/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:09:12,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:09:13,030 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:09:13,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:09:13,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:09:13,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:09:13,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:09:13,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:09:13,057 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:09:13,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:09:13,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:09:13,061 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:09:13,061 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:09:13,062 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:09:13,062 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:09:13,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:09:13,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:09:13,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:09:13,062 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:09:13,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:09:13,063 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:09:13,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:09:13,064 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:09:13,064 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:09:13,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:09:13,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:09:13,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:09:13,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:09:13,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:09:13,066 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:09:13,066 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:09:13,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:09:13,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:09:13,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:09:13,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:09:13,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:09:13,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:09:13,256 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:09:13,257 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:09:13,258 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2023-12-09 15:09:14,221 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:09:14,370 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:09:14,370 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2023-12-09 15:09:14,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc70f15ee/e8db6ecea85940319975be39d09242ae/FLAGeab72a264 [2023-12-09 15:09:14,392 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc70f15ee/e8db6ecea85940319975be39d09242ae [2023-12-09 15:09:14,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:09:14,395 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:09:14,397 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:09:14,398 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:09:14,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:09:14,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,402 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a409d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14, skipping insertion in model container [2023-12-09 15:09:14,402 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:09:14,571 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] [2023-12-09 15:09:14,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:09:14,586 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:09:14,602 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] [2023-12-09 15:09:14,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:09:14,609 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:09:14,609 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:09:14,614 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:09:14,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14 WrapperNode [2023-12-09 15:09:14,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:09:14,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:09:14,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:09:14,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:09:14,621 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,654 INFO L138 Inliner]: procedures = 23, calls = 46, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 367 [2023-12-09 15:09:14,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:09:14,655 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:09:14,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:09:14,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:09:14,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,677 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,680 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:09:14,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:09:14,687 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:09:14,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:09:14,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (1/1) ... [2023-12-09 15:09:14,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:09:14,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:09:14,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-09 15:09:14,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-09 15:09:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:09:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:09:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:09:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:09:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:09:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-09 15:09:14,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-09 15:09:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:09:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:09:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:09:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:09:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:09:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:09:14,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:09:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:09:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:09:14,744 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:09:14,879 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:09:14,880 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:09:15,327 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:09:15,626 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:09:15,627 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-09 15:09:15,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:09:15 BoogieIcfgContainer [2023-12-09 15:09:15,628 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:09:15,630 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:09:15,630 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:09:15,632 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:09:15,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:09:14" (1/3) ... [2023-12-09 15:09:15,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0ff2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:09:15, skipping insertion in model container [2023-12-09 15:09:15,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:09:14" (2/3) ... [2023-12-09 15:09:15,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0ff2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:09:15, skipping insertion in model container [2023-12-09 15:09:15,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:09:15" (3/3) ... [2023-12-09 15:09:15,634 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-subst.wvr.c [2023-12-09 15:09:15,648 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:09:15,649 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:09:15,649 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:09:15,728 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-09 15:09:15,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 144 transitions, 309 flow [2023-12-09 15:09:15,847 INFO L124 PetriNetUnfolderBase]: 2/141 cut-off events. [2023-12-09 15:09:15,847 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:09:15,853 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. [2023-12-09 15:09:15,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 144 transitions, 309 flow [2023-12-09 15:09:15,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 130 transitions, 278 flow [2023-12-09 15:09:15,871 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:09:15,877 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;@4993c1ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:09:15,877 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 15:09:15,924 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:09:15,925 INFO L124 PetriNetUnfolderBase]: 2/129 cut-off events. [2023-12-09 15:09:15,925 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:09:15,925 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:09:15,926 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:09:15,926 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)] === [2023-12-09 15:09:15,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:09:15,935 INFO L85 PathProgramCache]: Analyzing trace with hash 950120215, now seen corresponding path program 1 times [2023-12-09 15:09:15,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:09:15,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498040196] [2023-12-09 15:09:15,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:09:15,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:09:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:09:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:09:21,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:09:21,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498040196] [2023-12-09 15:09:21,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498040196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:09:21,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:09:21,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:09:21,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868237178] [2023-12-09 15:09:21,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:09:21,687 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:09:21,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:09:21,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:09:21,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:09:21,708 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-12-09 15:09:21,711 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) [2023-12-09 15:09:21,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:09:21,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-12-09 15:09:21,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:09:22,834 INFO L124 PetriNetUnfolderBase]: 15/243 cut-off events. [2023-12-09 15:09:22,835 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-12-09 15:09:22,836 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. [2023-12-09 15:09:22,838 INFO L140 encePairwiseOnDemand]: 131/144 looper letters, 65 selfloop transitions, 2 changer transitions 20/165 dead transitions. [2023-12-09 15:09:22,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 165 transitions, 549 flow [2023-12-09 15:09:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:09:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:09:22,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1277 transitions. [2023-12-09 15:09:22,854 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6821581196581197 [2023-12-09 15:09:22,855 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1277 transitions. [2023-12-09 15:09:22,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1277 transitions. [2023-12-09 15:09:22,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:09:22,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1277 transitions. [2023-12-09 15:09:22,864 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) [2023-12-09 15:09:22,870 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) [2023-12-09 15:09:22,871 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) [2023-12-09 15:09:22,875 INFO L308 CegarLoopForPetriNet]: 138 programPoint places, 12 predicate places. [2023-12-09 15:09:22,875 INFO L500 AbstractCegarLoop]: Abstraction has has 150 places, 165 transitions, 549 flow [2023-12-09 15:09:22,876 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) [2023-12-09 15:09:22,876 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:09:22,877 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:09:22,877 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:09:22,877 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)] === [2023-12-09 15:09:22,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:09:22,878 INFO L85 PathProgramCache]: Analyzing trace with hash 412851061, now seen corresponding path program 2 times [2023-12-09 15:09:22,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:09:22,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059827923] [2023-12-09 15:09:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:09:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:09:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:09:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:09:26,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:09:26,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059827923] [2023-12-09 15:09:26,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059827923] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:09:26,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:09:26,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:09:26,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326279058] [2023-12-09 15:09:26,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:09:26,040 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:09:26,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:09:26,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:09:26,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:09:26,042 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-12-09 15:09:26,043 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) [2023-12-09 15:09:26,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:09:26,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-12-09 15:09:26,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:09:26,751 INFO L124 PetriNetUnfolderBase]: 14/260 cut-off events. [2023-12-09 15:09:26,751 INFO L125 PetriNetUnfolderBase]: For 137/161 co-relation queries the response was YES. [2023-12-09 15:09:26,752 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. [2023-12-09 15:09:26,753 INFO L140 encePairwiseOnDemand]: 133/144 looper letters, 68 selfloop transitions, 3 changer transitions 36/185 dead transitions. [2023-12-09 15:09:26,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 185 transitions, 861 flow [2023-12-09 15:09:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:09:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:09:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1271 transitions. [2023-12-09 15:09:26,756 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6789529914529915 [2023-12-09 15:09:26,756 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1271 transitions. [2023-12-09 15:09:26,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1271 transitions. [2023-12-09 15:09:26,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:09:26,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1271 transitions. [2023-12-09 15:09:26,759 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) [2023-12-09 15:09:26,761 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) [2023-12-09 15:09:26,762 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) [2023-12-09 15:09:26,763 INFO L308 CegarLoopForPetriNet]: 138 programPoint places, 24 predicate places. [2023-12-09 15:09:26,763 INFO L500 AbstractCegarLoop]: Abstraction has has 162 places, 185 transitions, 861 flow [2023-12-09 15:09:26,764 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) [2023-12-09 15:09:26,764 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:09:26,764 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:09:26,764 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:09:26,765 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)] === [2023-12-09 15:09:26,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:09:26,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1316127623, now seen corresponding path program 3 times [2023-12-09 15:09:26,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:09:26,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047002036] [2023-12-09 15:09:26,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:09:26,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:09:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:09:30,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:09:30,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:09:30,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047002036] [2023-12-09 15:09:30,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047002036] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:09:30,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:09:30,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:09:30,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942846439] [2023-12-09 15:09:30,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:09:30,059 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:09:30,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:09:30,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:09:30,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:09:30,066 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-12-09 15:09:30,072 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) [2023-12-09 15:09:30,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:09:30,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-12-09 15:09:30,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:09:31,388 INFO L124 PetriNetUnfolderBase]: 14/292 cut-off events. [2023-12-09 15:09:31,388 INFO L125 PetriNetUnfolderBase]: For 315/376 co-relation queries the response was YES. [2023-12-09 15:09:31,389 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. [2023-12-09 15:09:31,390 INFO L140 encePairwiseOnDemand]: 133/144 looper letters, 69 selfloop transitions, 4 changer transitions 59/210 dead transitions. [2023-12-09 15:09:31,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 210 transitions, 1302 flow [2023-12-09 15:09:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:09:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:09:31,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1270 transitions. [2023-12-09 15:09:31,395 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6784188034188035 [2023-12-09 15:09:31,396 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1270 transitions. [2023-12-09 15:09:31,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1270 transitions. [2023-12-09 15:09:31,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:09:31,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1270 transitions. [2023-12-09 15:09:31,402 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) [2023-12-09 15:09:31,404 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) [2023-12-09 15:09:31,404 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) [2023-12-09 15:09:31,405 INFO L308 CegarLoopForPetriNet]: 138 programPoint places, 36 predicate places. [2023-12-09 15:09:31,405 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 210 transitions, 1302 flow [2023-12-09 15:09:31,406 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) [2023-12-09 15:09:31,406 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:09:31,406 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:09:31,406 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:09:31,406 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)] === [2023-12-09 15:09:31,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:09:31,406 INFO L85 PathProgramCache]: Analyzing trace with hash 242638215, now seen corresponding path program 4 times [2023-12-09 15:09:31,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:09:31,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292215812] [2023-12-09 15:09:31,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:09:31,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:09:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:09:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:09:34,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:09:34,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292215812] [2023-12-09 15:09:34,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292215812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:09:34,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:09:34,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:09:34,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909271204] [2023-12-09 15:09:34,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:09:34,368 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:09:34,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:09:34,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:09:34,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:09:34,372 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-12-09 15:09:34,373 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) [2023-12-09 15:09:34,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:09:34,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-12-09 15:09:34,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:09:35,257 INFO L124 PetriNetUnfolderBase]: 14/288 cut-off events. [2023-12-09 15:09:35,257 INFO L125 PetriNetUnfolderBase]: For 531/696 co-relation queries the response was YES. [2023-12-09 15:09:35,258 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. [2023-12-09 15:09:35,259 INFO L140 encePairwiseOnDemand]: 133/144 looper letters, 50 selfloop transitions, 1 changer transitions 78/207 dead transitions. [2023-12-09 15:09:35,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 207 transitions, 1536 flow [2023-12-09 15:09:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:09:35,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:09:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1267 transitions. [2023-12-09 15:09:35,262 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6768162393162394 [2023-12-09 15:09:35,262 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1267 transitions. [2023-12-09 15:09:35,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1267 transitions. [2023-12-09 15:09:35,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:09:35,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1267 transitions. [2023-12-09 15:09:35,265 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) [2023-12-09 15:09:35,269 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) [2023-12-09 15:09:35,270 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) [2023-12-09 15:09:35,272 INFO L308 CegarLoopForPetriNet]: 138 programPoint places, 48 predicate places. [2023-12-09 15:09:35,272 INFO L500 AbstractCegarLoop]: Abstraction has has 186 places, 207 transitions, 1536 flow [2023-12-09 15:09:35,272 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) [2023-12-09 15:09:35,272 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:09:35,273 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:09:35,273 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:09:35,273 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)] === [2023-12-09 15:09:35,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:09:35,273 INFO L85 PathProgramCache]: Analyzing trace with hash 963400595, now seen corresponding path program 5 times [2023-12-09 15:09:35,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:09:35,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754311287] [2023-12-09 15:09:35,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:09:35,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:09:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:09:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:09:38,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:09:38,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754311287] [2023-12-09 15:09:38,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754311287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:09:38,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:09:38,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:09:38,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812885186] [2023-12-09 15:09:38,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:09:38,241 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:09:38,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:09:38,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:09:38,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:09:38,242 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-12-09 15:09:38,243 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) [2023-12-09 15:09:38,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:09:38,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-12-09 15:09:38,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:09:39,656 INFO L124 PetriNetUnfolderBase]: 13/318 cut-off events. [2023-12-09 15:09:39,656 INFO L125 PetriNetUnfolderBase]: For 881/957 co-relation queries the response was YES. [2023-12-09 15:09:39,657 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. [2023-12-09 15:09:39,658 INFO L140 encePairwiseOnDemand]: 133/144 looper letters, 47 selfloop transitions, 1 changer transitions 96/222 dead transitions. [2023-12-09 15:09:39,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 222 transitions, 1983 flow [2023-12-09 15:09:39,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:09:39,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:09:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1267 transitions. [2023-12-09 15:09:39,662 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6768162393162394 [2023-12-09 15:09:39,662 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1267 transitions. [2023-12-09 15:09:39,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1267 transitions. [2023-12-09 15:09:39,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:09:39,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1267 transitions. [2023-12-09 15:09:39,665 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) [2023-12-09 15:09:39,667 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) [2023-12-09 15:09:39,668 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) [2023-12-09 15:09:39,668 INFO L308 CegarLoopForPetriNet]: 138 programPoint places, 60 predicate places. [2023-12-09 15:09:39,668 INFO L500 AbstractCegarLoop]: Abstraction has has 198 places, 222 transitions, 1983 flow [2023-12-09 15:09:39,669 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) [2023-12-09 15:09:39,669 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:09:39,669 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:09:39,669 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:09:39,669 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)] === [2023-12-09 15:09:39,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:09:39,669 INFO L85 PathProgramCache]: Analyzing trace with hash -571329419, now seen corresponding path program 6 times [2023-12-09 15:09:39,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:09:39,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446334279] [2023-12-09 15:09:39,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:09:39,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:09:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:09:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:09:41,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:09:41,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446334279] [2023-12-09 15:09:41,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446334279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:09:41,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:09:41,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-09 15:09:41,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099330414] [2023-12-09 15:09:41,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:09:41,877 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 15:09:41,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:09:41,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 15:09:41,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-12-09 15:09:41,879 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 144 [2023-12-09 15:09:41,879 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) [2023-12-09 15:09:41,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:09:41,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 144 [2023-12-09 15:09:41,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:09:42,891 INFO L124 PetriNetUnfolderBase]: 13/312 cut-off events. [2023-12-09 15:09:42,891 INFO L125 PetriNetUnfolderBase]: For 1125/1192 co-relation queries the response was YES. [2023-12-09 15:09:42,892 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. [2023-12-09 15:09:42,892 INFO L140 encePairwiseOnDemand]: 133/144 looper letters, 0 selfloop transitions, 0 changer transitions 218/218 dead transitions. [2023-12-09 15:09:42,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 218 transitions, 2227 flow [2023-12-09 15:09:42,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:09:42,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:09:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1264 transitions. [2023-12-09 15:09:42,897 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6752136752136753 [2023-12-09 15:09:42,897 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1264 transitions. [2023-12-09 15:09:42,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1264 transitions. [2023-12-09 15:09:42,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:09:42,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1264 transitions. [2023-12-09 15:09:42,899 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) [2023-12-09 15:09:42,902 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) [2023-12-09 15:09:42,902 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) [2023-12-09 15:09:42,904 INFO L308 CegarLoopForPetriNet]: 138 programPoint places, 68 predicate places. [2023-12-09 15:09:42,904 INFO L500 AbstractCegarLoop]: Abstraction has has 206 places, 218 transitions, 2227 flow [2023-12-09 15:09:42,904 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) [2023-12-09 15:09:42,914 INFO L161 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/chl-collitem-subst.wvr.c_BEv2_AllErrorsAtOnce [2023-12-09 15:09:43,027 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-12-09 15:09:43,027 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-12-09 15:09:43,027 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-12-09 15:09:43,028 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-12-09 15:09:43,028 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 15:09:43,029 INFO L457 BasicCegarLoop]: Path program histogram: [6] [2023-12-09 15:09:43,031 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:09:43,031 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:09:43,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:09:43 BasicIcfg [2023-12-09 15:09:43,037 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:09:43,039 INFO L158 Benchmark]: Toolchain (without parser) took 28641.64ms. Allocated memory was 324.0MB in the beginning and 1.2GB in the end (delta: 925.9MB). Free memory was 277.5MB in the beginning and 499.1MB in the end (delta: -221.6MB). Peak memory consumption was 702.9MB. Max. memory is 8.0GB. [2023-12-09 15:09:43,039 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 242.2MB. Free memory is still 190.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:09:43,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.42ms. Allocated memory is still 324.0MB. Free memory was 277.2MB in the beginning and 265.2MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:09:43,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.75ms. Allocated memory is still 324.0MB. Free memory was 264.9MB in the beginning and 261.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-09 15:09:43,040 INFO L158 Benchmark]: Boogie Preprocessor took 31.77ms. Allocated memory is still 324.0MB. Free memory was 261.8MB in the beginning and 259.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:09:43,040 INFO L158 Benchmark]: RCFGBuilder took 941.45ms. Allocated memory is still 324.0MB. Free memory was 259.7MB in the beginning and 189.7MB in the end (delta: 70.0MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. [2023-12-09 15:09:43,040 INFO L158 Benchmark]: TraceAbstraction took 27406.69ms. Allocated memory was 324.0MB in the beginning and 1.2GB in the end (delta: 925.9MB). Free memory was 188.6MB in the beginning and 499.1MB in the end (delta: -310.5MB). Peak memory consumption was 613.8MB. Max. memory is 8.0GB. [2023-12-09 15:09:43,042 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 242.2MB. Free memory is still 190.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 217.42ms. Allocated memory is still 324.0MB. Free memory was 277.2MB in the beginning and 265.2MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.75ms. Allocated memory is still 324.0MB. Free memory was 264.9MB in the beginning and 261.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.77ms. Allocated memory is still 324.0MB. Free memory was 261.8MB in the beginning and 259.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 941.45ms. Allocated memory is still 324.0MB. Free memory was 259.7MB in the beginning and 189.7MB in the end (delta: 70.0MB). Peak memory consumption was 71.3MB. Max. memory is 8.0GB. * TraceAbstraction took 27406.69ms. Allocated memory was 324.0MB in the beginning and 1.2GB in the end (delta: 925.9MB). Free memory was 188.6MB in the beginning and 499.1MB in the end (delta: -310.5MB). Peak memory consumption was 613.8MB. Max. memory is 8.0GB. * 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: 27.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 337 mSDsluCounter, 1495 SdHoareTripleChecker+Invalid, 1.0s 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, 5.8s 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, 19.5s 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! [2023-12-09 15:09:43,072 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...