/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:53:59,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:53:59,503 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-SemanticLbe.epf [2023-11-17 15:53:59,544 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:53:59,544 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:53:59,545 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:53:59,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:53:59,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:53:59,546 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:53:59,550 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:53:59,550 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:53:59,551 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:53:59,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:53:59,552 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:53:59,552 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:53:59,552 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:53:59,552 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:53:59,553 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:53:59,553 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:53:59,553 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:53:59,553 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:53:59,554 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:53:59,554 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:53:59,554 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:53:59,555 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:53:59,555 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:53:59,555 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:53:59,555 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:53:59,555 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:53:59,556 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:53:59,557 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:53:59,557 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:53:59,557 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:53:59,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:53:59,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:53:59,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:53:59,822 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:53:59,822 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:53:59,823 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-11-17 15:54:00,970 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:54:01,175 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:54:01,176 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c [2023-11-17 15:54:01,184 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179b4f392/47c867bd312d404c8679be0529d14b22/FLAG74761165a [2023-11-17 15:54:01,200 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179b4f392/47c867bd312d404c8679be0529d14b22 [2023-11-17 15:54:01,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:54:01,205 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:54:01,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:54:01,208 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:54:01,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:54:01,212 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aba7704 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01, skipping insertion in model container [2023-11-17 15:54:01,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,247 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:54:01,416 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3331,3344] [2023-11-17 15:54:01,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:54:01,436 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:54:01,456 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-symm.wvr.c[3331,3344] [2023-11-17 15:54:01,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:54:01,473 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:54:01,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01 WrapperNode [2023-11-17 15:54:01,473 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:54:01,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:54:01,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:54:01,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:54:01,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,486 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,522 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 299 [2023-11-17 15:54:01,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:54:01,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:54:01,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:54:01,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:54:01,531 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,534 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,547 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,548 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,550 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,560 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:54:01,561 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:54:01,561 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:54:01,561 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:54:01,562 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (1/1) ... [2023-11-17 15:54:01,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:54:01,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:01,606 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) [2023-11-17 15:54:01,621 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 [2023-11-17 15:54:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:54:01,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:54:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:54:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:54:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:54:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:54:01,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:54:01,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:54:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:54:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:54:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:54:01,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:54:01,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:54:01,650 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:54:01,782 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:54:01,784 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:54:02,235 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:54:02,248 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:54:02,248 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 15:54:02,249 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:54:02 BoogieIcfgContainer [2023-11-17 15:54:02,249 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:54:02,251 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:54:02,252 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:54:02,254 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:54:02,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:54:01" (1/3) ... [2023-11-17 15:54:02,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5183e646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:54:02, skipping insertion in model container [2023-11-17 15:54:02,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:54:01" (2/3) ... [2023-11-17 15:54:02,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5183e646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:54:02, skipping insertion in model container [2023-11-17 15:54:02,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:54:02" (3/3) ... [2023-11-17 15:54:02,256 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-11-17 15:54:02,271 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:54:02,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:54:02,272 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:54:02,350 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:54:02,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 388 transitions, 790 flow [2023-11-17 15:54:02,532 INFO L124 PetriNetUnfolderBase]: 28/386 cut-off events. [2023-11-17 15:54:02,532 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:54:02,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 386 events. 28/386 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 370 event pairs, 0 based on Foata normal form. 0/357 useless extension candidates. Maximal degree in co-relation 306. Up to 2 conditions per place. [2023-11-17 15:54:02,541 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 388 transitions, 790 flow [2023-11-17 15:54:02,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 356 places, 377 transitions, 766 flow [2023-11-17 15:54:02,556 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:54:02,574 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 356 places, 377 transitions, 766 flow [2023-11-17 15:54:02,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 356 places, 377 transitions, 766 flow [2023-11-17 15:54:02,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 377 transitions, 766 flow [2023-11-17 15:54:02,645 INFO L124 PetriNetUnfolderBase]: 28/377 cut-off events. [2023-11-17 15:54:02,645 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:54:02,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 377 events. 28/377 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 369 event pairs, 0 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 306. Up to 2 conditions per place. [2023-11-17 15:54:02,652 INFO L119 LiptonReduction]: Number of co-enabled transitions 7700 [2023-11-17 15:54:14,082 INFO L134 LiptonReduction]: Checked pairs total: 8114 [2023-11-17 15:54:14,083 INFO L136 LiptonReduction]: Total number of compositions: 449 [2023-11-17 15:54:14,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:54:14,099 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;@30d1613c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:54:14,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 15:54:14,107 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:54:14,107 INFO L124 PetriNetUnfolderBase]: 6/25 cut-off events. [2023-11-17 15:54:14,108 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:54:14,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:14,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:14,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:14,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1412357835, now seen corresponding path program 1 times [2023-11-17 15:54:14,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:14,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415787065] [2023-11-17 15:54:14,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:14,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:54:14,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:14,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415787065] [2023-11-17 15:54:14,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415787065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:14,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:14,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:54:14,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155159132] [2023-11-17 15:54:14,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:14,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:54:14,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:14,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:54:14,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:54:14,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 837 [2023-11-17 15:54:14,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 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) [2023-11-17 15:54:14,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:14,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 837 [2023-11-17 15:54:14,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:14,608 INFO L124 PetriNetUnfolderBase]: 61/120 cut-off events. [2023-11-17 15:54:14,608 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-11-17 15:54:14,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 120 events. 61/120 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 296 event pairs, 33 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 220. Up to 91 conditions per place. [2023-11-17 15:54:14,610 INFO L140 encePairwiseOnDemand]: 833/837 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-17 15:54:14,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-17 15:54:14,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:54:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:54:14,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1100 transitions. [2023-11-17 15:54:14,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43807248108323377 [2023-11-17 15:54:14,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1100 transitions. [2023-11-17 15:54:14,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1100 transitions. [2023-11-17 15:54:14,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:14,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1100 transitions. [2023-11-17 15:54:14,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 366.6666666666667) internal successors, (1100), 3 states have internal predecessors, (1100), 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) [2023-11-17 15:54:14,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 837.0) internal successors, (3348), 4 states have internal predecessors, (3348), 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) [2023-11-17 15:54:14,654 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 837.0) internal successors, (3348), 4 states have internal predecessors, (3348), 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) [2023-11-17 15:54:14,656 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 64 flow. Second operand 3 states and 1100 transitions. [2023-11-17 15:54:14,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-17 15:54:14,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 31 transitions, 129 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:54:14,660 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 74 flow [2023-11-17 15:54:14,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-11-17 15:54:14,664 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 15:54:14,664 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 74 flow [2023-11-17 15:54:14,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 362.0) internal successors, (1086), 3 states have internal predecessors, (1086), 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) [2023-11-17 15:54:14,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:14,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:14,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:54:14,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:14,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:14,666 INFO L85 PathProgramCache]: Analyzing trace with hash -257194936, now seen corresponding path program 1 times [2023-11-17 15:54:14,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:14,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711132116] [2023-11-17 15:54:14,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:14,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:14,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:54:14,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711132116] [2023-11-17 15:54:14,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711132116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:14,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:14,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:54:14,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634506515] [2023-11-17 15:54:14,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:14,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:54:14,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:14,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:54:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:54:14,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 837 [2023-11-17 15:54:14,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 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) [2023-11-17 15:54:14,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:14,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 837 [2023-11-17 15:54:14,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:15,000 INFO L124 PetriNetUnfolderBase]: 61/121 cut-off events. [2023-11-17 15:54:15,000 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-17 15:54:15,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 121 events. 61/121 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 281 event pairs, 45 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 154. Up to 121 conditions per place. [2023-11-17 15:54:15,001 INFO L140 encePairwiseOnDemand]: 834/837 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-11-17 15:54:15,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 132 flow [2023-11-17 15:54:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:54:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:54:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1003 transitions. [2023-11-17 15:54:15,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944245320589405 [2023-11-17 15:54:15,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1003 transitions. [2023-11-17 15:54:15,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1003 transitions. [2023-11-17 15:54:15,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:15,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1003 transitions. [2023-11-17 15:54:15,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 334.3333333333333) internal successors, (1003), 3 states have internal predecessors, (1003), 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) [2023-11-17 15:54:15,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 837.0) internal successors, (3348), 4 states have internal predecessors, (3348), 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) [2023-11-17 15:54:15,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 837.0) internal successors, (3348), 4 states have internal predecessors, (3348), 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) [2023-11-17 15:54:15,015 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 74 flow. Second operand 3 states and 1003 transitions. [2023-11-17 15:54:15,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 132 flow [2023-11-17 15:54:15,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:54:15,017 INFO L231 Difference]: Finished difference. Result has 28 places, 28 transitions, 80 flow [2023-11-17 15:54:15,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=28, PETRI_TRANSITIONS=28} [2023-11-17 15:54:15,018 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 15:54:15,018 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 28 transitions, 80 flow [2023-11-17 15:54:15,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 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) [2023-11-17 15:54:15,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:15,019 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] [2023-11-17 15:54:15,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:54:15,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:15,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:15,020 INFO L85 PathProgramCache]: Analyzing trace with hash -461357633, now seen corresponding path program 1 times [2023-11-17 15:54:15,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:15,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068626403] [2023-11-17 15:54:15,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:15,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:54:15,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:15,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068626403] [2023-11-17 15:54:15,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068626403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:15,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:15,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:54:15,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145549010] [2023-11-17 15:54:15,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:15,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:54:15,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:54:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:54:15,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 837 [2023-11-17 15:54:15,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 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) [2023-11-17 15:54:15,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:15,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 837 [2023-11-17 15:54:15,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:15,237 INFO L124 PetriNetUnfolderBase]: 61/122 cut-off events. [2023-11-17 15:54:15,237 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 15:54:15,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 122 events. 61/122 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 281 event pairs, 45 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 281. Up to 120 conditions per place. [2023-11-17 15:54:15,238 INFO L140 encePairwiseOnDemand]: 832/837 looper letters, 25 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-17 15:54:15,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 140 flow [2023-11-17 15:54:15,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:54:15,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:54:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1329 transitions. [2023-11-17 15:54:15,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39695340501792115 [2023-11-17 15:54:15,243 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1329 transitions. [2023-11-17 15:54:15,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1329 transitions. [2023-11-17 15:54:15,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:15,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1329 transitions. [2023-11-17 15:54:15,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 332.25) internal successors, (1329), 4 states have internal predecessors, (1329), 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) [2023-11-17 15:54:15,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 837.0) internal successors, (4185), 5 states have internal predecessors, (4185), 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) [2023-11-17 15:54:15,255 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 837.0) internal successors, (4185), 5 states have internal predecessors, (4185), 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) [2023-11-17 15:54:15,255 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 80 flow. Second operand 4 states and 1329 transitions. [2023-11-17 15:54:15,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 140 flow [2023-11-17 15:54:15,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 136 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 15:54:15,257 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 94 flow [2023-11-17 15:54:15,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2023-11-17 15:54:15,259 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2023-11-17 15:54:15,259 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 94 flow [2023-11-17 15:54:15,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 330.0) internal successors, (1320), 4 states have internal predecessors, (1320), 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) [2023-11-17 15:54:15,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:15,260 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] [2023-11-17 15:54:15,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:54:15,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:15,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:15,261 INFO L85 PathProgramCache]: Analyzing trace with hash -26705222, now seen corresponding path program 1 times [2023-11-17 15:54:15,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:15,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386045969] [2023-11-17 15:54:15,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:15,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:54:15,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:15,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386045969] [2023-11-17 15:54:15,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386045969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:54:15,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858019043] [2023-11-17 15:54:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:15,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:15,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:54:15,497 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:54:15,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:54:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:15,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:54:15,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:54:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:54:15,680 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:54:15,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858019043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:15,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:54:15,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-17 15:54:15,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106937686] [2023-11-17 15:54:15,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:54:15,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:54:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:54:15,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 837 [2023-11-17 15:54:15,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 332.25) internal successors, (1329), 4 states have internal predecessors, (1329), 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) [2023-11-17 15:54:15,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:15,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 837 [2023-11-17 15:54:15,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:15,754 INFO L124 PetriNetUnfolderBase]: 61/123 cut-off events. [2023-11-17 15:54:15,754 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-17 15:54:15,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 123 events. 61/123 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 281 event pairs, 45 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 281. Up to 122 conditions per place. [2023-11-17 15:54:15,755 INFO L140 encePairwiseOnDemand]: 833/837 looper letters, 27 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2023-11-17 15:54:15,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 156 flow [2023-11-17 15:54:15,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:54:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:54:15,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1336 transitions. [2023-11-17 15:54:15,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39904420549581837 [2023-11-17 15:54:15,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1336 transitions. [2023-11-17 15:54:15,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1336 transitions. [2023-11-17 15:54:15,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:15,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1336 transitions. [2023-11-17 15:54:15,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 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) [2023-11-17 15:54:15,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 837.0) internal successors, (4185), 5 states have internal predecessors, (4185), 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) [2023-11-17 15:54:15,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 837.0) internal successors, (4185), 5 states have internal predecessors, (4185), 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) [2023-11-17 15:54:15,771 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 94 flow. Second operand 4 states and 1336 transitions. [2023-11-17 15:54:15,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 156 flow [2023-11-17 15:54:15,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 30 transitions, 155 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:54:15,773 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 107 flow [2023-11-17 15:54:15,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-11-17 15:54:15,774 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-17 15:54:15,774 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 107 flow [2023-11-17 15:54:15,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.25) internal successors, (1329), 4 states have internal predecessors, (1329), 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) [2023-11-17 15:54:15,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:15,775 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] [2023-11-17 15:54:15,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:54:15,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:54:15,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:15,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:15,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1802572393, now seen corresponding path program 1 times [2023-11-17 15:54:15,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:15,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264851483] [2023-11-17 15:54:15,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:15,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:16,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 15:54:16,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:16,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264851483] [2023-11-17 15:54:16,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264851483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:16,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:16,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:54:16,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230280944] [2023-11-17 15:54:16,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:16,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:54:16,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:54:16,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:54:16,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 837 [2023-11-17 15:54:16,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 332.5) internal successors, (1330), 4 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) [2023-11-17 15:54:16,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:16,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 837 [2023-11-17 15:54:16,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:16,172 INFO L124 PetriNetUnfolderBase]: 61/124 cut-off events. [2023-11-17 15:54:16,173 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 15:54:16,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 124 events. 61/124 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 281 event pairs, 45 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 288. Up to 123 conditions per place. [2023-11-17 15:54:16,174 INFO L140 encePairwiseOnDemand]: 833/837 looper letters, 28 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-11-17 15:54:16,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 171 flow [2023-11-17 15:54:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:54:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:54:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1336 transitions. [2023-11-17 15:54:16,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39904420549581837 [2023-11-17 15:54:16,178 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1336 transitions. [2023-11-17 15:54:16,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1336 transitions. [2023-11-17 15:54:16,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:16,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1336 transitions. [2023-11-17 15:54:16,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 334.0) internal successors, (1336), 4 states have internal predecessors, (1336), 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) [2023-11-17 15:54:16,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 837.0) internal successors, (4185), 5 states have internal predecessors, (4185), 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) [2023-11-17 15:54:16,189 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 837.0) internal successors, (4185), 5 states have internal predecessors, (4185), 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) [2023-11-17 15:54:16,189 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 107 flow. Second operand 4 states and 1336 transitions. [2023-11-17 15:54:16,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 171 flow [2023-11-17 15:54:16,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 31 transitions, 165 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:54:16,191 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 115 flow [2023-11-17 15:54:16,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-17 15:54:16,192 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2023-11-17 15:54:16,192 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 115 flow [2023-11-17 15:54:16,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 332.5) internal successors, (1330), 4 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) [2023-11-17 15:54:16,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:16,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:16,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:54:16,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:16,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:16,194 INFO L85 PathProgramCache]: Analyzing trace with hash -704251839, now seen corresponding path program 1 times [2023-11-17 15:54:16,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:16,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958351124] [2023-11-17 15:54:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:16,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:17,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:17,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958351124] [2023-11-17 15:54:17,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958351124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:17,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:17,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:54:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048349324] [2023-11-17 15:54:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:54:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:54:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:54:17,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 837 [2023-11-17 15:54:17,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 115 flow. Second operand has 5 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 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) [2023-11-17 15:54:17,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:17,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 837 [2023-11-17 15:54:17,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:17,307 INFO L124 PetriNetUnfolderBase]: 61/131 cut-off events. [2023-11-17 15:54:17,307 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-17 15:54:17,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 131 events. 61/131 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 327 event pairs, 21 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 307. Up to 77 conditions per place. [2023-11-17 15:54:17,308 INFO L140 encePairwiseOnDemand]: 833/837 looper letters, 39 selfloop transitions, 1 changer transitions 9/49 dead transitions. [2023-11-17 15:54:17,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 264 flow [2023-11-17 15:54:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:54:17,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:54:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1629 transitions. [2023-11-17 15:54:17,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38924731182795697 [2023-11-17 15:54:17,313 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1629 transitions. [2023-11-17 15:54:17,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1629 transitions. [2023-11-17 15:54:17,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:17,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1629 transitions. [2023-11-17 15:54:17,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.8) internal successors, (1629), 5 states have internal predecessors, (1629), 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) [2023-11-17 15:54:17,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 837.0) internal successors, (5022), 6 states have internal predecessors, (5022), 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) [2023-11-17 15:54:17,325 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 837.0) internal successors, (5022), 6 states have internal predecessors, (5022), 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) [2023-11-17 15:54:17,325 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 115 flow. Second operand 5 states and 1629 transitions. [2023-11-17 15:54:17,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 264 flow [2023-11-17 15:54:17,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 258 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:54:17,329 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 120 flow [2023-11-17 15:54:17,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-11-17 15:54:17,332 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-11-17 15:54:17,332 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 120 flow [2023-11-17 15:54:17,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 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) [2023-11-17 15:54:17,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:17,333 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] [2023-11-17 15:54:17,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:54:17,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:17,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:17,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1302238433, now seen corresponding path program 2 times [2023-11-17 15:54:17,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:17,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213155005] [2023-11-17 15:54:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:17,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:17,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:17,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213155005] [2023-11-17 15:54:17,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213155005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:17,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:17,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:54:17,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790346242] [2023-11-17 15:54:17,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:17,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:54:17,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:17,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:54:17,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:54:17,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 837 [2023-11-17 15:54:17,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 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) [2023-11-17 15:54:17,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:17,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 837 [2023-11-17 15:54:17,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:18,049 INFO L124 PetriNetUnfolderBase]: 63/148 cut-off events. [2023-11-17 15:54:18,050 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-17 15:54:18,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 148 events. 63/148 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 421 event pairs, 40 based on Foata normal form. 1/148 useless extension candidates. Maximal degree in co-relation 394. Up to 113 conditions per place. [2023-11-17 15:54:18,051 INFO L140 encePairwiseOnDemand]: 832/837 looper letters, 37 selfloop transitions, 5 changer transitions 6/48 dead transitions. [2023-11-17 15:54:18,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 268 flow [2023-11-17 15:54:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:54:18,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:54:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1629 transitions. [2023-11-17 15:54:18,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38924731182795697 [2023-11-17 15:54:18,055 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1629 transitions. [2023-11-17 15:54:18,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1629 transitions. [2023-11-17 15:54:18,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:18,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1629 transitions. [2023-11-17 15:54:18,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 325.8) internal successors, (1629), 5 states have internal predecessors, (1629), 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) [2023-11-17 15:54:18,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 837.0) internal successors, (5022), 6 states have internal predecessors, (5022), 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) [2023-11-17 15:54:18,069 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 837.0) internal successors, (5022), 6 states have internal predecessors, (5022), 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) [2023-11-17 15:54:18,070 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 120 flow. Second operand 5 states and 1629 transitions. [2023-11-17 15:54:18,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 268 flow [2023-11-17 15:54:18,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 257 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 15:54:18,072 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 147 flow [2023-11-17 15:54:18,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-11-17 15:54:18,074 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-11-17 15:54:18,074 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 147 flow [2023-11-17 15:54:18,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 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) [2023-11-17 15:54:18,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:18,075 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] [2023-11-17 15:54:18,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:54:18,076 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:18,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash -667978433, now seen corresponding path program 3 times [2023-11-17 15:54:18,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:18,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981772995] [2023-11-17 15:54:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:18,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:18,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:18,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981772995] [2023-11-17 15:54:18,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981772995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:18,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:18,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:54:18,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592841251] [2023-11-17 15:54:18,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:18,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:54:18,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:18,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:54:18,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:54:18,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 837 [2023-11-17 15:54:18,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 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) [2023-11-17 15:54:18,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:18,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 837 [2023-11-17 15:54:18,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:18,953 INFO L124 PetriNetUnfolderBase]: 60/139 cut-off events. [2023-11-17 15:54:18,953 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2023-11-17 15:54:18,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 139 events. 60/139 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 380 event pairs, 42 based on Foata normal form. 1/139 useless extension candidates. Maximal degree in co-relation 419. Up to 121 conditions per place. [2023-11-17 15:54:18,954 INFO L140 encePairwiseOnDemand]: 832/837 looper letters, 30 selfloop transitions, 4 changer transitions 9/43 dead transitions. [2023-11-17 15:54:18,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 264 flow [2023-11-17 15:54:18,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:54:18,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:54:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1623 transitions. [2023-11-17 15:54:18,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878136200716846 [2023-11-17 15:54:18,959 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1623 transitions. [2023-11-17 15:54:18,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1623 transitions. [2023-11-17 15:54:18,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:18,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1623 transitions. [2023-11-17 15:54:18,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.6) internal successors, (1623), 5 states have internal predecessors, (1623), 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) [2023-11-17 15:54:18,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 837.0) internal successors, (5022), 6 states have internal predecessors, (5022), 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) [2023-11-17 15:54:18,970 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 837.0) internal successors, (5022), 6 states have internal predecessors, (5022), 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) [2023-11-17 15:54:18,970 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 147 flow. Second operand 5 states and 1623 transitions. [2023-11-17 15:54:18,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 264 flow [2023-11-17 15:54:18,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 262 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 15:54:18,972 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 161 flow [2023-11-17 15:54:18,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2023-11-17 15:54:18,972 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-11-17 15:54:18,973 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 161 flow [2023-11-17 15:54:18,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 321.6) internal successors, (1608), 5 states have internal predecessors, (1608), 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) [2023-11-17 15:54:18,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:18,973 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] [2023-11-17 15:54:18,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:54:18,974 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:18,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:18,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1182625430, now seen corresponding path program 1 times [2023-11-17 15:54:18,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:18,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427740506] [2023-11-17 15:54:18,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:18,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:19,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:19,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:19,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:19,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427740506] [2023-11-17 15:54:19,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427740506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:19,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:19,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:54:19,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313846443] [2023-11-17 15:54:19,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:19,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:54:19,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:19,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:54:19,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:54:19,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 837 [2023-11-17 15:54:19,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 161 flow. Second operand has 9 states, 9 states have (on average 301.55555555555554) internal successors, (2714), 9 states have internal predecessors, (2714), 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) [2023-11-17 15:54:19,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:19,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 837 [2023-11-17 15:54:19,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:20,020 INFO L124 PetriNetUnfolderBase]: 89/219 cut-off events. [2023-11-17 15:54:20,021 INFO L125 PetriNetUnfolderBase]: For 411/411 co-relation queries the response was YES. [2023-11-17 15:54:20,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 219 events. 89/219 cut-off events. For 411/411 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 894 event pairs, 17 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 697. Up to 97 conditions per place. [2023-11-17 15:54:20,022 INFO L140 encePairwiseOnDemand]: 829/837 looper letters, 46 selfloop transitions, 8 changer transitions 12/66 dead transitions. [2023-11-17 15:54:20,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 66 transitions, 422 flow [2023-11-17 15:54:20,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:54:20,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:54:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2450 transitions. [2023-11-17 15:54:20,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36589008363201914 [2023-11-17 15:54:20,029 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2450 transitions. [2023-11-17 15:54:20,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2450 transitions. [2023-11-17 15:54:20,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:20,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2450 transitions. [2023-11-17 15:54:20,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 306.25) internal successors, (2450), 8 states have internal predecessors, (2450), 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) [2023-11-17 15:54:20,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 837.0) internal successors, (7533), 9 states have internal predecessors, (7533), 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) [2023-11-17 15:54:20,043 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 837.0) internal successors, (7533), 9 states have internal predecessors, (7533), 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) [2023-11-17 15:54:20,043 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 161 flow. Second operand 8 states and 2450 transitions. [2023-11-17 15:54:20,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 66 transitions, 422 flow [2023-11-17 15:54:20,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 66 transitions, 402 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-17 15:54:20,048 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 193 flow [2023-11-17 15:54:20,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=193, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2023-11-17 15:54:20,049 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 25 predicate places. [2023-11-17 15:54:20,049 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 193 flow [2023-11-17 15:54:20,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 301.55555555555554) internal successors, (2714), 9 states have internal predecessors, (2714), 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) [2023-11-17 15:54:20,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:20,050 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] [2023-11-17 15:54:20,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:54:20,050 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:20,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:20,051 INFO L85 PathProgramCache]: Analyzing trace with hash -486724634, now seen corresponding path program 2 times [2023-11-17 15:54:20,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:20,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051392924] [2023-11-17 15:54:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:20,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:20,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:20,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051392924] [2023-11-17 15:54:20,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051392924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:20,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:20,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:54:20,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37827193] [2023-11-17 15:54:20,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:20,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:54:20,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:20,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:54:20,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:54:20,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 837 [2023-11-17 15:54:20,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 315.8333333333333) internal successors, (1895), 6 states have internal predecessors, (1895), 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) [2023-11-17 15:54:20,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:20,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 837 [2023-11-17 15:54:20,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:21,081 INFO L124 PetriNetUnfolderBase]: 92/232 cut-off events. [2023-11-17 15:54:21,081 INFO L125 PetriNetUnfolderBase]: For 535/535 co-relation queries the response was YES. [2023-11-17 15:54:21,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 232 events. 92/232 cut-off events. For 535/535 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 958 event pairs, 33 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 790. Up to 126 conditions per place. [2023-11-17 15:54:21,083 INFO L140 encePairwiseOnDemand]: 832/837 looper letters, 42 selfloop transitions, 2 changer transitions 13/57 dead transitions. [2023-11-17 15:54:21,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 57 transitions, 376 flow [2023-11-17 15:54:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:54:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:54:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1920 transitions. [2023-11-17 15:54:21,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3823178016726404 [2023-11-17 15:54:21,088 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1920 transitions. [2023-11-17 15:54:21,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1920 transitions. [2023-11-17 15:54:21,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:21,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1920 transitions. [2023-11-17 15:54:21,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 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) [2023-11-17 15:54:21,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 837.0) internal successors, (5859), 7 states have internal predecessors, (5859), 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) [2023-11-17 15:54:21,135 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 837.0) internal successors, (5859), 7 states have internal predecessors, (5859), 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) [2023-11-17 15:54:21,135 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 193 flow. Second operand 6 states and 1920 transitions. [2023-11-17 15:54:21,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 57 transitions, 376 flow [2023-11-17 15:54:21,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 57 transitions, 360 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 15:54:21,139 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 195 flow [2023-11-17 15:54:21,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2023-11-17 15:54:21,140 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-11-17 15:54:21,140 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 195 flow [2023-11-17 15:54:21,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 315.8333333333333) internal successors, (1895), 6 states have internal predecessors, (1895), 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) [2023-11-17 15:54:21,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:21,141 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] [2023-11-17 15:54:21,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:54:21,141 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:21,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1327644280, now seen corresponding path program 3 times [2023-11-17 15:54:21,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:21,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513431397] [2023-11-17 15:54:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:21,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:21,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513431397] [2023-11-17 15:54:21,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513431397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:21,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:21,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:54:21,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255856190] [2023-11-17 15:54:21,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:21,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:54:21,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:21,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:54:21,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:54:21,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 837 [2023-11-17 15:54:21,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 195 flow. Second operand has 9 states, 9 states have (on average 301.55555555555554) internal successors, (2714), 9 states have internal predecessors, (2714), 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) [2023-11-17 15:54:21,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:21,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 837 [2023-11-17 15:54:21,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:22,199 INFO L124 PetriNetUnfolderBase]: 86/210 cut-off events. [2023-11-17 15:54:22,199 INFO L125 PetriNetUnfolderBase]: For 880/880 co-relation queries the response was YES. [2023-11-17 15:54:22,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 210 events. 86/210 cut-off events. For 880/880 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 833 event pairs, 23 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 776. Up to 95 conditions per place. [2023-11-17 15:54:22,200 INFO L140 encePairwiseOnDemand]: 829/837 looper letters, 39 selfloop transitions, 9 changer transitions 15/63 dead transitions. [2023-11-17 15:54:22,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 448 flow [2023-11-17 15:54:22,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:54:22,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:54:22,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2447 transitions. [2023-11-17 15:54:22,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365442054958184 [2023-11-17 15:54:22,207 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2447 transitions. [2023-11-17 15:54:22,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2447 transitions. [2023-11-17 15:54:22,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:22,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2447 transitions. [2023-11-17 15:54:22,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 305.875) internal successors, (2447), 8 states have internal predecessors, (2447), 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) [2023-11-17 15:54:22,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 837.0) internal successors, (7533), 9 states have internal predecessors, (7533), 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) [2023-11-17 15:54:22,220 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 837.0) internal successors, (7533), 9 states have internal predecessors, (7533), 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) [2023-11-17 15:54:22,220 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 195 flow. Second operand 8 states and 2447 transitions. [2023-11-17 15:54:22,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 448 flow [2023-11-17 15:54:22,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 63 transitions, 434 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 15:54:22,224 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 212 flow [2023-11-17 15:54:22,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=212, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2023-11-17 15:54:22,224 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-11-17 15:54:22,224 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 212 flow [2023-11-17 15:54:22,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 301.55555555555554) internal successors, (2714), 9 states have internal predecessors, (2714), 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) [2023-11-17 15:54:22,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:22,225 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] [2023-11-17 15:54:22,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:54:22,225 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:22,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:22,226 INFO L85 PathProgramCache]: Analyzing trace with hash -743138914, now seen corresponding path program 4 times [2023-11-17 15:54:22,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:22,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768991112] [2023-11-17 15:54:22,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:22,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:22,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:22,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:22,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768991112] [2023-11-17 15:54:22,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768991112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:22,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:22,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:54:22,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607716826] [2023-11-17 15:54:22,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:22,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:54:22,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:22,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:54:22,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:54:22,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 837 [2023-11-17 15:54:22,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 315.8333333333333) internal successors, (1895), 6 states have internal predecessors, (1895), 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) [2023-11-17 15:54:22,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:22,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 837 [2023-11-17 15:54:22,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:23,113 INFO L124 PetriNetUnfolderBase]: 95/249 cut-off events. [2023-11-17 15:54:23,113 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2023-11-17 15:54:23,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 249 events. 95/249 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1114 event pairs, 37 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 888. Up to 173 conditions per place. [2023-11-17 15:54:23,115 INFO L140 encePairwiseOnDemand]: 831/837 looper letters, 35 selfloop transitions, 6 changer transitions 21/62 dead transitions. [2023-11-17 15:54:23,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 455 flow [2023-11-17 15:54:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:54:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:54:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1923 transitions. [2023-11-17 15:54:23,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38291517323775387 [2023-11-17 15:54:23,120 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1923 transitions. [2023-11-17 15:54:23,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1923 transitions. [2023-11-17 15:54:23,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:23,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1923 transitions. [2023-11-17 15:54:23,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 320.5) internal successors, (1923), 6 states have internal predecessors, (1923), 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) [2023-11-17 15:54:23,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 837.0) internal successors, (5859), 7 states have internal predecessors, (5859), 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) [2023-11-17 15:54:23,133 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 837.0) internal successors, (5859), 7 states have internal predecessors, (5859), 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) [2023-11-17 15:54:23,133 INFO L175 Difference]: Start difference. First operand has 57 places, 37 transitions, 212 flow. Second operand 6 states and 1923 transitions. [2023-11-17 15:54:23,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 455 flow [2023-11-17 15:54:23,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 423 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-17 15:54:23,138 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 214 flow [2023-11-17 15:54:23,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=214, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2023-11-17 15:54:23,139 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-11-17 15:54:23,140 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 214 flow [2023-11-17 15:54:23,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 315.8333333333333) internal successors, (1895), 6 states have internal predecessors, (1895), 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) [2023-11-17 15:54:23,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:23,140 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] [2023-11-17 15:54:23,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:54:23,141 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:23,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:23,141 INFO L85 PathProgramCache]: Analyzing trace with hash 642895232, now seen corresponding path program 5 times [2023-11-17 15:54:23,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:23,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073719239] [2023-11-17 15:54:23,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:23,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:23,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:23,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073719239] [2023-11-17 15:54:23,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073719239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:23,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:23,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:54:23,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493771823] [2023-11-17 15:54:23,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:23,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:54:23,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:23,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:54:23,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:54:23,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 837 [2023-11-17 15:54:23,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 214 flow. Second operand has 9 states, 9 states have (on average 301.55555555555554) internal successors, (2714), 9 states have internal predecessors, (2714), 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) [2023-11-17 15:54:23,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:23,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 837 [2023-11-17 15:54:23,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:24,090 INFO L124 PetriNetUnfolderBase]: 69/174 cut-off events. [2023-11-17 15:54:24,091 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2023-11-17 15:54:24,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678 conditions, 174 events. 69/174 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 636 event pairs, 27 based on Foata normal form. 1/174 useless extension candidates. Maximal degree in co-relation 655. Up to 105 conditions per place. [2023-11-17 15:54:24,092 INFO L140 encePairwiseOnDemand]: 830/837 looper letters, 39 selfloop transitions, 4 changer transitions 12/55 dead transitions. [2023-11-17 15:54:24,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 387 flow [2023-11-17 15:54:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:54:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:54:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2437 transitions. [2023-11-17 15:54:24,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394862604540024 [2023-11-17 15:54:24,098 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2437 transitions. [2023-11-17 15:54:24,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2437 transitions. [2023-11-17 15:54:24,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:24,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2437 transitions. [2023-11-17 15:54:24,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 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) [2023-11-17 15:54:24,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 837.0) internal successors, (7533), 9 states have internal predecessors, (7533), 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) [2023-11-17 15:54:24,110 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 837.0) internal successors, (7533), 9 states have internal predecessors, (7533), 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) [2023-11-17 15:54:24,111 INFO L175 Difference]: Start difference. First operand has 57 places, 37 transitions, 214 flow. Second operand 8 states and 2437 transitions. [2023-11-17 15:54:24,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 387 flow [2023-11-17 15:54:24,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 354 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-11-17 15:54:24,115 INFO L231 Difference]: Finished difference. Result has 57 places, 36 transitions, 194 flow [2023-11-17 15:54:24,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=194, PETRI_PLACES=57, PETRI_TRANSITIONS=36} [2023-11-17 15:54:24,116 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-11-17 15:54:24,116 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 36 transitions, 194 flow [2023-11-17 15:54:24,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 301.55555555555554) internal successors, (2714), 9 states have internal predecessors, (2714), 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) [2023-11-17 15:54:24,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:24,117 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] [2023-11-17 15:54:24,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 15:54:24,118 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:24,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:24,118 INFO L85 PathProgramCache]: Analyzing trace with hash -874888645, now seen corresponding path program 4 times [2023-11-17 15:54:24,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:24,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895523146] [2023-11-17 15:54:24,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:24,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:24,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:24,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:24,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895523146] [2023-11-17 15:54:24,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895523146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:24,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:24,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:54:24,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817163482] [2023-11-17 15:54:24,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:24,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:54:24,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:24,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:54:24,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:54:24,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 837 [2023-11-17 15:54:24,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 36 transitions, 194 flow. Second operand has 10 states, 10 states have (on average 300.3) internal successors, (3003), 10 states have internal predecessors, (3003), 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) [2023-11-17 15:54:24,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:24,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 837 [2023-11-17 15:54:24,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:25,040 INFO L124 PetriNetUnfolderBase]: 47/125 cut-off events. [2023-11-17 15:54:25,041 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2023-11-17 15:54:25,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 125 events. 47/125 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 355 event pairs, 27 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 478. Up to 72 conditions per place. [2023-11-17 15:54:25,042 INFO L140 encePairwiseOnDemand]: 831/837 looper letters, 37 selfloop transitions, 5 changer transitions 8/50 dead transitions. [2023-11-17 15:54:25,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 354 flow [2023-11-17 15:54:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:54:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:54:25,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2129 transitions. [2023-11-17 15:54:25,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3633725891790408 [2023-11-17 15:54:25,047 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2129 transitions. [2023-11-17 15:54:25,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2129 transitions. [2023-11-17 15:54:25,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:25,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2129 transitions. [2023-11-17 15:54:25,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 304.14285714285717) internal successors, (2129), 7 states have internal predecessors, (2129), 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) [2023-11-17 15:54:25,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 837.0) internal successors, (6696), 8 states have internal predecessors, (6696), 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) [2023-11-17 15:54:25,057 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 837.0) internal successors, (6696), 8 states have internal predecessors, (6696), 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) [2023-11-17 15:54:25,058 INFO L175 Difference]: Start difference. First operand has 57 places, 36 transitions, 194 flow. Second operand 7 states and 2129 transitions. [2023-11-17 15:54:25,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 354 flow [2023-11-17 15:54:25,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 318 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-11-17 15:54:25,060 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 168 flow [2023-11-17 15:54:25,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2023-11-17 15:54:25,060 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 27 predicate places. [2023-11-17 15:54:25,060 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 168 flow [2023-11-17 15:54:25,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 300.3) internal successors, (3003), 10 states have internal predecessors, (3003), 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) [2023-11-17 15:54:25,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:25,061 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] [2023-11-17 15:54:25,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 15:54:25,062 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:25,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash -145819518, now seen corresponding path program 6 times [2023-11-17 15:54:25,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:25,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456990363] [2023-11-17 15:54:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:25,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:25,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:25,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:25,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456990363] [2023-11-17 15:54:25,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456990363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:25,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:25,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:54:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342064741] [2023-11-17 15:54:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:25,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:54:25,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:54:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:54:25,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 837 [2023-11-17 15:54:25,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 168 flow. Second operand has 10 states, 10 states have (on average 295.3) internal successors, (2953), 10 states have internal predecessors, (2953), 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) [2023-11-17 15:54:25,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:25,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 837 [2023-11-17 15:54:25,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:26,044 INFO L124 PetriNetUnfolderBase]: 40/112 cut-off events. [2023-11-17 15:54:26,046 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2023-11-17 15:54:26,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 112 events. 40/112 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 313 event pairs, 15 based on Foata normal form. 1/112 useless extension candidates. Maximal degree in co-relation 410. Up to 54 conditions per place. [2023-11-17 15:54:26,046 INFO L140 encePairwiseOnDemand]: 830/837 looper letters, 32 selfloop transitions, 5 changer transitions 9/46 dead transitions. [2023-11-17 15:54:26,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 46 transitions, 300 flow [2023-11-17 15:54:26,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:54:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:54:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2383 transitions. [2023-11-17 15:54:26,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.355884109916368 [2023-11-17 15:54:26,052 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2383 transitions. [2023-11-17 15:54:26,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2383 transitions. [2023-11-17 15:54:26,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:26,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2383 transitions. [2023-11-17 15:54:26,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 297.875) internal successors, (2383), 8 states have internal predecessors, (2383), 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) [2023-11-17 15:54:26,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 837.0) internal successors, (7533), 9 states have internal predecessors, (7533), 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) [2023-11-17 15:54:26,063 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 837.0) internal successors, (7533), 9 states have internal predecessors, (7533), 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) [2023-11-17 15:54:26,063 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 168 flow. Second operand 8 states and 2383 transitions. [2023-11-17 15:54:26,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 46 transitions, 300 flow [2023-11-17 15:54:26,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 46 transitions, 286 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-17 15:54:26,065 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 170 flow [2023-11-17 15:54:26,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=170, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2023-11-17 15:54:26,067 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-11-17 15:54:26,067 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 170 flow [2023-11-17 15:54:26,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 295.3) internal successors, (2953), 10 states have internal predecessors, (2953), 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) [2023-11-17 15:54:26,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:26,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:54:26,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 15:54:26,068 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:26,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:26,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1611147401, now seen corresponding path program 5 times [2023-11-17 15:54:26,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:26,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153813939] [2023-11-17 15:54:26,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:26,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:26,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:26,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153813939] [2023-11-17 15:54:26,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153813939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:26,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:26,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:54:26,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625877598] [2023-11-17 15:54:26,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:26,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:54:26,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:26,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:54:26,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:54:26,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 837 [2023-11-17 15:54:26,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 307.2857142857143) internal successors, (2151), 7 states have internal predecessors, (2151), 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) [2023-11-17 15:54:26,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:26,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 837 [2023-11-17 15:54:26,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:26,868 INFO L124 PetriNetUnfolderBase]: 39/105 cut-off events. [2023-11-17 15:54:26,868 INFO L125 PetriNetUnfolderBase]: For 316/316 co-relation queries the response was YES. [2023-11-17 15:54:26,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 105 events. 39/105 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 269 event pairs, 24 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 391. Up to 80 conditions per place. [2023-11-17 15:54:26,869 INFO L140 encePairwiseOnDemand]: 831/837 looper letters, 27 selfloop transitions, 2 changer transitions 14/43 dead transitions. [2023-11-17 15:54:26,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 43 transitions, 294 flow [2023-11-17 15:54:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:54:26,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:54:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2165 transitions. [2023-11-17 15:54:26,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36951698242020825 [2023-11-17 15:54:26,874 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2165 transitions. [2023-11-17 15:54:26,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2165 transitions. [2023-11-17 15:54:26,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:26,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2165 transitions. [2023-11-17 15:54:26,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 309.2857142857143) internal successors, (2165), 7 states have internal predecessors, (2165), 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) [2023-11-17 15:54:26,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 837.0) internal successors, (6696), 8 states have internal predecessors, (6696), 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) [2023-11-17 15:54:26,885 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 837.0) internal successors, (6696), 8 states have internal predecessors, (6696), 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) [2023-11-17 15:54:26,885 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 170 flow. Second operand 7 states and 2165 transitions. [2023-11-17 15:54:26,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 43 transitions, 294 flow [2023-11-17 15:54:26,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 282 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-17 15:54:26,888 INFO L231 Difference]: Finished difference. Result has 56 places, 29 transitions, 128 flow [2023-11-17 15:54:26,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=29} [2023-11-17 15:54:26,888 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 29 predicate places. [2023-11-17 15:54:26,888 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 29 transitions, 128 flow [2023-11-17 15:54:26,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 307.2857142857143) internal successors, (2151), 7 states have internal predecessors, (2151), 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) [2023-11-17 15:54:26,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:54:26,889 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] [2023-11-17 15:54:26,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 15:54:26,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:54:26,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:54:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash 324824278, now seen corresponding path program 7 times [2023-11-17 15:54:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:54:26,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994763466] [2023-11-17 15:54:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:54:26,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:54:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:54:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:54:27,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:54:27,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994763466] [2023-11-17 15:54:27,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994763466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:54:27,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:54:27,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 15:54:27,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492021787] [2023-11-17 15:54:27,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:54:27,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:54:27,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:54:27,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:54:27,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:54:27,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 837 [2023-11-17 15:54:27,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 29 transitions, 128 flow. Second operand has 10 states, 10 states have (on average 295.3) internal successors, (2953), 10 states have internal predecessors, (2953), 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) [2023-11-17 15:54:27,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:54:27,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 837 [2023-11-17 15:54:27,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:54:27,889 INFO L124 PetriNetUnfolderBase]: 23/63 cut-off events. [2023-11-17 15:54:27,890 INFO L125 PetriNetUnfolderBase]: For 148/148 co-relation queries the response was YES. [2023-11-17 15:54:27,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 63 events. 23/63 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 100 event pairs, 13 based on Foata normal form. 1/63 useless extension candidates. Maximal degree in co-relation 238. Up to 31 conditions per place. [2023-11-17 15:54:27,890 INFO L140 encePairwiseOnDemand]: 830/837 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-11-17 15:54:27,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 34 transitions, 218 flow [2023-11-17 15:54:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:54:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:54:27,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2374 transitions. [2023-11-17 15:54:27,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3545400238948626 [2023-11-17 15:54:27,895 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2374 transitions. [2023-11-17 15:54:27,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2374 transitions. [2023-11-17 15:54:27,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:54:27,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2374 transitions. [2023-11-17 15:54:27,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 296.75) internal successors, (2374), 8 states have internal predecessors, (2374), 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) [2023-11-17 15:54:27,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 837.0) internal successors, (7533), 9 states have internal predecessors, (7533), 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) [2023-11-17 15:54:27,907 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 837.0) internal successors, (7533), 9 states have internal predecessors, (7533), 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) [2023-11-17 15:54:27,907 INFO L175 Difference]: Start difference. First operand has 56 places, 29 transitions, 128 flow. Second operand 8 states and 2374 transitions. [2023-11-17 15:54:27,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 34 transitions, 218 flow [2023-11-17 15:54:27,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 34 transitions, 195 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-11-17 15:54:27,908 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-11-17 15:54:27,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=837, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-11-17 15:54:27,908 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-11-17 15:54:27,909 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-11-17 15:54:27,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 295.3) internal successors, (2953), 10 states have internal predecessors, (2953), 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) [2023-11-17 15:54:27,911 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 15:54:27,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 15:54:27,912 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 15:54:27,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 15:54:27,912 INFO L445 BasicCegarLoop]: Path program histogram: [7, 5, 1, 1, 1, 1, 1] [2023-11-17 15:54:27,914 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:54:27,915 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:54:27,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:54:27 BasicIcfg [2023-11-17 15:54:27,917 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:54:27,917 INFO L158 Benchmark]: Toolchain (without parser) took 26712.64ms. Allocated memory was 177.2MB in the beginning and 589.3MB in the end (delta: 412.1MB). Free memory was 118.5MB in the beginning and 353.0MB in the end (delta: -234.5MB). Peak memory consumption was 179.5MB. Max. memory is 8.0GB. [2023-11-17 15:54:27,918 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 177.2MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:54:27,918 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.62ms. Allocated memory is still 177.2MB. Free memory was 118.3MB in the beginning and 105.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 15:54:27,918 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.00ms. Allocated memory is still 177.2MB. Free memory was 105.9MB in the beginning and 103.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:54:27,918 INFO L158 Benchmark]: Boogie Preprocessor took 36.37ms. Allocated memory is still 177.2MB. Free memory was 103.1MB in the beginning and 100.7MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:54:27,918 INFO L158 Benchmark]: RCFGBuilder took 688.89ms. Allocated memory was 177.2MB in the beginning and 259.0MB in the end (delta: 81.8MB). Free memory was 100.7MB in the beginning and 214.3MB in the end (delta: -113.6MB). Peak memory consumption was 20.3MB. Max. memory is 8.0GB. [2023-11-17 15:54:27,919 INFO L158 Benchmark]: TraceAbstraction took 25665.58ms. Allocated memory was 259.0MB in the beginning and 589.3MB in the end (delta: 330.3MB). Free memory was 213.8MB in the beginning and 353.0MB in the end (delta: -139.2MB). Peak memory consumption was 191.6MB. Max. memory is 8.0GB. [2023-11-17 15:54:27,920 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 177.2MB. Free memory is still 127.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 265.62ms. Allocated memory is still 177.2MB. Free memory was 118.3MB in the beginning and 105.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.00ms. Allocated memory is still 177.2MB. Free memory was 105.9MB in the beginning and 103.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.37ms. Allocated memory is still 177.2MB. Free memory was 103.1MB in the beginning and 100.7MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 688.89ms. Allocated memory was 177.2MB in the beginning and 259.0MB in the end (delta: 81.8MB). Free memory was 100.7MB in the beginning and 214.3MB in the end (delta: -113.6MB). Peak memory consumption was 20.3MB. Max. memory is 8.0GB. * TraceAbstraction took 25665.58ms. Allocated memory was 259.0MB in the beginning and 589.3MB in the end (delta: 330.3MB). Free memory was 213.8MB in the beginning and 353.0MB in the end (delta: -139.2MB). Peak memory consumption was 191.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.5s, 356 PlacesBefore, 27 PlacesAfterwards, 377 TransitionsBefore, 26 TransitionsAfterwards, 7700 CoEnabledTransitionPairs, 9 FixpointIterations, 231 TrivialSequentialCompositions, 106 ConcurrentSequentialCompositions, 57 TrivialYvCompositions, 33 ConcurrentYvCompositions, 22 ChoiceCompositions, 449 TotalNumberOfCompositions, 8114 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6930, independent: 6827, independent conditional: 0, independent unconditional: 6827, dependent: 103, dependent conditional: 0, dependent unconditional: 103, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5610, independent: 5576, independent conditional: 0, independent unconditional: 5576, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5610, independent: 5576, independent conditional: 0, independent unconditional: 5576, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 97, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 6930, independent: 1251, independent conditional: 0, independent unconditional: 1251, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 5610, unknown conditional: 0, unknown unconditional: 5610] , Statistics on independence cache: Total cache size (in pairs): 48, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 93]: 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, 467 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.5s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 484 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 484 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2368 IncrementalHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 0 mSDtfsCounter, 2368 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=12, InterpolantAutomatonStates: 99, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 397 NumberOfCodeBlocks, 397 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 379 ConstructedInterpolants, 0 QuantifiedInterpolants, 4485 SizeOfPredicates, 2 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 18 InterpolantComputations, 17 PerfectInterpolantSequences, 55/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:54:27,944 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...