/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/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 11:47:35,220 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:47:35,287 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 11:47:35,305 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:47:35,306 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:47:35,306 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:47:35,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:47:35,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:47:35,307 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:47:35,308 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:47:35,308 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:47:35,308 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:47:35,309 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:47:35,309 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:47:35,309 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:47:35,310 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:47:35,310 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:47:35,310 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:47:35,310 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:47:35,311 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:47:35,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:47:35,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:47:35,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:47:35,312 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:47:35,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:47:35,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:47:35,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:47:35,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:47:35,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:47:35,314 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:47:35,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:47:35,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:47:35,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:47:35,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:47:35,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:47:35,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:47:35,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:47:35,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:47:35,511 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:47:35,512 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:47:36,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:47:36,952 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:47:36,953 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:47:36,964 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78272a7a0/43a1034e72be4fa6b9c698d4449db5bf/FLAGceb8e8c05 [2023-11-10 11:47:36,978 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78272a7a0/43a1034e72be4fa6b9c698d4449db5bf [2023-11-10 11:47:36,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:47:36,981 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:47:36,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:47:36,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:47:36,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:47:36,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:47:36" (1/1) ... [2023-11-10 11:47:36,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ceb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:36, skipping insertion in model container [2023-11-10 11:47:36,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:47:36" (1/1) ... [2023-11-10 11:47:37,040 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:47:37,199 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-10 11:47:37,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:47:37,386 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:47:37,398 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-11-10 11:47:37,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:47:37,466 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:47:37,466 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:47:37,472 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:47:37,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37 WrapperNode [2023-11-10 11:47:37,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:47:37,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:47:37,475 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:47:37,475 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:47:37,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,508 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,531 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-10 11:47:37,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:47:37,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:47:37,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:47:37,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:47:37,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,541 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,550 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,556 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,558 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:47:37,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:47:37,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:47:37,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:47:37,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (1/1) ... [2023-11-10 11:47:37,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:47:37,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:47:37,602 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 11:47:37,623 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 11:47:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:47:37,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 11:47:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:47:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:47:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:47:37,635 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-10 11:47:37,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-10 11:47:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-10 11:47:37,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-10 11:47:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-10 11:47:37,636 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-10 11:47:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:47:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 11:47:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:47:37,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:47:37,638 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 11:47:37,791 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:47:37,795 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:47:37,918 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:47:37,928 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:47:37,928 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 11:47:37,931 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:47:37 BoogieIcfgContainer [2023-11-10 11:47:37,932 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:47:37,934 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:47:37,934 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:47:37,937 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:47:37,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:47:36" (1/3) ... [2023-11-10 11:47:37,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2face443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:47:37, skipping insertion in model container [2023-11-10 11:47:37,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:47:37" (2/3) ... [2023-11-10 11:47:37,938 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2face443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:47:37, skipping insertion in model container [2023-11-10 11:47:37,938 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:47:37" (3/3) ... [2023-11-10 11:47:37,939 INFO L112 eAbstractionObserver]: Analyzing ICFG safe020_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-10 11:47:37,955 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:47:37,955 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 11:47:37,955 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:47:38,017 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:47:38,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 194 flow [2023-11-10 11:47:38,121 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-11-10 11:47:38,123 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:47:38,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-11-10 11:47:38,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 194 flow [2023-11-10 11:47:38,136 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2023-11-10 11:47:38,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:47:38,152 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;@5f51ad28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:47:38,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-10 11:47:38,191 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:47:38,192 INFO L124 PetriNetUnfolderBase]: 1/72 cut-off events. [2023-11-10 11:47:38,192 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:47:38,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:47:38,193 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] [2023-11-10 11:47:38,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 11:47:38,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:47:38,200 INFO L85 PathProgramCache]: Analyzing trace with hash 265354225, now seen corresponding path program 1 times [2023-11-10 11:47:38,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:47:38,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061634096] [2023-11-10 11:47:38,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:47:38,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:47:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:47:38,908 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 11:47:38,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:47:38,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061634096] [2023-11-10 11:47:38,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061634096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:47:38,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:47:38,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:47:38,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104602037] [2023-11-10 11:47:38,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:47:38,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:47:38,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:47:38,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:47:38,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:47:38,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 91 [2023-11-10 11:47:38,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 7 states, 7 states have (on average 70.71428571428571) internal successors, (495), 7 states have internal predecessors, (495), 0 states have call successors, (0), 0 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 11:47:38,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:47:38,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 91 [2023-11-10 11:47:38,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:47:39,362 INFO L124 PetriNetUnfolderBase]: 91/349 cut-off events. [2023-11-10 11:47:39,362 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-10 11:47:39,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 564 conditions, 349 events. 91/349 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1653 event pairs, 14 based on Foata normal form. 14/350 useless extension candidates. Maximal degree in co-relation 532. Up to 60 conditions per place. [2023-11-10 11:47:39,369 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 19 selfloop transitions, 5 changer transitions 35/115 dead transitions. [2023-11-10 11:47:39,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 115 transitions, 357 flow [2023-11-10 11:47:39,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:47:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:47:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 962 transitions. [2023-11-10 11:47:39,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8131868131868132 [2023-11-10 11:47:39,393 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 962 transitions. [2023-11-10 11:47:39,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 962 transitions. [2023-11-10 11:47:39,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:47:39,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 962 transitions. [2023-11-10 11:47:39,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 0 states have call successors, (0), 0 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 11:47:39,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 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 11:47:39,415 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 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 11:47:39,416 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 13 states and 962 transitions. [2023-11-10 11:47:39,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 115 transitions, 357 flow [2023-11-10 11:47:39,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 115 transitions, 354 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-10 11:47:39,427 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 207 flow [2023-11-10 11:47:39,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=207, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2023-11-10 11:47:39,438 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2023-11-10 11:47:39,438 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 207 flow [2023-11-10 11:47:39,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.71428571428571) internal successors, (495), 7 states have internal predecessors, (495), 0 states have call successors, (0), 0 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 11:47:39,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:47:39,439 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] [2023-11-10 11:47:39,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:47:39,440 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 11:47:39,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:47:39,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1441868786, now seen corresponding path program 1 times [2023-11-10 11:47:39,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:47:39,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240622607] [2023-11-10 11:47:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:47:39,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:47:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:47:39,765 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 11:47:39,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:47:39,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240622607] [2023-11-10 11:47:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240622607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:47:39,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:47:39,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:47:39,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233762596] [2023-11-10 11:47:39,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:47:39,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:47:39,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:47:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:47:39,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:47:39,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 91 [2023-11-10 11:47:39,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 207 flow. Second operand has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 0 states have call successors, (0), 0 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 11:47:39,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:47:39,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 91 [2023-11-10 11:47:39,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:47:40,044 INFO L124 PetriNetUnfolderBase]: 55/331 cut-off events. [2023-11-10 11:47:40,045 INFO L125 PetriNetUnfolderBase]: For 502/574 co-relation queries the response was YES. [2023-11-10 11:47:40,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 331 events. 55/331 cut-off events. For 502/574 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1713 event pairs, 10 based on Foata normal form. 9/334 useless extension candidates. Maximal degree in co-relation 753. Up to 54 conditions per place. [2023-11-10 11:47:40,050 INFO L140 encePairwiseOnDemand]: 82/91 looper letters, 19 selfloop transitions, 7 changer transitions 28/110 dead transitions. [2023-11-10 11:47:40,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 110 transitions, 539 flow [2023-11-10 11:47:40,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:47:40,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:47:40,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 954 transitions. [2023-11-10 11:47:40,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8064243448858833 [2023-11-10 11:47:40,053 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 954 transitions. [2023-11-10 11:47:40,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 954 transitions. [2023-11-10 11:47:40,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:47:40,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 954 transitions. [2023-11-10 11:47:40,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.38461538461539) internal successors, (954), 13 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 11:47:40,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 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 11:47:40,060 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 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 11:47:40,060 INFO L175 Difference]: Start difference. First operand has 102 places, 74 transitions, 207 flow. Second operand 13 states and 954 transitions. [2023-11-10 11:47:40,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 110 transitions, 539 flow [2023-11-10 11:47:40,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 110 transitions, 461 flow, removed 28 selfloop flow, removed 8 redundant places. [2023-11-10 11:47:40,066 INFO L231 Difference]: Finished difference. Result has 107 places, 75 transitions, 227 flow [2023-11-10 11:47:40,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=227, PETRI_PLACES=107, PETRI_TRANSITIONS=75} [2023-11-10 11:47:40,067 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 25 predicate places. [2023-11-10 11:47:40,067 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 75 transitions, 227 flow [2023-11-10 11:47:40,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.85714285714286) internal successors, (496), 7 states have internal predecessors, (496), 0 states have call successors, (0), 0 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 11:47:40,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:47:40,068 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] [2023-11-10 11:47:40,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:47:40,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 11:47:40,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:47:40,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1803607539, now seen corresponding path program 1 times [2023-11-10 11:47:40,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:47:40,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642289184] [2023-11-10 11:47:40,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:47:40,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:47:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:47:40,296 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 11:47:40,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:47:40,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642289184] [2023-11-10 11:47:40,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642289184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:47:40,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:47:40,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:47:40,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372897862] [2023-11-10 11:47:40,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:47:40,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:47:40,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:47:40,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:47:40,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:47:40,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 91 [2023-11-10 11:47:40,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 75 transitions, 227 flow. Second operand has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:47:40,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:47:40,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 91 [2023-11-10 11:47:40,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:47:40,486 INFO L124 PetriNetUnfolderBase]: 68/310 cut-off events. [2023-11-10 11:47:40,487 INFO L125 PetriNetUnfolderBase]: For 667/857 co-relation queries the response was YES. [2023-11-10 11:47:40,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 310 events. 68/310 cut-off events. For 667/857 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1489 event pairs, 8 based on Foata normal form. 9/306 useless extension candidates. Maximal degree in co-relation 807. Up to 69 conditions per place. [2023-11-10 11:47:40,489 INFO L140 encePairwiseOnDemand]: 83/91 looper letters, 14 selfloop transitions, 4 changer transitions 26/104 dead transitions. [2023-11-10 11:47:40,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 104 transitions, 516 flow [2023-11-10 11:47:40,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:47:40,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:47:40,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 747 transitions. [2023-11-10 11:47:40,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8208791208791208 [2023-11-10 11:47:40,492 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 747 transitions. [2023-11-10 11:47:40,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 747 transitions. [2023-11-10 11:47:40,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:47:40,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 747 transitions. [2023-11-10 11:47:40,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.7) internal successors, (747), 10 states have internal predecessors, (747), 0 states have call successors, (0), 0 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 11:47:40,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 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 11:47:40,497 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 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 11:47:40,497 INFO L175 Difference]: Start difference. First operand has 107 places, 75 transitions, 227 flow. Second operand 10 states and 747 transitions. [2023-11-10 11:47:40,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 104 transitions, 516 flow [2023-11-10 11:47:40,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 104 transitions, 454 flow, removed 24 selfloop flow, removed 10 redundant places. [2023-11-10 11:47:40,502 INFO L231 Difference]: Finished difference. Result has 105 places, 75 transitions, 227 flow [2023-11-10 11:47:40,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=227, PETRI_PLACES=105, PETRI_TRANSITIONS=75} [2023-11-10 11:47:40,503 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 23 predicate places. [2023-11-10 11:47:40,503 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 75 transitions, 227 flow [2023-11-10 11:47:40,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:47:40,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:47:40,504 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] [2023-11-10 11:47:40,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:47:40,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 11:47:40,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:47:40,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1610639918, now seen corresponding path program 1 times [2023-11-10 11:47:40,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:47:40,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090628833] [2023-11-10 11:47:40,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:47:40,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:47:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:47:40,663 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 11:47:40,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:47:40,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090628833] [2023-11-10 11:47:40,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090628833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:47:40,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:47:40,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:47:40,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787428835] [2023-11-10 11:47:40,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:47:40,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:47:40,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:47:40,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:47:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:47:40,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2023-11-10 11:47:40,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 75 transitions, 227 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 11:47:40,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:47:40,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2023-11-10 11:47:40,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:47:40,830 INFO L124 PetriNetUnfolderBase]: 315/804 cut-off events. [2023-11-10 11:47:40,830 INFO L125 PetriNetUnfolderBase]: For 392/400 co-relation queries the response was YES. [2023-11-10 11:47:40,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1652 conditions, 804 events. 315/804 cut-off events. For 392/400 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5417 event pairs, 11 based on Foata normal form. 0/731 useless extension candidates. Maximal degree in co-relation 1605. Up to 257 conditions per place. [2023-11-10 11:47:40,836 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 28 selfloop transitions, 15 changer transitions 5/107 dead transitions. [2023-11-10 11:47:40,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 107 transitions, 391 flow [2023-11-10 11:47:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-10 11:47:40,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-10 11:47:40,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 770 transitions. [2023-11-10 11:47:40,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8461538461538461 [2023-11-10 11:47:40,839 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 770 transitions. [2023-11-10 11:47:40,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 770 transitions. [2023-11-10 11:47:40,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:47:40,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 770 transitions. [2023-11-10 11:47:40,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.0) internal successors, (770), 10 states have internal predecessors, (770), 0 states have call successors, (0), 0 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 11:47:40,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 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 11:47:40,844 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 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 11:47:40,844 INFO L175 Difference]: Start difference. First operand has 105 places, 75 transitions, 227 flow. Second operand 10 states and 770 transitions. [2023-11-10 11:47:40,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 107 transitions, 391 flow [2023-11-10 11:47:40,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 107 transitions, 365 flow, removed 8 selfloop flow, removed 10 redundant places. [2023-11-10 11:47:40,849 INFO L231 Difference]: Finished difference. Result has 104 places, 88 transitions, 310 flow [2023-11-10 11:47:40,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=310, PETRI_PLACES=104, PETRI_TRANSITIONS=88} [2023-11-10 11:47:40,851 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 22 predicate places. [2023-11-10 11:47:40,851 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 88 transitions, 310 flow [2023-11-10 11:47:40,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 11:47:40,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:47:40,852 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] [2023-11-10 11:47:40,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:47:40,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 11:47:40,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:47:40,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2008334407, now seen corresponding path program 1 times [2023-11-10 11:47:40,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:47:40,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995785770] [2023-11-10 11:47:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:47:40,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:47:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:47:41,020 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 11:47:41,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:47:41,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995785770] [2023-11-10 11:47:41,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995785770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:47:41,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:47:41,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:47:41,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122037596] [2023-11-10 11:47:41,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:47:41,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:47:41,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:47:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:47:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:47:41,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2023-11-10 11:47:41,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 88 transitions, 310 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 11:47:41,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:47:41,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2023-11-10 11:47:41,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:47:41,229 INFO L124 PetriNetUnfolderBase]: 268/766 cut-off events. [2023-11-10 11:47:41,229 INFO L125 PetriNetUnfolderBase]: For 1625/1870 co-relation queries the response was YES. [2023-11-10 11:47:41,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2487 conditions, 766 events. 268/766 cut-off events. For 1625/1870 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5314 event pairs, 0 based on Foata normal form. 53/781 useless extension candidates. Maximal degree in co-relation 2442. Up to 289 conditions per place. [2023-11-10 11:47:41,234 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 28 selfloop transitions, 28 changer transitions 11/126 dead transitions. [2023-11-10 11:47:41,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 126 transitions, 680 flow [2023-11-10 11:47:41,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:47:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:47:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 999 transitions. [2023-11-10 11:47:41,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8444632290786137 [2023-11-10 11:47:41,238 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 999 transitions. [2023-11-10 11:47:41,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 999 transitions. [2023-11-10 11:47:41,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:47:41,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 999 transitions. [2023-11-10 11:47:41,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.84615384615384) internal successors, (999), 13 states have internal predecessors, (999), 0 states have call successors, (0), 0 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 11:47:41,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 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 11:47:41,244 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 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 11:47:41,244 INFO L175 Difference]: Start difference. First operand has 104 places, 88 transitions, 310 flow. Second operand 13 states and 999 transitions. [2023-11-10 11:47:41,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 126 transitions, 680 flow [2023-11-10 11:47:41,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 126 transitions, 673 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-10 11:47:41,249 INFO L231 Difference]: Finished difference. Result has 120 places, 105 transitions, 529 flow [2023-11-10 11:47:41,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=529, PETRI_PLACES=120, PETRI_TRANSITIONS=105} [2023-11-10 11:47:41,250 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 38 predicate places. [2023-11-10 11:47:41,250 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 105 transitions, 529 flow [2023-11-10 11:47:41,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 11:47:41,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:47:41,250 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] [2023-11-10 11:47:41,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:47:41,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 11:47:41,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:47:41,251 INFO L85 PathProgramCache]: Analyzing trace with hash -512838970, now seen corresponding path program 1 times [2023-11-10 11:47:41,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:47:41,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711175605] [2023-11-10 11:47:41,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:47:41,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:47:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:47:41,432 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 11:47:41,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:47:41,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711175605] [2023-11-10 11:47:41,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711175605] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:47:41,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:47:41,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:47:41,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835931984] [2023-11-10 11:47:41,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:47:41,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:47:41,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:47:41,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:47:41,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:47:41,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 91 [2023-11-10 11:47:41,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 105 transitions, 529 flow. Second operand has 8 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 0 states have call successors, (0), 0 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 11:47:41,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:47:41,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 91 [2023-11-10 11:47:41,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:47:41,668 INFO L124 PetriNetUnfolderBase]: 176/653 cut-off events. [2023-11-10 11:47:41,668 INFO L125 PetriNetUnfolderBase]: For 2740/3182 co-relation queries the response was YES. [2023-11-10 11:47:41,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2557 conditions, 653 events. 176/653 cut-off events. For 2740/3182 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4874 event pairs, 0 based on Foata normal form. 76/696 useless extension candidates. Maximal degree in co-relation 2505. Up to 201 conditions per place. [2023-11-10 11:47:41,673 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 22 selfloop transitions, 32 changer transitions 21/134 dead transitions. [2023-11-10 11:47:41,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 134 transitions, 873 flow [2023-11-10 11:47:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-10 11:47:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-10 11:47:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1212 transitions. [2023-11-10 11:47:41,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8324175824175825 [2023-11-10 11:47:41,677 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1212 transitions. [2023-11-10 11:47:41,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1212 transitions. [2023-11-10 11:47:41,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:47:41,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1212 transitions. [2023-11-10 11:47:41,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 75.75) internal successors, (1212), 16 states have internal predecessors, (1212), 0 states have call successors, (0), 0 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 11:47:41,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 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 11:47:41,683 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 91.0) internal successors, (1547), 17 states have internal predecessors, (1547), 0 states have call successors, (0), 0 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 11:47:41,683 INFO L175 Difference]: Start difference. First operand has 120 places, 105 transitions, 529 flow. Second operand 16 states and 1212 transitions. [2023-11-10 11:47:41,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 134 transitions, 873 flow [2023-11-10 11:47:41,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 134 transitions, 789 flow, removed 34 selfloop flow, removed 8 redundant places. [2023-11-10 11:47:41,693 INFO L231 Difference]: Finished difference. Result has 134 places, 106 transitions, 559 flow [2023-11-10 11:47:41,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=559, PETRI_PLACES=134, PETRI_TRANSITIONS=106} [2023-11-10 11:47:41,694 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 52 predicate places. [2023-11-10 11:47:41,695 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 106 transitions, 559 flow [2023-11-10 11:47:41,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 0 states have call successors, (0), 0 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 11:47:41,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:47:41,695 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] [2023-11-10 11:47:41,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:47:41,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-10 11:47:41,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:47:41,696 INFO L85 PathProgramCache]: Analyzing trace with hash -543586034, now seen corresponding path program 1 times [2023-11-10 11:47:41,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:47:41,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325072079] [2023-11-10 11:47:41,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:47:41,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:47:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:47:41,889 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 11:47:41,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:47:41,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325072079] [2023-11-10 11:47:41,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325072079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:47:41,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:47:41,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:47:41,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959713778] [2023-11-10 11:47:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:47:41,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:47:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:47:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:47:41,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:47:41,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 91 [2023-11-10 11:47:41,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 106 transitions, 559 flow. Second operand has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 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 11:47:41,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:47:41,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 91 [2023-11-10 11:47:41,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:47:42,091 INFO L124 PetriNetUnfolderBase]: 116/655 cut-off events. [2023-11-10 11:47:42,092 INFO L125 PetriNetUnfolderBase]: For 1617/1653 co-relation queries the response was YES. [2023-11-10 11:47:42,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2069 conditions, 655 events. 116/655 cut-off events. For 1617/1653 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5110 event pairs, 2 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 2017. Up to 87 conditions per place. [2023-11-10 11:47:42,096 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 0 selfloop transitions, 0 changer transitions 114/114 dead transitions. [2023-11-10 11:47:42,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 114 transitions, 654 flow [2023-11-10 11:47:42,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 11:47:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 11:47:42,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 565 transitions. [2023-11-10 11:47:42,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7760989010989011 [2023-11-10 11:47:42,098 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 565 transitions. [2023-11-10 11:47:42,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 565 transitions. [2023-11-10 11:47:42,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:47:42,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 565 transitions. [2023-11-10 11:47:42,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.625) internal successors, (565), 8 states have internal predecessors, (565), 0 states have call successors, (0), 0 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 11:47:42,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 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 11:47:42,102 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 91.0) internal successors, (819), 9 states have internal predecessors, (819), 0 states have call successors, (0), 0 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 11:47:42,102 INFO L175 Difference]: Start difference. First operand has 134 places, 106 transitions, 559 flow. Second operand 8 states and 565 transitions. [2023-11-10 11:47:42,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 114 transitions, 654 flow [2023-11-10 11:47:42,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 114 transitions, 557 flow, removed 15 selfloop flow, removed 15 redundant places. [2023-11-10 11:47:42,116 INFO L231 Difference]: Finished difference. Result has 121 places, 0 transitions, 0 flow [2023-11-10 11:47:42,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=121, PETRI_TRANSITIONS=0} [2023-11-10 11:47:42,117 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 39 predicate places. [2023-11-10 11:47:42,117 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 0 transitions, 0 flow [2023-11-10 11:47:42,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.57142857142857) internal successors, (487), 7 states have internal predecessors, (487), 0 states have call successors, (0), 0 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 11:47:42,121 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-10 11:47:42,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-10 11:47:42,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-10 11:47:42,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-10 11:47:42,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 11:47:42,122 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:47:42,125 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 11:47:42,125 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 11:47:42,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:47:42 BasicIcfg [2023-11-10 11:47:42,131 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 11:47:42,133 INFO L158 Benchmark]: Toolchain (without parser) took 5152.05ms. Allocated memory was 252.7MB in the beginning and 304.1MB in the end (delta: 51.4MB). Free memory was 206.5MB in the beginning and 254.1MB in the end (delta: -47.6MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2023-11-10 11:47:42,141 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 182.5MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:47:42,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.90ms. Allocated memory is still 252.7MB. Free memory was 206.1MB in the beginning and 185.9MB in the end (delta: 20.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-10 11:47:42,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.32ms. Allocated memory is still 252.7MB. Free memory was 185.9MB in the beginning and 183.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:47:42,143 INFO L158 Benchmark]: Boogie Preprocessor took 27.87ms. Allocated memory is still 252.7MB. Free memory was 183.8MB in the beginning and 182.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:47:42,143 INFO L158 Benchmark]: RCFGBuilder took 365.92ms. Allocated memory is still 252.7MB. Free memory was 182.4MB in the beginning and 168.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-10 11:47:42,143 INFO L158 Benchmark]: TraceAbstraction took 4198.98ms. Allocated memory was 252.7MB in the beginning and 304.1MB in the end (delta: 51.4MB). Free memory was 168.3MB in the beginning and 254.1MB in the end (delta: -85.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:47:42,144 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 182.5MB. Free memory is still 131.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 490.90ms. Allocated memory is still 252.7MB. Free memory was 206.1MB in the beginning and 185.9MB in the end (delta: 20.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 57.32ms. Allocated memory is still 252.7MB. Free memory was 185.9MB in the beginning and 183.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.87ms. Allocated memory is still 252.7MB. Free memory was 183.8MB in the beginning and 182.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 365.92ms. Allocated memory is still 252.7MB. Free memory was 182.4MB in the beginning and 168.7MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4198.98ms. Allocated memory was 252.7MB in the beginning and 304.1MB in the end (delta: 51.4MB). Free memory was 168.3MB in the beginning and 254.1MB in the end (delta: -85.8MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 117 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.1s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 339 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 339 mSDsluCounter, 389 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 302 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 447 IncrementalHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 87 mSDtfsCounter, 447 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=559occurred in iteration=6, InterpolantAutomatonStates: 83, 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, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 396 NumberOfCodeBlocks, 396 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 389 ConstructedInterpolants, 0 QuantifiedInterpolants, 1603 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-10 11:47:42,166 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...