/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:21:21,563 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:21:21,622 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 [2023-11-10 12:21:21,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:21:21,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:21:21,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:21:21,648 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:21:21,648 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:21:21,649 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:21:21,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:21:21,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:21:21,650 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:21:21,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:21:21,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:21:21,653 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:21:21,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:21:21,654 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:21:21,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:21:21,654 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:21:21,654 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:21:21,654 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:21:21,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:21:21,655 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:21:21,655 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:21:21,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:21:21,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:21:21,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:21:21,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:21:21,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:21:21,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:21:21,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:21:21,657 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:21:21,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:21:21,657 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:21:21,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:21:21,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:21:21,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:21:21,839 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:21:21,839 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:21:21,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2023-11-10 12:21:22,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:21:22,902 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:21:22,902 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2-unrolled.wvr.c [2023-11-10 12:21:22,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34242dfe/1fbe21d5c5ce43978128acabfefb0a6f/FLAGd230c5d30 [2023-11-10 12:21:22,919 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34242dfe/1fbe21d5c5ce43978128acabfefb0a6f [2023-11-10 12:21:22,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:21:22,925 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:21:22,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:21:22,927 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:21:22,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:21:22,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:21:22" (1/1) ... [2023-11-10 12:21:22,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2881494e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:22, skipping insertion in model container [2023-11-10 12:21:22,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:21:22" (1/1) ... [2023-11-10 12:21:22,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:21:23,067 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/parallel-misc-2-unrolled.wvr.c[2332,2345] [2023-11-10 12:21:23,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:21:23,079 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:21:23,096 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/parallel-misc-2-unrolled.wvr.c[2332,2345] [2023-11-10 12:21:23,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:21:23,102 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:21:23,102 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:21:23,107 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:21:23,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23 WrapperNode [2023-11-10 12:21:23,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:21:23,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:21:23,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:21:23,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:21:23,113 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,136 INFO L138 Inliner]: procedures = 20, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2023-11-10 12:21:23,136 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:21:23,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:21:23,137 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:21:23,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:21:23,145 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,152 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,154 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:21:23,155 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:21:23,155 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:21:23,155 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:21:23,155 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (1/1) ... [2023-11-10 12:21:23,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:21:23,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:23,183 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) [2023-11-10 12:21:23,185 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 [2023-11-10 12:21:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:21:23,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-10 12:21:23,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-10 12:21:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-10 12:21:23,207 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-10 12:21:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:21:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:21:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:21:23,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 12:21:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 12:21:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:21:23,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:21:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:21:23,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:21:23,209 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 12:21:23,270 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:21:23,272 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:21:23,472 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:21:23,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:21:23,488 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-10 12:21:23,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:21:23 BoogieIcfgContainer [2023-11-10 12:21:23,491 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:21:23,492 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:21:23,492 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:21:23,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:21:23,498 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:21:22" (1/3) ... [2023-11-10 12:21:23,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe71cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:21:23, skipping insertion in model container [2023-11-10 12:21:23,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:21:23" (2/3) ... [2023-11-10 12:21:23,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe71cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:21:23, skipping insertion in model container [2023-11-10 12:21:23,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:21:23" (3/3) ... [2023-11-10 12:21:23,500 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2-unrolled.wvr.c [2023-11-10 12:21:23,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:21:23,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:21:23,511 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:21:23,550 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-10 12:21:23,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 98 transitions, 210 flow [2023-11-10 12:21:23,610 INFO L124 PetriNetUnfolderBase]: 6/96 cut-off events. [2023-11-10 12:21:23,610 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 12:21:23,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 6/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-10 12:21:23,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 98 transitions, 210 flow [2023-11-10 12:21:23,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 87 transitions, 186 flow [2023-11-10 12:21:23,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:21:23,642 INFO L357 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=false, 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;@50de386f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:21:23,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-10 12:21:23,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:21:23,668 INFO L124 PetriNetUnfolderBase]: 6/86 cut-off events. [2023-11-10 12:21:23,668 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 12:21:23,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:23,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:23,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:21:23,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:23,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1705673714, now seen corresponding path program 1 times [2023-11-10 12:21:23,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:23,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052426659] [2023-11-10 12:21:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:23,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:24,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:24,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:24,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052426659] [2023-11-10 12:21:24,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052426659] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:21:24,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:21:24,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 12:21:24,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603871600] [2023-11-10 12:21:24,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:21:24,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 12:21:24,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:24,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 12:21:24,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-10 12:21:24,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2023-11-10 12:21:24,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:24,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:24,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2023-11-10 12:21:24,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:24,450 INFO L124 PetriNetUnfolderBase]: 19/147 cut-off events. [2023-11-10 12:21:24,450 INFO L125 PetriNetUnfolderBase]: For 29/31 co-relation queries the response was YES. [2023-11-10 12:21:24,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 147 events. 19/147 cut-off events. For 29/31 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 338 event pairs, 2 based on Foata normal form. 16/154 useless extension candidates. Maximal degree in co-relation 103. Up to 37 conditions per place. [2023-11-10 12:21:24,455 INFO L140 encePairwiseOnDemand]: 82/98 looper letters, 19 selfloop transitions, 7 changer transitions 7/92 dead transitions. [2023-11-10 12:21:24,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 92 transitions, 271 flow [2023-11-10 12:21:24,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 12:21:24,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 12:21:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2023-11-10 12:21:24,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7505668934240363 [2023-11-10 12:21:24,471 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 662 transitions. [2023-11-10 12:21:24,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 662 transitions. [2023-11-10 12:21:24,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:24,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 662 transitions. [2023-11-10 12:21:24,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.55555555555556) internal successors, (662), 9 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:24,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:24,482 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 98.0) internal successors, (980), 10 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:24,484 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 186 flow. Second operand 9 states and 662 transitions. [2023-11-10 12:21:24,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 92 transitions, 271 flow [2023-11-10 12:21:24,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 92 transitions, 257 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 12:21:24,488 INFO L231 Difference]: Finished difference. Result has 95 places, 83 transitions, 199 flow [2023-11-10 12:21:24,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=199, PETRI_PLACES=95, PETRI_TRANSITIONS=83} [2023-11-10 12:21:24,497 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 7 predicate places. [2023-11-10 12:21:24,497 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 83 transitions, 199 flow [2023-11-10 12:21:24,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:24,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:24,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:24,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:21:24,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:21:24,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:24,501 INFO L85 PathProgramCache]: Analyzing trace with hash -560375739, now seen corresponding path program 1 times [2023-11-10 12:21:24,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:24,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478830440] [2023-11-10 12:21:24,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:24,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:24,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:24,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:24,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478830440] [2023-11-10 12:21:24,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478830440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:21:24,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:21:24,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:21:24,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580900059] [2023-11-10 12:21:24,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:21:24,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:21:24,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:24,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:21:24,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:21:24,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 98 [2023-11-10 12:21:24,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 83 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:24,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:24,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 98 [2023-11-10 12:21:24,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:24,983 INFO L124 PetriNetUnfolderBase]: 84/307 cut-off events. [2023-11-10 12:21:24,984 INFO L125 PetriNetUnfolderBase]: For 33/42 co-relation queries the response was YES. [2023-11-10 12:21:24,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 307 events. 84/307 cut-off events. For 33/42 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1248 event pairs, 18 based on Foata normal form. 0/264 useless extension candidates. Maximal degree in co-relation 533. Up to 94 conditions per place. [2023-11-10 12:21:24,989 INFO L140 encePairwiseOnDemand]: 89/98 looper letters, 44 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2023-11-10 12:21:24,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 104 transitions, 361 flow [2023-11-10 12:21:24,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 12:21:24,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 12:21:24,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 417 transitions. [2023-11-10 12:21:24,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2023-11-10 12:21:24,991 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 417 transitions. [2023-11-10 12:21:24,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 417 transitions. [2023-11-10 12:21:24,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:24,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 417 transitions. [2023-11-10 12:21:24,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.5) internal successors, (417), 6 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:24,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:24,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 98.0) internal successors, (686), 7 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:24,994 INFO L175 Difference]: Start difference. First operand has 95 places, 83 transitions, 199 flow. Second operand 6 states and 417 transitions. [2023-11-10 12:21:24,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 104 transitions, 361 flow [2023-11-10 12:21:24,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 104 transitions, 343 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-10 12:21:24,998 INFO L231 Difference]: Finished difference. Result has 91 places, 85 transitions, 220 flow [2023-11-10 12:21:24,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=220, PETRI_PLACES=91, PETRI_TRANSITIONS=85} [2023-11-10 12:21:24,999 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2023-11-10 12:21:24,999 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 85 transitions, 220 flow [2023-11-10 12:21:24,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.16666666666667) internal successors, (391), 6 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:24,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:24,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:25,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 12:21:25,000 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:21:25,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash -43376801, now seen corresponding path program 2 times [2023-11-10 12:21:25,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:25,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994223469] [2023-11-10 12:21:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:25,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:21:25,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:25,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994223469] [2023-11-10 12:21:25,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994223469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:21:25,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:21:25,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 12:21:25,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256016279] [2023-11-10 12:21:25,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:21:25,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:21:25,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:25,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:21:25,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:21:25,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2023-11-10 12:21:25,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 85 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:25,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2023-11-10 12:21:25,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:25,369 INFO L124 PetriNetUnfolderBase]: 24/185 cut-off events. [2023-11-10 12:21:25,369 INFO L125 PetriNetUnfolderBase]: For 36/40 co-relation queries the response was YES. [2023-11-10 12:21:25,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 185 events. 24/185 cut-off events. For 36/40 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 564 event pairs, 1 based on Foata normal form. 3/187 useless extension candidates. Maximal degree in co-relation 146. Up to 37 conditions per place. [2023-11-10 12:21:25,370 INFO L140 encePairwiseOnDemand]: 87/98 looper letters, 19 selfloop transitions, 11 changer transitions 4/95 dead transitions. [2023-11-10 12:21:25,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 319 flow [2023-11-10 12:21:25,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:21:25,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:21:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 585 transitions. [2023-11-10 12:21:25,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7461734693877551 [2023-11-10 12:21:25,372 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 585 transitions. [2023-11-10 12:21:25,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 585 transitions. [2023-11-10 12:21:25,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:25,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 585 transitions. [2023-11-10 12:21:25,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 73.125) internal successors, (585), 8 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,376 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 98.0) internal successors, (882), 9 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,376 INFO L175 Difference]: Start difference. First operand has 91 places, 85 transitions, 220 flow. Second operand 8 states and 585 transitions. [2023-11-10 12:21:25,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 319 flow [2023-11-10 12:21:25,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 95 transitions, 308 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 12:21:25,379 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 269 flow [2023-11-10 12:21:25,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=269, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2023-11-10 12:21:25,380 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2023-11-10 12:21:25,380 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 269 flow [2023-11-10 12:21:25,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:25,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:25,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 12:21:25,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:21:25,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:25,382 INFO L85 PathProgramCache]: Analyzing trace with hash 208268884, now seen corresponding path program 1 times [2023-11-10 12:21:25,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:25,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908155006] [2023-11-10 12:21:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:25,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:25,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:25,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908155006] [2023-11-10 12:21:25,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908155006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:21:25,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:21:25,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:21:25,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099038600] [2023-11-10 12:21:25,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:21:25,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:21:25,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:25,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:21:25,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:21:25,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 98 [2023-11-10 12:21:25,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:25,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 98 [2023-11-10 12:21:25,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:25,761 INFO L124 PetriNetUnfolderBase]: 140/484 cut-off events. [2023-11-10 12:21:25,761 INFO L125 PetriNetUnfolderBase]: For 219/224 co-relation queries the response was YES. [2023-11-10 12:21:25,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 484 events. 140/484 cut-off events. For 219/224 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2422 event pairs, 42 based on Foata normal form. 8/486 useless extension candidates. Maximal degree in co-relation 1000. Up to 150 conditions per place. [2023-11-10 12:21:25,764 INFO L140 encePairwiseOnDemand]: 87/98 looper letters, 59 selfloop transitions, 12 changer transitions 6/125 dead transitions. [2023-11-10 12:21:25,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 125 transitions, 544 flow [2023-11-10 12:21:25,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:21:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:21:25,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 456 transitions. [2023-11-10 12:21:25,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6647230320699709 [2023-11-10 12:21:25,765 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 456 transitions. [2023-11-10 12:21:25,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 456 transitions. [2023-11-10 12:21:25,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:25,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 456 transitions. [2023-11-10 12:21:25,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,768 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,768 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 269 flow. Second operand 7 states and 456 transitions. [2023-11-10 12:21:25,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 125 transitions, 544 flow [2023-11-10 12:21:25,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 125 transitions, 530 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-10 12:21:25,771 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 332 flow [2023-11-10 12:21:25,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2023-11-10 12:21:25,772 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 14 predicate places. [2023-11-10 12:21:25,772 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 332 flow [2023-11-10 12:21:25,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:25,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 12:21:25,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 12:21:25,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:21:25,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2026208440, now seen corresponding path program 2 times [2023-11-10 12:21:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:25,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482434927] [2023-11-10 12:21:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:25,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:25,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482434927] [2023-11-10 12:21:25,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482434927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:21:25,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:21:25,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:21:25,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169150255] [2023-11-10 12:21:25,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:21:25,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:21:25,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:25,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:21:25,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:21:25,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 98 [2023-11-10 12:21:25,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 332 flow. Second operand has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:25,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:25,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 98 [2023-11-10 12:21:25,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:26,067 INFO L124 PetriNetUnfolderBase]: 117/383 cut-off events. [2023-11-10 12:21:26,067 INFO L125 PetriNetUnfolderBase]: For 376/385 co-relation queries the response was YES. [2023-11-10 12:21:26,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 383 events. 117/383 cut-off events. For 376/385 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1586 event pairs, 32 based on Foata normal form. 3/381 useless extension candidates. Maximal degree in co-relation 722. Up to 185 conditions per place. [2023-11-10 12:21:26,070 INFO L140 encePairwiseOnDemand]: 85/98 looper letters, 51 selfloop transitions, 15 changer transitions 3/117 dead transitions. [2023-11-10 12:21:26,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 117 transitions, 574 flow [2023-11-10 12:21:26,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:21:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:21:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 445 transitions. [2023-11-10 12:21:26,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486880466472303 [2023-11-10 12:21:26,071 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 445 transitions. [2023-11-10 12:21:26,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 445 transitions. [2023-11-10 12:21:26,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:26,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 445 transitions. [2023-11-10 12:21:26,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.57142857142857) internal successors, (445), 7 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:26,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:26,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 98.0) internal successors, (784), 8 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:26,074 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 332 flow. Second operand 7 states and 445 transitions. [2023-11-10 12:21:26,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 117 transitions, 574 flow [2023-11-10 12:21:26,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 117 transitions, 552 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-10 12:21:26,078 INFO L231 Difference]: Finished difference. Result has 108 places, 99 transitions, 405 flow [2023-11-10 12:21:26,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=405, PETRI_PLACES=108, PETRI_TRANSITIONS=99} [2023-11-10 12:21:26,078 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 20 predicate places. [2023-11-10 12:21:26,078 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 99 transitions, 405 flow [2023-11-10 12:21:26,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 59.833333333333336) internal successors, (359), 6 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:26,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:26,079 INFO L208 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] [2023-11-10 12:21:26,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 12:21:26,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:21:26,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:26,080 INFO L85 PathProgramCache]: Analyzing trace with hash 990896349, now seen corresponding path program 1 times [2023-11-10 12:21:26,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:26,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625129849] [2023-11-10 12:21:26,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:26,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:26,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:26,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:26,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625129849] [2023-11-10 12:21:26,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625129849] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:26,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421482551] [2023-11-10 12:21:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:26,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:26,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:26,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:21:26,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-10 12:21:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:26,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-10 12:21:26,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:21:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:26,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:21:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:26,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421482551] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:21:26,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:21:26,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-11-10 12:21:26,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078749471] [2023-11-10 12:21:26,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:21:26,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:21:26,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:26,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:21:26,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:21:26,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2023-11-10 12:21:26,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 99 transitions, 405 flow. Second operand has 11 states, 11 states have (on average 71.36363636363636) internal successors, (785), 11 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:26,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:26,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2023-11-10 12:21:26,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:26,814 INFO L124 PetriNetUnfolderBase]: 42/292 cut-off events. [2023-11-10 12:21:26,814 INFO L125 PetriNetUnfolderBase]: For 360/373 co-relation queries the response was YES. [2023-11-10 12:21:26,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 292 events. 42/292 cut-off events. For 360/373 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1228 event pairs, 11 based on Foata normal form. 4/292 useless extension candidates. Maximal degree in co-relation 543. Up to 35 conditions per place. [2023-11-10 12:21:26,816 INFO L140 encePairwiseOnDemand]: 84/98 looper letters, 16 selfloop transitions, 19 changer transitions 6/112 dead transitions. [2023-11-10 12:21:26,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 112 transitions, 535 flow [2023-11-10 12:21:26,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:21:26,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:21:26,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 795 transitions. [2023-11-10 12:21:26,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7374768089053804 [2023-11-10 12:21:26,818 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 795 transitions. [2023-11-10 12:21:26,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 795 transitions. [2023-11-10 12:21:26,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:26,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 795 transitions. [2023-11-10 12:21:26,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.27272727272727) internal successors, (795), 11 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:26,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:26,821 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:26,822 INFO L175 Difference]: Start difference. First operand has 108 places, 99 transitions, 405 flow. Second operand 11 states and 795 transitions. [2023-11-10 12:21:26,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 112 transitions, 535 flow [2023-11-10 12:21:26,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 112 transitions, 527 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-10 12:21:26,825 INFO L231 Difference]: Finished difference. Result has 121 places, 105 transitions, 503 flow [2023-11-10 12:21:26,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=121, PETRI_TRANSITIONS=105} [2023-11-10 12:21:26,826 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 33 predicate places. [2023-11-10 12:21:26,826 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 105 transitions, 503 flow [2023-11-10 12:21:26,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.36363636363636) internal successors, (785), 11 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:26,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:26,826 INFO L208 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] [2023-11-10 12:21:26,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-10 12:21:27,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-10 12:21:27,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:21:27,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:27,038 INFO L85 PathProgramCache]: Analyzing trace with hash -95152347, now seen corresponding path program 2 times [2023-11-10 12:21:27,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:27,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238627905] [2023-11-10 12:21:27,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:27,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:21:27,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:27,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238627905] [2023-11-10 12:21:27,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238627905] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:27,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386348235] [2023-11-10 12:21:27,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:21:27,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:27,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:27,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:21:27,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-10 12:21:27,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:21:27,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:21:27,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-10 12:21:27,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:21:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:21:27,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:21:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:21:27,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386348235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:21:27,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:21:27,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-11-10 12:21:27,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385743407] [2023-11-10 12:21:27,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:21:27,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 12:21:27,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:27,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 12:21:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-10 12:21:27,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2023-11-10 12:21:27,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 105 transitions, 503 flow. Second operand has 11 states, 11 states have (on average 71.36363636363636) internal successors, (785), 11 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:27,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:27,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2023-11-10 12:21:27,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:27,722 INFO L124 PetriNetUnfolderBase]: 56/355 cut-off events. [2023-11-10 12:21:27,722 INFO L125 PetriNetUnfolderBase]: For 698/728 co-relation queries the response was YES. [2023-11-10 12:21:27,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 355 events. 56/355 cut-off events. For 698/728 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1723 event pairs, 8 based on Foata normal form. 15/368 useless extension candidates. Maximal degree in co-relation 902. Up to 63 conditions per place. [2023-11-10 12:21:27,725 INFO L140 encePairwiseOnDemand]: 84/98 looper letters, 23 selfloop transitions, 19 changer transitions 4/117 dead transitions. [2023-11-10 12:21:27,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 654 flow [2023-11-10 12:21:27,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 12:21:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 12:21:27,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 794 transitions. [2023-11-10 12:21:27,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7365491651205937 [2023-11-10 12:21:27,728 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 794 transitions. [2023-11-10 12:21:27,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 794 transitions. [2023-11-10 12:21:27,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:27,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 794 transitions. [2023-11-10 12:21:27,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.18181818181819) internal successors, (794), 11 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:27,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:27,732 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 98.0) internal successors, (1176), 12 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:27,732 INFO L175 Difference]: Start difference. First operand has 121 places, 105 transitions, 503 flow. Second operand 11 states and 794 transitions. [2023-11-10 12:21:27,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 654 flow [2023-11-10 12:21:27,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 117 transitions, 608 flow, removed 19 selfloop flow, removed 6 redundant places. [2023-11-10 12:21:27,736 INFO L231 Difference]: Finished difference. Result has 127 places, 111 transitions, 566 flow [2023-11-10 12:21:27,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=566, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2023-11-10 12:21:27,737 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 39 predicate places. [2023-11-10 12:21:27,737 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 566 flow [2023-11-10 12:21:27,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.36363636363636) internal successors, (785), 11 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:27,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:21:27,737 INFO L208 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] [2023-11-10 12:21:27,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-10 12:21:27,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-10 12:21:27,942 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:21:27,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:21:27,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1679100383, now seen corresponding path program 3 times [2023-11-10 12:21:27,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:21:27,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723485080] [2023-11-10 12:21:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:21:27,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:21:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:21:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:28,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:21:28,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723485080] [2023-11-10 12:21:28,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723485080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:21:28,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438445832] [2023-11-10 12:21:28,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:21:28,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:28,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:21:28,172 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:21:28,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-10 12:21:28,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-10 12:21:28,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:21:28,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-10 12:21:28,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:21:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:28,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:21:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:21:28,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438445832] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:21:28,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:21:28,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-11-10 12:21:28,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204222632] [2023-11-10 12:21:28,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:21:28,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 12:21:28,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:21:28,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 12:21:28,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-10 12:21:28,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 98 [2023-11-10 12:21:28,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 566 flow. Second operand has 12 states, 12 states have (on average 71.16666666666667) internal successors, (854), 12 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:28,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:21:28,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 98 [2023-11-10 12:21:28,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:21:28,642 INFO L124 PetriNetUnfolderBase]: 55/349 cut-off events. [2023-11-10 12:21:28,642 INFO L125 PetriNetUnfolderBase]: For 767/800 co-relation queries the response was YES. [2023-11-10 12:21:28,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 349 events. 55/349 cut-off events. For 767/800 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1735 event pairs, 7 based on Foata normal form. 25/372 useless extension candidates. Maximal degree in co-relation 914. Up to 37 conditions per place. [2023-11-10 12:21:28,645 INFO L140 encePairwiseOnDemand]: 84/98 looper letters, 0 selfloop transitions, 0 changer transitions 113/113 dead transitions. [2023-11-10 12:21:28,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 113 transitions, 672 flow [2023-11-10 12:21:28,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 12:21:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 12:21:28,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 854 transitions. [2023-11-10 12:21:28,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2023-11-10 12:21:28,646 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 854 transitions. [2023-11-10 12:21:28,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 854 transitions. [2023-11-10 12:21:28,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:21:28,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 854 transitions. [2023-11-10 12:21:28,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.16666666666667) internal successors, (854), 12 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:28,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 98.0) internal successors, (1274), 13 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:28,650 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 98.0) internal successors, (1274), 13 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:28,650 INFO L175 Difference]: Start difference. First operand has 127 places, 111 transitions, 566 flow. Second operand 12 states and 854 transitions. [2023-11-10 12:21:28,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 113 transitions, 672 flow [2023-11-10 12:21:28,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 113 transitions, 658 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-10 12:21:28,654 INFO L231 Difference]: Finished difference. Result has 127 places, 0 transitions, 0 flow [2023-11-10 12:21:28,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=127, PETRI_TRANSITIONS=0} [2023-11-10 12:21:28,680 INFO L281 CegarLoopForPetriNet]: 88 programPoint places, 39 predicate places. [2023-11-10 12:21:28,680 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 0 transitions, 0 flow [2023-11-10 12:21:28,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 71.16666666666667) internal successors, (854), 12 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:21:28,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-10 12:21:28,682 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-10 12:21:28,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-10 12:21:28,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-10 12:21:28,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:21:28,888 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1] [2023-11-10 12:21:28,891 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 12:21:28,891 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 12:21:28,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:21:28 BasicIcfg [2023-11-10 12:21:28,894 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 12:21:28,894 INFO L158 Benchmark]: Toolchain (without parser) took 5969.38ms. Allocated memory was 315.6MB in the beginning and 379.6MB in the end (delta: 64.0MB). Free memory was 266.1MB in the beginning and 339.7MB in the end (delta: -73.6MB). Peak memory consumption was 210.2MB. Max. memory is 8.0GB. [2023-11-10 12:21:28,894 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 184.5MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 12:21:28,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.16ms. Allocated memory is still 315.6MB. Free memory was 266.1MB in the beginning and 255.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-10 12:21:28,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.91ms. Allocated memory is still 315.6MB. Free memory was 255.0MB in the beginning and 253.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-10 12:21:28,895 INFO L158 Benchmark]: Boogie Preprocessor took 17.35ms. Allocated memory is still 315.6MB. Free memory was 253.2MB in the beginning and 252.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-10 12:21:28,895 INFO L158 Benchmark]: RCFGBuilder took 336.23ms. Allocated memory is still 315.6MB. Free memory was 252.2MB in the beginning and 237.8MB in the end (delta: 14.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-10 12:21:28,895 INFO L158 Benchmark]: TraceAbstraction took 5401.55ms. Allocated memory was 315.6MB in the beginning and 379.6MB in the end (delta: 64.0MB). Free memory was 237.1MB in the beginning and 339.7MB in the end (delta: -102.6MB). Peak memory consumption was 180.9MB. Max. memory is 8.0GB. [2023-11-10 12:21:28,896 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 184.5MB. Free memory is still 136.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.16ms. Allocated memory is still 315.6MB. Free memory was 266.1MB in the beginning and 255.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.91ms. Allocated memory is still 315.6MB. Free memory was 255.0MB in the beginning and 253.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.35ms. Allocated memory is still 315.6MB. Free memory was 253.2MB in the beginning and 252.2MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 336.23ms. Allocated memory is still 315.6MB. Free memory was 252.2MB in the beginning and 237.8MB in the end (delta: 14.4MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 5401.55ms. Allocated memory was 315.6MB in the beginning and 379.6MB in the end (delta: 64.0MB). Free memory was 237.1MB in the beginning and 339.7MB in the end (delta: -102.6MB). Peak memory consumption was 180.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: 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 5 procedures, 119 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 203 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 203 mSDsluCounter, 301 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 181 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 875 IncrementalHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 120 mSDtfsCounter, 875 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 575 GetRequests, 466 SyntacticMatches, 31 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=566occurred in iteration=7, InterpolantAutomatonStates: 71, 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, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 837 NumberOfCodeBlocks, 837 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1066 ConstructedInterpolants, 0 QuantifiedInterpolants, 5807 SizeOfPredicates, 27 NumberOfNonLiveVariables, 516 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 7/22 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! [2023-11-10 12:21:28,908 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...