/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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 11:45:16,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:45:16,319 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 11:45:16,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:45:16,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:45:16,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:45:16,341 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:45:16,341 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:45:16,341 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:45:16,342 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:45:16,342 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:45:16,342 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:45:16,342 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:45:16,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:45:16,343 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:45:16,343 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:45:16,343 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:45:16,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:45:16,344 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:45:16,344 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:45:16,344 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:45:16,349 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:45:16,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:45:16,349 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:45:16,352 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:45:16,352 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:45:16,352 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:45:16,353 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:45:16,353 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:45:16,354 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:45:16,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:45:16,354 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:45:16,355 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:45:16,355 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:45:16,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:45:16,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:45:16,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:45:16,565 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:45:16,566 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:45:16,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-10 11:45:17,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:45:17,698 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:45:17,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-10 11:45:17,709 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/206a3adb6/d04dfa77b48a4c4695e97ca03e00544f/FLAGb4f6998b5 [2023-11-10 11:45:17,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/206a3adb6/d04dfa77b48a4c4695e97ca03e00544f [2023-11-10 11:45:17,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:45:17,721 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:45:17,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:45:17,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:45:17,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:45:17,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:45:17" (1/1) ... [2023-11-10 11:45:17,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1baff7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:17, skipping insertion in model container [2023-11-10 11:45:17,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:45:17" (1/1) ... [2023-11-10 11:45:17,759 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:45:17,856 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-11-10 11:45:18,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:45:18,069 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:45:18,078 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-11-10 11:45:18,135 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:45:18,159 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:45:18,159 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 11:45:18,164 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:45:18,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18 WrapperNode [2023-11-10 11:45:18,166 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:45:18,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:45:18,167 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:45:18,167 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:45:18,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,183 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,203 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 153 [2023-11-10 11:45:18,203 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:45:18,203 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:45:18,204 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:45:18,204 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:45:18,209 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,210 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,218 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,221 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,222 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:45:18,225 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:45:18,225 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:45:18,225 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:45:18,226 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (1/1) ... [2023-11-10 11:45:18,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:45:18,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:45:18,249 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 11:45:18,268 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 11:45:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:45:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 11:45:18,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:45:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:45:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:45:18,284 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-10 11:45:18,284 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-10 11:45:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-10 11:45:18,285 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-10 11:45:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:45:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 11:45:18,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:45:18,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:45:18,286 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 11:45:18,393 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:45:18,395 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:45:18,601 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:45:18,794 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:45:18,794 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 11:45:18,798 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:45:18 BoogieIcfgContainer [2023-11-10 11:45:18,798 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:45:18,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:45:18,800 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:45:18,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:45:18,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:45:17" (1/3) ... [2023-11-10 11:45:18,803 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312159cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:45:18, skipping insertion in model container [2023-11-10 11:45:18,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:45:18" (2/3) ... [2023-11-10 11:45:18,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312159cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:45:18, skipping insertion in model container [2023-11-10 11:45:18,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:45:18" (3/3) ... [2023-11-10 11:45:18,806 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-11-10 11:45:18,818 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:45:18,818 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-10 11:45:18,818 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:45:18,860 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-10 11:45:18,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 95 transitions, 198 flow [2023-11-10 11:45:18,935 INFO L124 PetriNetUnfolderBase]: 2/93 cut-off events. [2023-11-10 11:45:18,935 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:45:18,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 93 events. 2/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 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 11:45:18,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 95 transitions, 198 flow [2023-11-10 11:45:18,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 93 transitions, 192 flow [2023-11-10 11:45:18,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:45:18,960 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;@7455ffb4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:45:18,960 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-10 11:45:18,969 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:45:18,970 INFO L124 PetriNetUnfolderBase]: 0/55 cut-off events. [2023-11-10 11:45:18,970 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:45:18,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:18,970 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] [2023-11-10 11:45:18,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:18,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:18,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1240377627, now seen corresponding path program 1 times [2023-11-10 11:45:18,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:18,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923295022] [2023-11-10 11:45:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:19,384 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 11:45:19,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:19,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923295022] [2023-11-10 11:45:19,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923295022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:19,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:19,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-10 11:45:19,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376570057] [2023-11-10 11:45:19,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:19,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 11:45:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:19,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 11:45:19,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 11:45:19,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 95 [2023-11-10 11:45:19,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 93 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 11:45:19,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:19,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 95 [2023-11-10 11:45:19,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:19,601 INFO L124 PetriNetUnfolderBase]: 60/464 cut-off events. [2023-11-10 11:45:19,601 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-10 11:45:19,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 464 events. 60/464 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2666 event pairs, 25 based on Foata normal form. 24/457 useless extension candidates. Maximal degree in co-relation 546. Up to 88 conditions per place. [2023-11-10 11:45:19,608 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 14 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2023-11-10 11:45:19,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 94 transitions, 226 flow [2023-11-10 11:45:19,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 11:45:19,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 11:45:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 261 transitions. [2023-11-10 11:45:19,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.9157894736842105 [2023-11-10 11:45:19,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 261 transitions. [2023-11-10 11:45:19,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 261 transitions. [2023-11-10 11:45:19,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:19,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 261 transitions. [2023-11-10 11:45:19,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 11:45:19,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 11:45:19,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 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 11:45:19,638 INFO L175 Difference]: Start difference. First operand has 98 places, 93 transitions, 192 flow. Second operand 3 states and 261 transitions. [2023-11-10 11:45:19,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 94 transitions, 226 flow [2023-11-10 11:45:19,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 94 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-10 11:45:19,645 INFO L231 Difference]: Finished difference. Result has 96 places, 89 transitions, 186 flow [2023-11-10 11:45:19,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=96, PETRI_TRANSITIONS=89} [2023-11-10 11:45:19,649 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, -2 predicate places. [2023-11-10 11:45:19,649 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 89 transitions, 186 flow [2023-11-10 11:45:19,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 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 11:45:19,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:19,650 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] [2023-11-10 11:45:19,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:45:19,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:19,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:19,651 INFO L85 PathProgramCache]: Analyzing trace with hash -212229443, now seen corresponding path program 1 times [2023-11-10 11:45:19,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:19,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460639269] [2023-11-10 11:45:19,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:19,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:20,300 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 11:45:20,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:20,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460639269] [2023-11-10 11:45:20,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460639269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:20,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:20,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-10 11:45:20,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856227997] [2023-11-10 11:45:20,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:20,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-10 11:45:20,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:20,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-10 11:45:20,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-10 11:45:20,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 95 [2023-11-10 11:45:20,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 89 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 11:45:20,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:20,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 95 [2023-11-10 11:45:20,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:20,670 INFO L124 PetriNetUnfolderBase]: 434/1176 cut-off events. [2023-11-10 11:45:20,670 INFO L125 PetriNetUnfolderBase]: For 61/61 co-relation queries the response was YES. [2023-11-10 11:45:20,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 1176 events. 434/1176 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7349 event pairs, 154 based on Foata normal form. 0/1136 useless extension candidates. Maximal degree in co-relation 1953. Up to 235 conditions per place. [2023-11-10 11:45:20,675 INFO L140 encePairwiseOnDemand]: 87/95 looper letters, 31 selfloop transitions, 2 changer transitions 60/144 dead transitions. [2023-11-10 11:45:20,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 144 transitions, 482 flow [2023-11-10 11:45:20,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:45:20,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:45:20,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 636 transitions. [2023-11-10 11:45:20,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.743859649122807 [2023-11-10 11:45:20,678 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 636 transitions. [2023-11-10 11:45:20,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 636 transitions. [2023-11-10 11:45:20,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:20,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 636 transitions. [2023-11-10 11:45:20,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 70.66666666666667) internal successors, (636), 9 states have internal predecessors, (636), 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 11:45:20,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 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 11:45:20,683 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 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 11:45:20,683 INFO L175 Difference]: Start difference. First operand has 96 places, 89 transitions, 186 flow. Second operand 9 states and 636 transitions. [2023-11-10 11:45:20,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 144 transitions, 482 flow [2023-11-10 11:45:20,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 144 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-10 11:45:20,686 INFO L231 Difference]: Finished difference. Result has 109 places, 78 transitions, 180 flow [2023-11-10 11:45:20,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=180, PETRI_PLACES=109, PETRI_TRANSITIONS=78} [2023-11-10 11:45:20,687 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 11 predicate places. [2023-11-10 11:45:20,687 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 78 transitions, 180 flow [2023-11-10 11:45:20,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.714285714285715) internal successors, (446), 7 states have internal predecessors, (446), 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 11:45:20,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:20,689 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] [2023-11-10 11:45:20,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:45:20,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:20,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:20,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1697606405, now seen corresponding path program 1 times [2023-11-10 11:45:20,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:20,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610944041] [2023-11-10 11:45:20,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:20,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:21,735 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 11:45:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:21,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610944041] [2023-11-10 11:45:21,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610944041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:21,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:21,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-10 11:45:21,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059673462] [2023-11-10 11:45:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:21,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-10 11:45:21,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-10 11:45:21,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-11-10 11:45:21,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 95 [2023-11-10 11:45:21,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 78 transitions, 180 flow. Second operand has 16 states, 16 states have (on average 60.5) internal successors, (968), 16 states have internal predecessors, (968), 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 11:45:21,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:21,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 95 [2023-11-10 11:45:21,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:22,190 INFO L124 PetriNetUnfolderBase]: 141/381 cut-off events. [2023-11-10 11:45:22,191 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-10 11:45:22,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 791 conditions, 381 events. 141/381 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1533 event pairs, 30 based on Foata normal form. 10/369 useless extension candidates. Maximal degree in co-relation 737. Up to 135 conditions per place. [2023-11-10 11:45:22,195 INFO L140 encePairwiseOnDemand]: 80/95 looper letters, 30 selfloop transitions, 12 changer transitions 32/123 dead transitions. [2023-11-10 11:45:22,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 123 transitions, 454 flow [2023-11-10 11:45:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-10 11:45:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-10 11:45:22,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1257 transitions. [2023-11-10 11:45:22,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.661578947368421 [2023-11-10 11:45:22,198 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1257 transitions. [2023-11-10 11:45:22,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1257 transitions. [2023-11-10 11:45:22,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:22,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1257 transitions. [2023-11-10 11:45:22,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 62.85) internal successors, (1257), 20 states have internal predecessors, (1257), 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 11:45:22,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 95.0) internal successors, (1995), 21 states have internal predecessors, (1995), 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 11:45:22,205 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 95.0) internal successors, (1995), 21 states have internal predecessors, (1995), 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 11:45:22,205 INFO L175 Difference]: Start difference. First operand has 109 places, 78 transitions, 180 flow. Second operand 20 states and 1257 transitions. [2023-11-10 11:45:22,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 123 transitions, 454 flow [2023-11-10 11:45:22,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 123 transitions, 410 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-10 11:45:22,210 INFO L231 Difference]: Finished difference. Result has 115 places, 80 transitions, 226 flow [2023-11-10 11:45:22,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=226, PETRI_PLACES=115, PETRI_TRANSITIONS=80} [2023-11-10 11:45:22,212 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 17 predicate places. [2023-11-10 11:45:22,212 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 80 transitions, 226 flow [2023-11-10 11:45:22,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 60.5) internal successors, (968), 16 states have internal predecessors, (968), 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 11:45:22,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:22,212 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] [2023-11-10 11:45:22,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:45:22,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:22,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:22,213 INFO L85 PathProgramCache]: Analyzing trace with hash -508165946, now seen corresponding path program 1 times [2023-11-10 11:45:22,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:22,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472513456] [2023-11-10 11:45:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:22,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:23,042 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 11:45:23,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472513456] [2023-11-10 11:45:23,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472513456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:23,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:23,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-10 11:45:23,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968218872] [2023-11-10 11:45:23,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:23,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-10 11:45:23,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-10 11:45:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-10 11:45:23,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 95 [2023-11-10 11:45:23,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 80 transitions, 226 flow. Second operand has 14 states, 14 states have (on average 65.5) internal successors, (917), 14 states have internal predecessors, (917), 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 11:45:23,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:23,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 95 [2023-11-10 11:45:23,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:23,441 INFO L124 PetriNetUnfolderBase]: 110/363 cut-off events. [2023-11-10 11:45:23,442 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2023-11-10 11:45:23,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 363 events. 110/363 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1463 event pairs, 25 based on Foata normal form. 6/347 useless extension candidates. Maximal degree in co-relation 727. Up to 137 conditions per place. [2023-11-10 11:45:23,444 INFO L140 encePairwiseOnDemand]: 83/95 looper letters, 28 selfloop transitions, 10 changer transitions 19/111 dead transitions. [2023-11-10 11:45:23,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 111 transitions, 441 flow [2023-11-10 11:45:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-10 11:45:23,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-10 11:45:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1019 transitions. [2023-11-10 11:45:23,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7150877192982457 [2023-11-10 11:45:23,448 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1019 transitions. [2023-11-10 11:45:23,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1019 transitions. [2023-11-10 11:45:23,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:23,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1019 transitions. [2023-11-10 11:45:23,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 67.93333333333334) internal successors, (1019), 15 states have internal predecessors, (1019), 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 11:45:23,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 95.0) internal successors, (1520), 16 states have internal predecessors, (1520), 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 11:45:23,453 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 95.0) internal successors, (1520), 16 states have internal predecessors, (1520), 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 11:45:23,453 INFO L175 Difference]: Start difference. First operand has 115 places, 80 transitions, 226 flow. Second operand 15 states and 1019 transitions. [2023-11-10 11:45:23,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 111 transitions, 441 flow [2023-11-10 11:45:23,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 111 transitions, 379 flow, removed 21 selfloop flow, removed 17 redundant places. [2023-11-10 11:45:23,459 INFO L231 Difference]: Finished difference. Result has 111 places, 83 transitions, 248 flow [2023-11-10 11:45:23,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=248, PETRI_PLACES=111, PETRI_TRANSITIONS=83} [2023-11-10 11:45:23,460 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 13 predicate places. [2023-11-10 11:45:23,460 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 83 transitions, 248 flow [2023-11-10 11:45:23,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 65.5) internal successors, (917), 14 states have internal predecessors, (917), 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 11:45:23,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:23,461 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] [2023-11-10 11:45:23,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:45:23,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:23,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:23,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1125898400, now seen corresponding path program 2 times [2023-11-10 11:45:23,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:23,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719015932] [2023-11-10 11:45:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:23,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:24,076 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 11:45:24,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:24,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719015932] [2023-11-10 11:45:24,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719015932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:24,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:24,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-10 11:45:24,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967129046] [2023-11-10 11:45:24,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:24,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 11:45:24,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:24,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 11:45:24,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-10 11:45:24,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 95 [2023-11-10 11:45:24,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 83 transitions, 248 flow. Second operand has 12 states, 12 states have (on average 67.58333333333333) internal successors, (811), 12 states have internal predecessors, (811), 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 11:45:24,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:24,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 95 [2023-11-10 11:45:24,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:24,383 INFO L124 PetriNetUnfolderBase]: 124/398 cut-off events. [2023-11-10 11:45:24,383 INFO L125 PetriNetUnfolderBase]: For 519/520 co-relation queries the response was YES. [2023-11-10 11:45:24,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 398 events. 124/398 cut-off events. For 519/520 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1774 event pairs, 10 based on Foata normal form. 7/382 useless extension candidates. Maximal degree in co-relation 925. Up to 151 conditions per place. [2023-11-10 11:45:24,385 INFO L140 encePairwiseOnDemand]: 80/95 looper letters, 26 selfloop transitions, 19 changer transitions 22/123 dead transitions. [2023-11-10 11:45:24,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 123 transitions, 566 flow [2023-11-10 11:45:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-10 11:45:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-10 11:45:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1056 transitions. [2023-11-10 11:45:24,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7410526315789474 [2023-11-10 11:45:24,399 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1056 transitions. [2023-11-10 11:45:24,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1056 transitions. [2023-11-10 11:45:24,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:24,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1056 transitions. [2023-11-10 11:45:24,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 70.4) internal successors, (1056), 15 states have internal predecessors, (1056), 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 11:45:24,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 95.0) internal successors, (1520), 16 states have internal predecessors, (1520), 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 11:45:24,403 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 95.0) internal successors, (1520), 16 states have internal predecessors, (1520), 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 11:45:24,403 INFO L175 Difference]: Start difference. First operand has 111 places, 83 transitions, 248 flow. Second operand 15 states and 1056 transitions. [2023-11-10 11:45:24,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 123 transitions, 566 flow [2023-11-10 11:45:24,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 535 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-11-10 11:45:24,406 INFO L231 Difference]: Finished difference. Result has 119 places, 94 transitions, 368 flow [2023-11-10 11:45:24,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=368, PETRI_PLACES=119, PETRI_TRANSITIONS=94} [2023-11-10 11:45:24,407 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 21 predicate places. [2023-11-10 11:45:24,407 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 94 transitions, 368 flow [2023-11-10 11:45:24,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.58333333333333) internal successors, (811), 12 states have internal predecessors, (811), 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 11:45:24,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:24,408 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] [2023-11-10 11:45:24,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:45:24,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:24,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:24,421 INFO L85 PathProgramCache]: Analyzing trace with hash -708355166, now seen corresponding path program 3 times [2023-11-10 11:45:24,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:24,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657307798] [2023-11-10 11:45:24,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:24,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:24,936 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 11:45:24,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:24,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657307798] [2023-11-10 11:45:24,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657307798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:24,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:24,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 11:45:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269761768] [2023-11-10 11:45:24,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:24,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 11:45:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 11:45:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-10 11:45:24,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 95 [2023-11-10 11:45:24,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 94 transitions, 368 flow. Second operand has 11 states, 11 states have (on average 67.72727272727273) internal successors, (745), 11 states have internal predecessors, (745), 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 11:45:24,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:24,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 95 [2023-11-10 11:45:24,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:25,229 INFO L124 PetriNetUnfolderBase]: 134/412 cut-off events. [2023-11-10 11:45:25,229 INFO L125 PetriNetUnfolderBase]: For 1399/1574 co-relation queries the response was YES. [2023-11-10 11:45:25,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 412 events. 134/412 cut-off events. For 1399/1574 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1772 event pairs, 45 based on Foata normal form. 13/394 useless extension candidates. Maximal degree in co-relation 1410. Up to 191 conditions per place. [2023-11-10 11:45:25,232 INFO L140 encePairwiseOnDemand]: 81/95 looper letters, 33 selfloop transitions, 15 changer transitions 19/123 dead transitions. [2023-11-10 11:45:25,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 123 transitions, 746 flow [2023-11-10 11:45:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:45:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:45:25,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 912 transitions. [2023-11-10 11:45:25,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7384615384615385 [2023-11-10 11:45:25,234 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 912 transitions. [2023-11-10 11:45:25,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 912 transitions. [2023-11-10 11:45:25,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:25,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 912 transitions. [2023-11-10 11:45:25,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.15384615384616) internal successors, (912), 13 states have internal predecessors, (912), 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 11:45:25,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 95.0) internal successors, (1330), 14 states have internal predecessors, (1330), 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 11:45:25,239 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 95.0) internal successors, (1330), 14 states have internal predecessors, (1330), 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 11:45:25,239 INFO L175 Difference]: Start difference. First operand has 119 places, 94 transitions, 368 flow. Second operand 13 states and 912 transitions. [2023-11-10 11:45:25,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 123 transitions, 746 flow [2023-11-10 11:45:25,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 692 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-11-10 11:45:25,244 INFO L231 Difference]: Finished difference. Result has 126 places, 99 transitions, 438 flow [2023-11-10 11:45:25,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=438, PETRI_PLACES=126, PETRI_TRANSITIONS=99} [2023-11-10 11:45:25,244 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 28 predicate places. [2023-11-10 11:45:25,244 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 99 transitions, 438 flow [2023-11-10 11:45:25,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.72727272727273) internal successors, (745), 11 states have internal predecessors, (745), 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 11:45:25,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:25,245 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] [2023-11-10 11:45:25,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:45:25,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:25,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:25,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1096592640, now seen corresponding path program 4 times [2023-11-10 11:45:25,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:25,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187506691] [2023-11-10 11:45:25,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:25,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:25,974 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 11:45:25,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:25,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187506691] [2023-11-10 11:45:25,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187506691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:25,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:25,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-10 11:45:25,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836862481] [2023-11-10 11:45:25,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:25,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-10 11:45:25,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:25,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-10 11:45:25,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-10 11:45:25,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 95 [2023-11-10 11:45:25,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 99 transitions, 438 flow. Second operand has 13 states, 13 states have (on average 63.76923076923077) internal successors, (829), 13 states have internal predecessors, (829), 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 11:45:25,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:25,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 95 [2023-11-10 11:45:25,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:26,650 INFO L124 PetriNetUnfolderBase]: 176/492 cut-off events. [2023-11-10 11:45:26,650 INFO L125 PetriNetUnfolderBase]: For 2661/3425 co-relation queries the response was YES. [2023-11-10 11:45:26,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 492 events. 176/492 cut-off events. For 2661/3425 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2323 event pairs, 49 based on Foata normal form. 22/484 useless extension candidates. Maximal degree in co-relation 1993. Up to 213 conditions per place. [2023-11-10 11:45:26,653 INFO L140 encePairwiseOnDemand]: 81/95 looper letters, 46 selfloop transitions, 24 changer transitions 38/160 dead transitions. [2023-11-10 11:45:26,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 160 transitions, 1215 flow [2023-11-10 11:45:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-10 11:45:26,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-10 11:45:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1394 transitions. [2023-11-10 11:45:26,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987468671679198 [2023-11-10 11:45:26,657 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1394 transitions. [2023-11-10 11:45:26,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1394 transitions. [2023-11-10 11:45:26,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:26,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1394 transitions. [2023-11-10 11:45:26,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 66.38095238095238) internal successors, (1394), 21 states have internal predecessors, (1394), 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 11:45:26,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 95.0) internal successors, (2090), 22 states have internal predecessors, (2090), 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 11:45:26,662 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 95.0) internal successors, (2090), 22 states have internal predecessors, (2090), 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 11:45:26,663 INFO L175 Difference]: Start difference. First operand has 126 places, 99 transitions, 438 flow. Second operand 21 states and 1394 transitions. [2023-11-10 11:45:26,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 160 transitions, 1215 flow [2023-11-10 11:45:26,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 160 transitions, 1093 flow, removed 52 selfloop flow, removed 10 redundant places. [2023-11-10 11:45:26,669 INFO L231 Difference]: Finished difference. Result has 146 places, 111 transitions, 628 flow [2023-11-10 11:45:26,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=628, PETRI_PLACES=146, PETRI_TRANSITIONS=111} [2023-11-10 11:45:26,670 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 48 predicate places. [2023-11-10 11:45:26,670 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 111 transitions, 628 flow [2023-11-10 11:45:26,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 63.76923076923077) internal successors, (829), 13 states have internal predecessors, (829), 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 11:45:26,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:26,670 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] [2023-11-10 11:45:26,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 11:45:26,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:26,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:26,671 INFO L85 PathProgramCache]: Analyzing trace with hash -553130868, now seen corresponding path program 5 times [2023-11-10 11:45:26,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:26,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45514522] [2023-11-10 11:45:26,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:26,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:27,229 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 11:45:27,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:27,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45514522] [2023-11-10 11:45:27,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45514522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:27,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:27,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-10 11:45:27,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938966403] [2023-11-10 11:45:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:27,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-10 11:45:27,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:27,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-10 11:45:27,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-10 11:45:27,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 95 [2023-11-10 11:45:27,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 111 transitions, 628 flow. Second operand has 13 states, 13 states have (on average 64.6923076923077) internal successors, (841), 13 states have internal predecessors, (841), 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 11:45:27,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:27,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 95 [2023-11-10 11:45:27,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:27,567 INFO L124 PetriNetUnfolderBase]: 194/540 cut-off events. [2023-11-10 11:45:27,568 INFO L125 PetriNetUnfolderBase]: For 6166/7256 co-relation queries the response was YES. [2023-11-10 11:45:27,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2941 conditions, 540 events. 194/540 cut-off events. For 6166/7256 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2592 event pairs, 33 based on Foata normal form. 18/522 useless extension candidates. Maximal degree in co-relation 2849. Up to 243 conditions per place. [2023-11-10 11:45:27,572 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 50 selfloop transitions, 25 changer transitions 15/143 dead transitions. [2023-11-10 11:45:27,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 143 transitions, 1250 flow [2023-11-10 11:45:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-10 11:45:27,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-10 11:45:27,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 748 transitions. [2023-11-10 11:45:27,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7157894736842105 [2023-11-10 11:45:27,575 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 748 transitions. [2023-11-10 11:45:27,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 748 transitions. [2023-11-10 11:45:27,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:27,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 748 transitions. [2023-11-10 11:45:27,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 68.0) internal successors, (748), 11 states have internal predecessors, (748), 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 11:45:27,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 95.0) internal successors, (1140), 12 states have internal predecessors, (1140), 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 11:45:27,579 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 95.0) internal successors, (1140), 12 states have internal predecessors, (1140), 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 11:45:27,579 INFO L175 Difference]: Start difference. First operand has 146 places, 111 transitions, 628 flow. Second operand 11 states and 748 transitions. [2023-11-10 11:45:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 143 transitions, 1250 flow [2023-11-10 11:45:27,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 143 transitions, 1061 flow, removed 92 selfloop flow, removed 15 redundant places. [2023-11-10 11:45:27,589 INFO L231 Difference]: Finished difference. Result has 135 places, 121 transitions, 754 flow [2023-11-10 11:45:27,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=547, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=754, PETRI_PLACES=135, PETRI_TRANSITIONS=121} [2023-11-10 11:45:27,591 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 37 predicate places. [2023-11-10 11:45:27,591 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 121 transitions, 754 flow [2023-11-10 11:45:27,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 64.6923076923077) internal successors, (841), 13 states have internal predecessors, (841), 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 11:45:27,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:27,592 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] [2023-11-10 11:45:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 11:45:27,592 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:27,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:27,593 INFO L85 PathProgramCache]: Analyzing trace with hash -63525662, now seen corresponding path program 6 times [2023-11-10 11:45:27,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:27,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542227618] [2023-11-10 11:45:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:27,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:28,211 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 11:45:28,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:28,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542227618] [2023-11-10 11:45:28,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542227618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:28,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:28,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-10 11:45:28,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302983359] [2023-11-10 11:45:28,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:28,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 11:45:28,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:28,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 11:45:28,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-10 11:45:28,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 95 [2023-11-10 11:45:28,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 121 transitions, 754 flow. Second operand has 12 states, 12 states have (on average 63.916666666666664) internal successors, (767), 12 states have internal predecessors, (767), 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 11:45:28,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:28,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 95 [2023-11-10 11:45:28,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:28,723 INFO L124 PetriNetUnfolderBase]: 205/633 cut-off events. [2023-11-10 11:45:28,723 INFO L125 PetriNetUnfolderBase]: For 4696/6349 co-relation queries the response was YES. [2023-11-10 11:45:28,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3108 conditions, 633 events. 205/633 cut-off events. For 4696/6349 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3592 event pairs, 40 based on Foata normal form. 39/636 useless extension candidates. Maximal degree in co-relation 3020. Up to 198 conditions per place. [2023-11-10 11:45:28,727 INFO L140 encePairwiseOnDemand]: 84/95 looper letters, 51 selfloop transitions, 30 changer transitions 36/169 dead transitions. [2023-11-10 11:45:28,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 169 transitions, 1584 flow [2023-11-10 11:45:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-10 11:45:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-10 11:45:28,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1071 transitions. [2023-11-10 11:45:28,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7046052631578947 [2023-11-10 11:45:28,729 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1071 transitions. [2023-11-10 11:45:28,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1071 transitions. [2023-11-10 11:45:28,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:28,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1071 transitions. [2023-11-10 11:45:28,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 66.9375) internal successors, (1071), 16 states have internal predecessors, (1071), 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 11:45:28,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 95.0) internal successors, (1615), 17 states have internal predecessors, (1615), 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 11:45:28,733 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 95.0) internal successors, (1615), 17 states have internal predecessors, (1615), 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 11:45:28,733 INFO L175 Difference]: Start difference. First operand has 135 places, 121 transitions, 754 flow. Second operand 16 states and 1071 transitions. [2023-11-10 11:45:28,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 169 transitions, 1584 flow [2023-11-10 11:45:28,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 169 transitions, 1492 flow, removed 39 selfloop flow, removed 8 redundant places. [2023-11-10 11:45:28,742 INFO L231 Difference]: Finished difference. Result has 151 places, 128 transitions, 920 flow [2023-11-10 11:45:28,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=920, PETRI_PLACES=151, PETRI_TRANSITIONS=128} [2023-11-10 11:45:28,743 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 53 predicate places. [2023-11-10 11:45:28,743 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 128 transitions, 920 flow [2023-11-10 11:45:28,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.916666666666664) internal successors, (767), 12 states have internal predecessors, (767), 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 11:45:28,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:28,743 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] [2023-11-10 11:45:28,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-10 11:45:28,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:28,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:28,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1229790681, now seen corresponding path program 1 times [2023-11-10 11:45:28,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:28,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525326673] [2023-11-10 11:45:28,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:28,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:29,014 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 11:45:29,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:29,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525326673] [2023-11-10 11:45:29,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525326673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:29,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:29,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-10 11:45:29,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221942098] [2023-11-10 11:45:29,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:29,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-10 11:45:29,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:29,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-10 11:45:29,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-10 11:45:29,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 95 [2023-11-10 11:45:29,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 128 transitions, 920 flow. Second operand has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 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 11:45:29,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:29,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 95 [2023-11-10 11:45:29,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:29,289 INFO L124 PetriNetUnfolderBase]: 170/595 cut-off events. [2023-11-10 11:45:29,289 INFO L125 PetriNetUnfolderBase]: For 4523/6339 co-relation queries the response was YES. [2023-11-10 11:45:29,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 595 events. 170/595 cut-off events. For 4523/6339 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3578 event pairs, 30 based on Foata normal form. 26/586 useless extension candidates. Maximal degree in co-relation 2812. Up to 211 conditions per place. [2023-11-10 11:45:29,294 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 48 selfloop transitions, 11 changer transitions 36/154 dead transitions. [2023-11-10 11:45:29,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 154 transitions, 1411 flow [2023-11-10 11:45:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 11:45:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 11:45:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 585 transitions. [2023-11-10 11:45:29,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7697368421052632 [2023-11-10 11:45:29,295 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 585 transitions. [2023-11-10 11:45:29,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 585 transitions. [2023-11-10 11:45:29,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:29,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 585 transitions. [2023-11-10 11:45:29,297 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 11:45:29,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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 11:45:29,298 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 95.0) internal successors, (855), 9 states have internal predecessors, (855), 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 11:45:29,298 INFO L175 Difference]: Start difference. First operand has 151 places, 128 transitions, 920 flow. Second operand 8 states and 585 transitions. [2023-11-10 11:45:29,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 154 transitions, 1411 flow [2023-11-10 11:45:29,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 154 transitions, 1324 flow, removed 39 selfloop flow, removed 15 redundant places. [2023-11-10 11:45:29,308 INFO L231 Difference]: Finished difference. Result has 139 places, 117 transitions, 772 flow [2023-11-10 11:45:29,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=772, PETRI_PLACES=139, PETRI_TRANSITIONS=117} [2023-11-10 11:45:29,308 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 41 predicate places. [2023-11-10 11:45:29,309 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 117 transitions, 772 flow [2023-11-10 11:45:29,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 70.0) internal successors, (630), 9 states have internal predecessors, (630), 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 11:45:29,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:29,309 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] [2023-11-10 11:45:29,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-10 11:45:29,309 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:29,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1668583993, now seen corresponding path program 2 times [2023-11-10 11:45:29,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:29,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828188000] [2023-11-10 11:45:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:30,033 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 11:45:30,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:30,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828188000] [2023-11-10 11:45:30,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828188000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:30,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:30,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-10 11:45:30,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243125280] [2023-11-10 11:45:30,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:30,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-10 11:45:30,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:30,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-10 11:45:30,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-10 11:45:30,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 95 [2023-11-10 11:45:30,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 117 transitions, 772 flow. Second operand has 17 states, 17 states have (on average 63.411764705882355) internal successors, (1078), 17 states have internal predecessors, (1078), 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 11:45:30,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:30,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 95 [2023-11-10 11:45:30,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:30,366 INFO L124 PetriNetUnfolderBase]: 125/487 cut-off events. [2023-11-10 11:45:30,366 INFO L125 PetriNetUnfolderBase]: For 3453/4209 co-relation queries the response was YES. [2023-11-10 11:45:30,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 487 events. 125/487 cut-off events. For 3453/4209 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2790 event pairs, 31 based on Foata normal form. 27/492 useless extension candidates. Maximal degree in co-relation 2095. Up to 107 conditions per place. [2023-11-10 11:45:30,369 INFO L140 encePairwiseOnDemand]: 82/95 looper letters, 30 selfloop transitions, 7 changer transitions 59/148 dead transitions. [2023-11-10 11:45:30,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 148 transitions, 1302 flow [2023-11-10 11:45:30,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-10 11:45:30,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-10 11:45:30,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 922 transitions. [2023-11-10 11:45:30,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6932330827067669 [2023-11-10 11:45:30,370 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 922 transitions. [2023-11-10 11:45:30,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 922 transitions. [2023-11-10 11:45:30,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:30,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 922 transitions. [2023-11-10 11:45:30,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 65.85714285714286) internal successors, (922), 14 states have internal predecessors, (922), 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 11:45:30,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 95.0) internal successors, (1425), 15 states have internal predecessors, (1425), 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 11:45:30,375 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 95.0) internal successors, (1425), 15 states have internal predecessors, (1425), 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 11:45:30,375 INFO L175 Difference]: Start difference. First operand has 139 places, 117 transitions, 772 flow. Second operand 14 states and 922 transitions. [2023-11-10 11:45:30,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 148 transitions, 1302 flow [2023-11-10 11:45:30,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 148 transitions, 1268 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-10 11:45:30,382 INFO L231 Difference]: Finished difference. Result has 146 places, 88 transitions, 418 flow [2023-11-10 11:45:30,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=418, PETRI_PLACES=146, PETRI_TRANSITIONS=88} [2023-11-10 11:45:30,383 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 48 predicate places. [2023-11-10 11:45:30,383 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 88 transitions, 418 flow [2023-11-10 11:45:30,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 63.411764705882355) internal successors, (1078), 17 states have internal predecessors, (1078), 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 11:45:30,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:30,384 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] [2023-11-10 11:45:30,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-10 11:45:30,384 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:30,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:30,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2112725897, now seen corresponding path program 3 times [2023-11-10 11:45:30,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:30,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873597153] [2023-11-10 11:45:30,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:30,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:31,309 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 11:45:31,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:31,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873597153] [2023-11-10 11:45:31,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873597153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:31,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:31,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-10 11:45:31,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681932225] [2023-11-10 11:45:31,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:31,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 11:45:31,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:31,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 11:45:31,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-10 11:45:31,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 95 [2023-11-10 11:45:31,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 88 transitions, 418 flow. Second operand has 12 states, 12 states have (on average 64.91666666666667) internal successors, (779), 12 states have internal predecessors, (779), 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 11:45:31,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:31,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 95 [2023-11-10 11:45:31,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:31,728 INFO L124 PetriNetUnfolderBase]: 45/240 cut-off events. [2023-11-10 11:45:31,728 INFO L125 PetriNetUnfolderBase]: For 1442/1549 co-relation queries the response was YES. [2023-11-10 11:45:31,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 240 events. 45/240 cut-off events. For 1442/1549 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 974 event pairs, 3 based on Foata normal form. 22/257 useless extension candidates. Maximal degree in co-relation 905. Up to 42 conditions per place. [2023-11-10 11:45:31,730 INFO L140 encePairwiseOnDemand]: 84/95 looper letters, 28 selfloop transitions, 11 changer transitions 18/110 dead transitions. [2023-11-10 11:45:31,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 110 transitions, 781 flow [2023-11-10 11:45:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-10 11:45:31,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-10 11:45:31,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 932 transitions. [2023-11-10 11:45:31,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7007518796992481 [2023-11-10 11:45:31,738 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 932 transitions. [2023-11-10 11:45:31,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 932 transitions. [2023-11-10 11:45:31,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:31,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 932 transitions. [2023-11-10 11:45:31,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 66.57142857142857) internal successors, (932), 14 states have internal predecessors, (932), 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 11:45:31,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 95.0) internal successors, (1425), 15 states have internal predecessors, (1425), 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 11:45:31,742 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 95.0) internal successors, (1425), 15 states have internal predecessors, (1425), 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 11:45:31,742 INFO L175 Difference]: Start difference. First operand has 146 places, 88 transitions, 418 flow. Second operand 14 states and 932 transitions. [2023-11-10 11:45:31,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 110 transitions, 781 flow [2023-11-10 11:45:31,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 110 transitions, 609 flow, removed 69 selfloop flow, removed 26 redundant places. [2023-11-10 11:45:31,746 INFO L231 Difference]: Finished difference. Result has 125 places, 88 transitions, 370 flow [2023-11-10 11:45:31,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=370, PETRI_PLACES=125, PETRI_TRANSITIONS=88} [2023-11-10 11:45:31,747 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 27 predicate places. [2023-11-10 11:45:31,747 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 88 transitions, 370 flow [2023-11-10 11:45:31,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.91666666666667) internal successors, (779), 12 states have internal predecessors, (779), 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 11:45:31,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:31,747 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] [2023-11-10 11:45:31,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-10 11:45:31,747 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:31,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:31,748 INFO L85 PathProgramCache]: Analyzing trace with hash 291073385, now seen corresponding path program 1 times [2023-11-10 11:45:31,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:31,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501477774] [2023-11-10 11:45:31,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:31,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:32,491 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 11:45:32,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:32,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501477774] [2023-11-10 11:45:32,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501477774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:32,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:32,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-10 11:45:32,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047079718] [2023-11-10 11:45:32,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:32,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-10 11:45:32,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:32,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-10 11:45:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-10 11:45:32,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 95 [2023-11-10 11:45:32,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 88 transitions, 370 flow. Second operand has 14 states, 14 states have (on average 63.785714285714285) internal successors, (893), 14 states have internal predecessors, (893), 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 11:45:32,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:32,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 95 [2023-11-10 11:45:32,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:32,699 INFO L124 PetriNetUnfolderBase]: 38/237 cut-off events. [2023-11-10 11:45:32,700 INFO L125 PetriNetUnfolderBase]: For 931/1031 co-relation queries the response was YES. [2023-11-10 11:45:32,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 237 events. 38/237 cut-off events. For 931/1031 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1026 event pairs, 2 based on Foata normal form. 20/252 useless extension candidates. Maximal degree in co-relation 822. Up to 48 conditions per place. [2023-11-10 11:45:32,701 INFO L140 encePairwiseOnDemand]: 83/95 looper letters, 29 selfloop transitions, 9 changer transitions 17/106 dead transitions. [2023-11-10 11:45:32,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 106 transitions, 657 flow [2023-11-10 11:45:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 11:45:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 11:45:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 789 transitions. [2023-11-10 11:45:32,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6921052631578948 [2023-11-10 11:45:32,702 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 789 transitions. [2023-11-10 11:45:32,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 789 transitions. [2023-11-10 11:45:32,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:32,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 789 transitions. [2023-11-10 11:45:32,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.75) internal successors, (789), 12 states have internal predecessors, (789), 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 11:45:32,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 95.0) internal successors, (1235), 13 states have internal predecessors, (1235), 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 11:45:32,705 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 95.0) internal successors, (1235), 13 states have internal predecessors, (1235), 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 11:45:32,705 INFO L175 Difference]: Start difference. First operand has 125 places, 88 transitions, 370 flow. Second operand 12 states and 789 transitions. [2023-11-10 11:45:32,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 106 transitions, 657 flow [2023-11-10 11:45:32,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 106 transitions, 615 flow, removed 10 selfloop flow, removed 12 redundant places. [2023-11-10 11:45:32,708 INFO L231 Difference]: Finished difference. Result has 124 places, 86 transitions, 374 flow [2023-11-10 11:45:32,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=374, PETRI_PLACES=124, PETRI_TRANSITIONS=86} [2023-11-10 11:45:32,709 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 26 predicate places. [2023-11-10 11:45:32,709 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 86 transitions, 374 flow [2023-11-10 11:45:32,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 63.785714285714285) internal successors, (893), 14 states have internal predecessors, (893), 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 11:45:32,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:32,709 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] [2023-11-10 11:45:32,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-10 11:45:32,709 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:32,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:32,710 INFO L85 PathProgramCache]: Analyzing trace with hash 489989763, now seen corresponding path program 2 times [2023-11-10 11:45:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:32,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632780992] [2023-11-10 11:45:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:32,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:33,158 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 11:45:33,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:33,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632780992] [2023-11-10 11:45:33,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632780992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:33,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:33,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-10 11:45:33,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330364177] [2023-11-10 11:45:33,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:33,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-10 11:45:33,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:33,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-10 11:45:33,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-10 11:45:33,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 95 [2023-11-10 11:45:33,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 86 transitions, 374 flow. Second operand has 12 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 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 11:45:33,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:33,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 95 [2023-11-10 11:45:33,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:33,493 INFO L124 PetriNetUnfolderBase]: 19/161 cut-off events. [2023-11-10 11:45:33,494 INFO L125 PetriNetUnfolderBase]: For 557/594 co-relation queries the response was YES. [2023-11-10 11:45:33,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 161 events. 19/161 cut-off events. For 557/594 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 441 event pairs, 0 based on Foata normal form. 11/171 useless extension candidates. Maximal degree in co-relation 502. Up to 32 conditions per place. [2023-11-10 11:45:33,495 INFO L140 encePairwiseOnDemand]: 79/95 looper letters, 26 selfloop transitions, 15 changer transitions 17/110 dead transitions. [2023-11-10 11:45:33,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 110 transitions, 716 flow [2023-11-10 11:45:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-10 11:45:33,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-10 11:45:33,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1120 transitions. [2023-11-10 11:45:33,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6934984520123839 [2023-11-10 11:45:33,498 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1120 transitions. [2023-11-10 11:45:33,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1120 transitions. [2023-11-10 11:45:33,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:33,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1120 transitions. [2023-11-10 11:45:33,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 65.88235294117646) internal successors, (1120), 17 states have internal predecessors, (1120), 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 11:45:33,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 95.0) internal successors, (1710), 18 states have internal predecessors, (1710), 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 11:45:33,507 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 95.0) internal successors, (1710), 18 states have internal predecessors, (1710), 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 11:45:33,508 INFO L175 Difference]: Start difference. First operand has 124 places, 86 transitions, 374 flow. Second operand 17 states and 1120 transitions. [2023-11-10 11:45:33,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 110 transitions, 716 flow [2023-11-10 11:45:33,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 110 transitions, 652 flow, removed 24 selfloop flow, removed 10 redundant places. [2023-11-10 11:45:33,511 INFO L231 Difference]: Finished difference. Result has 134 places, 86 transitions, 402 flow [2023-11-10 11:45:33,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=402, PETRI_PLACES=134, PETRI_TRANSITIONS=86} [2023-11-10 11:45:33,511 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 36 predicate places. [2023-11-10 11:45:33,511 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 86 transitions, 402 flow [2023-11-10 11:45:33,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 65.0) internal successors, (780), 12 states have internal predecessors, (780), 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 11:45:33,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:45:33,512 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] [2023-11-10 11:45:33,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-10 11:45:33,512 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-10 11:45:33,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:45:33,512 INFO L85 PathProgramCache]: Analyzing trace with hash 63018969, now seen corresponding path program 3 times [2023-11-10 11:45:33,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:45:33,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878338461] [2023-11-10 11:45:33,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:45:33,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:45:33,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:45:33,879 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 11:45:33,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:45:33,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878338461] [2023-11-10 11:45:33,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878338461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:45:33,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:45:33,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-10 11:45:33,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977466399] [2023-11-10 11:45:33,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:45:33,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-10 11:45:33,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:45:33,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-10 11:45:33,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-10 11:45:33,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 95 [2023-11-10 11:45:33,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 86 transitions, 402 flow. Second operand has 11 states, 11 states have (on average 68.81818181818181) internal successors, (757), 11 states have internal predecessors, (757), 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 11:45:33,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:45:33,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 95 [2023-11-10 11:45:33,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:45:34,025 INFO L124 PetriNetUnfolderBase]: 11/128 cut-off events. [2023-11-10 11:45:34,025 INFO L125 PetriNetUnfolderBase]: For 474/504 co-relation queries the response was YES. [2023-11-10 11:45:34,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 128 events. 11/128 cut-off events. For 474/504 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 255 event pairs, 1 based on Foata normal form. 7/133 useless extension candidates. Maximal degree in co-relation 412. Up to 20 conditions per place. [2023-11-10 11:45:34,026 INFO L140 encePairwiseOnDemand]: 87/95 looper letters, 0 selfloop transitions, 0 changer transitions 88/88 dead transitions. [2023-11-10 11:45:34,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 88 transitions, 508 flow [2023-11-10 11:45:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:45:34,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:45:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 629 transitions. [2023-11-10 11:45:34,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.735672514619883 [2023-11-10 11:45:34,027 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 629 transitions. [2023-11-10 11:45:34,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 629 transitions. [2023-11-10 11:45:34,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:45:34,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 629 transitions. [2023-11-10 11:45:34,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 69.88888888888889) internal successors, (629), 9 states have internal predecessors, (629), 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 11:45:34,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 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 11:45:34,029 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 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 11:45:34,029 INFO L175 Difference]: Start difference. First operand has 134 places, 86 transitions, 402 flow. Second operand 9 states and 629 transitions. [2023-11-10 11:45:34,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 88 transitions, 508 flow [2023-11-10 11:45:34,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 88 transitions, 454 flow, removed 12 selfloop flow, removed 15 redundant places. [2023-11-10 11:45:34,032 INFO L231 Difference]: Finished difference. Result has 117 places, 0 transitions, 0 flow [2023-11-10 11:45:34,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=117, PETRI_TRANSITIONS=0} [2023-11-10 11:45:34,032 INFO L281 CegarLoopForPetriNet]: 98 programPoint places, 19 predicate places. [2023-11-10 11:45:34,032 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 0 transitions, 0 flow [2023-11-10 11:45:34,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 68.81818181818181) internal successors, (757), 11 states have internal predecessors, (757), 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 11:45:34,034 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-10 11:45:34,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-10 11:45:34,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-10 11:45:34,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-10 11:45:34,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-10 11:45:34,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-10 11:45:34,036 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 3, 1, 1, 1] [2023-11-10 11:45:34,039 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 11:45:34,039 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 11:45:34,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:45:34 BasicIcfg [2023-11-10 11:45:34,042 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 11:45:34,043 INFO L158 Benchmark]: Toolchain (without parser) took 16321.88ms. Allocated memory was 203.4MB in the beginning and 541.1MB in the end (delta: 337.6MB). Free memory was 164.3MB in the beginning and 417.5MB in the end (delta: -253.2MB). Peak memory consumption was 86.3MB. Max. memory is 8.0GB. [2023-11-10 11:45:34,043 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 203.4MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:45:34,043 INFO L158 Benchmark]: CACSL2BoogieTranslator took 444.55ms. Allocated memory is still 203.4MB. Free memory was 164.3MB in the beginning and 138.9MB in the end (delta: 25.4MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2023-11-10 11:45:34,043 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.27ms. Allocated memory is still 203.4MB. Free memory was 138.9MB in the beginning and 135.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-10 11:45:34,043 INFO L158 Benchmark]: Boogie Preprocessor took 21.36ms. Allocated memory is still 203.4MB. Free memory was 135.7MB in the beginning and 133.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:45:34,044 INFO L158 Benchmark]: RCFGBuilder took 572.54ms. Allocated memory was 203.4MB in the beginning and 307.2MB in the end (delta: 103.8MB). Free memory was 133.6MB in the beginning and 256.7MB in the end (delta: -123.1MB). Peak memory consumption was 41.0MB. Max. memory is 8.0GB. [2023-11-10 11:45:34,044 INFO L158 Benchmark]: TraceAbstraction took 15242.28ms. Allocated memory was 307.2MB in the beginning and 541.1MB in the end (delta: 233.8MB). Free memory was 255.6MB in the beginning and 417.5MB in the end (delta: -161.8MB). Peak memory consumption was 72.5MB. Max. memory is 8.0GB. [2023-11-10 11:45:34,045 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 203.4MB. Free memory is still 157.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 444.55ms. Allocated memory is still 203.4MB. Free memory was 164.3MB in the beginning and 138.9MB in the end (delta: 25.4MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.27ms. Allocated memory is still 203.4MB. Free memory was 138.9MB in the beginning and 135.7MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.36ms. Allocated memory is still 203.4MB. Free memory was 135.7MB in the beginning and 133.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 572.54ms. Allocated memory was 203.4MB in the beginning and 307.2MB in the end (delta: 103.8MB). Free memory was 133.6MB in the beginning and 256.7MB in the end (delta: -123.1MB). Peak memory consumption was 41.0MB. Max. memory is 8.0GB. * TraceAbstraction took 15242.28ms. Allocated memory was 307.2MB in the beginning and 541.1MB in the end (delta: 233.8MB). Free memory was 255.6MB in the beginning and 417.5MB in the end (delta: -161.8MB). Peak memory consumption was 72.5MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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, 116 locations, 5 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: 15.2s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 703 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 703 mSDsluCounter, 1195 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1005 mSDsCounter, 334 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2654 IncrementalHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 334 mSolverCounterUnsat, 190 mSDtfsCounter, 2654 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 281 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=920occurred in iteration=9, InterpolantAutomatonStates: 197, 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, 8.9s InterpolantComputationTime, 995 NumberOfCodeBlocks, 995 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 980 ConstructedInterpolants, 0 QuantifiedInterpolants, 9157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-10 11:45:34,061 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...