 47.07ms. Allocated memory is still 713.0MB. Free memory was 650.2MB in the beginning and 647.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 20:35:16,322 INFO L158 Benchmark]: RCFGBuilder took 843.88ms. Allocated memory is still 713.0MB. Free memory was 647.7MB in the beginning and 585.1MB in the end (delta: 62.6MB). Peak memory consumption was 63.3MB. Max. memory is 16.0GB. [2023-11-29 20:35:16,322 INFO L158 Benchmark]: TraceAbstraction took 28882.38ms. Allocated memory was 713.0MB in the beginning and 1.9GB in the end (delta: 1.2GB). Free memory was 584.0MB in the beginning and 1.7GB in the end (delta: -1.1GB). Peak memory consumption was 127.0MB. Max. memory is 16.0GB. [2023-11-29 20:35:16,323 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 388.0MB. Free memory was 334.4MB in the beginning and 334.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 176.30ms. Allocated memory is still 713.0MB. Free memory was 665.5MB in the beginning and 653.3MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.17ms. Allocated memory is still 713.0MB. Free memory was 653.3MB in the beginning and 650.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.07ms. Allocated memory is still 713.0MB. Free memory was 650.2MB in the beginning and 647.7MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 843.88ms. Allocated memory is still 713.0MB. Free memory was 647.7MB in the beginning and 585.1MB in the end (delta: 62.6MB). Peak memory consumption was 63.3MB. Max. memory is 16.0GB. * TraceAbstraction took 28882.38ms. Allocated memory was 713.0MB in the beginning and 1.9GB in the end (delta: 1.2GB). Free memory was 584.0MB in the beginning and 1.7GB in the end (delta: -1.1GB). Peak memory consumption was 127.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 161 locations, 4 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: 28.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 337 mSDsluCounter, 1495 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1202 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1390 IncrementalHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 293 mSDtfsCounter, 1390 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2227occurred in iteration=6, InterpolantAutomatonStates: 78, 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: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 20.0s InterpolantComputationTime, 756 NumberOfCodeBlocks, 756 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 750 ConstructedInterpolants, 0 QuantifiedInterpolants, 12498 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 20:35:16,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...