/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 --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:54:26,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:54:26,682 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 11:54:26,712 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:54:26,713 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:54:26,713 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:54:26,714 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:54:26,714 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:54:26,714 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:54:26,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:54:26,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:54:26,717 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:54:26,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:54:26,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:54:26,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:54:26,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:54:26,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:54:26,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:54:26,719 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:54:26,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:54:26,720 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:54:26,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:54:26,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:54:26,720 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:54:26,721 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:54:26,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:54:26,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:54:26,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:54:26,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:54:26,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:54:26,722 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:54:26,722 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:54:26,722 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:54:26,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:54:26,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:54:26,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:54:26,920 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:54:26,920 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:54:26,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-11-17 11:54:27,943 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:54:28,101 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:54:28,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-11-17 11:54:28,110 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94bc3baf/2f40cbe7a4794b198d966bd1ffb32fb8/FLAGdd24c7a17 [2023-11-17 11:54:28,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94bc3baf/2f40cbe7a4794b198d966bd1ffb32fb8 [2023-11-17 11:54:28,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:54:28,126 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:54:28,127 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:54:28,127 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:54:28,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:54:28,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16df1f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28, skipping insertion in model container [2023-11-17 11:54:28,132 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,158 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:54:28,269 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-name-comparator-subst.wvr.c[4875,4888] [2023-11-17 11:54:28,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:54:28,282 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:54:28,302 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-name-comparator-subst.wvr.c[4875,4888] [2023-11-17 11:54:28,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:54:28,315 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:54:28,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28 WrapperNode [2023-11-17 11:54:28,315 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:54:28,316 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:54:28,316 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:54:28,316 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:54:28,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,326 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,351 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 319 [2023-11-17 11:54:28,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:54:28,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:54:28,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:54:28,352 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:54:28,358 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,362 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,362 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,368 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:54:28,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:54:28,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:54:28,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:54:28,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (1/1) ... [2023-11-17 11:54:28,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:54:28,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:54:28,397 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 11:54:28,402 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 11:54:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:54:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:54:28,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:54:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:54:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 11:54:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 11:54:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 11:54:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 11:54:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 11:54:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 11:54:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:54:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 11:54:28,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:54:28,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:54:28,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:54:28,423 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 11:54:28,500 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:54:28,502 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:54:28,932 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:54:29,223 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:54:29,223 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 11:54:29,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:54:29 BoogieIcfgContainer [2023-11-17 11:54:29,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:54:29,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:54:29,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:54:29,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:54:29,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:54:28" (1/3) ... [2023-11-17 11:54:29,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db7a454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:54:29, skipping insertion in model container [2023-11-17 11:54:29,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:54:28" (2/3) ... [2023-11-17 11:54:29,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db7a454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:54:29, skipping insertion in model container [2023-11-17 11:54:29,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:54:29" (3/3) ... [2023-11-17 11:54:29,231 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-11-17 11:54:29,243 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:54:29,244 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:54:29,244 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:54:29,292 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 11:54:29,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 38 transitions, 97 flow [2023-11-17 11:54:29,354 INFO L124 PetriNetUnfolderBase]: 7/35 cut-off events. [2023-11-17 11:54:29,354 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:54:29,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 7/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 30 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-17 11:54:29,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 38 transitions, 97 flow [2023-11-17 11:54:29,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 34 transitions, 86 flow [2023-11-17 11:54:29,369 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:54:29,384 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 37 places, 34 transitions, 86 flow [2023-11-17 11:54:29,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 37 places, 34 transitions, 86 flow [2023-11-17 11:54:29,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 34 transitions, 86 flow [2023-11-17 11:54:29,401 INFO L124 PetriNetUnfolderBase]: 7/34 cut-off events. [2023-11-17 11:54:29,401 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:54:29,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 7/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 29 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-17 11:54:29,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 396 [2023-11-17 11:54:30,801 INFO L134 LiptonReduction]: Checked pairs total: 399 [2023-11-17 11:54:30,801 INFO L136 LiptonReduction]: Total number of compositions: 16 [2023-11-17 11:54:30,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:54:30,816 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;@7c125565, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:54:30,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:54:30,825 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:54:30,825 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2023-11-17 11:54:30,825 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:54:30,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:30,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:30,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:30,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:30,829 INFO L85 PathProgramCache]: Analyzing trace with hash 727726847, now seen corresponding path program 1 times [2023-11-17 11:54:30,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:30,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516169336] [2023-11-17 11:54:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:30,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:31,183 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 11:54:31,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:31,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516169336] [2023-11-17 11:54:31,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516169336] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:31,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:31,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:54:31,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175230854] [2023-11-17 11:54:31,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:31,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:54:31,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:54:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:54:31,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:31,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 11:54:31,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:31,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:31,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:31,345 INFO L124 PetriNetUnfolderBase]: 221/328 cut-off events. [2023-11-17 11:54:31,345 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-17 11:54:31,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 328 events. 221/328 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 773 event pairs, 138 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 534. Up to 328 conditions per place. [2023-11-17 11:54:31,350 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-17 11:54:31,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 25 transitions, 118 flow [2023-11-17 11:54:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:54:31,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:54:31,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2023-11-17 11:54:31,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29012345679012347 [2023-11-17 11:54:31,359 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 47 transitions. [2023-11-17 11:54:31,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 47 transitions. [2023-11-17 11:54:31,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:31,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 47 transitions. [2023-11-17 11:54:31,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 11:54:31,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 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 11:54:31,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 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 11:54:31,369 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 3 states and 47 transitions. [2023-11-17 11:54:31,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 25 transitions, 118 flow [2023-11-17 11:54:31,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 106 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 11:54:31,373 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 66 flow [2023-11-17 11:54:31,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-11-17 11:54:31,377 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -3 predicate places. [2023-11-17 11:54:31,377 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 66 flow [2023-11-17 11:54:31,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 11:54:31,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:31,377 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 11:54:31,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:54:31,378 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:31,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash 405002933, now seen corresponding path program 1 times [2023-11-17 11:54:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:31,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471987193] [2023-11-17 11:54:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:54:31,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:31,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471987193] [2023-11-17 11:54:31,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471987193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:54:31,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814030564] [2023-11-17 11:54:31,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:31,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:54:31,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:54:31,553 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 11:54:31,565 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 11:54:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:31,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 11:54:31,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:54:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:54:31,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:54:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:54:31,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814030564] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:54:31,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:54:31,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-17 11:54:31,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094200181] [2023-11-17 11:54:31,741 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:54:31,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:31,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:31,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:31,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:31,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:31,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 66 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 11:54:31,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:31,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:31,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:31,828 INFO L124 PetriNetUnfolderBase]: 221/330 cut-off events. [2023-11-17 11:54:31,828 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:54:31,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 684 conditions, 330 events. 221/330 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 777 event pairs, 138 based on Foata normal form. 0/247 useless extension candidates. Maximal degree in co-relation 673. Up to 328 conditions per place. [2023-11-17 11:54:31,830 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-11-17 11:54:31,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 27 transitions, 128 flow [2023-11-17 11:54:31,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:54:31,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:54:31,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2023-11-17 11:54:31,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23703703703703705 [2023-11-17 11:54:31,831 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 64 transitions. [2023-11-17 11:54:31,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 64 transitions. [2023-11-17 11:54:31,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:31,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 64 transitions. [2023-11-17 11:54:31,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 11:54:31,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 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 11:54:31,833 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 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 11:54:31,833 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 66 flow. Second operand 5 states and 64 transitions. [2023-11-17 11:54:31,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 27 transitions, 128 flow [2023-11-17 11:54:31,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 124 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 11:54:31,834 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 88 flow [2023-11-17 11:54:31,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-17 11:54:31,835 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-11-17 11:54:31,835 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 88 flow [2023-11-17 11:54:31,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 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 11:54:31,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:31,835 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:31,842 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 11:54:32,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:54:32,041 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:32,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:32,041 INFO L85 PathProgramCache]: Analyzing trace with hash 133194357, now seen corresponding path program 2 times [2023-11-17 11:54:32,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:32,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57658316] [2023-11-17 11:54:32,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:32,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:32,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:32,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:32,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57658316] [2023-11-17 11:54:32,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57658316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:32,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:32,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:54:32,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172704577] [2023-11-17 11:54:32,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:32,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:54:32,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:32,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:54:32,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:54:32,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:32,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:32,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:32,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:32,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:32,643 INFO L124 PetriNetUnfolderBase]: 391/589 cut-off events. [2023-11-17 11:54:32,643 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-17 11:54:32,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 589 events. 391/589 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1858 event pairs, 138 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1190. Up to 331 conditions per place. [2023-11-17 11:54:32,646 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 59 selfloop transitions, 5 changer transitions 10/74 dead transitions. [2023-11-17 11:54:32,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 74 transitions, 341 flow [2023-11-17 11:54:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2023-11-17 11:54:32,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2023-11-17 11:54:32,647 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 114 transitions. [2023-11-17 11:54:32,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 114 transitions. [2023-11-17 11:54:32,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:32,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 114 transitions. [2023-11-17 11:54:32,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 11:54:32,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:32,649 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:32,649 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 88 flow. Second operand 6 states and 114 transitions. [2023-11-17 11:54:32,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 74 transitions, 341 flow [2023-11-17 11:54:32,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 74 transitions, 331 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 11:54:32,651 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 116 flow [2023-11-17 11:54:32,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2023-11-17 11:54:32,652 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-11-17 11:54:32,652 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 116 flow [2023-11-17 11:54:32,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:32,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:32,652 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:32,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:54:32,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:32,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:32,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1999892925, now seen corresponding path program 3 times [2023-11-17 11:54:32,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:32,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786632233] [2023-11-17 11:54:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:32,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:32,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:32,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786632233] [2023-11-17 11:54:32,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786632233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:32,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:32,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:54:32,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649475866] [2023-11-17 11:54:32,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:32,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:54:32,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:54:32,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:54:32,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:32,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:32,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:32,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:32,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:33,193 INFO L124 PetriNetUnfolderBase]: 598/896 cut-off events. [2023-11-17 11:54:33,193 INFO L125 PetriNetUnfolderBase]: For 435/435 co-relation queries the response was YES. [2023-11-17 11:54:33,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 896 events. 598/896 cut-off events. For 435/435 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3112 event pairs, 238 based on Foata normal form. 1/695 useless extension candidates. Maximal degree in co-relation 2416. Up to 553 conditions per place. [2023-11-17 11:54:33,198 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 61 selfloop transitions, 7 changer transitions 10/78 dead transitions. [2023-11-17 11:54:33,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 78 transitions, 416 flow [2023-11-17 11:54:33,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2023-11-17 11:54:33,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3395061728395062 [2023-11-17 11:54:33,201 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 110 transitions. [2023-11-17 11:54:33,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 110 transitions. [2023-11-17 11:54:33,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:33,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 110 transitions. [2023-11-17 11:54:33,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 11:54:33,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:33,204 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:33,204 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 116 flow. Second operand 6 states and 110 transitions. [2023-11-17 11:54:33,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 78 transitions, 416 flow [2023-11-17 11:54:33,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 395 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-17 11:54:33,208 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 158 flow [2023-11-17 11:54:33,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-11-17 11:54:33,210 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2023-11-17 11:54:33,210 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 158 flow [2023-11-17 11:54:33,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:33,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:33,210 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:33,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:54:33,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:33,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:33,211 INFO L85 PathProgramCache]: Analyzing trace with hash -570202409, now seen corresponding path program 4 times [2023-11-17 11:54:33,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:33,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502173296] [2023-11-17 11:54:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:33,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:33,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:33,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502173296] [2023-11-17 11:54:33,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502173296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:33,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:33,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:33,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756139625] [2023-11-17 11:54:33,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:33,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:33,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:33,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:33,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 158 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:33,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:33,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:33,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:34,205 INFO L124 PetriNetUnfolderBase]: 1142/1742 cut-off events. [2023-11-17 11:54:34,206 INFO L125 PetriNetUnfolderBase]: For 2549/2549 co-relation queries the response was YES. [2023-11-17 11:54:34,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5573 conditions, 1742 events. 1142/1742 cut-off events. For 2549/2549 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 7571 event pairs, 418 based on Foata normal form. 1/1443 useless extension candidates. Maximal degree in co-relation 5543. Up to 875 conditions per place. [2023-11-17 11:54:34,215 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 101 selfloop transitions, 15 changer transitions 3/119 dead transitions. [2023-11-17 11:54:34,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 119 transitions, 786 flow [2023-11-17 11:54:34,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:34,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:34,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2023-11-17 11:54:34,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36243386243386244 [2023-11-17 11:54:34,216 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 137 transitions. [2023-11-17 11:54:34,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 137 transitions. [2023-11-17 11:54:34,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:34,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 137 transitions. [2023-11-17 11:54:34,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 11:54:34,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:34,218 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:34,218 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 158 flow. Second operand 7 states and 137 transitions. [2023-11-17 11:54:34,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 119 transitions, 786 flow [2023-11-17 11:54:34,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 119 transitions, 735 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-11-17 11:54:34,225 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 310 flow [2023-11-17 11:54:34,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-11-17 11:54:34,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2023-11-17 11:54:34,227 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 310 flow [2023-11-17 11:54:34,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:34,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:34,227 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:54:34,227 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:34,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1431631337, now seen corresponding path program 5 times [2023-11-17 11:54:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:34,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398234716] [2023-11-17 11:54:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:34,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:34,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:34,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:34,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398234716] [2023-11-17 11:54:34,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398234716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:34,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:34,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:34,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234542596] [2023-11-17 11:54:34,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:34,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:34,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:34,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:34,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:34,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:34,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 310 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:34,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:34,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:34,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:35,271 INFO L124 PetriNetUnfolderBase]: 1303/2008 cut-off events. [2023-11-17 11:54:35,271 INFO L125 PetriNetUnfolderBase]: For 5071/5071 co-relation queries the response was YES. [2023-11-17 11:54:35,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7611 conditions, 2008 events. 1303/2008 cut-off events. For 5071/5071 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9122 event pairs, 440 based on Foata normal form. 1/1765 useless extension candidates. Maximal degree in co-relation 7577. Up to 953 conditions per place. [2023-11-17 11:54:35,283 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 77 selfloop transitions, 31 changer transitions 3/111 dead transitions. [2023-11-17 11:54:35,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 111 transitions, 822 flow [2023-11-17 11:54:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:35,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2023-11-17 11:54:35,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439153439153439 [2023-11-17 11:54:35,285 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 130 transitions. [2023-11-17 11:54:35,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 130 transitions. [2023-11-17 11:54:35,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:35,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 130 transitions. [2023-11-17 11:54:35,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 11:54:35,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:35,286 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:35,286 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 310 flow. Second operand 7 states and 130 transitions. [2023-11-17 11:54:35,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 111 transitions, 822 flow [2023-11-17 11:54:35,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 111 transitions, 799 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-11-17 11:54:35,292 INFO L231 Difference]: Finished difference. Result has 64 places, 63 transitions, 546 flow [2023-11-17 11:54:35,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=546, PETRI_PLACES=64, PETRI_TRANSITIONS=63} [2023-11-17 11:54:35,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2023-11-17 11:54:35,295 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 63 transitions, 546 flow [2023-11-17 11:54:35,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:35,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:35,295 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:35,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:54:35,295 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:35,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:35,295 INFO L85 PathProgramCache]: Analyzing trace with hash -213461457, now seen corresponding path program 6 times [2023-11-17 11:54:35,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:35,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845093749] [2023-11-17 11:54:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:35,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:35,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:35,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845093749] [2023-11-17 11:54:35,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845093749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:35,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:35,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:54:35,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603309289] [2023-11-17 11:54:35,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:35,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:54:35,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:35,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:54:35,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:54:35,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:35,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:35,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:35,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:35,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:36,023 INFO L124 PetriNetUnfolderBase]: 1307/2039 cut-off events. [2023-11-17 11:54:36,023 INFO L125 PetriNetUnfolderBase]: For 8436/8436 co-relation queries the response was YES. [2023-11-17 11:54:36,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8883 conditions, 2039 events. 1307/2039 cut-off events. For 8436/8436 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9413 event pairs, 454 based on Foata normal form. 3/1796 useless extension candidates. Maximal degree in co-relation 8844. Up to 1093 conditions per place. [2023-11-17 11:54:36,035 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 84 selfloop transitions, 21 changer transitions 12/117 dead transitions. [2023-11-17 11:54:36,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 117 transitions, 1056 flow [2023-11-17 11:54:36,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:36,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2023-11-17 11:54:36,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3487654320987654 [2023-11-17 11:54:36,037 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 113 transitions. [2023-11-17 11:54:36,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 113 transitions. [2023-11-17 11:54:36,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:36,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 113 transitions. [2023-11-17 11:54:36,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 11:54:36,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:36,038 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:36,038 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 546 flow. Second operand 6 states and 113 transitions. [2023-11-17 11:54:36,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 117 transitions, 1056 flow [2023-11-17 11:54:36,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 117 transitions, 986 flow, removed 26 selfloop flow, removed 1 redundant places. [2023-11-17 11:54:36,052 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 642 flow [2023-11-17 11:54:36,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=642, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2023-11-17 11:54:36,052 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2023-11-17 11:54:36,053 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 642 flow [2023-11-17 11:54:36,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:36,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:36,053 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:36,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:54:36,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:36,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:36,053 INFO L85 PathProgramCache]: Analyzing trace with hash -452270423, now seen corresponding path program 7 times [2023-11-17 11:54:36,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:36,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567513951] [2023-11-17 11:54:36,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:36,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:36,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:36,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567513951] [2023-11-17 11:54:36,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567513951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:36,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:36,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:36,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275018623] [2023-11-17 11:54:36,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:36,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:36,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:36,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:36,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:36,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 642 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:36,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:36,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:36,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:36,974 INFO L124 PetriNetUnfolderBase]: 1553/2428 cut-off events. [2023-11-17 11:54:36,974 INFO L125 PetriNetUnfolderBase]: For 14054/14054 co-relation queries the response was YES. [2023-11-17 11:54:36,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11336 conditions, 2428 events. 1553/2428 cut-off events. For 14054/14054 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 11968 event pairs, 419 based on Foata normal form. 2/2172 useless extension candidates. Maximal degree in co-relation 11293. Up to 1040 conditions per place. [2023-11-17 11:54:36,992 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 147 selfloop transitions, 35 changer transitions 3/185 dead transitions. [2023-11-17 11:54:36,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 185 transitions, 1983 flow [2023-11-17 11:54:36,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:36,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2023-11-17 11:54:36,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2023-11-17 11:54:36,993 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 140 transitions. [2023-11-17 11:54:36,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 140 transitions. [2023-11-17 11:54:36,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:36,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 140 transitions. [2023-11-17 11:54:36,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 11:54:36,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:36,995 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:36,995 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 642 flow. Second operand 7 states and 140 transitions. [2023-11-17 11:54:36,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 185 transitions, 1983 flow [2023-11-17 11:54:37,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 185 transitions, 1878 flow, removed 35 selfloop flow, removed 2 redundant places. [2023-11-17 11:54:37,023 INFO L231 Difference]: Finished difference. Result has 80 places, 95 transitions, 1057 flow [2023-11-17 11:54:37,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1057, PETRI_PLACES=80, PETRI_TRANSITIONS=95} [2023-11-17 11:54:37,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2023-11-17 11:54:37,024 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 95 transitions, 1057 flow [2023-11-17 11:54:37,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:37,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:37,025 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:37,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:54:37,025 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:37,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:37,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1934164061, now seen corresponding path program 8 times [2023-11-17 11:54:37,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:37,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680056549] [2023-11-17 11:54:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:37,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:37,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:37,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680056549] [2023-11-17 11:54:37,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680056549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:37,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:37,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:54:37,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100428367] [2023-11-17 11:54:37,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:37,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:54:37,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:54:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:54:37,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:37,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 95 transitions, 1057 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:37,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:37,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:37,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:37,744 INFO L124 PetriNetUnfolderBase]: 1550/2415 cut-off events. [2023-11-17 11:54:37,744 INFO L125 PetriNetUnfolderBase]: For 14197/14197 co-relation queries the response was YES. [2023-11-17 11:54:37,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11897 conditions, 2415 events. 1550/2415 cut-off events. For 14197/14197 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11663 event pairs, 442 based on Foata normal form. 3/2160 useless extension candidates. Maximal degree in co-relation 11850. Up to 1013 conditions per place. [2023-11-17 11:54:37,765 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 84 selfloop transitions, 56 changer transitions 17/157 dead transitions. [2023-11-17 11:54:37,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 157 transitions, 1743 flow [2023-11-17 11:54:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:37,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2023-11-17 11:54:37,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2023-11-17 11:54:37,767 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 117 transitions. [2023-11-17 11:54:37,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 117 transitions. [2023-11-17 11:54:37,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:37,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 117 transitions. [2023-11-17 11:54:37,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 11:54:37,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:37,768 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:37,768 INFO L175 Difference]: Start difference. First operand has 80 places, 95 transitions, 1057 flow. Second operand 6 states and 117 transitions. [2023-11-17 11:54:37,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 157 transitions, 1743 flow [2023-11-17 11:54:37,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 157 transitions, 1711 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-11-17 11:54:37,789 INFO L231 Difference]: Finished difference. Result has 87 places, 97 transitions, 1194 flow [2023-11-17 11:54:37,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1194, PETRI_PLACES=87, PETRI_TRANSITIONS=97} [2023-11-17 11:54:37,790 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2023-11-17 11:54:37,790 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 97 transitions, 1194 flow [2023-11-17 11:54:37,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:37,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:37,790 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:37,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:54:37,790 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:37,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:37,791 INFO L85 PathProgramCache]: Analyzing trace with hash 498927037, now seen corresponding path program 9 times [2023-11-17 11:54:37,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:37,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125908680] [2023-11-17 11:54:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:37,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:38,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:38,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125908680] [2023-11-17 11:54:38,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125908680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:38,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:38,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281786268] [2023-11-17 11:54:38,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:38,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:38,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:38,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:38,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:38,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:38,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 97 transitions, 1194 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:38,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:38,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:38,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:38,676 INFO L124 PetriNetUnfolderBase]: 1505/2317 cut-off events. [2023-11-17 11:54:38,676 INFO L125 PetriNetUnfolderBase]: For 17638/17638 co-relation queries the response was YES. [2023-11-17 11:54:38,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11890 conditions, 2317 events. 1505/2317 cut-off events. For 17638/17638 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11023 event pairs, 404 based on Foata normal form. 1/2062 useless extension candidates. Maximal degree in co-relation 11840. Up to 1011 conditions per place. [2023-11-17 11:54:38,692 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 163 selfloop transitions, 22 changer transitions 2/187 dead transitions. [2023-11-17 11:54:38,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 187 transitions, 2327 flow [2023-11-17 11:54:38,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:38,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2023-11-17 11:54:38,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2023-11-17 11:54:38,693 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2023-11-17 11:54:38,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2023-11-17 11:54:38,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:38,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2023-11-17 11:54:38,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 11:54:38,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:38,694 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:38,694 INFO L175 Difference]: Start difference. First operand has 87 places, 97 transitions, 1194 flow. Second operand 7 states and 134 transitions. [2023-11-17 11:54:38,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 187 transitions, 2327 flow [2023-11-17 11:54:38,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 187 transitions, 2181 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-11-17 11:54:38,721 INFO L231 Difference]: Finished difference. Result has 90 places, 97 transitions, 1155 flow [2023-11-17 11:54:38,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1155, PETRI_PLACES=90, PETRI_TRANSITIONS=97} [2023-11-17 11:54:38,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2023-11-17 11:54:38,721 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 97 transitions, 1155 flow [2023-11-17 11:54:38,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:38,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:38,722 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:38,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:54:38,722 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:38,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:38,722 INFO L85 PathProgramCache]: Analyzing trace with hash -380331591, now seen corresponding path program 10 times [2023-11-17 11:54:38,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:38,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008541282] [2023-11-17 11:54:38,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:38,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:39,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:39,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008541282] [2023-11-17 11:54:39,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008541282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:39,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:39,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:39,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523963344] [2023-11-17 11:54:39,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:39,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:39,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:39,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:39,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:39,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:39,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 97 transitions, 1155 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:39,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:39,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:39,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:39,679 INFO L124 PetriNetUnfolderBase]: 1514/2336 cut-off events. [2023-11-17 11:54:39,679 INFO L125 PetriNetUnfolderBase]: For 14873/14873 co-relation queries the response was YES. [2023-11-17 11:54:39,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11867 conditions, 2336 events. 1514/2336 cut-off events. For 14873/14873 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11019 event pairs, 442 based on Foata normal form. 1/2081 useless extension candidates. Maximal degree in co-relation 11817. Up to 1013 conditions per place. [2023-11-17 11:54:39,693 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 89 selfloop transitions, 61 changer transitions 1/151 dead transitions. [2023-11-17 11:54:39,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 151 transitions, 1756 flow [2023-11-17 11:54:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:39,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2023-11-17 11:54:39,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3306878306878307 [2023-11-17 11:54:39,694 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 125 transitions. [2023-11-17 11:54:39,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 125 transitions. [2023-11-17 11:54:39,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:39,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 125 transitions. [2023-11-17 11:54:39,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 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 11:54:39,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:39,696 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:39,696 INFO L175 Difference]: Start difference. First operand has 90 places, 97 transitions, 1155 flow. Second operand 7 states and 125 transitions. [2023-11-17 11:54:39,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 151 transitions, 1756 flow [2023-11-17 11:54:39,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 151 transitions, 1661 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-17 11:54:39,723 INFO L231 Difference]: Finished difference. Result has 94 places, 102 transitions, 1295 flow [2023-11-17 11:54:39,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1295, PETRI_PLACES=94, PETRI_TRANSITIONS=102} [2023-11-17 11:54:39,724 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2023-11-17 11:54:39,724 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 102 transitions, 1295 flow [2023-11-17 11:54:39,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:39,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:39,724 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:39,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 11:54:39,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:39,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:39,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1540020809, now seen corresponding path program 11 times [2023-11-17 11:54:39,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:39,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585596955] [2023-11-17 11:54:39,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:39,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:39,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:39,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585596955] [2023-11-17 11:54:39,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585596955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:39,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:39,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:54:39,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728056266] [2023-11-17 11:54:39,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:39,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:54:39,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:39,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:54:39,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:54:39,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:39,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 1295 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:39,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:39,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:39,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:40,383 INFO L124 PetriNetUnfolderBase]: 1514/2332 cut-off events. [2023-11-17 11:54:40,383 INFO L125 PetriNetUnfolderBase]: For 17350/17350 co-relation queries the response was YES. [2023-11-17 11:54:40,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12073 conditions, 2332 events. 1514/2332 cut-off events. For 17350/17350 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10927 event pairs, 506 based on Foata normal form. 4/2080 useless extension candidates. Maximal degree in co-relation 12021. Up to 1297 conditions per place. [2023-11-17 11:54:40,399 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 105 selfloop transitions, 40 changer transitions 14/159 dead transitions. [2023-11-17 11:54:40,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 159 transitions, 1996 flow [2023-11-17 11:54:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2023-11-17 11:54:40,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3425925925925926 [2023-11-17 11:54:40,400 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 111 transitions. [2023-11-17 11:54:40,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 111 transitions. [2023-11-17 11:54:40,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:40,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 111 transitions. [2023-11-17 11:54:40,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 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 11:54:40,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:40,402 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:40,402 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 1295 flow. Second operand 6 states and 111 transitions. [2023-11-17 11:54:40,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 159 transitions, 1996 flow [2023-11-17 11:54:40,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 159 transitions, 1856 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 11:54:40,427 INFO L231 Difference]: Finished difference. Result has 98 places, 107 transitions, 1353 flow [2023-11-17 11:54:40,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1163, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1353, PETRI_PLACES=98, PETRI_TRANSITIONS=107} [2023-11-17 11:54:40,428 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2023-11-17 11:54:40,428 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 107 transitions, 1353 flow [2023-11-17 11:54:40,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:40,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:40,428 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:40,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 11:54:40,428 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:40,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:40,428 INFO L85 PathProgramCache]: Analyzing trace with hash 651668925, now seen corresponding path program 12 times [2023-11-17 11:54:40,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:40,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599243001] [2023-11-17 11:54:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:40,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599243001] [2023-11-17 11:54:40,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599243001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:40,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:40,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:40,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104552781] [2023-11-17 11:54:40,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:40,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:40,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:40,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:40,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:40,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:40,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 107 transitions, 1353 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:40,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:40,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:40,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:41,290 INFO L124 PetriNetUnfolderBase]: 1515/2324 cut-off events. [2023-11-17 11:54:41,290 INFO L125 PetriNetUnfolderBase]: For 17782/17782 co-relation queries the response was YES. [2023-11-17 11:54:41,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12243 conditions, 2324 events. 1515/2324 cut-off events. For 17782/17782 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10868 event pairs, 420 based on Foata normal form. 1/2071 useless extension candidates. Maximal degree in co-relation 12188. Up to 1021 conditions per place. [2023-11-17 11:54:41,308 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 124 selfloop transitions, 66 changer transitions 4/194 dead transitions. [2023-11-17 11:54:41,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 194 transitions, 2586 flow [2023-11-17 11:54:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2023-11-17 11:54:41,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2023-11-17 11:54:41,309 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 132 transitions. [2023-11-17 11:54:41,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 132 transitions. [2023-11-17 11:54:41,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:41,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 132 transitions. [2023-11-17 11:54:41,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 11:54:41,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:41,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:41,310 INFO L175 Difference]: Start difference. First operand has 98 places, 107 transitions, 1353 flow. Second operand 7 states and 132 transitions. [2023-11-17 11:54:41,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 194 transitions, 2586 flow [2023-11-17 11:54:41,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 194 transitions, 2428 flow, removed 32 selfloop flow, removed 3 redundant places. [2023-11-17 11:54:41,341 INFO L231 Difference]: Finished difference. Result has 105 places, 128 transitions, 1799 flow [2023-11-17 11:54:41,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1799, PETRI_PLACES=105, PETRI_TRANSITIONS=128} [2023-11-17 11:54:41,342 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2023-11-17 11:54:41,342 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 128 transitions, 1799 flow [2023-11-17 11:54:41,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:41,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:41,342 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:41,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 11:54:41,343 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:41,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:41,343 INFO L85 PathProgramCache]: Analyzing trace with hash 565309799, now seen corresponding path program 13 times [2023-11-17 11:54:41,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:41,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394693579] [2023-11-17 11:54:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:41,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:41,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:41,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394693579] [2023-11-17 11:54:41,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394693579] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:41,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:41,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803081494] [2023-11-17 11:54:41,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:41,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:41,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:41,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:41,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:41,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 128 transitions, 1799 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:41,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:41,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:41,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:42,292 INFO L124 PetriNetUnfolderBase]: 1519/2341 cut-off events. [2023-11-17 11:54:42,292 INFO L125 PetriNetUnfolderBase]: For 19668/19668 co-relation queries the response was YES. [2023-11-17 11:54:42,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12783 conditions, 2341 events. 1519/2341 cut-off events. For 19668/19668 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11097 event pairs, 399 based on Foata normal form. 1/2088 useless extension candidates. Maximal degree in co-relation 12724. Up to 990 conditions per place. [2023-11-17 11:54:42,308 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 151 selfloop transitions, 57 changer transitions 2/210 dead transitions. [2023-11-17 11:54:42,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 210 transitions, 2901 flow [2023-11-17 11:54:42,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:42,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2023-11-17 11:54:42,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2023-11-17 11:54:42,309 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 138 transitions. [2023-11-17 11:54:42,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 138 transitions. [2023-11-17 11:54:42,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:42,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 138 transitions. [2023-11-17 11:54:42,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 11:54:42,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:42,310 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:42,310 INFO L175 Difference]: Start difference. First operand has 105 places, 128 transitions, 1799 flow. Second operand 7 states and 138 transitions. [2023-11-17 11:54:42,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 210 transitions, 2901 flow [2023-11-17 11:54:42,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 210 transitions, 2766 flow, removed 42 selfloop flow, removed 1 redundant places. [2023-11-17 11:54:42,352 INFO L231 Difference]: Finished difference. Result has 114 places, 141 transitions, 2083 flow [2023-11-17 11:54:42,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1664, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2083, PETRI_PLACES=114, PETRI_TRANSITIONS=141} [2023-11-17 11:54:42,353 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2023-11-17 11:54:42,353 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 141 transitions, 2083 flow [2023-11-17 11:54:42,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 11:54:42,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:42,353 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:42,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 11:54:42,354 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:42,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:42,354 INFO L85 PathProgramCache]: Analyzing trace with hash -475762475, now seen corresponding path program 14 times [2023-11-17 11:54:42,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:42,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575324162] [2023-11-17 11:54:42,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:42,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:42,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:42,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575324162] [2023-11-17 11:54:42,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575324162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:42,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:42,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:54:42,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500658850] [2023-11-17 11:54:42,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:42,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:54:42,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:42,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:54:42,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:54:42,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:42,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 141 transitions, 2083 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:42,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:42,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:42,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:43,002 INFO L124 PetriNetUnfolderBase]: 1516/2328 cut-off events. [2023-11-17 11:54:43,003 INFO L125 PetriNetUnfolderBase]: For 19906/19906 co-relation queries the response was YES. [2023-11-17 11:54:43,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12887 conditions, 2328 events. 1516/2328 cut-off events. For 19906/19906 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10916 event pairs, 434 based on Foata normal form. 3/2077 useless extension candidates. Maximal degree in co-relation 12824. Up to 1021 conditions per place. [2023-11-17 11:54:43,020 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 84 selfloop transitions, 86 changer transitions 18/188 dead transitions. [2023-11-17 11:54:43,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 188 transitions, 2755 flow [2023-11-17 11:54:43,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:54:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:54:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2023-11-17 11:54:43,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3487654320987654 [2023-11-17 11:54:43,021 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 113 transitions. [2023-11-17 11:54:43,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 113 transitions. [2023-11-17 11:54:43,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:43,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 113 transitions. [2023-11-17 11:54:43,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 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 11:54:43,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:43,022 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 11:54:43,022 INFO L175 Difference]: Start difference. First operand has 114 places, 141 transitions, 2083 flow. Second operand 6 states and 113 transitions. [2023-11-17 11:54:43,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 188 transitions, 2755 flow [2023-11-17 11:54:43,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 188 transitions, 2679 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-11-17 11:54:43,073 INFO L231 Difference]: Finished difference. Result has 118 places, 138 transitions, 2142 flow [2023-11-17 11:54:43,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2142, PETRI_PLACES=118, PETRI_TRANSITIONS=138} [2023-11-17 11:54:43,074 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2023-11-17 11:54:43,074 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 138 transitions, 2142 flow [2023-11-17 11:54:43,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 11:54:43,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:43,074 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:43,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 11:54:43,074 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:43,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:43,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1512065695, now seen corresponding path program 1 times [2023-11-17 11:54:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:43,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545170754] [2023-11-17 11:54:43,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:43,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:43,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:43,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:43,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545170754] [2023-11-17 11:54:43,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545170754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:54:43,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711332251] [2023-11-17 11:54:43,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:43,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:54:43,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:54:43,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:54:43,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 11:54:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:43,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:54:43,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:54:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:43,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:54:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:43,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711332251] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:54:43,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:54:43,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 11:54:43,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840328443] [2023-11-17 11:54:43,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:54:43,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 11:54:43,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:43,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 11:54:43,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-17 11:54:43,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:43,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 138 transitions, 2142 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:54:43,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:43,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:43,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:44,103 INFO L124 PetriNetUnfolderBase]: 1664/2523 cut-off events. [2023-11-17 11:54:44,103 INFO L125 PetriNetUnfolderBase]: For 21466/21466 co-relation queries the response was YES. [2023-11-17 11:54:44,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13670 conditions, 2523 events. 1664/2523 cut-off events. For 21466/21466 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11838 event pairs, 222 based on Foata normal form. 10/2229 useless extension candidates. Maximal degree in co-relation 13606. Up to 1229 conditions per place. [2023-11-17 11:54:44,121 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 146 selfloop transitions, 56 changer transitions 0/202 dead transitions. [2023-11-17 11:54:44,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 202 transitions, 2839 flow [2023-11-17 11:54:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:44,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2023-11-17 11:54:44,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2023-11-17 11:54:44,123 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2023-11-17 11:54:44,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2023-11-17 11:54:44,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:44,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2023-11-17 11:54:44,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 11:54:44,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:44,124 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:44,124 INFO L175 Difference]: Start difference. First operand has 118 places, 138 transitions, 2142 flow. Second operand 7 states and 134 transitions. [2023-11-17 11:54:44,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 202 transitions, 2839 flow [2023-11-17 11:54:44,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 202 transitions, 2637 flow, removed 13 selfloop flow, removed 7 redundant places. [2023-11-17 11:54:44,172 INFO L231 Difference]: Finished difference. Result has 120 places, 143 transitions, 2176 flow [2023-11-17 11:54:44,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2176, PETRI_PLACES=120, PETRI_TRANSITIONS=143} [2023-11-17 11:54:44,172 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 90 predicate places. [2023-11-17 11:54:44,172 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 143 transitions, 2176 flow [2023-11-17 11:54:44,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:54:44,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:44,172 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:44,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 11:54:44,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-17 11:54:44,377 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:44,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:44,378 INFO L85 PathProgramCache]: Analyzing trace with hash -31193469, now seen corresponding path program 1 times [2023-11-17 11:54:44,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:44,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632439996] [2023-11-17 11:54:44,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:44,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:44,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:44,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632439996] [2023-11-17 11:54:44,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632439996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:44,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:44,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:54:44,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345485457] [2023-11-17 11:54:44,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:44,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:44,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:44,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:44,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:44,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:44,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 143 transitions, 2176 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:54:44,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:44,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:44,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:45,132 INFO L124 PetriNetUnfolderBase]: 1924/2957 cut-off events. [2023-11-17 11:54:45,132 INFO L125 PetriNetUnfolderBase]: For 26803/26803 co-relation queries the response was YES. [2023-11-17 11:54:45,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15711 conditions, 2957 events. 1924/2957 cut-off events. For 26803/26803 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14579 event pairs, 348 based on Foata normal form. 8/2579 useless extension candidates. Maximal degree in co-relation 15646. Up to 987 conditions per place. [2023-11-17 11:54:45,154 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 196 selfloop transitions, 42 changer transitions 0/238 dead transitions. [2023-11-17 11:54:45,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 238 transitions, 3514 flow [2023-11-17 11:54:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:45,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2023-11-17 11:54:45,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2023-11-17 11:54:45,157 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2023-11-17 11:54:45,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2023-11-17 11:54:45,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:45,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2023-11-17 11:54:45,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 11:54:45,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:45,158 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:45,158 INFO L175 Difference]: Start difference. First operand has 120 places, 143 transitions, 2176 flow. Second operand 7 states and 134 transitions. [2023-11-17 11:54:45,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 238 transitions, 3514 flow [2023-11-17 11:54:45,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 238 transitions, 3423 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-17 11:54:45,247 INFO L231 Difference]: Finished difference. Result has 128 places, 149 transitions, 2323 flow [2023-11-17 11:54:45,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2323, PETRI_PLACES=128, PETRI_TRANSITIONS=149} [2023-11-17 11:54:45,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 98 predicate places. [2023-11-17 11:54:45,247 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 149 transitions, 2323 flow [2023-11-17 11:54:45,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:54:45,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:45,248 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:45,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 11:54:45,248 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:45,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:45,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1481017385, now seen corresponding path program 2 times [2023-11-17 11:54:45,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:45,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888999049] [2023-11-17 11:54:45,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:45,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:45,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888999049] [2023-11-17 11:54:45,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888999049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:54:45,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987677176] [2023-11-17 11:54:45,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:54:45,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:54:45,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:54:45,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:54:45,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 11:54:45,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:54:45,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:54:45,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:54:45,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:54:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:45,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:54:45,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:45,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987677176] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:54:45,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:54:45,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-17 11:54:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380777496] [2023-11-17 11:54:45,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:54:45,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 11:54:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 11:54:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-11-17 11:54:45,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:45,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 149 transitions, 2323 flow. Second operand has 17 states, 17 states have (on average 9.117647058823529) internal successors, (155), 17 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 11:54:45,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:45,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:45,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:46,707 INFO L124 PetriNetUnfolderBase]: 2242/3453 cut-off events. [2023-11-17 11:54:46,707 INFO L125 PetriNetUnfolderBase]: For 30829/30829 co-relation queries the response was YES. [2023-11-17 11:54:46,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18469 conditions, 3453 events. 2242/3453 cut-off events. For 30829/30829 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 17620 event pairs, 516 based on Foata normal form. 4/2977 useless extension candidates. Maximal degree in co-relation 18400. Up to 1222 conditions per place. [2023-11-17 11:54:46,728 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 190 selfloop transitions, 48 changer transitions 0/238 dead transitions. [2023-11-17 11:54:46,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 238 transitions, 3423 flow [2023-11-17 11:54:46,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2023-11-17 11:54:46,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2023-11-17 11:54:46,730 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 146 transitions. [2023-11-17 11:54:46,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 146 transitions. [2023-11-17 11:54:46,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:46,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 146 transitions. [2023-11-17 11:54:46,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 11:54:46,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:46,731 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:46,731 INFO L175 Difference]: Start difference. First operand has 128 places, 149 transitions, 2323 flow. Second operand 7 states and 146 transitions. [2023-11-17 11:54:46,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 238 transitions, 3423 flow [2023-11-17 11:54:46,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 238 transitions, 3378 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 11:54:46,795 INFO L231 Difference]: Finished difference. Result has 135 places, 157 transitions, 2522 flow [2023-11-17 11:54:46,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2522, PETRI_PLACES=135, PETRI_TRANSITIONS=157} [2023-11-17 11:54:46,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2023-11-17 11:54:46,796 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 157 transitions, 2522 flow [2023-11-17 11:54:46,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.117647058823529) internal successors, (155), 17 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 11:54:46,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:46,796 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:46,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 11:54:47,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 11:54:47,003 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:47,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:47,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1482318089, now seen corresponding path program 2 times [2023-11-17 11:54:47,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:47,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642752002] [2023-11-17 11:54:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:47,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:47,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:47,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:47,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642752002] [2023-11-17 11:54:47,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642752002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:47,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:47,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:47,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588840455] [2023-11-17 11:54:47,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:47,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:54:47,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:47,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:54:47,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:54:47,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:47,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 157 transitions, 2522 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:54:47,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:47,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:47,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:47,916 INFO L124 PetriNetUnfolderBase]: 2584/3965 cut-off events. [2023-11-17 11:54:47,917 INFO L125 PetriNetUnfolderBase]: For 36844/36844 co-relation queries the response was YES. [2023-11-17 11:54:47,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21416 conditions, 3965 events. 2584/3965 cut-off events. For 36844/36844 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20608 event pairs, 300 based on Foata normal form. 8/3377 useless extension candidates. Maximal degree in co-relation 21344. Up to 1558 conditions per place. [2023-11-17 11:54:47,939 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 190 selfloop transitions, 60 changer transitions 0/250 dead transitions. [2023-11-17 11:54:47,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 250 transitions, 3954 flow [2023-11-17 11:54:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:47,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:47,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2023-11-17 11:54:47,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2023-11-17 11:54:47,940 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 126 transitions. [2023-11-17 11:54:47,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 126 transitions. [2023-11-17 11:54:47,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:47,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 126 transitions. [2023-11-17 11:54:47,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 11:54:47,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:47,944 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:47,944 INFO L175 Difference]: Start difference. First operand has 135 places, 157 transitions, 2522 flow. Second operand 7 states and 126 transitions. [2023-11-17 11:54:47,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 250 transitions, 3954 flow [2023-11-17 11:54:48,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 250 transitions, 3845 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-11-17 11:54:48,031 INFO L231 Difference]: Finished difference. Result has 143 places, 171 transitions, 2867 flow [2023-11-17 11:54:48,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2447, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2867, PETRI_PLACES=143, PETRI_TRANSITIONS=171} [2023-11-17 11:54:48,031 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2023-11-17 11:54:48,032 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 171 transitions, 2867 flow [2023-11-17 11:54:48,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:54:48,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:48,032 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:48,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 11:54:48,032 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:48,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:48,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1361321401, now seen corresponding path program 3 times [2023-11-17 11:54:48,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:48,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477821273] [2023-11-17 11:54:48,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:48,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:48,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:48,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:48,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477821273] [2023-11-17 11:54:48,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477821273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:48,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:48,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:54:48,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496180696] [2023-11-17 11:54:48,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:48,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:48,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:48,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:48,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:48,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:48,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 171 transitions, 2867 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:54:48,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:48,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:48,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:49,018 INFO L124 PetriNetUnfolderBase]: 2748/4241 cut-off events. [2023-11-17 11:54:49,018 INFO L125 PetriNetUnfolderBase]: For 44470/44470 co-relation queries the response was YES. [2023-11-17 11:54:49,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23146 conditions, 4241 events. 2748/4241 cut-off events. For 44470/44470 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22408 event pairs, 638 based on Foata normal form. 10/3583 useless extension candidates. Maximal degree in co-relation 23070. Up to 1492 conditions per place. [2023-11-17 11:54:49,047 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 205 selfloop transitions, 57 changer transitions 0/262 dead transitions. [2023-11-17 11:54:49,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 262 transitions, 4068 flow [2023-11-17 11:54:49,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:49,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:49,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2023-11-17 11:54:49,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2023-11-17 11:54:49,048 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 147 transitions. [2023-11-17 11:54:49,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 147 transitions. [2023-11-17 11:54:49,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:49,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 147 transitions. [2023-11-17 11:54:49,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 11:54:49,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:49,050 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:49,050 INFO L175 Difference]: Start difference. First operand has 143 places, 171 transitions, 2867 flow. Second operand 7 states and 147 transitions. [2023-11-17 11:54:49,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 262 transitions, 4068 flow [2023-11-17 11:54:49,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 262 transitions, 3955 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-17 11:54:49,145 INFO L231 Difference]: Finished difference. Result has 150 places, 175 transitions, 2998 flow [2023-11-17 11:54:49,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2776, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2998, PETRI_PLACES=150, PETRI_TRANSITIONS=175} [2023-11-17 11:54:49,146 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2023-11-17 11:54:49,146 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 175 transitions, 2998 flow [2023-11-17 11:54:49,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:54:49,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:49,146 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:49,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-17 11:54:49,146 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:49,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:49,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1610875599, now seen corresponding path program 3 times [2023-11-17 11:54:49,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:49,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082289782] [2023-11-17 11:54:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:49,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:49,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:49,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:49,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082289782] [2023-11-17 11:54:49,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082289782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:49,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:49,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:54:49,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754978357] [2023-11-17 11:54:49,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:49,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:49,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:49,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:49,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:49,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:49,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 175 transitions, 2998 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:54:49,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:49,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:49,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:50,423 INFO L124 PetriNetUnfolderBase]: 3998/6219 cut-off events. [2023-11-17 11:54:50,423 INFO L125 PetriNetUnfolderBase]: For 65414/65414 co-relation queries the response was YES. [2023-11-17 11:54:50,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33197 conditions, 6219 events. 3998/6219 cut-off events. For 65414/65414 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 35801 event pairs, 498 based on Foata normal form. 8/5161 useless extension candidates. Maximal degree in co-relation 33118. Up to 3101 conditions per place. [2023-11-17 11:54:50,464 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 246 selfloop transitions, 60 changer transitions 0/306 dead transitions. [2023-11-17 11:54:50,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 306 transitions, 5486 flow [2023-11-17 11:54:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:50,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2023-11-17 11:54:50,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3253968253968254 [2023-11-17 11:54:50,465 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 123 transitions. [2023-11-17 11:54:50,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 123 transitions. [2023-11-17 11:54:50,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:50,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 123 transitions. [2023-11-17 11:54:50,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 11:54:50,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:50,466 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:50,466 INFO L175 Difference]: Start difference. First operand has 150 places, 175 transitions, 2998 flow. Second operand 7 states and 123 transitions. [2023-11-17 11:54:50,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 306 transitions, 5486 flow [2023-11-17 11:54:50,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 306 transitions, 5298 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-11-17 11:54:50,623 INFO L231 Difference]: Finished difference. Result has 158 places, 199 transitions, 3579 flow [2023-11-17 11:54:50,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2894, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3579, PETRI_PLACES=158, PETRI_TRANSITIONS=199} [2023-11-17 11:54:50,623 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2023-11-17 11:54:50,623 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 199 transitions, 3579 flow [2023-11-17 11:54:50,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:54:50,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:50,624 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:50,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-17 11:54:50,624 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:50,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:50,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1955521271, now seen corresponding path program 4 times [2023-11-17 11:54:50,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:50,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982934620] [2023-11-17 11:54:50,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:50,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:50,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:50,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982934620] [2023-11-17 11:54:50,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982934620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:50,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:50,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:50,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377853375] [2023-11-17 11:54:50,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:50,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:54:50,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:50,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:54:50,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:54:50,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:50,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 199 transitions, 3579 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:54:50,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:50,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:50,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:51,800 INFO L124 PetriNetUnfolderBase]: 3992/6213 cut-off events. [2023-11-17 11:54:51,800 INFO L125 PetriNetUnfolderBase]: For 73198/73198 co-relation queries the response was YES. [2023-11-17 11:54:51,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34930 conditions, 6213 events. 3992/6213 cut-off events. For 73198/73198 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 35589 event pairs, 738 based on Foata normal form. 6/5707 useless extension candidates. Maximal degree in co-relation 34846. Up to 3798 conditions per place. [2023-11-17 11:54:51,846 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 205 selfloop transitions, 69 changer transitions 8/282 dead transitions. [2023-11-17 11:54:51,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 282 transitions, 4847 flow [2023-11-17 11:54:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2023-11-17 11:54:51,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34656084656084657 [2023-11-17 11:54:51,847 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 131 transitions. [2023-11-17 11:54:51,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 131 transitions. [2023-11-17 11:54:51,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:51,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 131 transitions. [2023-11-17 11:54:51,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 11:54:51,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:51,848 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:51,848 INFO L175 Difference]: Start difference. First operand has 158 places, 199 transitions, 3579 flow. Second operand 7 states and 131 transitions. [2023-11-17 11:54:51,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 282 transitions, 4847 flow [2023-11-17 11:54:52,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 282 transitions, 4772 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-11-17 11:54:52,048 INFO L231 Difference]: Finished difference. Result has 164 places, 199 transitions, 3643 flow [2023-11-17 11:54:52,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3482, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3643, PETRI_PLACES=164, PETRI_TRANSITIONS=199} [2023-11-17 11:54:52,048 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2023-11-17 11:54:52,048 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 199 transitions, 3643 flow [2023-11-17 11:54:52,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:54:52,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:52,049 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:52,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-17 11:54:52,049 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:52,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:52,049 INFO L85 PathProgramCache]: Analyzing trace with hash 280101809, now seen corresponding path program 5 times [2023-11-17 11:54:52,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:52,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131147338] [2023-11-17 11:54:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:52,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131147338] [2023-11-17 11:54:52,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131147338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:52,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:52,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:52,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262895078] [2023-11-17 11:54:52,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:52,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:54:52,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:54:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:54:52,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:52,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 199 transitions, 3643 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:54:52,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:52,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:52,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:53,440 INFO L124 PetriNetUnfolderBase]: 4207/6570 cut-off events. [2023-11-17 11:54:53,440 INFO L125 PetriNetUnfolderBase]: For 78137/78137 co-relation queries the response was YES. [2023-11-17 11:54:53,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37043 conditions, 6570 events. 4207/6570 cut-off events. For 78137/78137 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 38321 event pairs, 920 based on Foata normal form. 8/6034 useless extension candidates. Maximal degree in co-relation 36958. Up to 2886 conditions per place. [2023-11-17 11:54:53,488 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 236 selfloop transitions, 91 changer transitions 0/327 dead transitions. [2023-11-17 11:54:53,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 327 transitions, 5955 flow [2023-11-17 11:54:53,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:53,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2023-11-17 11:54:53,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2023-11-17 11:54:53,489 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2023-11-17 11:54:53,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2023-11-17 11:54:53,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:53,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2023-11-17 11:54:53,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 11:54:53,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:53,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:53,490 INFO L175 Difference]: Start difference. First operand has 164 places, 199 transitions, 3643 flow. Second operand 7 states and 139 transitions. [2023-11-17 11:54:53,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 327 transitions, 5955 flow [2023-11-17 11:54:53,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 327 transitions, 5749 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-17 11:54:53,683 INFO L231 Difference]: Finished difference. Result has 171 places, 225 transitions, 4307 flow [2023-11-17 11:54:53,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3508, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4307, PETRI_PLACES=171, PETRI_TRANSITIONS=225} [2023-11-17 11:54:53,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2023-11-17 11:54:53,683 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 225 transitions, 4307 flow [2023-11-17 11:54:53,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:54:53,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:53,684 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:53,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-17 11:54:53,684 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:53,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1704943943, now seen corresponding path program 4 times [2023-11-17 11:54:53,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:53,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624563592] [2023-11-17 11:54:53,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:53,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:53,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:53,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624563592] [2023-11-17 11:54:53,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624563592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:53,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:53,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:54:53,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847716210] [2023-11-17 11:54:53,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:53,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:53,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:53,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:53,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:53,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:53,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 225 transitions, 4307 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:54:53,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:53,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:53,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:55,267 INFO L124 PetriNetUnfolderBase]: 4563/7170 cut-off events. [2023-11-17 11:54:55,267 INFO L125 PetriNetUnfolderBase]: For 82358/82358 co-relation queries the response was YES. [2023-11-17 11:54:55,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39678 conditions, 7170 events. 4563/7170 cut-off events. For 82358/82358 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 42915 event pairs, 846 based on Foata normal form. 10/6546 useless extension candidates. Maximal degree in co-relation 39588. Up to 4014 conditions per place. [2023-11-17 11:54:55,319 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 233 selfloop transitions, 85 changer transitions 0/318 dead transitions. [2023-11-17 11:54:55,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 318 transitions, 5749 flow [2023-11-17 11:54:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:55,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:55,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2023-11-17 11:54:55,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2023-11-17 11:54:55,320 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 140 transitions. [2023-11-17 11:54:55,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 140 transitions. [2023-11-17 11:54:55,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:55,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 140 transitions. [2023-11-17 11:54:55,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 11:54:55,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:55,321 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:55,321 INFO L175 Difference]: Start difference. First operand has 171 places, 225 transitions, 4307 flow. Second operand 7 states and 140 transitions. [2023-11-17 11:54:55,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 318 transitions, 5749 flow [2023-11-17 11:54:55,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 318 transitions, 5622 flow, removed 43 selfloop flow, removed 1 redundant places. [2023-11-17 11:54:55,563 INFO L231 Difference]: Finished difference. Result has 178 places, 227 transitions, 4437 flow [2023-11-17 11:54:55,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4204, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4437, PETRI_PLACES=178, PETRI_TRANSITIONS=227} [2023-11-17 11:54:55,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2023-11-17 11:54:55,564 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 227 transitions, 4437 flow [2023-11-17 11:54:55,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:54:55,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:55,564 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:55,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-17 11:54:55,564 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:55,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1528739113, now seen corresponding path program 6 times [2023-11-17 11:54:55,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:55,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693693623] [2023-11-17 11:54:55,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:55,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:55,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693693623] [2023-11-17 11:54:55,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693693623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:55,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:55,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:54:55,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297941269] [2023-11-17 11:54:55,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:55,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:54:55,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:55,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:54:55,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:54:55,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:55,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 227 transitions, 4437 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:54:55,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:55,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:55,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:57,159 INFO L124 PetriNetUnfolderBase]: 4843/7636 cut-off events. [2023-11-17 11:54:57,160 INFO L125 PetriNetUnfolderBase]: For 91028/91028 co-relation queries the response was YES. [2023-11-17 11:54:57,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41882 conditions, 7636 events. 4843/7636 cut-off events. For 91028/91028 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 46653 event pairs, 960 based on Foata normal form. 8/6970 useless extension candidates. Maximal degree in co-relation 41790. Up to 3180 conditions per place. [2023-11-17 11:54:57,216 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 275 selfloop transitions, 84 changer transitions 0/359 dead transitions. [2023-11-17 11:54:57,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 359 transitions, 7001 flow [2023-11-17 11:54:57,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:57,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:57,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2023-11-17 11:54:57,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36243386243386244 [2023-11-17 11:54:57,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 137 transitions. [2023-11-17 11:54:57,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 137 transitions. [2023-11-17 11:54:57,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:57,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 137 transitions. [2023-11-17 11:54:57,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 11:54:57,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:57,218 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:57,218 INFO L175 Difference]: Start difference. First operand has 178 places, 227 transitions, 4437 flow. Second operand 7 states and 137 transitions. [2023-11-17 11:54:57,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 359 transitions, 7001 flow [2023-11-17 11:54:57,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 359 transitions, 6787 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 11:54:57,447 INFO L231 Difference]: Finished difference. Result has 184 places, 244 transitions, 4911 flow [2023-11-17 11:54:57,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4267, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4911, PETRI_PLACES=184, PETRI_TRANSITIONS=244} [2023-11-17 11:54:57,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2023-11-17 11:54:57,448 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 244 transitions, 4911 flow [2023-11-17 11:54:57,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:54:57,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:57,448 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:57,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-17 11:54:57,448 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:57,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1641134879, now seen corresponding path program 5 times [2023-11-17 11:54:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:57,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045818781] [2023-11-17 11:54:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:57,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:57,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045818781] [2023-11-17 11:54:57,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045818781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:57,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:57,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:57,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168154867] [2023-11-17 11:54:57,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:57,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:54:57,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:57,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:54:57,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:54:57,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:57,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 244 transitions, 4911 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:54:57,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:57,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:57,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:59,093 INFO L124 PetriNetUnfolderBase]: 4881/7706 cut-off events. [2023-11-17 11:54:59,093 INFO L125 PetriNetUnfolderBase]: For 96096/96096 co-relation queries the response was YES. [2023-11-17 11:54:59,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43276 conditions, 7706 events. 4881/7706 cut-off events. For 96096/96096 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 46966 event pairs, 974 based on Foata normal form. 10/7030 useless extension candidates. Maximal degree in co-relation 43180. Up to 4352 conditions per place. [2023-11-17 11:54:59,160 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 239 selfloop transitions, 89 changer transitions 0/328 dead transitions. [2023-11-17 11:54:59,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 328 transitions, 6225 flow [2023-11-17 11:54:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:54:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:54:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2023-11-17 11:54:59,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36243386243386244 [2023-11-17 11:54:59,161 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 137 transitions. [2023-11-17 11:54:59,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 137 transitions. [2023-11-17 11:54:59,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:54:59,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 137 transitions. [2023-11-17 11:54:59,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 11:54:59,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:59,162 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:54:59,162 INFO L175 Difference]: Start difference. First operand has 184 places, 244 transitions, 4911 flow. Second operand 7 states and 137 transitions. [2023-11-17 11:54:59,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 328 transitions, 6225 flow [2023-11-17 11:54:59,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 328 transitions, 6124 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-11-17 11:54:59,479 INFO L231 Difference]: Finished difference. Result has 191 places, 247 transitions, 5061 flow [2023-11-17 11:54:59,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4818, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5061, PETRI_PLACES=191, PETRI_TRANSITIONS=247} [2023-11-17 11:54:59,479 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2023-11-17 11:54:59,479 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 247 transitions, 5061 flow [2023-11-17 11:54:59,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:54:59,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:54:59,479 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:54:59,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-17 11:54:59,480 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:54:59,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:54:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash -781236641, now seen corresponding path program 7 times [2023-11-17 11:54:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:54:59,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353709319] [2023-11-17 11:54:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:54:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:54:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:54:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:54:59,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:54:59,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353709319] [2023-11-17 11:54:59,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353709319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:54:59,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:54:59,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:54:59,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28805774] [2023-11-17 11:54:59,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:54:59,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:54:59,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:59,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:54:59,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:54:59,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:54:59,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 247 transitions, 5061 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:54:59,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:59,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:54:59,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:01,315 INFO L124 PetriNetUnfolderBase]: 4905/7752 cut-off events. [2023-11-17 11:55:01,315 INFO L125 PetriNetUnfolderBase]: For 103866/103866 co-relation queries the response was YES. [2023-11-17 11:55:01,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44624 conditions, 7752 events. 4905/7752 cut-off events. For 103866/103866 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 47350 event pairs, 1112 based on Foata normal form. 8/7690 useless extension candidates. Maximal degree in co-relation 44526. Up to 5238 conditions per place. [2023-11-17 11:55:01,388 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 226 selfloop transitions, 96 changer transitions 0/322 dead transitions. [2023-11-17 11:55:01,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 322 transitions, 6276 flow [2023-11-17 11:55:01,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:01,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:01,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2023-11-17 11:55:01,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36243386243386244 [2023-11-17 11:55:01,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 137 transitions. [2023-11-17 11:55:01,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 137 transitions. [2023-11-17 11:55:01,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:01,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 137 transitions. [2023-11-17 11:55:01,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 11:55:01,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:01,390 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:01,390 INFO L175 Difference]: Start difference. First operand has 191 places, 247 transitions, 5061 flow. Second operand 7 states and 137 transitions. [2023-11-17 11:55:01,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 322 transitions, 6276 flow [2023-11-17 11:55:01,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 322 transitions, 6124 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 11:55:01,730 INFO L231 Difference]: Finished difference. Result has 195 places, 248 transitions, 5143 flow [2023-11-17 11:55:01,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4909, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5143, PETRI_PLACES=195, PETRI_TRANSITIONS=248} [2023-11-17 11:55:01,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2023-11-17 11:55:01,730 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 248 transitions, 5143 flow [2023-11-17 11:55:01,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:01,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:01,731 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:01,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-17 11:55:01,731 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:01,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash -102651847, now seen corresponding path program 6 times [2023-11-17 11:55:01,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:01,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846085788] [2023-11-17 11:55:01,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:01,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:01,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:01,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846085788] [2023-11-17 11:55:01,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846085788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:01,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:01,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:01,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257065343] [2023-11-17 11:55:01,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:01,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:01,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:01,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:01,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:01,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 248 transitions, 5143 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:01,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:01,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:01,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:03,298 INFO L124 PetriNetUnfolderBase]: 4895/7730 cut-off events. [2023-11-17 11:55:03,299 INFO L125 PetriNetUnfolderBase]: For 104496/104496 co-relation queries the response was YES. [2023-11-17 11:55:03,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44805 conditions, 7730 events. 4895/7730 cut-off events. For 104496/104496 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 47097 event pairs, 988 based on Foata normal form. 4/7664 useless extension candidates. Maximal degree in co-relation 44706. Up to 4352 conditions per place. [2023-11-17 11:55:03,373 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 233 selfloop transitions, 86 changer transitions 4/323 dead transitions. [2023-11-17 11:55:03,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 323 transitions, 6361 flow [2023-11-17 11:55:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:03,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2023-11-17 11:55:03,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439153439153439 [2023-11-17 11:55:03,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 130 transitions. [2023-11-17 11:55:03,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 130 transitions. [2023-11-17 11:55:03,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:03,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 130 transitions. [2023-11-17 11:55:03,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 11:55:03,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:03,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:03,375 INFO L175 Difference]: Start difference. First operand has 195 places, 248 transitions, 5143 flow. Second operand 7 states and 130 transitions. [2023-11-17 11:55:03,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 323 transitions, 6361 flow [2023-11-17 11:55:03,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 323 transitions, 6159 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-17 11:55:03,727 INFO L231 Difference]: Finished difference. Result has 196 places, 246 transitions, 5063 flow [2023-11-17 11:55:03,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4907, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5063, PETRI_PLACES=196, PETRI_TRANSITIONS=246} [2023-11-17 11:55:03,728 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2023-11-17 11:55:03,728 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 246 transitions, 5063 flow [2023-11-17 11:55:03,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:03,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:03,728 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:03,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-17 11:55:03,728 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:03,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:03,728 INFO L85 PathProgramCache]: Analyzing trace with hash -781831287, now seen corresponding path program 8 times [2023-11-17 11:55:03,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:03,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383676952] [2023-11-17 11:55:03,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:03,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:03,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:03,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383676952] [2023-11-17 11:55:03,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383676952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:03,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:03,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:03,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110162653] [2023-11-17 11:55:03,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:03,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:03,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:03,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:03,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:03,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:03,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 246 transitions, 5063 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:03,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:03,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:03,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:05,244 INFO L124 PetriNetUnfolderBase]: 4876/7693 cut-off events. [2023-11-17 11:55:05,245 INFO L125 PetriNetUnfolderBase]: For 103152/103152 co-relation queries the response was YES. [2023-11-17 11:55:05,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44411 conditions, 7693 events. 4876/7693 cut-off events. For 103152/103152 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 46790 event pairs, 1108 based on Foata normal form. 6/7629 useless extension candidates. Maximal degree in co-relation 44312. Up to 5216 conditions per place. [2023-11-17 11:55:05,316 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 216 selfloop transitions, 93 changer transitions 6/315 dead transitions. [2023-11-17 11:55:05,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 315 transitions, 6181 flow [2023-11-17 11:55:05,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:05,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2023-11-17 11:55:05,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439153439153439 [2023-11-17 11:55:05,317 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 130 transitions. [2023-11-17 11:55:05,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 130 transitions. [2023-11-17 11:55:05,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:05,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 130 transitions. [2023-11-17 11:55:05,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 11:55:05,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:05,318 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:05,318 INFO L175 Difference]: Start difference. First operand has 196 places, 246 transitions, 5063 flow. Second operand 7 states and 130 transitions. [2023-11-17 11:55:05,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 315 transitions, 6181 flow [2023-11-17 11:55:05,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 315 transitions, 6004 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-11-17 11:55:05,644 INFO L231 Difference]: Finished difference. Result has 193 places, 244 transitions, 5020 flow [2023-11-17 11:55:05,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4850, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5020, PETRI_PLACES=193, PETRI_TRANSITIONS=244} [2023-11-17 11:55:05,645 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2023-11-17 11:55:05,645 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 244 transitions, 5020 flow [2023-11-17 11:55:05,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:05,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:05,645 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:05,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-17 11:55:05,645 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:05,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:05,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1427899219, now seen corresponding path program 9 times [2023-11-17 11:55:05,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:05,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006713007] [2023-11-17 11:55:05,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:05,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:05,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:05,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006713007] [2023-11-17 11:55:05,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006713007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:05,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:05,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:05,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573590507] [2023-11-17 11:55:05,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:05,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:05,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:05,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:05,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:05,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:05,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 244 transitions, 5020 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:05,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:05,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:05,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:07,207 INFO L124 PetriNetUnfolderBase]: 4879/7698 cut-off events. [2023-11-17 11:55:07,207 INFO L125 PetriNetUnfolderBase]: For 103649/103649 co-relation queries the response was YES. [2023-11-17 11:55:07,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44528 conditions, 7698 events. 4879/7698 cut-off events. For 103649/103649 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 46870 event pairs, 1008 based on Foata normal form. 8/7636 useless extension candidates. Maximal degree in co-relation 44430. Up to 4664 conditions per place. [2023-11-17 11:55:07,283 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 238 selfloop transitions, 91 changer transitions 0/329 dead transitions. [2023-11-17 11:55:07,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 329 transitions, 6523 flow [2023-11-17 11:55:07,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2023-11-17 11:55:07,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2023-11-17 11:55:07,284 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 135 transitions. [2023-11-17 11:55:07,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 135 transitions. [2023-11-17 11:55:07,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:07,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 135 transitions. [2023-11-17 11:55:07,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 11:55:07,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:07,285 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:07,285 INFO L175 Difference]: Start difference. First operand has 193 places, 244 transitions, 5020 flow. Second operand 7 states and 135 transitions. [2023-11-17 11:55:07,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 329 transitions, 6523 flow [2023-11-17 11:55:07,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 329 transitions, 6309 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-17 11:55:07,649 INFO L231 Difference]: Finished difference. Result has 195 places, 252 transitions, 5287 flow [2023-11-17 11:55:07,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=4820, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5287, PETRI_PLACES=195, PETRI_TRANSITIONS=252} [2023-11-17 11:55:07,649 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2023-11-17 11:55:07,650 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 252 transitions, 5287 flow [2023-11-17 11:55:07,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:07,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:07,650 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:07,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-17 11:55:07,650 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:07,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:07,650 INFO L85 PathProgramCache]: Analyzing trace with hash 854210565, now seen corresponding path program 7 times [2023-11-17 11:55:07,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:07,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220829478] [2023-11-17 11:55:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:07,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:07,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:07,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220829478] [2023-11-17 11:55:07,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220829478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:07,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:07,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:07,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733609963] [2023-11-17 11:55:07,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:07,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:07,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:07,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:07,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:07,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:07,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 252 transitions, 5287 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:07,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:07,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:07,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:09,178 INFO L124 PetriNetUnfolderBase]: 4869/7688 cut-off events. [2023-11-17 11:55:09,178 INFO L125 PetriNetUnfolderBase]: For 106709/106709 co-relation queries the response was YES. [2023-11-17 11:55:09,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44995 conditions, 7688 events. 4869/7688 cut-off events. For 106709/106709 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 46807 event pairs, 1130 based on Foata normal form. 10/7628 useless extension candidates. Maximal degree in co-relation 44894. Up to 5316 conditions per place. [2023-11-17 11:55:09,256 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 223 selfloop transitions, 101 changer transitions 0/324 dead transitions. [2023-11-17 11:55:09,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 324 transitions, 6497 flow [2023-11-17 11:55:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:09,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2023-11-17 11:55:09,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2023-11-17 11:55:09,257 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 135 transitions. [2023-11-17 11:55:09,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 135 transitions. [2023-11-17 11:55:09,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:09,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 135 transitions. [2023-11-17 11:55:09,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 11:55:09,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:09,258 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:09,258 INFO L175 Difference]: Start difference. First operand has 195 places, 252 transitions, 5287 flow. Second operand 7 states and 135 transitions. [2023-11-17 11:55:09,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 324 transitions, 6497 flow [2023-11-17 11:55:09,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 324 transitions, 6404 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-17 11:55:09,686 INFO L231 Difference]: Finished difference. Result has 200 places, 253 transitions, 5424 flow [2023-11-17 11:55:09,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5194, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5424, PETRI_PLACES=200, PETRI_TRANSITIONS=253} [2023-11-17 11:55:09,687 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2023-11-17 11:55:09,687 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 253 transitions, 5424 flow [2023-11-17 11:55:09,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:09,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:09,687 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:09,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-11-17 11:55:09,687 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:09,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1586425497, now seen corresponding path program 8 times [2023-11-17 11:55:09,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:09,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144179906] [2023-11-17 11:55:09,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:09,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:09,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:09,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144179906] [2023-11-17 11:55:09,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144179906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:09,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:09,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:09,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152048193] [2023-11-17 11:55:09,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:09,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:09,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:09,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:09,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:09,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 253 transitions, 5424 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:09,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:09,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:09,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:11,189 INFO L124 PetriNetUnfolderBase]: 4865/7684 cut-off events. [2023-11-17 11:55:11,189 INFO L125 PetriNetUnfolderBase]: For 112120/112120 co-relation queries the response was YES. [2023-11-17 11:55:11,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45368 conditions, 7684 events. 4865/7684 cut-off events. For 112120/112120 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 46808 event pairs, 1124 based on Foata normal form. 4/7618 useless extension candidates. Maximal degree in co-relation 45266. Up to 5316 conditions per place. [2023-11-17 11:55:11,267 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 214 selfloop transitions, 101 changer transitions 4/319 dead transitions. [2023-11-17 11:55:11,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 319 transitions, 6556 flow [2023-11-17 11:55:11,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:11,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:11,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2023-11-17 11:55:11,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.335978835978836 [2023-11-17 11:55:11,268 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 127 transitions. [2023-11-17 11:55:11,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 127 transitions. [2023-11-17 11:55:11,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:11,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 127 transitions. [2023-11-17 11:55:11,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 11:55:11,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:11,269 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:11,269 INFO L175 Difference]: Start difference. First operand has 200 places, 253 transitions, 5424 flow. Second operand 7 states and 127 transitions. [2023-11-17 11:55:11,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 319 transitions, 6556 flow [2023-11-17 11:55:11,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 319 transitions, 6356 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 11:55:11,661 INFO L231 Difference]: Finished difference. Result has 203 places, 255 transitions, 5448 flow [2023-11-17 11:55:11,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5182, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5448, PETRI_PLACES=203, PETRI_TRANSITIONS=255} [2023-11-17 11:55:11,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2023-11-17 11:55:11,662 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 255 transitions, 5448 flow [2023-11-17 11:55:11,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:11,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:11,662 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:11,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-11-17 11:55:11,662 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:11,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:11,662 INFO L85 PathProgramCache]: Analyzing trace with hash -977182827, now seen corresponding path program 10 times [2023-11-17 11:55:11,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:11,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942192137] [2023-11-17 11:55:11,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:11,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:11,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:11,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942192137] [2023-11-17 11:55:11,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942192137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:11,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:11,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:11,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427997884] [2023-11-17 11:55:11,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:11,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:11,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:11,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:11,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 255 transitions, 5448 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:11,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:11,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:11,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:13,218 INFO L124 PetriNetUnfolderBase]: 4846/7647 cut-off events. [2023-11-17 11:55:13,218 INFO L125 PetriNetUnfolderBase]: For 114420/114420 co-relation queries the response was YES. [2023-11-17 11:55:13,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45555 conditions, 7647 events. 4846/7647 cut-off events. For 114420/114420 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 46470 event pairs, 1002 based on Foata normal form. 6/7583 useless extension candidates. Maximal degree in co-relation 45452. Up to 4664 conditions per place. [2023-11-17 11:55:13,297 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 230 selfloop transitions, 86 changer transitions 6/322 dead transitions. [2023-11-17 11:55:13,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 322 transitions, 6617 flow [2023-11-17 11:55:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2023-11-17 11:55:13,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3386243386243386 [2023-11-17 11:55:13,298 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 128 transitions. [2023-11-17 11:55:13,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 128 transitions. [2023-11-17 11:55:13,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:13,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 128 transitions. [2023-11-17 11:55:13,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 11:55:13,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:13,299 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:13,299 INFO L175 Difference]: Start difference. First operand has 203 places, 255 transitions, 5448 flow. Second operand 7 states and 128 transitions. [2023-11-17 11:55:13,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 322 transitions, 6617 flow [2023-11-17 11:55:13,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 322 transitions, 6437 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-17 11:55:13,729 INFO L231 Difference]: Finished difference. Result has 206 places, 254 transitions, 5434 flow [2023-11-17 11:55:13,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5253, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5434, PETRI_PLACES=206, PETRI_TRANSITIONS=254} [2023-11-17 11:55:13,729 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-11-17 11:55:13,729 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 254 transitions, 5434 flow [2023-11-17 11:55:13,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:13,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:13,729 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:13,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-17 11:55:13,730 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:13,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:13,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1724196963, now seen corresponding path program 9 times [2023-11-17 11:55:13,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:13,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117707005] [2023-11-17 11:55:13,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:13,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:13,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:13,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:13,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117707005] [2023-11-17 11:55:13,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117707005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:13,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:13,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:13,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732488138] [2023-11-17 11:55:13,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:13,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:13,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:13,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:13,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:13,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:13,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 254 transitions, 5434 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:13,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:13,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:13,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:15,263 INFO L124 PetriNetUnfolderBase]: 4833/7616 cut-off events. [2023-11-17 11:55:15,263 INFO L125 PetriNetUnfolderBase]: For 113672/113672 co-relation queries the response was YES. [2023-11-17 11:55:15,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45204 conditions, 7616 events. 4833/7616 cut-off events. For 113672/113672 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 46122 event pairs, 1124 based on Foata normal form. 4/7550 useless extension candidates. Maximal degree in co-relation 45100. Up to 5286 conditions per place. [2023-11-17 11:55:15,343 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 215 selfloop transitions, 96 changer transitions 4/315 dead transitions. [2023-11-17 11:55:15,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 315 transitions, 6486 flow [2023-11-17 11:55:15,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:15,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:15,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2023-11-17 11:55:15,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3386243386243386 [2023-11-17 11:55:15,344 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 128 transitions. [2023-11-17 11:55:15,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 128 transitions. [2023-11-17 11:55:15,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:15,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 128 transitions. [2023-11-17 11:55:15,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 11:55:15,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:15,345 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:15,345 INFO L175 Difference]: Start difference. First operand has 206 places, 254 transitions, 5434 flow. Second operand 7 states and 128 transitions. [2023-11-17 11:55:15,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 315 transitions, 6486 flow [2023-11-17 11:55:15,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 315 transitions, 6304 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-17 11:55:15,759 INFO L231 Difference]: Finished difference. Result has 206 places, 252 transitions, 5394 flow [2023-11-17 11:55:15,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5215, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5394, PETRI_PLACES=206, PETRI_TRANSITIONS=252} [2023-11-17 11:55:15,759 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2023-11-17 11:55:15,759 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 252 transitions, 5394 flow [2023-11-17 11:55:15,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:15,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:15,760 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:15,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-17 11:55:15,760 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:15,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1006219861, now seen corresponding path program 11 times [2023-11-17 11:55:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:15,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074725047] [2023-11-17 11:55:15,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:15,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:15,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:15,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074725047] [2023-11-17 11:55:15,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074725047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:15,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:15,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:15,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912237993] [2023-11-17 11:55:15,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:15,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:15,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:15,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:15,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:15,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:15,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 252 transitions, 5394 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:15,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:15,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:15,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:17,357 INFO L124 PetriNetUnfolderBase]: 4914/7817 cut-off events. [2023-11-17 11:55:17,357 INFO L125 PetriNetUnfolderBase]: For 114111/114111 co-relation queries the response was YES. [2023-11-17 11:55:17,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45893 conditions, 7817 events. 4914/7817 cut-off events. For 114111/114111 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 48436 event pairs, 1392 based on Foata normal form. 6/7753 useless extension candidates. Maximal degree in co-relation 45789. Up to 5232 conditions per place. [2023-11-17 11:55:17,433 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 230 selfloop transitions, 103 changer transitions 9/342 dead transitions. [2023-11-17 11:55:17,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 342 transitions, 6916 flow [2023-11-17 11:55:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2023-11-17 11:55:17,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35978835978835977 [2023-11-17 11:55:17,435 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 136 transitions. [2023-11-17 11:55:17,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 136 transitions. [2023-11-17 11:55:17,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:17,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 136 transitions. [2023-11-17 11:55:17,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:55:17,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:17,436 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:17,436 INFO L175 Difference]: Start difference. First operand has 206 places, 252 transitions, 5394 flow. Second operand 7 states and 136 transitions. [2023-11-17 11:55:17,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 342 transitions, 6916 flow [2023-11-17 11:55:17,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 342 transitions, 6696 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 11:55:17,842 INFO L231 Difference]: Finished difference. Result has 210 places, 266 transitions, 5750 flow [2023-11-17 11:55:17,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5200, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5750, PETRI_PLACES=210, PETRI_TRANSITIONS=266} [2023-11-17 11:55:17,843 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2023-11-17 11:55:17,843 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 266 transitions, 5750 flow [2023-11-17 11:55:17,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:17,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:17,843 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:17,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-17 11:55:17,843 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:17,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:17,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1395794961, now seen corresponding path program 12 times [2023-11-17 11:55:17,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:17,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453948724] [2023-11-17 11:55:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:17,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:18,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:18,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:18,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453948724] [2023-11-17 11:55:18,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453948724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:18,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:18,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:18,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651182169] [2023-11-17 11:55:18,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:18,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:18,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:18,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:18,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:18,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:18,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 266 transitions, 5750 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:18,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:18,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:18,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:19,529 INFO L124 PetriNetUnfolderBase]: 4898/7787 cut-off events. [2023-11-17 11:55:19,529 INFO L125 PetriNetUnfolderBase]: For 115785/115785 co-relation queries the response was YES. [2023-11-17 11:55:19,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46410 conditions, 7787 events. 4898/7787 cut-off events. For 115785/115785 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 48035 event pairs, 1462 based on Foata normal form. 8/7725 useless extension candidates. Maximal degree in co-relation 46302. Up to 5232 conditions per place. [2023-11-17 11:55:19,610 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 239 selfloop transitions, 108 changer transitions 0/347 dead transitions. [2023-11-17 11:55:19,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 347 transitions, 7069 flow [2023-11-17 11:55:19,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:19,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:19,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2023-11-17 11:55:19,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2023-11-17 11:55:19,612 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 142 transitions. [2023-11-17 11:55:19,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 142 transitions. [2023-11-17 11:55:19,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:19,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 142 transitions. [2023-11-17 11:55:19,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 11:55:19,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:19,613 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:19,613 INFO L175 Difference]: Start difference. First operand has 210 places, 266 transitions, 5750 flow. Second operand 7 states and 142 transitions. [2023-11-17 11:55:19,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 347 transitions, 7069 flow [2023-11-17 11:55:20,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 347 transitions, 6921 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 11:55:20,057 INFO L231 Difference]: Finished difference. Result has 212 places, 267 transitions, 5853 flow [2023-11-17 11:55:20,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5609, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5853, PETRI_PLACES=212, PETRI_TRANSITIONS=267} [2023-11-17 11:55:20,057 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2023-11-17 11:55:20,057 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 267 transitions, 5853 flow [2023-11-17 11:55:20,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:20,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:20,058 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:20,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-17 11:55:20,058 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:20,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1650299841, now seen corresponding path program 10 times [2023-11-17 11:55:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:20,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444437434] [2023-11-17 11:55:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:20,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:20,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:20,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444437434] [2023-11-17 11:55:20,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444437434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:20,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:20,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:55:20,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169761217] [2023-11-17 11:55:20,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:20,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:55:20,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:20,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:55:20,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:55:20,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:20,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 267 transitions, 5853 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:55:20,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:20,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:20,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:21,849 INFO L124 PetriNetUnfolderBase]: 5286/8439 cut-off events. [2023-11-17 11:55:21,849 INFO L125 PetriNetUnfolderBase]: For 122682/122682 co-relation queries the response was YES. [2023-11-17 11:55:21,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49201 conditions, 8439 events. 5286/8439 cut-off events. For 122682/122682 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 53535 event pairs, 1066 based on Foata normal form. 10/8379 useless extension candidates. Maximal degree in co-relation 49094. Up to 2728 conditions per place. [2023-11-17 11:55:21,936 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 286 selfloop transitions, 91 changer transitions 0/377 dead transitions. [2023-11-17 11:55:21,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 377 transitions, 7607 flow [2023-11-17 11:55:21,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:21,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:21,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 145 transitions. [2023-11-17 11:55:21,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835978835978836 [2023-11-17 11:55:21,937 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 145 transitions. [2023-11-17 11:55:21,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 145 transitions. [2023-11-17 11:55:21,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:21,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 145 transitions. [2023-11-17 11:55:21,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 0 states have call successors, (0), 0 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 11:55:21,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:21,938 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:21,938 INFO L175 Difference]: Start difference. First operand has 212 places, 267 transitions, 5853 flow. Second operand 7 states and 145 transitions. [2023-11-17 11:55:21,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 377 transitions, 7607 flow [2023-11-17 11:55:22,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 377 transitions, 7389 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 11:55:22,379 INFO L231 Difference]: Finished difference. Result has 216 places, 269 transitions, 5911 flow [2023-11-17 11:55:22,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5618, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5911, PETRI_PLACES=216, PETRI_TRANSITIONS=269} [2023-11-17 11:55:22,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2023-11-17 11:55:22,379 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 269 transitions, 5911 flow [2023-11-17 11:55:22,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:55:22,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:22,379 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:22,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-17 11:55:22,380 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:22,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:22,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1807187627, now seen corresponding path program 11 times [2023-11-17 11:55:22,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:22,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065215534] [2023-11-17 11:55:22,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:22,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:22,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:22,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:22,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065215534] [2023-11-17 11:55:22,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065215534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:22,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:22,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:22,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203288395] [2023-11-17 11:55:22,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:22,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:22,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:22,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:22,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:22,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:22,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 269 transitions, 5911 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:22,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:22,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:22,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:24,442 INFO L124 PetriNetUnfolderBase]: 5254/8383 cut-off events. [2023-11-17 11:55:24,442 INFO L125 PetriNetUnfolderBase]: For 126612/126612 co-relation queries the response was YES. [2023-11-17 11:55:24,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49804 conditions, 8383 events. 5254/8383 cut-off events. For 126612/126612 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 52872 event pairs, 1296 based on Foata normal form. 20/8333 useless extension candidates. Maximal degree in co-relation 49694. Up to 2908 conditions per place. [2023-11-17 11:55:24,512 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 248 selfloop transitions, 105 changer transitions 0/353 dead transitions. [2023-11-17 11:55:24,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 353 transitions, 7283 flow [2023-11-17 11:55:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:24,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2023-11-17 11:55:24,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2023-11-17 11:55:24,513 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 144 transitions. [2023-11-17 11:55:24,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 144 transitions. [2023-11-17 11:55:24,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:24,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 144 transitions. [2023-11-17 11:55:24,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 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 11:55:24,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:24,514 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:24,514 INFO L175 Difference]: Start difference. First operand has 216 places, 269 transitions, 5911 flow. Second operand 7 states and 144 transitions. [2023-11-17 11:55:24,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 353 transitions, 7283 flow [2023-11-17 11:55:24,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 353 transitions, 7156 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 11:55:24,964 INFO L231 Difference]: Finished difference. Result has 220 places, 270 transitions, 6042 flow [2023-11-17 11:55:24,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5788, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6042, PETRI_PLACES=220, PETRI_TRANSITIONS=270} [2023-11-17 11:55:24,965 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2023-11-17 11:55:24,965 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 270 transitions, 6042 flow [2023-11-17 11:55:24,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:24,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:24,965 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:24,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-17 11:55:24,965 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:24,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:24,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1005791159, now seen corresponding path program 13 times [2023-11-17 11:55:24,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:24,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945790700] [2023-11-17 11:55:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:24,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:25,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:25,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945790700] [2023-11-17 11:55:25,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945790700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:25,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:25,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:25,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566672453] [2023-11-17 11:55:25,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:25,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:25,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:25,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:25,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:25,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:25,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 270 transitions, 6042 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:25,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:25,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:25,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:26,783 INFO L124 PetriNetUnfolderBase]: 5248/8377 cut-off events. [2023-11-17 11:55:26,783 INFO L125 PetriNetUnfolderBase]: For 129564/129564 co-relation queries the response was YES. [2023-11-17 11:55:26,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50178 conditions, 8377 events. 5248/8377 cut-off events. For 129564/129564 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 52671 event pairs, 1614 based on Foata normal form. 6/8313 useless extension candidates. Maximal degree in co-relation 50068. Up to 5828 conditions per place. [2023-11-17 11:55:26,933 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 240 selfloop transitions, 107 changer transitions 8/355 dead transitions. [2023-11-17 11:55:26,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 355 transitions, 7367 flow [2023-11-17 11:55:26,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:26,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2023-11-17 11:55:26,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2023-11-17 11:55:26,934 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 140 transitions. [2023-11-17 11:55:26,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 140 transitions. [2023-11-17 11:55:26,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:26,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 140 transitions. [2023-11-17 11:55:26,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 11:55:26,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:26,935 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:26,935 INFO L175 Difference]: Start difference. First operand has 220 places, 270 transitions, 6042 flow. Second operand 7 states and 140 transitions. [2023-11-17 11:55:26,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 355 transitions, 7367 flow [2023-11-17 11:55:27,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 355 transitions, 7167 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 11:55:27,325 INFO L231 Difference]: Finished difference. Result has 223 places, 270 transitions, 6048 flow [2023-11-17 11:55:27,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5808, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6048, PETRI_PLACES=223, PETRI_TRANSITIONS=270} [2023-11-17 11:55:27,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2023-11-17 11:55:27,326 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 270 transitions, 6048 flow [2023-11-17 11:55:27,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:27,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:27,326 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:27,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-17 11:55:27,326 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:27,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:27,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1068681241, now seen corresponding path program 12 times [2023-11-17 11:55:27,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:27,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892910867] [2023-11-17 11:55:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:27,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:27,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:27,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892910867] [2023-11-17 11:55:27,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892910867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:27,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:27,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:27,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119438522] [2023-11-17 11:55:27,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:27,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:27,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:27,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:27,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:27,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 270 transitions, 6048 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:27,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:27,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:27,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:29,372 INFO L124 PetriNetUnfolderBase]: 5265/8408 cut-off events. [2023-11-17 11:55:29,372 INFO L125 PetriNetUnfolderBase]: For 128855/128855 co-relation queries the response was YES. [2023-11-17 11:55:29,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50567 conditions, 8408 events. 5265/8408 cut-off events. For 128855/128855 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 52920 event pairs, 1360 based on Foata normal form. 10/8348 useless extension candidates. Maximal degree in co-relation 50456. Up to 2728 conditions per place. [2023-11-17 11:55:29,536 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 272 selfloop transitions, 95 changer transitions 0/367 dead transitions. [2023-11-17 11:55:29,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 367 transitions, 7636 flow [2023-11-17 11:55:29,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:29,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2023-11-17 11:55:29,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2023-11-17 11:55:29,537 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 142 transitions. [2023-11-17 11:55:29,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 142 transitions. [2023-11-17 11:55:29,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:29,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 142 transitions. [2023-11-17 11:55:29,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 0 states have call successors, (0), 0 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 11:55:29,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:29,538 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:29,538 INFO L175 Difference]: Start difference. First operand has 223 places, 270 transitions, 6048 flow. Second operand 7 states and 142 transitions. [2023-11-17 11:55:29,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 367 transitions, 7636 flow [2023-11-17 11:55:29,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 367 transitions, 7432 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-11-17 11:55:29,950 INFO L231 Difference]: Finished difference. Result has 227 places, 276 transitions, 6191 flow [2023-11-17 11:55:29,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=5846, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6191, PETRI_PLACES=227, PETRI_TRANSITIONS=276} [2023-11-17 11:55:29,950 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 197 predicate places. [2023-11-17 11:55:29,950 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 276 transitions, 6191 flow [2023-11-17 11:55:29,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:29,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:29,951 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:29,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-11-17 11:55:29,951 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:29,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:29,951 INFO L85 PathProgramCache]: Analyzing trace with hash 136600971, now seen corresponding path program 14 times [2023-11-17 11:55:29,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:29,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774375631] [2023-11-17 11:55:29,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:29,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:30,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:30,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:30,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774375631] [2023-11-17 11:55:30,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774375631] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:30,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:30,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:30,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246762971] [2023-11-17 11:55:30,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:30,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:30,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:30,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:30,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:30,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:30,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 276 transitions, 6191 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:30,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:30,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:30,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:32,093 INFO L124 PetriNetUnfolderBase]: 5353/8548 cut-off events. [2023-11-17 11:55:32,094 INFO L125 PetriNetUnfolderBase]: For 136712/136712 co-relation queries the response was YES. [2023-11-17 11:55:32,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52159 conditions, 8548 events. 5353/8548 cut-off events. For 136712/136712 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 54123 event pairs, 1390 based on Foata normal form. 4/8482 useless extension candidates. Maximal degree in co-relation 52046. Up to 3577 conditions per place. [2023-11-17 11:55:32,171 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 261 selfloop transitions, 120 changer transitions 0/381 dead transitions. [2023-11-17 11:55:32,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 381 transitions, 8349 flow [2023-11-17 11:55:32,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:32,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2023-11-17 11:55:32,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2023-11-17 11:55:32,172 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 140 transitions. [2023-11-17 11:55:32,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 140 transitions. [2023-11-17 11:55:32,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:32,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 140 transitions. [2023-11-17 11:55:32,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 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 11:55:32,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:32,173 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:32,173 INFO L175 Difference]: Start difference. First operand has 227 places, 276 transitions, 6191 flow. Second operand 7 states and 140 transitions. [2023-11-17 11:55:32,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 381 transitions, 8349 flow [2023-11-17 11:55:32,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 381 transitions, 8187 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 11:55:32,656 INFO L231 Difference]: Finished difference. Result has 233 places, 283 transitions, 6520 flow [2023-11-17 11:55:32,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6044, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6520, PETRI_PLACES=233, PETRI_TRANSITIONS=283} [2023-11-17 11:55:32,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2023-11-17 11:55:32,657 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 283 transitions, 6520 flow [2023-11-17 11:55:32,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:32,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:32,657 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:32,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-11-17 11:55:32,657 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:32,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:32,658 INFO L85 PathProgramCache]: Analyzing trace with hash 811733945, now seen corresponding path program 15 times [2023-11-17 11:55:32,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:32,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415010334] [2023-11-17 11:55:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:32,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:32,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415010334] [2023-11-17 11:55:32,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415010334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:32,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:32,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:32,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574157562] [2023-11-17 11:55:32,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:32,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:32,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:32,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:32,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:32,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:32,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 283 transitions, 6520 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:32,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:32,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:32,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:34,830 INFO L124 PetriNetUnfolderBase]: 5361/8574 cut-off events. [2023-11-17 11:55:34,830 INFO L125 PetriNetUnfolderBase]: For 146490/146490 co-relation queries the response was YES. [2023-11-17 11:55:34,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53016 conditions, 8574 events. 5361/8574 cut-off events. For 146490/146490 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 54360 event pairs, 1608 based on Foata normal form. 12/8516 useless extension candidates. Maximal degree in co-relation 52900. Up to 5890 conditions per place. [2023-11-17 11:55:34,907 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 238 selfloop transitions, 112 changer transitions 1/351 dead transitions. [2023-11-17 11:55:34,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 351 transitions, 7745 flow [2023-11-17 11:55:34,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:34,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2023-11-17 11:55:34,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2023-11-17 11:55:34,908 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 132 transitions. [2023-11-17 11:55:34,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 132 transitions. [2023-11-17 11:55:34,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:34,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 132 transitions. [2023-11-17 11:55:34,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 11:55:34,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:34,909 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:34,909 INFO L175 Difference]: Start difference. First operand has 233 places, 283 transitions, 6520 flow. Second operand 7 states and 132 transitions. [2023-11-17 11:55:34,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 351 transitions, 7745 flow [2023-11-17 11:55:35,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 351 transitions, 7627 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-17 11:55:35,458 INFO L231 Difference]: Finished difference. Result has 239 places, 285 transitions, 6674 flow [2023-11-17 11:55:35,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6372, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6674, PETRI_PLACES=239, PETRI_TRANSITIONS=285} [2023-11-17 11:55:35,459 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2023-11-17 11:55:35,459 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 285 transitions, 6674 flow [2023-11-17 11:55:35,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:35,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:35,459 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:35,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-17 11:55:35,459 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:35,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash -720401919, now seen corresponding path program 13 times [2023-11-17 11:55:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:35,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444793458] [2023-11-17 11:55:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:35,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:35,660 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:35,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:35,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444793458] [2023-11-17 11:55:35,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444793458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:35,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:35,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:35,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989302701] [2023-11-17 11:55:35,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:35,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:35,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:35,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:35,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:35,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:35,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 285 transitions, 6674 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:35,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:35,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:35,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:37,596 INFO L124 PetriNetUnfolderBase]: 5350/8545 cut-off events. [2023-11-17 11:55:37,596 INFO L125 PetriNetUnfolderBase]: For 147609/147609 co-relation queries the response was YES. [2023-11-17 11:55:37,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53482 conditions, 8545 events. 5350/8545 cut-off events. For 147609/147609 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 53976 event pairs, 1390 based on Foata normal form. 4/8479 useless extension candidates. Maximal degree in co-relation 53364. Up to 2834 conditions per place. [2023-11-17 11:55:37,679 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 269 selfloop transitions, 97 changer transitions 4/370 dead transitions. [2023-11-17 11:55:37,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 370 transitions, 8120 flow [2023-11-17 11:55:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:37,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:37,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2023-11-17 11:55:37,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2023-11-17 11:55:37,680 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 135 transitions. [2023-11-17 11:55:37,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 135 transitions. [2023-11-17 11:55:37,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:37,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 135 transitions. [2023-11-17 11:55:37,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 11:55:37,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:37,681 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:37,681 INFO L175 Difference]: Start difference. First operand has 239 places, 285 transitions, 6674 flow. Second operand 7 states and 135 transitions. [2023-11-17 11:55:37,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 370 transitions, 8120 flow [2023-11-17 11:55:38,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 370 transitions, 7975 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-17 11:55:38,283 INFO L231 Difference]: Finished difference. Result has 243 places, 283 transitions, 6671 flow [2023-11-17 11:55:38,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6498, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6671, PETRI_PLACES=243, PETRI_TRANSITIONS=283} [2023-11-17 11:55:38,284 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2023-11-17 11:55:38,284 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 283 transitions, 6671 flow [2023-11-17 11:55:38,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:38,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:38,284 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:38,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-17 11:55:38,285 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:38,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:38,285 INFO L85 PathProgramCache]: Analyzing trace with hash -582240367, now seen corresponding path program 16 times [2023-11-17 11:55:38,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:38,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528021787] [2023-11-17 11:55:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:38,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:38,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:38,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:38,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528021787] [2023-11-17 11:55:38,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528021787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:38,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:38,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:38,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527658472] [2023-11-17 11:55:38,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:38,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:38,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:38,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:38,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:38,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:38,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 283 transitions, 6671 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:38,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:38,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:38,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:40,353 INFO L124 PetriNetUnfolderBase]: 5331/8508 cut-off events. [2023-11-17 11:55:40,353 INFO L125 PetriNetUnfolderBase]: For 151188/151188 co-relation queries the response was YES. [2023-11-17 11:55:40,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53216 conditions, 8508 events. 5331/8508 cut-off events. For 151188/151188 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 53606 event pairs, 1684 based on Foata normal form. 6/8444 useless extension candidates. Maximal degree in co-relation 53098. Up to 5868 conditions per place. [2023-11-17 11:55:40,436 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 239 selfloop transitions, 111 changer transitions 6/356 dead transitions. [2023-11-17 11:55:40,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 356 transitions, 7903 flow [2023-11-17 11:55:40,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:40,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:40,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2023-11-17 11:55:40,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2023-11-17 11:55:40,437 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 135 transitions. [2023-11-17 11:55:40,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 135 transitions. [2023-11-17 11:55:40,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:40,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 135 transitions. [2023-11-17 11:55:40,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 11:55:40,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:40,438 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:40,438 INFO L175 Difference]: Start difference. First operand has 243 places, 283 transitions, 6671 flow. Second operand 7 states and 135 transitions. [2023-11-17 11:55:40,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 356 transitions, 7903 flow [2023-11-17 11:55:40,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 356 transitions, 7701 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-17 11:55:40,992 INFO L231 Difference]: Finished difference. Result has 243 places, 281 transitions, 6628 flow [2023-11-17 11:55:40,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6429, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6628, PETRI_PLACES=243, PETRI_TRANSITIONS=281} [2023-11-17 11:55:40,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2023-11-17 11:55:40,992 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 281 transitions, 6628 flow [2023-11-17 11:55:40,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:40,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:40,992 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:40,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-17 11:55:40,993 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:40,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash -253888767, now seen corresponding path program 17 times [2023-11-17 11:55:40,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:40,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652060999] [2023-11-17 11:55:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:40,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:41,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:41,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:41,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652060999] [2023-11-17 11:55:41,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652060999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:41,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:41,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:41,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018302135] [2023-11-17 11:55:41,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:41,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:41,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:41,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:41,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:41,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:41,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 281 transitions, 6628 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:41,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:41,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:41,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:43,239 INFO L124 PetriNetUnfolderBase]: 5498/8803 cut-off events. [2023-11-17 11:55:43,239 INFO L125 PetriNetUnfolderBase]: For 158083/158083 co-relation queries the response was YES. [2023-11-17 11:55:43,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55142 conditions, 8803 events. 5498/8803 cut-off events. For 158083/158083 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 56137 event pairs, 1750 based on Foata normal form. 4/8737 useless extension candidates. Maximal degree in co-relation 55024. Up to 5896 conditions per place. [2023-11-17 11:55:43,323 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 243 selfloop transitions, 117 changer transitions 0/360 dead transitions. [2023-11-17 11:55:43,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 360 transitions, 8056 flow [2023-11-17 11:55:43,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:43,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:43,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2023-11-17 11:55:43,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783068783068783 [2023-11-17 11:55:43,324 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 143 transitions. [2023-11-17 11:55:43,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 143 transitions. [2023-11-17 11:55:43,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:43,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 143 transitions. [2023-11-17 11:55:43,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 11:55:43,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:43,325 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:43,325 INFO L175 Difference]: Start difference. First operand has 243 places, 281 transitions, 6628 flow. Second operand 7 states and 143 transitions. [2023-11-17 11:55:43,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 360 transitions, 8056 flow [2023-11-17 11:55:43,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 360 transitions, 7818 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-17 11:55:43,873 INFO L231 Difference]: Finished difference. Result has 243 places, 288 transitions, 6824 flow [2023-11-17 11:55:43,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6404, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6824, PETRI_PLACES=243, PETRI_TRANSITIONS=288} [2023-11-17 11:55:43,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2023-11-17 11:55:43,874 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 288 transitions, 6824 flow [2023-11-17 11:55:43,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:43,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:43,874 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-17 11:55:43,874 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:43,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash 42823921, now seen corresponding path program 18 times [2023-11-17 11:55:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782151105] [2023-11-17 11:55:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:43,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:44,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:44,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782151105] [2023-11-17 11:55:44,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782151105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:44,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:44,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:44,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67558677] [2023-11-17 11:55:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:44,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:44,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:44,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 288 transitions, 6824 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:44,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:44,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:44,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:46,100 INFO L124 PetriNetUnfolderBase]: 5490/8781 cut-off events. [2023-11-17 11:55:46,100 INFO L125 PetriNetUnfolderBase]: For 159834/159834 co-relation queries the response was YES. [2023-11-17 11:55:46,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55201 conditions, 8781 events. 5490/8781 cut-off events. For 159834/159834 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 55875 event pairs, 1648 based on Foata normal form. 4/8715 useless extension candidates. Maximal degree in co-relation 55082. Up to 5896 conditions per place. [2023-11-17 11:55:46,194 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 228 selfloop transitions, 117 changer transitions 0/345 dead transitions. [2023-11-17 11:55:46,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 345 transitions, 7919 flow [2023-11-17 11:55:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:46,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:46,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2023-11-17 11:55:46,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2023-11-17 11:55:46,195 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 126 transitions. [2023-11-17 11:55:46,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 126 transitions. [2023-11-17 11:55:46,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:46,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 126 transitions. [2023-11-17 11:55:46,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 11:55:46,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:46,196 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:46,196 INFO L175 Difference]: Start difference. First operand has 243 places, 288 transitions, 6824 flow. Second operand 7 states and 126 transitions. [2023-11-17 11:55:46,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 345 transitions, 7919 flow [2023-11-17 11:55:46,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 345 transitions, 7661 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-17 11:55:46,741 INFO L231 Difference]: Finished difference. Result has 243 places, 287 transitions, 6770 flow [2023-11-17 11:55:46,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6536, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6770, PETRI_PLACES=243, PETRI_TRANSITIONS=287} [2023-11-17 11:55:46,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2023-11-17 11:55:46,742 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 287 transitions, 6770 flow [2023-11-17 11:55:46,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:46,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:46,742 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:46,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-17 11:55:46,742 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:46,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:46,743 INFO L85 PathProgramCache]: Analyzing trace with hash 556904715, now seen corresponding path program 14 times [2023-11-17 11:55:46,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:46,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879004654] [2023-11-17 11:55:46,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:46,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:46,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:47,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:47,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879004654] [2023-11-17 11:55:47,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879004654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:47,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:47,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:47,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836978024] [2023-11-17 11:55:47,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:47,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:47,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:47,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:47,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:47,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 287 transitions, 6770 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:47,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:47,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:47,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:48,936 INFO L124 PetriNetUnfolderBase]: 5594/8959 cut-off events. [2023-11-17 11:55:48,936 INFO L125 PetriNetUnfolderBase]: For 159446/159446 co-relation queries the response was YES. [2023-11-17 11:55:48,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56108 conditions, 8959 events. 5594/8959 cut-off events. For 159446/159446 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 57355 event pairs, 1562 based on Foata normal form. 20/8909 useless extension candidates. Maximal degree in co-relation 55990. Up to 4581 conditions per place. [2023-11-17 11:55:49,022 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 263 selfloop transitions, 110 changer transitions 0/373 dead transitions. [2023-11-17 11:55:49,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 373 transitions, 8275 flow [2023-11-17 11:55:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:49,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2023-11-17 11:55:49,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2023-11-17 11:55:49,023 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 141 transitions. [2023-11-17 11:55:49,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 141 transitions. [2023-11-17 11:55:49,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:49,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 141 transitions. [2023-11-17 11:55:49,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 11:55:49,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:49,024 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:49,024 INFO L175 Difference]: Start difference. First operand has 243 places, 287 transitions, 6770 flow. Second operand 7 states and 141 transitions. [2023-11-17 11:55:49,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 373 transitions, 8275 flow [2023-11-17 11:55:49,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 373 transitions, 8061 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-17 11:55:49,580 INFO L231 Difference]: Finished difference. Result has 248 places, 294 transitions, 6987 flow [2023-11-17 11:55:49,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6558, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6987, PETRI_PLACES=248, PETRI_TRANSITIONS=294} [2023-11-17 11:55:49,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2023-11-17 11:55:49,581 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 294 transitions, 6987 flow [2023-11-17 11:55:49,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:49,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:49,581 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:49,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-17 11:55:49,581 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:49,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:49,582 INFO L85 PathProgramCache]: Analyzing trace with hash 312606473, now seen corresponding path program 15 times [2023-11-17 11:55:49,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:49,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553853122] [2023-11-17 11:55:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:49,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:49,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553853122] [2023-11-17 11:55:49,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553853122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:49,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:49,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:49,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089744627] [2023-11-17 11:55:49,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:49,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:49,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:49,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:49,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:49,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:49,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 294 transitions, 6987 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:49,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:49,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:49,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:51,883 INFO L124 PetriNetUnfolderBase]: 5595/8976 cut-off events. [2023-11-17 11:55:51,884 INFO L125 PetriNetUnfolderBase]: For 162979/162979 co-relation queries the response was YES. [2023-11-17 11:55:51,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56765 conditions, 8976 events. 5595/8976 cut-off events. For 162979/162979 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 57605 event pairs, 1572 based on Foata normal form. 8/8914 useless extension candidates. Maximal degree in co-relation 56644. Up to 4581 conditions per place. [2023-11-17 11:55:51,972 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 266 selfloop transitions, 109 changer transitions 1/376 dead transitions. [2023-11-17 11:55:51,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 376 transitions, 8445 flow [2023-11-17 11:55:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2023-11-17 11:55:51,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2023-11-17 11:55:51,973 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2023-11-17 11:55:51,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2023-11-17 11:55:51,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:51,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2023-11-17 11:55:51,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 11:55:51,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:51,974 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:51,974 INFO L175 Difference]: Start difference. First operand has 248 places, 294 transitions, 6987 flow. Second operand 7 states and 139 transitions. [2023-11-17 11:55:51,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 376 transitions, 8445 flow [2023-11-17 11:55:52,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 376 transitions, 8329 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-17 11:55:52,577 INFO L231 Difference]: Finished difference. Result has 255 places, 299 transitions, 7260 flow [2023-11-17 11:55:52,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=6877, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7260, PETRI_PLACES=255, PETRI_TRANSITIONS=299} [2023-11-17 11:55:52,578 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2023-11-17 11:55:52,634 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 299 transitions, 7260 flow [2023-11-17 11:55:52,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:52,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:52,634 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:52,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-17 11:55:52,634 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:52,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 494441419, now seen corresponding path program 16 times [2023-11-17 11:55:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:52,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505986364] [2023-11-17 11:55:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:52,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:52,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:52,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505986364] [2023-11-17 11:55:52,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505986364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:52,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:52,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:52,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464182043] [2023-11-17 11:55:52,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:52,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:52,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:52,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:52,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:52,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 299 transitions, 7260 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:52,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:52,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:52,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:54,992 INFO L124 PetriNetUnfolderBase]: 5628/9009 cut-off events. [2023-11-17 11:55:54,992 INFO L125 PetriNetUnfolderBase]: For 171997/171997 co-relation queries the response was YES. [2023-11-17 11:55:55,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58010 conditions, 9009 events. 5628/9009 cut-off events. For 171997/171997 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 57694 event pairs, 1568 based on Foata normal form. 10/8949 useless extension candidates. Maximal degree in co-relation 57886. Up to 4605 conditions per place. [2023-11-17 11:55:55,091 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 259 selfloop transitions, 125 changer transitions 0/384 dead transitions. [2023-11-17 11:55:55,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 384 transitions, 8816 flow [2023-11-17 11:55:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2023-11-17 11:55:55,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783068783068783 [2023-11-17 11:55:55,092 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 143 transitions. [2023-11-17 11:55:55,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 143 transitions. [2023-11-17 11:55:55,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:55,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 143 transitions. [2023-11-17 11:55:55,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 11:55:55,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:55,093 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:55,093 INFO L175 Difference]: Start difference. First operand has 255 places, 299 transitions, 7260 flow. Second operand 7 states and 143 transitions. [2023-11-17 11:55:55,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 384 transitions, 8816 flow [2023-11-17 11:55:55,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 384 transitions, 8672 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-17 11:55:55,767 INFO L231 Difference]: Finished difference. Result has 261 places, 308 transitions, 7662 flow [2023-11-17 11:55:55,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7118, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7662, PETRI_PLACES=261, PETRI_TRANSITIONS=308} [2023-11-17 11:55:55,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2023-11-17 11:55:55,768 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 308 transitions, 7662 flow [2023-11-17 11:55:55,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:55,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:55,768 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:55,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-17 11:55:55,768 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:55,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:55,769 INFO L85 PathProgramCache]: Analyzing trace with hash 573516775, now seen corresponding path program 17 times [2023-11-17 11:55:55,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:55,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531436769] [2023-11-17 11:55:55,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:55,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:55,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:55,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531436769] [2023-11-17 11:55:55,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531436769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:55,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:55,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:55,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170964669] [2023-11-17 11:55:55,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:55,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:55,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:55,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:55,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:55,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 308 transitions, 7662 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:55,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:55,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:55,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:58,067 INFO L124 PetriNetUnfolderBase]: 5640/9029 cut-off events. [2023-11-17 11:55:58,068 INFO L125 PetriNetUnfolderBase]: For 180410/180410 co-relation queries the response was YES. [2023-11-17 11:55:58,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59311 conditions, 9029 events. 5640/9029 cut-off events. For 180410/180410 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 57832 event pairs, 1584 based on Foata normal form. 4/8963 useless extension candidates. Maximal degree in co-relation 59184. Up to 4605 conditions per place. [2023-11-17 11:55:58,161 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 254 selfloop transitions, 126 changer transitions 0/380 dead transitions. [2023-11-17 11:55:58,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 380 transitions, 9040 flow [2023-11-17 11:55:58,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:55:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:55:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2023-11-17 11:55:58,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36243386243386244 [2023-11-17 11:55:58,162 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 137 transitions. [2023-11-17 11:55:58,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 137 transitions. [2023-11-17 11:55:58,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:58,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 137 transitions. [2023-11-17 11:55:58,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 11:55:58,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:58,163 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:55:58,163 INFO L175 Difference]: Start difference. First operand has 261 places, 308 transitions, 7662 flow. Second operand 7 states and 137 transitions. [2023-11-17 11:55:58,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 380 transitions, 9040 flow [2023-11-17 11:55:58,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 380 transitions, 8776 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-17 11:55:58,850 INFO L231 Difference]: Finished difference. Result has 265 places, 311 transitions, 7765 flow [2023-11-17 11:55:58,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7408, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7765, PETRI_PLACES=265, PETRI_TRANSITIONS=311} [2023-11-17 11:55:58,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2023-11-17 11:55:58,850 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 311 transitions, 7765 flow [2023-11-17 11:55:58,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:58,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:58,851 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:55:58,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-11-17 11:55:58,851 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:58,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:58,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1435074553, now seen corresponding path program 19 times [2023-11-17 11:55:58,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:58,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024658607] [2023-11-17 11:55:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:58,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:59,043 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:55:59,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:59,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024658607] [2023-11-17 11:55:59,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024658607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:59,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:59,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:55:59,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092570573] [2023-11-17 11:55:59,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:59,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:55:59,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:59,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:55:59,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:55:59,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:55:59,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 311 transitions, 7765 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:55:59,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:59,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:55:59,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:01,098 INFO L124 PetriNetUnfolderBase]: 5604/8965 cut-off events. [2023-11-17 11:56:01,098 INFO L125 PetriNetUnfolderBase]: For 180086/180086 co-relation queries the response was YES. [2023-11-17 11:56:01,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58287 conditions, 8965 events. 5604/8965 cut-off events. For 180086/180086 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 57302 event pairs, 1750 based on Foata normal form. 16/8911 useless extension candidates. Maximal degree in co-relation 58158. Up to 6122 conditions per place. [2023-11-17 11:56:01,196 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 257 selfloop transitions, 125 changer transitions 0/382 dead transitions. [2023-11-17 11:56:01,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 382 transitions, 9065 flow [2023-11-17 11:56:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:01,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:01,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2023-11-17 11:56:01,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783068783068783 [2023-11-17 11:56:01,196 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 143 transitions. [2023-11-17 11:56:01,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 143 transitions. [2023-11-17 11:56:01,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:01,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 143 transitions. [2023-11-17 11:56:01,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 11:56:01,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:01,197 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:01,197 INFO L175 Difference]: Start difference. First operand has 265 places, 311 transitions, 7765 flow. Second operand 7 states and 143 transitions. [2023-11-17 11:56:01,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 382 transitions, 9065 flow [2023-11-17 11:56:01,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 382 transitions, 8844 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 11:56:01,925 INFO L231 Difference]: Finished difference. Result has 269 places, 314 transitions, 7914 flow [2023-11-17 11:56:01,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7544, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7914, PETRI_PLACES=269, PETRI_TRANSITIONS=314} [2023-11-17 11:56:01,926 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2023-11-17 11:56:01,926 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 314 transitions, 7914 flow [2023-11-17 11:56:01,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:01,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:01,926 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:01,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-11-17 11:56:01,926 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:01,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash 48093445, now seen corresponding path program 18 times [2023-11-17 11:56:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:01,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739986489] [2023-11-17 11:56:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:01,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:02,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:02,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739986489] [2023-11-17 11:56:02,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739986489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:02,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:02,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:02,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53788020] [2023-11-17 11:56:02,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:02,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:02,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:02,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:02,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:02,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 314 transitions, 7914 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:02,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:02,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:02,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:04,163 INFO L124 PetriNetUnfolderBase]: 5594/8943 cut-off events. [2023-11-17 11:56:04,164 INFO L125 PetriNetUnfolderBase]: For 179917/179917 co-relation queries the response was YES. [2023-11-17 11:56:04,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58359 conditions, 8943 events. 5594/8943 cut-off events. For 179917/179917 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 57053 event pairs, 1550 based on Foata normal form. 4/8877 useless extension candidates. Maximal degree in co-relation 58228. Up to 4541 conditions per place. [2023-11-17 11:56:04,257 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 261 selfloop transitions, 119 changer transitions 4/384 dead transitions. [2023-11-17 11:56:04,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 384 transitions, 9207 flow [2023-11-17 11:56:04,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:04,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2023-11-17 11:56:04,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2023-11-17 11:56:04,258 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2023-11-17 11:56:04,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2023-11-17 11:56:04,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:04,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2023-11-17 11:56:04,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 11:56:04,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:04,259 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:04,259 INFO L175 Difference]: Start difference. First operand has 269 places, 314 transitions, 7914 flow. Second operand 7 states and 134 transitions. [2023-11-17 11:56:04,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 384 transitions, 9207 flow [2023-11-17 11:56:04,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 384 transitions, 8976 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 11:56:04,915 INFO L231 Difference]: Finished difference. Result has 272 places, 313 transitions, 7899 flow [2023-11-17 11:56:04,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7643, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7899, PETRI_PLACES=272, PETRI_TRANSITIONS=313} [2023-11-17 11:56:04,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2023-11-17 11:56:04,915 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 313 transitions, 7899 flow [2023-11-17 11:56:04,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:04,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:04,916 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:04,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-11-17 11:56:04,916 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:04,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:04,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1570028209, now seen corresponding path program 19 times [2023-11-17 11:56:04,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:04,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453698985] [2023-11-17 11:56:04,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:04,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:05,102 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:05,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:05,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453698985] [2023-11-17 11:56:05,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453698985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:05,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:05,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:05,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372677286] [2023-11-17 11:56:05,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:05,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:05,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:05,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:05,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:05,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:05,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 313 transitions, 7899 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:05,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:05,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:05,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:07,156 INFO L124 PetriNetUnfolderBase]: 5597/8938 cut-off events. [2023-11-17 11:56:07,156 INFO L125 PetriNetUnfolderBase]: For 180577/180577 co-relation queries the response was YES. [2023-11-17 11:56:07,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58370 conditions, 8938 events. 5597/8938 cut-off events. For 180577/180577 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 56954 event pairs, 1554 based on Foata normal form. 4/8872 useless extension candidates. Maximal degree in co-relation 58238. Up to 4541 conditions per place. [2023-11-17 11:56:07,245 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 257 selfloop transitions, 122 changer transitions 0/379 dead transitions. [2023-11-17 11:56:07,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 379 transitions, 9226 flow [2023-11-17 11:56:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2023-11-17 11:56:07,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3386243386243386 [2023-11-17 11:56:07,247 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 128 transitions. [2023-11-17 11:56:07,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 128 transitions. [2023-11-17 11:56:07,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:07,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 128 transitions. [2023-11-17 11:56:07,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 11:56:07,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:07,248 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:07,248 INFO L175 Difference]: Start difference. First operand has 272 places, 313 transitions, 7899 flow. Second operand 7 states and 128 transitions. [2023-11-17 11:56:07,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 379 transitions, 9226 flow [2023-11-17 11:56:07,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 379 transitions, 8970 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-11-17 11:56:07,914 INFO L231 Difference]: Finished difference. Result has 270 places, 316 transitions, 7944 flow [2023-11-17 11:56:07,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7609, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7944, PETRI_PLACES=270, PETRI_TRANSITIONS=316} [2023-11-17 11:56:07,914 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 240 predicate places. [2023-11-17 11:56:07,914 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 316 transitions, 7944 flow [2023-11-17 11:56:07,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:07,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:07,915 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:07,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-11-17 11:56:07,915 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:07,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:07,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1784181587, now seen corresponding path program 20 times [2023-11-17 11:56:07,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:07,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088791606] [2023-11-17 11:56:07,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:07,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:08,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:08,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088791606] [2023-11-17 11:56:08,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088791606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:08,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:08,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:56:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405180903] [2023-11-17 11:56:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:08,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:56:08,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:08,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:56:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:56:08,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:08,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 316 transitions, 7944 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:56:08,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:08,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:08,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:10,197 INFO L124 PetriNetUnfolderBase]: 5579/8906 cut-off events. [2023-11-17 11:56:10,197 INFO L125 PetriNetUnfolderBase]: For 184267/184267 co-relation queries the response was YES. [2023-11-17 11:56:10,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58793 conditions, 8906 events. 5579/8906 cut-off events. For 184267/184267 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 56628 event pairs, 1724 based on Foata normal form. 8/8844 useless extension candidates. Maximal degree in co-relation 58662. Up to 6094 conditions per place. [2023-11-17 11:56:10,286 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 258 selfloop transitions, 125 changer transitions 0/383 dead transitions. [2023-11-17 11:56:10,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 383 transitions, 9161 flow [2023-11-17 11:56:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:10,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2023-11-17 11:56:10,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2023-11-17 11:56:10,287 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2023-11-17 11:56:10,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2023-11-17 11:56:10,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:10,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2023-11-17 11:56:10,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 11:56:10,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:10,288 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:10,288 INFO L175 Difference]: Start difference. First operand has 270 places, 316 transitions, 7944 flow. Second operand 7 states and 139 transitions. [2023-11-17 11:56:10,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 383 transitions, 9161 flow [2023-11-17 11:56:10,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 383 transitions, 8954 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-17 11:56:10,943 INFO L231 Difference]: Finished difference. Result has 271 places, 317 transitions, 8014 flow [2023-11-17 11:56:10,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7715, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8014, PETRI_PLACES=271, PETRI_TRANSITIONS=317} [2023-11-17 11:56:10,943 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2023-11-17 11:56:10,943 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 317 transitions, 8014 flow [2023-11-17 11:56:10,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:56:10,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:10,944 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:10,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-11-17 11:56:10,944 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:10,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1590732413, now seen corresponding path program 21 times [2023-11-17 11:56:10,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:10,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888314881] [2023-11-17 11:56:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:10,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:11,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:11,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:11,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888314881] [2023-11-17 11:56:11,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888314881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:11,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:11,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:11,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097781791] [2023-11-17 11:56:11,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:11,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:11,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:11,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:11,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:11,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:11,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 317 transitions, 8014 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:11,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:11,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:11,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:13,203 INFO L124 PetriNetUnfolderBase]: 5563/8876 cut-off events. [2023-11-17 11:56:13,203 INFO L125 PetriNetUnfolderBase]: For 187166/187166 co-relation queries the response was YES. [2023-11-17 11:56:13,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58850 conditions, 8876 events. 5563/8876 cut-off events. For 187166/187166 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 56353 event pairs, 1746 based on Foata normal form. 6/8812 useless extension candidates. Maximal degree in co-relation 58720. Up to 6094 conditions per place. [2023-11-17 11:56:13,290 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 252 selfloop transitions, 121 changer transitions 6/379 dead transitions. [2023-11-17 11:56:13,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 379 transitions, 9159 flow [2023-11-17 11:56:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:13,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:13,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2023-11-17 11:56:13,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2023-11-17 11:56:13,291 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2023-11-17 11:56:13,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2023-11-17 11:56:13,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:13,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2023-11-17 11:56:13,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 11:56:13,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:13,292 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:13,292 INFO L175 Difference]: Start difference. First operand has 271 places, 317 transitions, 8014 flow. Second operand 7 states and 134 transitions. [2023-11-17 11:56:13,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 379 transitions, 9159 flow [2023-11-17 11:56:13,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 379 transitions, 8957 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:56:13,977 INFO L231 Difference]: Finished difference. Result has 274 places, 315 transitions, 7990 flow [2023-11-17 11:56:13,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7770, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7990, PETRI_PLACES=274, PETRI_TRANSITIONS=315} [2023-11-17 11:56:13,978 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2023-11-17 11:56:13,978 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 315 transitions, 7990 flow [2023-11-17 11:56:13,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:13,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:13,978 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:13,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-11-17 11:56:13,979 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:13,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash -789118569, now seen corresponding path program 22 times [2023-11-17 11:56:13,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:13,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986292371] [2023-11-17 11:56:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:13,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:14,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:14,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986292371] [2023-11-17 11:56:14,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986292371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:14,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:14,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:14,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478350527] [2023-11-17 11:56:14,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:14,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:14,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:14,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:14,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:14,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:14,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 315 transitions, 7990 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:14,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:14,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:14,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:16,094 INFO L124 PetriNetUnfolderBase]: 5542/8825 cut-off events. [2023-11-17 11:56:16,094 INFO L125 PetriNetUnfolderBase]: For 187834/187834 co-relation queries the response was YES. [2023-11-17 11:56:16,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58698 conditions, 8825 events. 5542/8825 cut-off events. For 187834/187834 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 55821 event pairs, 1732 based on Foata normal form. 4/8759 useless extension candidates. Maximal degree in co-relation 58568. Up to 6094 conditions per place. [2023-11-17 11:56:16,192 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 257 selfloop transitions, 123 changer transitions 0/380 dead transitions. [2023-11-17 11:56:16,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 380 transitions, 9177 flow [2023-11-17 11:56:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:16,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2023-11-17 11:56:16,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36243386243386244 [2023-11-17 11:56:16,193 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 137 transitions. [2023-11-17 11:56:16,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 137 transitions. [2023-11-17 11:56:16,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:16,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 137 transitions. [2023-11-17 11:56:16,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 11:56:16,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:16,194 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:16,194 INFO L175 Difference]: Start difference. First operand has 274 places, 315 transitions, 7990 flow. Second operand 7 states and 137 transitions. [2023-11-17 11:56:16,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 380 transitions, 9177 flow [2023-11-17 11:56:16,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 380 transitions, 8932 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 11:56:16,891 INFO L231 Difference]: Finished difference. Result has 273 places, 316 transitions, 7994 flow [2023-11-17 11:56:16,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7706, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7994, PETRI_PLACES=273, PETRI_TRANSITIONS=316} [2023-11-17 11:56:16,891 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2023-11-17 11:56:16,891 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 316 transitions, 7994 flow [2023-11-17 11:56:16,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:16,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:16,892 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:16,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-11-17 11:56:16,892 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:16,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash -20208545, now seen corresponding path program 23 times [2023-11-17 11:56:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:16,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912745247] [2023-11-17 11:56:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:16,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:17,167 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:17,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:17,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912745247] [2023-11-17 11:56:17,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912745247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:17,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:17,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:17,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645919655] [2023-11-17 11:56:17,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:17,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:17,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:17,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:17,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:17,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:17,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 316 transitions, 7994 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:17,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:17,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:17,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:19,256 INFO L124 PetriNetUnfolderBase]: 5526/8795 cut-off events. [2023-11-17 11:56:19,256 INFO L125 PetriNetUnfolderBase]: For 189431/189431 co-relation queries the response was YES. [2023-11-17 11:56:19,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59120 conditions, 8795 events. 5526/8795 cut-off events. For 189431/189431 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 55525 event pairs, 1740 based on Foata normal form. 6/8731 useless extension candidates. Maximal degree in co-relation 58990. Up to 6094 conditions per place. [2023-11-17 11:56:19,349 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 246 selfloop transitions, 120 changer transitions 6/372 dead transitions. [2023-11-17 11:56:19,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 372 transitions, 9115 flow [2023-11-17 11:56:19,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:19,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:19,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2023-11-17 11:56:19,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3386243386243386 [2023-11-17 11:56:19,350 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 128 transitions. [2023-11-17 11:56:19,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 128 transitions. [2023-11-17 11:56:19,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:19,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 128 transitions. [2023-11-17 11:56:19,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 11:56:19,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:19,351 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:19,351 INFO L175 Difference]: Start difference. First operand has 273 places, 316 transitions, 7994 flow. Second operand 7 states and 128 transitions. [2023-11-17 11:56:19,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 372 transitions, 9115 flow [2023-11-17 11:56:20,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 372 transitions, 8844 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 11:56:20,095 INFO L231 Difference]: Finished difference. Result has 275 places, 314 transitions, 7878 flow [2023-11-17 11:56:20,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7678, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7878, PETRI_PLACES=275, PETRI_TRANSITIONS=314} [2023-11-17 11:56:20,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-11-17 11:56:20,096 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 314 transitions, 7878 flow [2023-11-17 11:56:20,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:20,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:20,096 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:20,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-11-17 11:56:20,096 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:20,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:20,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1582586187, now seen corresponding path program 24 times [2023-11-17 11:56:20,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:20,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406166169] [2023-11-17 11:56:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:20,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:20,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:20,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406166169] [2023-11-17 11:56:20,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406166169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:20,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:20,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:20,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416055316] [2023-11-17 11:56:20,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:20,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:20,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:20,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:20,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:20,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 314 transitions, 7878 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:20,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:20,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:20,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:22,222 INFO L124 PetriNetUnfolderBase]: 5651/9010 cut-off events. [2023-11-17 11:56:22,222 INFO L125 PetriNetUnfolderBase]: For 191912/191912 co-relation queries the response was YES. [2023-11-17 11:56:22,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60444 conditions, 9010 events. 5651/9010 cut-off events. For 191912/191912 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 57413 event pairs, 1486 based on Foata normal form. 4/8944 useless extension candidates. Maximal degree in co-relation 60314. Up to 3577 conditions per place. [2023-11-17 11:56:22,318 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 294 selfloop transitions, 133 changer transitions 0/427 dead transitions. [2023-11-17 11:56:22,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 427 transitions, 10388 flow [2023-11-17 11:56:22,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:22,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 143 transitions. [2023-11-17 11:56:22,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783068783068783 [2023-11-17 11:56:22,319 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 143 transitions. [2023-11-17 11:56:22,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 143 transitions. [2023-11-17 11:56:22,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:22,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 143 transitions. [2023-11-17 11:56:22,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 11:56:22,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:22,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:22,320 INFO L175 Difference]: Start difference. First operand has 275 places, 314 transitions, 7878 flow. Second operand 7 states and 143 transitions. [2023-11-17 11:56:22,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 427 transitions, 10388 flow [2023-11-17 11:56:23,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 427 transitions, 10176 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-17 11:56:23,188 INFO L231 Difference]: Finished difference. Result has 280 places, 346 transitions, 9115 flow [2023-11-17 11:56:23,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=7691, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9115, PETRI_PLACES=280, PETRI_TRANSITIONS=346} [2023-11-17 11:56:23,189 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2023-11-17 11:56:23,189 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 346 transitions, 9115 flow [2023-11-17 11:56:23,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:23,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:23,189 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:23,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-11-17 11:56:23,189 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:23,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:23,189 INFO L85 PathProgramCache]: Analyzing trace with hash -829285081, now seen corresponding path program 20 times [2023-11-17 11:56:23,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:23,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531700572] [2023-11-17 11:56:23,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:23,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:23,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:23,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:23,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531700572] [2023-11-17 11:56:23,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531700572] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:23,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:23,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:23,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137018548] [2023-11-17 11:56:23,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:23,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:23,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:23,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:23,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:23,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 346 transitions, 9115 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:23,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:23,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:23,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:25,555 INFO L124 PetriNetUnfolderBase]: 5641/9000 cut-off events. [2023-11-17 11:56:25,555 INFO L125 PetriNetUnfolderBase]: For 207621/207621 co-relation queries the response was YES. [2023-11-17 11:56:25,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61884 conditions, 9000 events. 5641/9000 cut-off events. For 207621/207621 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 57351 event pairs, 1712 based on Foata normal form. 10/8940 useless extension candidates. Maximal degree in co-relation 61750. Up to 6647 conditions per place. [2023-11-17 11:56:25,655 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 277 selfloop transitions, 147 changer transitions 0/424 dead transitions. [2023-11-17 11:56:25,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 424 transitions, 10686 flow [2023-11-17 11:56:25,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2023-11-17 11:56:25,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2023-11-17 11:56:25,657 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 138 transitions. [2023-11-17 11:56:25,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 138 transitions. [2023-11-17 11:56:25,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:25,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 138 transitions. [2023-11-17 11:56:25,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 11:56:25,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:25,658 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:25,658 INFO L175 Difference]: Start difference. First operand has 280 places, 346 transitions, 9115 flow. Second operand 7 states and 138 transitions. [2023-11-17 11:56:25,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 424 transitions, 10686 flow [2023-11-17 11:56:26,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 424 transitions, 10439 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-11-17 11:56:26,499 INFO L231 Difference]: Finished difference. Result has 284 places, 349 transitions, 9243 flow [2023-11-17 11:56:26,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=8870, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9243, PETRI_PLACES=284, PETRI_TRANSITIONS=349} [2023-11-17 11:56:26,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2023-11-17 11:56:26,499 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 349 transitions, 9243 flow [2023-11-17 11:56:26,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:26,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:26,499 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:26,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-11-17 11:56:26,500 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:26,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1975464239, now seen corresponding path program 21 times [2023-11-17 11:56:26,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:26,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066616289] [2023-11-17 11:56:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:26,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:26,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:26,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:26,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066616289] [2023-11-17 11:56:26,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066616289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:26,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:26,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:26,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415990314] [2023-11-17 11:56:26,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:26,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:26,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:26,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:26,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:26,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:26,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 349 transitions, 9243 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:26,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:26,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:26,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:28,768 INFO L124 PetriNetUnfolderBase]: 5679/9114 cut-off events. [2023-11-17 11:56:28,768 INFO L125 PetriNetUnfolderBase]: For 206016/206016 co-relation queries the response was YES. [2023-11-17 11:56:28,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62113 conditions, 9114 events. 5679/9114 cut-off events. For 206016/206016 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 58799 event pairs, 1742 based on Foata normal form. 4/9048 useless extension candidates. Maximal degree in co-relation 61978. Up to 6647 conditions per place. [2023-11-17 11:56:28,865 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 275 selfloop transitions, 151 changer transitions 4/430 dead transitions. [2023-11-17 11:56:28,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 430 transitions, 11005 flow [2023-11-17 11:56:28,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:28,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:28,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2023-11-17 11:56:28,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439153439153439 [2023-11-17 11:56:28,867 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 130 transitions. [2023-11-17 11:56:28,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 130 transitions. [2023-11-17 11:56:28,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:28,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 130 transitions. [2023-11-17 11:56:28,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 11:56:28,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:28,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:28,867 INFO L175 Difference]: Start difference. First operand has 284 places, 349 transitions, 9243 flow. Second operand 7 states and 130 transitions. [2023-11-17 11:56:28,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 430 transitions, 11005 flow [2023-11-17 11:56:29,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 430 transitions, 10574 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-11-17 11:56:29,631 INFO L231 Difference]: Finished difference. Result has 289 places, 362 transitions, 9544 flow [2023-11-17 11:56:29,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=8839, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9544, PETRI_PLACES=289, PETRI_TRANSITIONS=362} [2023-11-17 11:56:29,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2023-11-17 11:56:29,632 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 362 transitions, 9544 flow [2023-11-17 11:56:29,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:29,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:29,632 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:29,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-11-17 11:56:29,632 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:29,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:29,632 INFO L85 PathProgramCache]: Analyzing trace with hash 649629503, now seen corresponding path program 22 times [2023-11-17 11:56:29,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:29,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293285272] [2023-11-17 11:56:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:29,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:29,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:29,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293285272] [2023-11-17 11:56:29,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293285272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:29,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:29,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:29,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763390230] [2023-11-17 11:56:29,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:29,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:29,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:29,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:29,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:29,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:29,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 362 transitions, 9544 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:29,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:29,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:29,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:32,142 INFO L124 PetriNetUnfolderBase]: 5656/9087 cut-off events. [2023-11-17 11:56:32,143 INFO L125 PetriNetUnfolderBase]: For 202418/202418 co-relation queries the response was YES. [2023-11-17 11:56:32,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62404 conditions, 9087 events. 5656/9087 cut-off events. For 202418/202418 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 58633 event pairs, 1742 based on Foata normal form. 20/9037 useless extension candidates. Maximal degree in co-relation 62266. Up to 6647 conditions per place. [2023-11-17 11:56:32,239 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 284 selfloop transitions, 154 changer transitions 0/438 dead transitions. [2023-11-17 11:56:32,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 438 transitions, 11094 flow [2023-11-17 11:56:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:32,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:32,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2023-11-17 11:56:32,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2023-11-17 11:56:32,240 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 141 transitions. [2023-11-17 11:56:32,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 141 transitions. [2023-11-17 11:56:32,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:32,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 141 transitions. [2023-11-17 11:56:32,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 11:56:32,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:32,241 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:32,241 INFO L175 Difference]: Start difference. First operand has 289 places, 362 transitions, 9544 flow. Second operand 7 states and 141 transitions. [2023-11-17 11:56:32,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 438 transitions, 11094 flow [2023-11-17 11:56:33,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 438 transitions, 10878 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-17 11:56:33,022 INFO L231 Difference]: Finished difference. Result has 293 places, 366 transitions, 9764 flow [2023-11-17 11:56:33,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9343, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9764, PETRI_PLACES=293, PETRI_TRANSITIONS=366} [2023-11-17 11:56:33,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2023-11-17 11:56:33,022 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 366 transitions, 9764 flow [2023-11-17 11:56:33,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:33,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:33,022 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:33,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-11-17 11:56:33,023 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:33,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:33,023 INFO L85 PathProgramCache]: Analyzing trace with hash -881372651, now seen corresponding path program 23 times [2023-11-17 11:56:33,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:33,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086236706] [2023-11-17 11:56:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:33,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:33,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:33,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086236706] [2023-11-17 11:56:33,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086236706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:33,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:33,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:33,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813346862] [2023-11-17 11:56:33,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:33,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:33,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:33,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:33,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:33,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:33,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 366 transitions, 9764 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:33,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:33,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:33,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:35,320 INFO L124 PetriNetUnfolderBase]: 5652/9083 cut-off events. [2023-11-17 11:56:35,321 INFO L125 PetriNetUnfolderBase]: For 204571/204571 co-relation queries the response was YES. [2023-11-17 11:56:35,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62309 conditions, 9083 events. 5652/9083 cut-off events. For 204571/204571 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 58603 event pairs, 1726 based on Foata normal form. 4/9017 useless extension candidates. Maximal degree in co-relation 62170. Up to 6647 conditions per place. [2023-11-17 11:56:35,422 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 274 selfloop transitions, 158 changer transitions 4/436 dead transitions. [2023-11-17 11:56:35,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 436 transitions, 11231 flow [2023-11-17 11:56:35,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:35,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:35,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2023-11-17 11:56:35,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2023-11-17 11:56:35,423 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 132 transitions. [2023-11-17 11:56:35,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 132 transitions. [2023-11-17 11:56:35,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:35,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 132 transitions. [2023-11-17 11:56:35,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 11:56:35,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:35,423 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:35,423 INFO L175 Difference]: Start difference. First operand has 293 places, 366 transitions, 9764 flow. Second operand 7 states and 132 transitions. [2023-11-17 11:56:35,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 436 transitions, 11231 flow [2023-11-17 11:56:36,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 436 transitions, 11011 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-11-17 11:56:36,364 INFO L231 Difference]: Finished difference. Result has 298 places, 367 transitions, 9888 flow [2023-11-17 11:56:36,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9504, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9888, PETRI_PLACES=298, PETRI_TRANSITIONS=367} [2023-11-17 11:56:36,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2023-11-17 11:56:36,365 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 367 transitions, 9888 flow [2023-11-17 11:56:36,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:36,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:36,365 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:36,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-11-17 11:56:36,365 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:36,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:36,366 INFO L85 PathProgramCache]: Analyzing trace with hash -755180645, now seen corresponding path program 24 times [2023-11-17 11:56:36,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:36,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040256473] [2023-11-17 11:56:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:36,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:36,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:36,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040256473] [2023-11-17 11:56:36,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040256473] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:36,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:36,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:36,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604465601] [2023-11-17 11:56:36,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:36,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:36,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:36,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:36,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:36,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 367 transitions, 9888 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:36,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:36,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:36,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:38,801 INFO L124 PetriNetUnfolderBase]: 5655/9086 cut-off events. [2023-11-17 11:56:38,802 INFO L125 PetriNetUnfolderBase]: For 208469/208469 co-relation queries the response was YES. [2023-11-17 11:56:38,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62570 conditions, 9086 events. 5655/9086 cut-off events. For 208469/208469 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 58657 event pairs, 1740 based on Foata normal form. 4/9020 useless extension candidates. Maximal degree in co-relation 62430. Up to 6647 conditions per place. [2023-11-17 11:56:38,898 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 281 selfloop transitions, 156 changer transitions 0/437 dead transitions. [2023-11-17 11:56:38,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 437 transitions, 11347 flow [2023-11-17 11:56:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:38,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2023-11-17 11:56:38,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2023-11-17 11:56:38,899 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 141 transitions. [2023-11-17 11:56:38,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 141 transitions. [2023-11-17 11:56:38,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:38,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 141 transitions. [2023-11-17 11:56:38,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 11:56:38,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:38,900 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:38,900 INFO L175 Difference]: Start difference. First operand has 298 places, 367 transitions, 9888 flow. Second operand 7 states and 141 transitions. [2023-11-17 11:56:38,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 437 transitions, 11347 flow [2023-11-17 11:56:39,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 437 transitions, 11129 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-11-17 11:56:39,737 INFO L231 Difference]: Finished difference. Result has 302 places, 370 transitions, 10094 flow [2023-11-17 11:56:39,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9675, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10094, PETRI_PLACES=302, PETRI_TRANSITIONS=370} [2023-11-17 11:56:39,738 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2023-11-17 11:56:39,738 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 370 transitions, 10094 flow [2023-11-17 11:56:39,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:39,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:39,738 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:39,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-11-17 11:56:39,738 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:39,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 403596865, now seen corresponding path program 25 times [2023-11-17 11:56:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:39,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691779423] [2023-11-17 11:56:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:39,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:39,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:39,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691779423] [2023-11-17 11:56:39,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691779423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:39,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:39,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:39,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112884639] [2023-11-17 11:56:39,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:39,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:39,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:39,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:39,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 370 transitions, 10094 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:39,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:39,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:39,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:42,159 INFO L124 PetriNetUnfolderBase]: 5663/9110 cut-off events. [2023-11-17 11:56:42,159 INFO L125 PetriNetUnfolderBase]: For 214231/214231 co-relation queries the response was YES. [2023-11-17 11:56:42,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62799 conditions, 9110 events. 5663/9110 cut-off events. For 214231/214231 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 58971 event pairs, 1728 based on Foata normal form. 8/9048 useless extension candidates. Maximal degree in co-relation 62658. Up to 6647 conditions per place. [2023-11-17 11:56:42,262 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 275 selfloop transitions, 159 changer transitions 1/435 dead transitions. [2023-11-17 11:56:42,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 435 transitions, 11525 flow [2023-11-17 11:56:42,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2023-11-17 11:56:42,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439153439153439 [2023-11-17 11:56:42,263 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 130 transitions. [2023-11-17 11:56:42,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 130 transitions. [2023-11-17 11:56:42,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:42,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 130 transitions. [2023-11-17 11:56:42,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 11:56:42,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:42,264 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:42,264 INFO L175 Difference]: Start difference. First operand has 302 places, 370 transitions, 10094 flow. Second operand 7 states and 130 transitions. [2023-11-17 11:56:42,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 435 transitions, 11525 flow [2023-11-17 11:56:43,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 435 transitions, 11128 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-11-17 11:56:43,105 INFO L231 Difference]: Finished difference. Result has 306 places, 372 transitions, 10065 flow [2023-11-17 11:56:43,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9655, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10065, PETRI_PLACES=306, PETRI_TRANSITIONS=372} [2023-11-17 11:56:43,105 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2023-11-17 11:56:43,105 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 372 transitions, 10065 flow [2023-11-17 11:56:43,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:43,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:43,105 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:43,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-11-17 11:56:43,106 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:43,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:43,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1479037817, now seen corresponding path program 26 times [2023-11-17 11:56:43,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:43,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140707154] [2023-11-17 11:56:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:43,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:43,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140707154] [2023-11-17 11:56:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140707154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:43,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:43,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643293480] [2023-11-17 11:56:43,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:43,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:43,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:43,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:43,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:43,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 372 transitions, 10065 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:43,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:43,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:43,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:45,487 INFO L124 PetriNetUnfolderBase]: 5656/9087 cut-off events. [2023-11-17 11:56:45,487 INFO L125 PetriNetUnfolderBase]: For 210016/210016 co-relation queries the response was YES. [2023-11-17 11:56:45,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62563 conditions, 9087 events. 5656/9087 cut-off events. For 210016/210016 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 58679 event pairs, 1740 based on Foata normal form. 4/9021 useless extension candidates. Maximal degree in co-relation 62420. Up to 6647 conditions per place. [2023-11-17 11:56:45,594 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 267 selfloop transitions, 159 changer transitions 0/426 dead transitions. [2023-11-17 11:56:45,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 426 transitions, 11352 flow [2023-11-17 11:56:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2023-11-17 11:56:45,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328042328042328 [2023-11-17 11:56:45,595 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 124 transitions. [2023-11-17 11:56:45,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 124 transitions. [2023-11-17 11:56:45,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:45,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 124 transitions. [2023-11-17 11:56:45,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 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 11:56:45,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:45,596 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:45,596 INFO L175 Difference]: Start difference. First operand has 306 places, 372 transitions, 10065 flow. Second operand 7 states and 124 transitions. [2023-11-17 11:56:45,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 426 transitions, 11352 flow [2023-11-17 11:56:46,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 426 transitions, 11157 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 11:56:46,464 INFO L231 Difference]: Finished difference. Result has 308 places, 371 transitions, 10153 flow [2023-11-17 11:56:46,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9835, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10153, PETRI_PLACES=308, PETRI_TRANSITIONS=371} [2023-11-17 11:56:46,465 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2023-11-17 11:56:46,465 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 371 transitions, 10153 flow [2023-11-17 11:56:46,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:46,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:46,465 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:46,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-11-17 11:56:46,465 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:46,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:46,466 INFO L85 PathProgramCache]: Analyzing trace with hash 519895377, now seen corresponding path program 25 times [2023-11-17 11:56:46,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:46,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792402410] [2023-11-17 11:56:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:46,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:46,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:46,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:46,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792402410] [2023-11-17 11:56:46,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792402410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:46,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:46,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:46,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684749989] [2023-11-17 11:56:46,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:46,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:46,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:46,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:46,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:46,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:46,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 371 transitions, 10153 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:46,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:46,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:46,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:48,942 INFO L124 PetriNetUnfolderBase]: 5594/8997 cut-off events. [2023-11-17 11:56:48,943 INFO L125 PetriNetUnfolderBase]: For 213187/213187 co-relation queries the response was YES. [2023-11-17 11:56:49,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62238 conditions, 8997 events. 5594/8997 cut-off events. For 213187/213187 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 58091 event pairs, 1478 based on Foata normal form. 42/8969 useless extension candidates. Maximal degree in co-relation 62096. Up to 3577 conditions per place. [2023-11-17 11:56:49,037 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 315 selfloop transitions, 133 changer transitions 1/449 dead transitions. [2023-11-17 11:56:49,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 449 transitions, 11661 flow [2023-11-17 11:56:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:49,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:49,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2023-11-17 11:56:49,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2023-11-17 11:56:49,038 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2023-11-17 11:56:49,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2023-11-17 11:56:49,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:49,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2023-11-17 11:56:49,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 11:56:49,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:49,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:49,039 INFO L175 Difference]: Start difference. First operand has 308 places, 371 transitions, 10153 flow. Second operand 7 states and 139 transitions. [2023-11-17 11:56:49,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 449 transitions, 11661 flow [2023-11-17 11:56:49,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 449 transitions, 11341 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 11:56:49,875 INFO L231 Difference]: Finished difference. Result has 311 places, 371 transitions, 10127 flow [2023-11-17 11:56:49,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9835, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10127, PETRI_PLACES=311, PETRI_TRANSITIONS=371} [2023-11-17 11:56:49,876 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2023-11-17 11:56:49,876 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 371 transitions, 10127 flow [2023-11-17 11:56:49,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:49,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:49,876 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:49,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-11-17 11:56:49,876 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:49,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:49,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1880866369, now seen corresponding path program 26 times [2023-11-17 11:56:49,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:49,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626524836] [2023-11-17 11:56:49,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:49,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:50,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:50,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626524836] [2023-11-17 11:56:50,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626524836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:50,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:50,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:50,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965194394] [2023-11-17 11:56:50,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:50,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:50,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:50,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:50,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 371 transitions, 10127 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:50,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:50,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:50,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:52,188 INFO L124 PetriNetUnfolderBase]: 5555/8910 cut-off events. [2023-11-17 11:56:52,188 INFO L125 PetriNetUnfolderBase]: For 215485/215485 co-relation queries the response was YES. [2023-11-17 11:56:52,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62350 conditions, 8910 events. 5555/8910 cut-off events. For 215485/215485 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 57232 event pairs, 1402 based on Foata normal form. 24/8864 useless extension candidates. Maximal degree in co-relation 62206. Up to 3577 conditions per place. [2023-11-17 11:56:52,301 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 278 selfloop transitions, 161 changer transitions 0/439 dead transitions. [2023-11-17 11:56:52,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 439 transitions, 11555 flow [2023-11-17 11:56:52,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:52,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2023-11-17 11:56:52,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35978835978835977 [2023-11-17 11:56:52,302 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 136 transitions. [2023-11-17 11:56:52,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 136 transitions. [2023-11-17 11:56:52,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:52,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 136 transitions. [2023-11-17 11:56:52,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:56:52,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:52,303 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:52,303 INFO L175 Difference]: Start difference. First operand has 311 places, 371 transitions, 10127 flow. Second operand 7 states and 136 transitions. [2023-11-17 11:56:52,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 439 transitions, 11555 flow [2023-11-17 11:56:53,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 439 transitions, 11315 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-17 11:56:53,321 INFO L231 Difference]: Finished difference. Result has 313 places, 370 transitions, 10216 flow [2023-11-17 11:56:53,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9839, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10216, PETRI_PLACES=313, PETRI_TRANSITIONS=370} [2023-11-17 11:56:53,321 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2023-11-17 11:56:53,321 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 370 transitions, 10216 flow [2023-11-17 11:56:53,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:53,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:53,321 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:53,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-11-17 11:56:53,322 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:53,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:53,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1590991607, now seen corresponding path program 27 times [2023-11-17 11:56:53,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:53,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335078415] [2023-11-17 11:56:53,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:53,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:53,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:53,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335078415] [2023-11-17 11:56:53,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335078415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:53,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:53,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:53,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265174546] [2023-11-17 11:56:53,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:53,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:53,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:53,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:53,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:53,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:53,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 370 transitions, 10216 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:53,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:53,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:53,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:55,621 INFO L124 PetriNetUnfolderBase]: 5537/8878 cut-off events. [2023-11-17 11:56:55,622 INFO L125 PetriNetUnfolderBase]: For 219512/219512 co-relation queries the response was YES. [2023-11-17 11:56:55,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62495 conditions, 8878 events. 5537/8878 cut-off events. For 219512/219512 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 56790 event pairs, 1392 based on Foata normal form. 8/8816 useless extension candidates. Maximal degree in co-relation 62352. Up to 3577 conditions per place. [2023-11-17 11:56:55,728 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 318 selfloop transitions, 132 changer transitions 0/450 dead transitions. [2023-11-17 11:56:55,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 450 transitions, 11747 flow [2023-11-17 11:56:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:55,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:55,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2023-11-17 11:56:55,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2023-11-17 11:56:55,729 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 138 transitions. [2023-11-17 11:56:55,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 138 transitions. [2023-11-17 11:56:55,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:55,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 138 transitions. [2023-11-17 11:56:55,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 11:56:55,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:55,730 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:55,730 INFO L175 Difference]: Start difference. First operand has 313 places, 370 transitions, 10216 flow. Second operand 7 states and 138 transitions. [2023-11-17 11:56:55,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 450 transitions, 11747 flow [2023-11-17 11:56:56,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 450 transitions, 11449 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 11:56:56,600 INFO L231 Difference]: Finished difference. Result has 316 places, 371 transitions, 10196 flow [2023-11-17 11:56:56,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9891, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10196, PETRI_PLACES=316, PETRI_TRANSITIONS=371} [2023-11-17 11:56:56,600 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2023-11-17 11:56:56,600 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 371 transitions, 10196 flow [2023-11-17 11:56:56,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:56,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:56,601 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:56:56,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-11-17 11:56:56,601 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:56,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash -482789697, now seen corresponding path program 27 times [2023-11-17 11:56:56,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:56,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31006817] [2023-11-17 11:56:56,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:56,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:56:56,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:56,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31006817] [2023-11-17 11:56:56,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31006817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:56:56,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:56:56,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:56:56,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662109495] [2023-11-17 11:56:56,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:56:56,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:56:56,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:56,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:56:56,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:56:56,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:56:56,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 371 transitions, 10196 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:56:56,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:56,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:56:56,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:58,959 INFO L124 PetriNetUnfolderBase]: 5527/8856 cut-off events. [2023-11-17 11:56:58,959 INFO L125 PetriNetUnfolderBase]: For 216987/216987 co-relation queries the response was YES. [2023-11-17 11:56:59,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62158 conditions, 8856 events. 5527/8856 cut-off events. For 216987/216987 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 56605 event pairs, 1684 based on Foata normal form. 4/8790 useless extension candidates. Maximal degree in co-relation 62014. Up to 6447 conditions per place. [2023-11-17 11:56:59,053 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 270 selfloop transitions, 159 changer transitions 4/433 dead transitions. [2023-11-17 11:56:59,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 433 transitions, 11511 flow [2023-11-17 11:56:59,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:56:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:56:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2023-11-17 11:56:59,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34656084656084657 [2023-11-17 11:56:59,054 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 131 transitions. [2023-11-17 11:56:59,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 131 transitions. [2023-11-17 11:56:59,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:59,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 131 transitions. [2023-11-17 11:56:59,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 11:56:59,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:59,055 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:56:59,055 INFO L175 Difference]: Start difference. First operand has 316 places, 371 transitions, 10196 flow. Second operand 7 states and 131 transitions. [2023-11-17 11:56:59,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 433 transitions, 11511 flow [2023-11-17 11:57:00,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 433 transitions, 11290 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 11:57:00,050 INFO L231 Difference]: Finished difference. Result has 319 places, 370 transitions, 10254 flow [2023-11-17 11:57:00,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9930, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10254, PETRI_PLACES=319, PETRI_TRANSITIONS=370} [2023-11-17 11:57:00,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2023-11-17 11:57:00,050 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 370 transitions, 10254 flow [2023-11-17 11:57:00,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:00,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:00,050 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:00,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-11-17 11:57:00,051 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:00,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1182088289, now seen corresponding path program 28 times [2023-11-17 11:57:00,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:00,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110553339] [2023-11-17 11:57:00,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:00,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:00,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110553339] [2023-11-17 11:57:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110553339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:00,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:00,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:00,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648280789] [2023-11-17 11:57:00,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:00,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:00,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:00,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 370 transitions, 10254 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:00,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:00,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:00,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:02,435 INFO L124 PetriNetUnfolderBase]: 5500/8797 cut-off events. [2023-11-17 11:57:02,436 INFO L125 PetriNetUnfolderBase]: For 216696/216696 co-relation queries the response was YES. [2023-11-17 11:57:02,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62114 conditions, 8797 events. 5500/8797 cut-off events. For 216696/216696 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 56099 event pairs, 1428 based on Foata normal form. 16/8743 useless extension candidates. Maximal degree in co-relation 61970. Up to 3577 conditions per place. [2023-11-17 11:57:02,540 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 311 selfloop transitions, 136 changer transitions 0/447 dead transitions. [2023-11-17 11:57:02,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 447 transitions, 11781 flow [2023-11-17 11:57:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2023-11-17 11:57:02,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2023-11-17 11:57:02,541 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 141 transitions. [2023-11-17 11:57:02,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 141 transitions. [2023-11-17 11:57:02,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:02,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 141 transitions. [2023-11-17 11:57:02,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 11:57:02,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:02,541 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:02,541 INFO L175 Difference]: Start difference. First operand has 319 places, 370 transitions, 10254 flow. Second operand 7 states and 141 transitions. [2023-11-17 11:57:02,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 447 transitions, 11781 flow [2023-11-17 11:57:03,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 447 transitions, 11447 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-17 11:57:03,547 INFO L231 Difference]: Finished difference. Result has 321 places, 373 transitions, 10312 flow [2023-11-17 11:57:03,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=9928, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10312, PETRI_PLACES=321, PETRI_TRANSITIONS=373} [2023-11-17 11:57:03,548 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2023-11-17 11:57:03,548 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 373 transitions, 10312 flow [2023-11-17 11:57:03,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:03,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:03,548 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:03,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-11-17 11:57:03,548 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:03,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:03,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1396241667, now seen corresponding path program 28 times [2023-11-17 11:57:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512023384] [2023-11-17 11:57:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:03,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:03,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:03,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512023384] [2023-11-17 11:57:03,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512023384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:03,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:03,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:03,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149717191] [2023-11-17 11:57:03,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:03,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:03,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:03,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:03,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 373 transitions, 10312 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:03,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:03,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:03,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:05,723 INFO L124 PetriNetUnfolderBase]: 5490/8767 cut-off events. [2023-11-17 11:57:05,723 INFO L125 PetriNetUnfolderBase]: For 214033/214033 co-relation queries the response was YES. [2023-11-17 11:57:05,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61334 conditions, 8767 events. 5490/8767 cut-off events. For 214033/214033 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 55662 event pairs, 1654 based on Foata normal form. 4/8701 useless extension candidates. Maximal degree in co-relation 61188. Up to 6395 conditions per place. [2023-11-17 11:57:05,833 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 285 selfloop transitions, 156 changer transitions 0/441 dead transitions. [2023-11-17 11:57:05,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 441 transitions, 11676 flow [2023-11-17 11:57:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2023-11-17 11:57:05,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2023-11-17 11:57:05,834 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2023-11-17 11:57:05,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2023-11-17 11:57:05,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:05,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2023-11-17 11:57:05,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 11:57:05,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:05,835 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:05,835 INFO L175 Difference]: Start difference. First operand has 321 places, 373 transitions, 10312 flow. Second operand 7 states and 139 transitions. [2023-11-17 11:57:05,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 441 transitions, 11676 flow [2023-11-17 11:57:06,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 441 transitions, 11413 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-17 11:57:06,817 INFO L231 Difference]: Finished difference. Result has 323 places, 375 transitions, 10390 flow [2023-11-17 11:57:06,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=10016, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10390, PETRI_PLACES=323, PETRI_TRANSITIONS=375} [2023-11-17 11:57:06,818 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2023-11-17 11:57:06,818 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 375 transitions, 10390 flow [2023-11-17 11:57:06,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:06,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:06,818 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:06,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-11-17 11:57:06,818 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:06,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:06,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1261292519, now seen corresponding path program 29 times [2023-11-17 11:57:06,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:06,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343339149] [2023-11-17 11:57:06,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:06,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:07,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:07,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:07,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343339149] [2023-11-17 11:57:07,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343339149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:07,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:07,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:07,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616033251] [2023-11-17 11:57:07,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:07,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:07,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:07,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:07,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:07,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:07,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 375 transitions, 10390 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:07,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:07,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:07,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:09,046 INFO L124 PetriNetUnfolderBase]: 5474/8737 cut-off events. [2023-11-17 11:57:09,046 INFO L125 PetriNetUnfolderBase]: For 218225/218225 co-relation queries the response was YES. [2023-11-17 11:57:09,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61908 conditions, 8737 events. 5474/8737 cut-off events. For 218225/218225 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 55329 event pairs, 1362 based on Foata normal form. 6/8673 useless extension candidates. Maximal degree in co-relation 61762. Up to 3577 conditions per place. [2023-11-17 11:57:09,152 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 314 selfloop transitions, 127 changer transitions 6/447 dead transitions. [2023-11-17 11:57:09,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 447 transitions, 11844 flow [2023-11-17 11:57:09,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:09,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2023-11-17 11:57:09,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34656084656084657 [2023-11-17 11:57:09,153 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 131 transitions. [2023-11-17 11:57:09,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 131 transitions. [2023-11-17 11:57:09,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:09,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 131 transitions. [2023-11-17 11:57:09,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 11:57:09,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:09,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:09,154 INFO L175 Difference]: Start difference. First operand has 323 places, 375 transitions, 10390 flow. Second operand 7 states and 131 transitions. [2023-11-17 11:57:09,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 447 transitions, 11844 flow [2023-11-17 11:57:10,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 447 transitions, 11566 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 11:57:10,193 INFO L231 Difference]: Finished difference. Result has 327 places, 374 transitions, 10345 flow [2023-11-17 11:57:10,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=10077, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10345, PETRI_PLACES=327, PETRI_TRANSITIONS=374} [2023-11-17 11:57:10,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2023-11-17 11:57:10,194 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 374 transitions, 10345 flow [2023-11-17 11:57:10,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:10,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:10,194 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:10,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-11-17 11:57:10,194 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:10,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:10,194 INFO L85 PathProgramCache]: Analyzing trace with hash -583023287, now seen corresponding path program 30 times [2023-11-17 11:57:10,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:10,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440522492] [2023-11-17 11:57:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:10,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:10,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440522492] [2023-11-17 11:57:10,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440522492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:10,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:10,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:10,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652336111] [2023-11-17 11:57:10,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:10,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:10,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:10,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:10,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:10,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:10,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 374 transitions, 10345 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:10,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:10,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:10,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:12,453 INFO L124 PetriNetUnfolderBase]: 5473/8724 cut-off events. [2023-11-17 11:57:12,453 INFO L125 PetriNetUnfolderBase]: For 218174/218174 co-relation queries the response was YES. [2023-11-17 11:57:12,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61773 conditions, 8724 events. 5473/8724 cut-off events. For 218174/218174 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 55235 event pairs, 1430 based on Foata normal form. 8/8662 useless extension candidates. Maximal degree in co-relation 61626. Up to 3577 conditions per place. [2023-11-17 11:57:12,558 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 304 selfloop transitions, 143 changer transitions 0/447 dead transitions. [2023-11-17 11:57:12,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 447 transitions, 11841 flow [2023-11-17 11:57:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:12,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:12,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2023-11-17 11:57:12,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2023-11-17 11:57:12,559 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 141 transitions. [2023-11-17 11:57:12,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 141 transitions. [2023-11-17 11:57:12,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:12,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 141 transitions. [2023-11-17 11:57:12,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 11:57:12,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:12,560 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:12,560 INFO L175 Difference]: Start difference. First operand has 327 places, 374 transitions, 10345 flow. Second operand 7 states and 141 transitions. [2023-11-17 11:57:12,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 447 transitions, 11841 flow [2023-11-17 11:57:13,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 447 transitions, 11550 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-11-17 11:57:13,495 INFO L231 Difference]: Finished difference. Result has 324 places, 376 transitions, 10462 flow [2023-11-17 11:57:13,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=10033, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10462, PETRI_PLACES=324, PETRI_TRANSITIONS=376} [2023-11-17 11:57:13,495 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2023-11-17 11:57:13,495 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 376 transitions, 10462 flow [2023-11-17 11:57:13,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:13,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:13,495 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:13,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-11-17 11:57:13,496 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:13,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash -2117815989, now seen corresponding path program 31 times [2023-11-17 11:57:13,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:13,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385135937] [2023-11-17 11:57:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:13,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:13,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:13,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385135937] [2023-11-17 11:57:13,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385135937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:13,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:13,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:13,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096988866] [2023-11-17 11:57:13,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:13,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:13,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:13,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:13,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:13,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:13,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 376 transitions, 10462 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:13,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:13,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:13,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:15,823 INFO L124 PetriNetUnfolderBase]: 5461/8692 cut-off events. [2023-11-17 11:57:15,823 INFO L125 PetriNetUnfolderBase]: For 216224/216224 co-relation queries the response was YES. [2023-11-17 11:57:15,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61790 conditions, 8692 events. 5461/8692 cut-off events. For 216224/216224 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 54808 event pairs, 1434 based on Foata normal form. 4/8626 useless extension candidates. Maximal degree in co-relation 61644. Up to 3577 conditions per place. [2023-11-17 11:57:15,913 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 307 selfloop transitions, 139 changer transitions 0/446 dead transitions. [2023-11-17 11:57:15,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 446 transitions, 11898 flow [2023-11-17 11:57:15,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:15,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:15,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2023-11-17 11:57:15,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2023-11-17 11:57:15,914 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 135 transitions. [2023-11-17 11:57:15,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 135 transitions. [2023-11-17 11:57:15,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:15,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 135 transitions. [2023-11-17 11:57:15,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 11:57:15,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:15,915 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:15,915 INFO L175 Difference]: Start difference. First operand has 324 places, 376 transitions, 10462 flow. Second operand 7 states and 135 transitions. [2023-11-17 11:57:15,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 446 transitions, 11898 flow [2023-11-17 11:57:16,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 446 transitions, 11634 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 11:57:16,776 INFO L231 Difference]: Finished difference. Result has 326 places, 380 transitions, 10606 flow [2023-11-17 11:57:16,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=10161, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10606, PETRI_PLACES=326, PETRI_TRANSITIONS=380} [2023-11-17 11:57:16,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2023-11-17 11:57:16,777 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 380 transitions, 10606 flow [2023-11-17 11:57:16,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:16,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:16,777 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:16,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-11-17 11:57:16,777 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:16,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:16,778 INFO L85 PathProgramCache]: Analyzing trace with hash -819293231, now seen corresponding path program 29 times [2023-11-17 11:57:16,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:16,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118937014] [2023-11-17 11:57:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:16,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:16,961 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:16,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:16,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118937014] [2023-11-17 11:57:16,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118937014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:16,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:16,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:16,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922983299] [2023-11-17 11:57:16,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:16,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:16,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:16,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:16,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:16,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:16,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 380 transitions, 10606 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:16,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:16,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:16,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:19,096 INFO L124 PetriNetUnfolderBase]: 5439/8646 cut-off events. [2023-11-17 11:57:19,097 INFO L125 PetriNetUnfolderBase]: For 221848/221848 co-relation queries the response was YES. [2023-11-17 11:57:19,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62364 conditions, 8646 events. 5439/8646 cut-off events. For 221848/221848 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 54355 event pairs, 1626 based on Foata normal form. 10/8586 useless extension candidates. Maximal degree in co-relation 62218. Up to 6321 conditions per place. [2023-11-17 11:57:19,199 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 282 selfloop transitions, 158 changer transitions 0/440 dead transitions. [2023-11-17 11:57:19,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 440 transitions, 11891 flow [2023-11-17 11:57:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:19,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2023-11-17 11:57:19,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2023-11-17 11:57:19,200 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2023-11-17 11:57:19,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2023-11-17 11:57:19,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:19,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2023-11-17 11:57:19,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 11:57:19,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:19,201 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:19,201 INFO L175 Difference]: Start difference. First operand has 326 places, 380 transitions, 10606 flow. Second operand 7 states and 139 transitions. [2023-11-17 11:57:19,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 440 transitions, 11891 flow [2023-11-17 11:57:20,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 440 transitions, 11665 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 11:57:20,227 INFO L231 Difference]: Finished difference. Result has 328 places, 379 transitions, 10682 flow [2023-11-17 11:57:20,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=10341, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10682, PETRI_PLACES=328, PETRI_TRANSITIONS=379} [2023-11-17 11:57:20,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2023-11-17 11:57:20,228 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 379 transitions, 10682 flow [2023-11-17 11:57:20,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:20,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:20,228 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:20,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-11-17 11:57:20,228 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:20,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1091045581, now seen corresponding path program 32 times [2023-11-17 11:57:20,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:20,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984536667] [2023-11-17 11:57:20,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:20,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:20,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:20,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984536667] [2023-11-17 11:57:20,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984536667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:20,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:20,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:20,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132363454] [2023-11-17 11:57:20,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:20,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:20,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:20,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:20,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:20,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 379 transitions, 10682 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:20,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:20,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:20,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:22,568 INFO L124 PetriNetUnfolderBase]: 5423/8616 cut-off events. [2023-11-17 11:57:22,568 INFO L125 PetriNetUnfolderBase]: For 224066/224066 co-relation queries the response was YES. [2023-11-17 11:57:22,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62331 conditions, 8616 events. 5423/8616 cut-off events. For 224066/224066 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 54093 event pairs, 1416 based on Foata normal form. 6/8552 useless extension candidates. Maximal degree in co-relation 62186. Up to 3577 conditions per place. [2023-11-17 11:57:22,662 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 296 selfloop transitions, 135 changer transitions 6/437 dead transitions. [2023-11-17 11:57:22,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 437 transitions, 11983 flow [2023-11-17 11:57:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2023-11-17 11:57:22,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2023-11-17 11:57:22,662 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 126 transitions. [2023-11-17 11:57:22,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 126 transitions. [2023-11-17 11:57:22,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:22,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 126 transitions. [2023-11-17 11:57:22,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 11:57:22,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:22,663 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:22,663 INFO L175 Difference]: Start difference. First operand has 328 places, 379 transitions, 10682 flow. Second operand 7 states and 126 transitions. [2023-11-17 11:57:22,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 437 transitions, 11983 flow [2023-11-17 11:57:23,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 437 transitions, 11768 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:57:23,613 INFO L231 Difference]: Finished difference. Result has 331 places, 377 transitions, 10658 flow [2023-11-17 11:57:23,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=10427, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10658, PETRI_PLACES=331, PETRI_TRANSITIONS=377} [2023-11-17 11:57:23,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2023-11-17 11:57:23,614 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 377 transitions, 10658 flow [2023-11-17 11:57:23,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:23,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:23,614 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:23,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-11-17 11:57:23,614 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:23,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:23,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1923483717, now seen corresponding path program 30 times [2023-11-17 11:57:23,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:23,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388041278] [2023-11-17 11:57:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:23,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:23,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:23,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:23,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388041278] [2023-11-17 11:57:23,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388041278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:23,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:23,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:23,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901331126] [2023-11-17 11:57:23,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:23,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:23,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:23,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:23,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 377 transitions, 10658 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:23,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:23,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:23,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:25,844 INFO L124 PetriNetUnfolderBase]: 5412/8587 cut-off events. [2023-11-17 11:57:25,844 INFO L125 PetriNetUnfolderBase]: For 227397/227397 co-relation queries the response was YES. [2023-11-17 11:57:25,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62065 conditions, 8587 events. 5412/8587 cut-off events. For 227397/227397 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 53746 event pairs, 1626 based on Foata normal form. 4/8521 useless extension candidates. Maximal degree in co-relation 61920. Up to 6291 conditions per place. [2023-11-17 11:57:25,952 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 280 selfloop transitions, 152 changer transitions 4/436 dead transitions. [2023-11-17 11:57:25,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 436 transitions, 11944 flow [2023-11-17 11:57:25,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:25,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2023-11-17 11:57:25,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2023-11-17 11:57:25,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 132 transitions. [2023-11-17 11:57:25,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 132 transitions. [2023-11-17 11:57:25,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:25,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 132 transitions. [2023-11-17 11:57:25,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 11:57:25,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:25,958 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:25,958 INFO L175 Difference]: Start difference. First operand has 331 places, 377 transitions, 10658 flow. Second operand 7 states and 132 transitions. [2023-11-17 11:57:25,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 436 transitions, 11944 flow [2023-11-17 11:57:27,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 436 transitions, 11668 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-17 11:57:27,089 INFO L231 Difference]: Finished difference. Result has 332 places, 376 transitions, 10647 flow [2023-11-17 11:57:27,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=10382, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10647, PETRI_PLACES=332, PETRI_TRANSITIONS=376} [2023-11-17 11:57:27,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2023-11-17 11:57:27,090 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 376 transitions, 10647 flow [2023-11-17 11:57:27,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:27,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:27,090 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:27,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-11-17 11:57:27,090 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:27,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash -898306095, now seen corresponding path program 31 times [2023-11-17 11:57:27,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:27,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894272736] [2023-11-17 11:57:27,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:27,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:27,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:27,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894272736] [2023-11-17 11:57:27,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894272736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:27,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435137807] [2023-11-17 11:57:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:27,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:27,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 376 transitions, 10647 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:27,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:27,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:27,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:29,383 INFO L124 PetriNetUnfolderBase]: 5401/8560 cut-off events. [2023-11-17 11:57:29,384 INFO L125 PetriNetUnfolderBase]: For 226718/226718 co-relation queries the response was YES. [2023-11-17 11:57:29,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61990 conditions, 8560 events. 5401/8560 cut-off events. For 226718/226718 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 53393 event pairs, 1624 based on Foata normal form. 4/8494 useless extension candidates. Maximal degree in co-relation 61860. Up to 6291 conditions per place. [2023-11-17 11:57:29,495 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 277 selfloop transitions, 151 changer transitions 4/432 dead transitions. [2023-11-17 11:57:29,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 432 transitions, 11865 flow [2023-11-17 11:57:29,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:29,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2023-11-17 11:57:29,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439153439153439 [2023-11-17 11:57:29,496 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 130 transitions. [2023-11-17 11:57:29,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 130 transitions. [2023-11-17 11:57:29,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:29,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 130 transitions. [2023-11-17 11:57:29,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 11:57:29,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:29,496 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:29,496 INFO L175 Difference]: Start difference. First operand has 332 places, 376 transitions, 10647 flow. Second operand 7 states and 130 transitions. [2023-11-17 11:57:29,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 432 transitions, 11865 flow [2023-11-17 11:57:30,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 432 transitions, 11575 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-17 11:57:30,581 INFO L231 Difference]: Finished difference. Result has 331 places, 374 transitions, 10580 flow [2023-11-17 11:57:30,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=10302, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10580, PETRI_PLACES=331, PETRI_TRANSITIONS=374} [2023-11-17 11:57:30,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2023-11-17 11:57:30,581 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 374 transitions, 10580 flow [2023-11-17 11:57:30,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:30,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:30,581 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:30,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-11-17 11:57:30,582 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:30,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:30,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2101680709, now seen corresponding path program 32 times [2023-11-17 11:57:30,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:30,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485027267] [2023-11-17 11:57:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:30,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:30,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:30,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485027267] [2023-11-17 11:57:30,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485027267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:30,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:30,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:57:30,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658359048] [2023-11-17 11:57:30,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:30,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:57:30,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:30,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:57:30,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:57:30,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:30,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 374 transitions, 10580 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:57:30,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:30,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:30,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:33,373 INFO L124 PetriNetUnfolderBase]: 6650/10621 cut-off events. [2023-11-17 11:57:33,373 INFO L125 PetriNetUnfolderBase]: For 253992/253992 co-relation queries the response was YES. [2023-11-17 11:57:33,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73094 conditions, 10621 events. 6650/10621 cut-off events. For 253992/253992 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 70214 event pairs, 1233 based on Foata normal form. 10/10561 useless extension candidates. Maximal degree in co-relation 72966. Up to 5689 conditions per place. [2023-11-17 11:57:33,488 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 414 selfloop transitions, 88 changer transitions 3/505 dead transitions. [2023-11-17 11:57:33,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 505 transitions, 13522 flow [2023-11-17 11:57:33,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:33,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2023-11-17 11:57:33,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2023-11-17 11:57:33,489 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2023-11-17 11:57:33,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2023-11-17 11:57:33,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:33,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2023-11-17 11:57:33,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 11:57:33,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:33,490 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:33,490 INFO L175 Difference]: Start difference. First operand has 331 places, 374 transitions, 10580 flow. Second operand 7 states and 139 transitions. [2023-11-17 11:57:33,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 505 transitions, 13522 flow [2023-11-17 11:57:34,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 505 transitions, 13159 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-11-17 11:57:34,688 INFO L231 Difference]: Finished difference. Result has 334 places, 402 transitions, 11253 flow [2023-11-17 11:57:34,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=10271, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11253, PETRI_PLACES=334, PETRI_TRANSITIONS=402} [2023-11-17 11:57:34,689 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2023-11-17 11:57:34,689 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 402 transitions, 11253 flow [2023-11-17 11:57:34,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:57:34,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:34,689 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:34,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-11-17 11:57:34,689 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:34,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:34,689 INFO L85 PathProgramCache]: Analyzing trace with hash -397490929, now seen corresponding path program 33 times [2023-11-17 11:57:34,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:34,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631612704] [2023-11-17 11:57:34,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:34,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:34,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:34,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631612704] [2023-11-17 11:57:34,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631612704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:34,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:34,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:34,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937830936] [2023-11-17 11:57:34,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:34,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:34,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:34,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:34,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:34,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:34,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 402 transitions, 11253 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:34,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:34,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:34,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:37,505 INFO L124 PetriNetUnfolderBase]: 6782/10893 cut-off events. [2023-11-17 11:57:37,506 INFO L125 PetriNetUnfolderBase]: For 267815/267815 co-relation queries the response was YES. [2023-11-17 11:57:37,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75937 conditions, 10893 events. 6782/10893 cut-off events. For 267815/267815 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 72904 event pairs, 2946 based on Foata normal form. 6/10829 useless extension candidates. Maximal degree in co-relation 75806. Up to 8073 conditions per place. [2023-11-17 11:57:37,632 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 347 selfloop transitions, 125 changer transitions 9/481 dead transitions. [2023-11-17 11:57:37,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 481 transitions, 13188 flow [2023-11-17 11:57:37,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2023-11-17 11:57:37,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.335978835978836 [2023-11-17 11:57:37,633 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 127 transitions. [2023-11-17 11:57:37,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 127 transitions. [2023-11-17 11:57:37,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:37,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 127 transitions. [2023-11-17 11:57:37,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.142857142857142) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 11:57:37,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:37,634 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:37,634 INFO L175 Difference]: Start difference. First operand has 334 places, 402 transitions, 11253 flow. Second operand 7 states and 127 transitions. [2023-11-17 11:57:37,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 481 transitions, 13188 flow [2023-11-17 11:57:38,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 481 transitions, 13095 flow, removed 36 selfloop flow, removed 1 redundant places. [2023-11-17 11:57:39,007 INFO L231 Difference]: Finished difference. Result has 343 places, 414 transitions, 11787 flow [2023-11-17 11:57:39,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=11160, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11787, PETRI_PLACES=343, PETRI_TRANSITIONS=414} [2023-11-17 11:57:39,008 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2023-11-17 11:57:39,008 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 414 transitions, 11787 flow [2023-11-17 11:57:39,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:39,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:39,008 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:39,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-11-17 11:57:39,008 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:39,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:39,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1139119395, now seen corresponding path program 34 times [2023-11-17 11:57:39,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:39,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481031928] [2023-11-17 11:57:39,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:39,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:39,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:39,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481031928] [2023-11-17 11:57:39,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481031928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:39,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:39,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:39,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954905851] [2023-11-17 11:57:39,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:39,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:39,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:39,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:39,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 414 transitions, 11787 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:39,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:39,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:39,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:41,919 INFO L124 PetriNetUnfolderBase]: 6766/10863 cut-off events. [2023-11-17 11:57:41,920 INFO L125 PetriNetUnfolderBase]: For 270861/270861 co-relation queries the response was YES. [2023-11-17 11:57:42,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76052 conditions, 10863 events. 6766/10863 cut-off events. For 270861/270861 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 72273 event pairs, 3008 based on Foata normal form. 8/10801 useless extension candidates. Maximal degree in co-relation 75917. Up to 8073 conditions per place. [2023-11-17 11:57:42,043 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 344 selfloop transitions, 134 changer transitions 0/478 dead transitions. [2023-11-17 11:57:42,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 478 transitions, 13246 flow [2023-11-17 11:57:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2023-11-17 11:57:42,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2023-11-17 11:57:42,044 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2023-11-17 11:57:42,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2023-11-17 11:57:42,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:42,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2023-11-17 11:57:42,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 11:57:42,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:42,045 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:42,045 INFO L175 Difference]: Start difference. First operand has 343 places, 414 transitions, 11787 flow. Second operand 7 states and 134 transitions. [2023-11-17 11:57:42,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 478 transitions, 13246 flow [2023-11-17 11:57:43,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 478 transitions, 13009 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-17 11:57:43,551 INFO L231 Difference]: Finished difference. Result has 345 places, 415 transitions, 11847 flow [2023-11-17 11:57:43,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=11559, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11847, PETRI_PLACES=345, PETRI_TRANSITIONS=415} [2023-11-17 11:57:43,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2023-11-17 11:57:43,551 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 415 transitions, 11847 flow [2023-11-17 11:57:43,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:43,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:43,551 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:43,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-11-17 11:57:43,552 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:43,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:43,552 INFO L85 PathProgramCache]: Analyzing trace with hash -834104565, now seen corresponding path program 35 times [2023-11-17 11:57:43,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107035994] [2023-11-17 11:57:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:43,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:43,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:43,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107035994] [2023-11-17 11:57:43,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107035994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:43,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:43,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:43,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053622563] [2023-11-17 11:57:43,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:43,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:43,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:43,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:43,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:43,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:43,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 415 transitions, 11847 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:43,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:43,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:43,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:46,768 INFO L124 PetriNetUnfolderBase]: 6742/10811 cut-off events. [2023-11-17 11:57:46,769 INFO L125 PetriNetUnfolderBase]: For 271565/271565 co-relation queries the response was YES. [2023-11-17 11:57:46,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76059 conditions, 10811 events. 6742/10811 cut-off events. For 271565/271565 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 71956 event pairs, 2934 based on Foata normal form. 4/10745 useless extension candidates. Maximal degree in co-relation 75925. Up to 8073 conditions per place. [2023-11-17 11:57:46,896 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 358 selfloop transitions, 124 changer transitions 0/482 dead transitions. [2023-11-17 11:57:46,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 482 transitions, 13425 flow [2023-11-17 11:57:46,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:46,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2023-11-17 11:57:46,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3544973544973545 [2023-11-17 11:57:46,897 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 134 transitions. [2023-11-17 11:57:46,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 134 transitions. [2023-11-17 11:57:46,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:46,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 134 transitions. [2023-11-17 11:57:46,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 0 states have call successors, (0), 0 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 11:57:46,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:46,898 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:46,898 INFO L175 Difference]: Start difference. First operand has 345 places, 415 transitions, 11847 flow. Second operand 7 states and 134 transitions. [2023-11-17 11:57:46,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 482 transitions, 13425 flow [2023-11-17 11:57:48,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 482 transitions, 13137 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-17 11:57:48,462 INFO L231 Difference]: Finished difference. Result has 348 places, 417 transitions, 11917 flow [2023-11-17 11:57:48,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=11551, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11917, PETRI_PLACES=348, PETRI_TRANSITIONS=417} [2023-11-17 11:57:48,462 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2023-11-17 11:57:48,462 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 417 transitions, 11917 flow [2023-11-17 11:57:48,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:48,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:48,463 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:48,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-11-17 11:57:48,463 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:48,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:48,463 INFO L85 PathProgramCache]: Analyzing trace with hash -540717119, now seen corresponding path program 33 times [2023-11-17 11:57:48,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:48,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776125455] [2023-11-17 11:57:48,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:48,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:48,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:48,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:48,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776125455] [2023-11-17 11:57:48,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776125455] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:57:48,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243757729] [2023-11-17 11:57:48,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:57:48,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:57:48,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:57:48,626 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:57:48,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 11:57:48,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 11:57:48,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:57:48,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:57:48,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:57:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:48,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:57:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:48,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243757729] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:57:48,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:57:48,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 11:57:48,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287684004] [2023-11-17 11:57:48,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:57:48,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 11:57:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 11:57:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-17 11:57:48,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:48,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 417 transitions, 11917 flow. Second operand has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 11:57:48,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:48,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:48,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:51,840 INFO L124 PetriNetUnfolderBase]: 6716/10749 cut-off events. [2023-11-17 11:57:51,841 INFO L125 PetriNetUnfolderBase]: For 267430/267430 co-relation queries the response was YES. [2023-11-17 11:57:51,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75867 conditions, 10749 events. 6716/10749 cut-off events. For 267430/267430 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 71419 event pairs, 1534 based on Foata normal form. 8/10687 useless extension candidates. Maximal degree in co-relation 75731. Up to 5484 conditions per place. [2023-11-17 11:57:51,979 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 372 selfloop transitions, 120 changer transitions 2/494 dead transitions. [2023-11-17 11:57:51,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 494 transitions, 13649 flow [2023-11-17 11:57:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:51,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2023-11-17 11:57:51,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2023-11-17 11:57:51,980 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2023-11-17 11:57:51,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2023-11-17 11:57:51,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:51,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2023-11-17 11:57:51,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 11:57:51,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:51,981 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:51,981 INFO L175 Difference]: Start difference. First operand has 348 places, 417 transitions, 11917 flow. Second operand 7 states and 139 transitions. [2023-11-17 11:57:51,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 494 transitions, 13649 flow [2023-11-17 11:57:53,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 494 transitions, 13407 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 11:57:53,772 INFO L231 Difference]: Finished difference. Result has 353 places, 420 transitions, 12039 flow [2023-11-17 11:57:53,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=11617, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12039, PETRI_PLACES=353, PETRI_TRANSITIONS=420} [2023-11-17 11:57:53,772 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2023-11-17 11:57:53,772 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 420 transitions, 12039 flow [2023-11-17 11:57:53,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.533333333333333) internal successors, (143), 15 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 11:57:53,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:53,773 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:53,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 11:57:53,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:57:53,974 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:53,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:53,974 INFO L85 PathProgramCache]: Analyzing trace with hash 71314657, now seen corresponding path program 36 times [2023-11-17 11:57:53,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:53,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940170727] [2023-11-17 11:57:53,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:53,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:53,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:54,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:54,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940170727] [2023-11-17 11:57:54,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940170727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:54,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:54,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:54,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080004994] [2023-11-17 11:57:54,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:54,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:54,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:54,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:54,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:54,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:54,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 420 transitions, 12039 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:54,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:54,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:54,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:57:57,057 INFO L124 PetriNetUnfolderBase]: 6805/10968 cut-off events. [2023-11-17 11:57:57,057 INFO L125 PetriNetUnfolderBase]: For 274969/274969 co-relation queries the response was YES. [2023-11-17 11:57:57,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77152 conditions, 10968 events. 6805/10968 cut-off events. For 274969/274969 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 73700 event pairs, 3006 based on Foata normal form. 6/10904 useless extension candidates. Maximal degree in co-relation 77014. Up to 8011 conditions per place. [2023-11-17 11:57:57,204 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 367 selfloop transitions, 129 changer transitions 9/505 dead transitions. [2023-11-17 11:57:57,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 505 transitions, 13870 flow [2023-11-17 11:57:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:57:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:57:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2023-11-17 11:57:57,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2023-11-17 11:57:57,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 138 transitions. [2023-11-17 11:57:57,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 138 transitions. [2023-11-17 11:57:57,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:57:57,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 138 transitions. [2023-11-17 11:57:57,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 11:57:57,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:57,206 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:57:57,206 INFO L175 Difference]: Start difference. First operand has 353 places, 420 transitions, 12039 flow. Second operand 7 states and 138 transitions. [2023-11-17 11:57:57,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 505 transitions, 13870 flow [2023-11-17 11:57:58,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 505 transitions, 13619 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-11-17 11:57:58,996 INFO L231 Difference]: Finished difference. Result has 360 places, 432 transitions, 12407 flow [2023-11-17 11:57:58,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=11788, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12407, PETRI_PLACES=360, PETRI_TRANSITIONS=432} [2023-11-17 11:57:58,997 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2023-11-17 11:57:58,997 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 432 transitions, 12407 flow [2023-11-17 11:57:58,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:58,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:57:58,997 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:57:58,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-11-17 11:57:58,997 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:57:58,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:57:58,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1367430315, now seen corresponding path program 37 times [2023-11-17 11:57:58,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:57:58,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030721006] [2023-11-17 11:57:58,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:57:58,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:57:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:57:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:57:59,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:57:59,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030721006] [2023-11-17 11:57:59,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030721006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:57:59,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:57:59,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:57:59,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269013108] [2023-11-17 11:57:59,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:57:59,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:57:59,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:57:59,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:57:59,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:57:59,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:57:59,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 432 transitions, 12407 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:57:59,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:57:59,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:57:59,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:02,007 INFO L124 PetriNetUnfolderBase]: 6791/10940 cut-off events. [2023-11-17 11:58:02,007 INFO L125 PetriNetUnfolderBase]: For 272322/272322 co-relation queries the response was YES. [2023-11-17 11:58:02,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77007 conditions, 10940 events. 6791/10940 cut-off events. For 272322/272322 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 73299 event pairs, 2982 based on Foata normal form. 6/10876 useless extension candidates. Maximal degree in co-relation 76865. Up to 8011 conditions per place. [2023-11-17 11:58:02,157 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 349 selfloop transitions, 140 changer transitions 8/497 dead transitions. [2023-11-17 11:58:02,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 497 transitions, 13876 flow [2023-11-17 11:58:02,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:58:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:58:02,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2023-11-17 11:58:02,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3492063492063492 [2023-11-17 11:58:02,158 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 132 transitions. [2023-11-17 11:58:02,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 132 transitions. [2023-11-17 11:58:02,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:02,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 132 transitions. [2023-11-17 11:58:02,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 11:58:02,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:02,160 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:02,160 INFO L175 Difference]: Start difference. First operand has 360 places, 432 transitions, 12407 flow. Second operand 7 states and 132 transitions. [2023-11-17 11:58:02,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 497 transitions, 13876 flow [2023-11-17 11:58:03,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 497 transitions, 13633 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-11-17 11:58:03,844 INFO L231 Difference]: Finished difference. Result has 363 places, 433 transitions, 12464 flow [2023-11-17 11:58:03,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=12132, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12464, PETRI_PLACES=363, PETRI_TRANSITIONS=433} [2023-11-17 11:58:03,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2023-11-17 11:58:03,845 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 433 transitions, 12464 flow [2023-11-17 11:58:03,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:03,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:03,845 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:58:03,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-11-17 11:58:03,845 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:58:03,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:03,845 INFO L85 PathProgramCache]: Analyzing trace with hash 802068205, now seen corresponding path program 34 times [2023-11-17 11:58:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:03,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334268263] [2023-11-17 11:58:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:03,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:04,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:58:04,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:04,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334268263] [2023-11-17 11:58:04,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334268263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:58:04,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:58:04,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:58:04,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249725617] [2023-11-17 11:58:04,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:58:04,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:58:04,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:04,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:58:04,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:58:04,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:58:04,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 433 transitions, 12464 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:58:04,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:04,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:58:04,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:07,423 INFO L124 PetriNetUnfolderBase]: 7568/12251 cut-off events. [2023-11-17 11:58:07,423 INFO L125 PetriNetUnfolderBase]: For 284528/284528 co-relation queries the response was YES. [2023-11-17 11:58:07,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84303 conditions, 12251 events. 7568/12251 cut-off events. For 284528/284528 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 85036 event pairs, 1298 based on Foata normal form. 10/12191 useless extension candidates. Maximal degree in co-relation 84161. Up to 5709 conditions per place. [2023-11-17 11:58:07,584 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 410 selfloop transitions, 119 changer transitions 2/531 dead transitions. [2023-11-17 11:58:07,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 531 transitions, 14861 flow [2023-11-17 11:58:07,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:58:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:58:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2023-11-17 11:58:07,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34656084656084657 [2023-11-17 11:58:07,585 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 131 transitions. [2023-11-17 11:58:07,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 131 transitions. [2023-11-17 11:58:07,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:07,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 131 transitions. [2023-11-17 11:58:07,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 11:58:07,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:07,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:07,586 INFO L175 Difference]: Start difference. First operand has 363 places, 433 transitions, 12464 flow. Second operand 7 states and 131 transitions. [2023-11-17 11:58:07,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 531 transitions, 14861 flow [2023-11-17 11:58:09,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 531 transitions, 14648 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-17 11:58:09,653 INFO L231 Difference]: Finished difference. Result has 369 places, 443 transitions, 12890 flow [2023-11-17 11:58:09,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=12253, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12890, PETRI_PLACES=369, PETRI_TRANSITIONS=443} [2023-11-17 11:58:09,653 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2023-11-17 11:58:09,654 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 443 transitions, 12890 flow [2023-11-17 11:58:09,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:58:09,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:09,654 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:58:09,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-11-17 11:58:09,654 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:58:09,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1506164173, now seen corresponding path program 38 times [2023-11-17 11:58:09,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:09,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156936698] [2023-11-17 11:58:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:09,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:58:09,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156936698] [2023-11-17 11:58:09,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156936698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:58:09,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:58:09,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-17 11:58:09,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860148011] [2023-11-17 11:58:09,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:58:09,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:58:09,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:58:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:58:09,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:58:09,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 443 transitions, 12890 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:58:09,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:09,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:58:09,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:13,047 INFO L124 PetriNetUnfolderBase]: 7584/12285 cut-off events. [2023-11-17 11:58:13,047 INFO L125 PetriNetUnfolderBase]: For 307235/307235 co-relation queries the response was YES. [2023-11-17 11:58:13,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86176 conditions, 12285 events. 7584/12285 cut-off events. For 307235/307235 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 84470 event pairs, 3650 based on Foata normal form. 4/12219 useless extension candidates. Maximal degree in co-relation 86031. Up to 9333 conditions per place. [2023-11-17 11:58:13,223 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 368 selfloop transitions, 145 changer transitions 0/513 dead transitions. [2023-11-17 11:58:13,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 513 transitions, 14500 flow [2023-11-17 11:58:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:58:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:58:13,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2023-11-17 11:58:13,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2023-11-17 11:58:13,224 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 141 transitions. [2023-11-17 11:58:13,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 141 transitions. [2023-11-17 11:58:13,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:13,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 141 transitions. [2023-11-17 11:58:13,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 11:58:13,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:13,225 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:13,225 INFO L175 Difference]: Start difference. First operand has 369 places, 443 transitions, 12890 flow. Second operand 7 states and 141 transitions. [2023-11-17 11:58:13,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 513 transitions, 14500 flow [2023-11-17 11:58:15,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 513 transitions, 14386 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-17 11:58:15,397 INFO L231 Difference]: Finished difference. Result has 375 places, 452 transitions, 13284 flow [2023-11-17 11:58:15,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=12777, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13284, PETRI_PLACES=375, PETRI_TRANSITIONS=452} [2023-11-17 11:58:15,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2023-11-17 11:58:15,398 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 452 transitions, 13284 flow [2023-11-17 11:58:15,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 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 11:58:15,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:15,398 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:58:15,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2023-11-17 11:58:15,398 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:58:15,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1802876861, now seen corresponding path program 39 times [2023-11-17 11:58:15,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:15,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377815125] [2023-11-17 11:58:15,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:15,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:58:15,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:15,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377815125] [2023-11-17 11:58:15,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377815125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:58:15,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:58:15,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:58:15,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737375089] [2023-11-17 11:58:15,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:58:15,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:58:15,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:15,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:58:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:58:15,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:58:15,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 452 transitions, 13284 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:15,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:15,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:58:15,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:19,000 INFO L124 PetriNetUnfolderBase]: 7600/12319 cut-off events. [2023-11-17 11:58:19,000 INFO L125 PetriNetUnfolderBase]: For 310712/310712 co-relation queries the response was YES. [2023-11-17 11:58:19,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86050 conditions, 12319 events. 7600/12319 cut-off events. For 310712/310712 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 84869 event pairs, 3622 based on Foata normal form. 4/12253 useless extension candidates. Maximal degree in co-relation 85903. Up to 9333 conditions per place. [2023-11-17 11:58:19,163 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 377 selfloop transitions, 142 changer transitions 0/519 dead transitions. [2023-11-17 11:58:19,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 519 transitions, 14798 flow [2023-11-17 11:58:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:58:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:58:19,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2023-11-17 11:58:19,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2023-11-17 11:58:19,164 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2023-11-17 11:58:19,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2023-11-17 11:58:19,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:19,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2023-11-17 11:58:19,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 11:58:19,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:19,165 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:19,165 INFO L175 Difference]: Start difference. First operand has 375 places, 452 transitions, 13284 flow. Second operand 7 states and 139 transitions. [2023-11-17 11:58:19,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 519 transitions, 14798 flow [2023-11-17 11:58:21,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 519 transitions, 14425 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-11-17 11:58:21,158 INFO L231 Difference]: Finished difference. Result has 379 places, 454 transitions, 13264 flow [2023-11-17 11:58:21,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=12916, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13264, PETRI_PLACES=379, PETRI_TRANSITIONS=454} [2023-11-17 11:58:21,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 349 predicate places. [2023-11-17 11:58:21,159 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 454 transitions, 13264 flow [2023-11-17 11:58:21,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:21,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:21,159 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:58:21,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2023-11-17 11:58:21,159 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:58:21,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:21,160 INFO L85 PathProgramCache]: Analyzing trace with hash -2008396521, now seen corresponding path program 35 times [2023-11-17 11:58:21,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:21,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052201178] [2023-11-17 11:58:21,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:21,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:58:21,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:21,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052201178] [2023-11-17 11:58:21,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052201178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:58:21,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:58:21,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:58:21,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138476137] [2023-11-17 11:58:21,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:58:21,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:58:21,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:58:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:58:21,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:58:21,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 454 transitions, 13264 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:21,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:21,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:58:21,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:24,746 INFO L124 PetriNetUnfolderBase]: 7776/12599 cut-off events. [2023-11-17 11:58:24,746 INFO L125 PetriNetUnfolderBase]: For 311262/311262 co-relation queries the response was YES. [2023-11-17 11:58:24,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88173 conditions, 12599 events. 7776/12599 cut-off events. For 311262/311262 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 87515 event pairs, 1898 based on Foata normal form. 4/12533 useless extension candidates. Maximal degree in co-relation 88025. Up to 5733 conditions per place. [2023-11-17 11:58:24,915 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 433 selfloop transitions, 122 changer transitions 2/557 dead transitions. [2023-11-17 11:58:24,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 557 transitions, 15716 flow [2023-11-17 11:58:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:58:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:58:24,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2023-11-17 11:58:24,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2023-11-17 11:58:24,916 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 138 transitions. [2023-11-17 11:58:24,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 138 transitions. [2023-11-17 11:58:24,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:24,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 138 transitions. [2023-11-17 11:58:24,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 11:58:24,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:24,917 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:24,917 INFO L175 Difference]: Start difference. First operand has 379 places, 454 transitions, 13264 flow. Second operand 7 states and 138 transitions. [2023-11-17 11:58:24,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 557 transitions, 15716 flow [2023-11-17 11:58:27,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 557 transitions, 15487 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 11:58:27,051 INFO L231 Difference]: Finished difference. Result has 384 places, 468 transitions, 13759 flow [2023-11-17 11:58:27,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=13035, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13759, PETRI_PLACES=384, PETRI_TRANSITIONS=468} [2023-11-17 11:58:27,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2023-11-17 11:58:27,052 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 468 transitions, 13759 flow [2023-11-17 11:58:27,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:27,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:27,052 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:58:27,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2023-11-17 11:58:27,052 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:58:27,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:27,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1412407543, now seen corresponding path program 40 times [2023-11-17 11:58:27,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575696945] [2023-11-17 11:58:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:27,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:58:27,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:27,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575696945] [2023-11-17 11:58:27,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575696945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:58:27,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:58:27,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:58:27,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511057783] [2023-11-17 11:58:27,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:58:27,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:58:27,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:27,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:58:27,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:58:27,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:58:27,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 468 transitions, 13759 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:27,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:27,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:58:27,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:30,880 INFO L124 PetriNetUnfolderBase]: 8118/13165 cut-off events. [2023-11-17 11:58:30,880 INFO L125 PetriNetUnfolderBase]: For 334527/334527 co-relation queries the response was YES. [2023-11-17 11:58:31,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92742 conditions, 13165 events. 8118/13165 cut-off events. For 334527/334527 co-relation queries the response was YES. Maximal size of possible extension queue 747. Compared 92251 event pairs, 2005 based on Foata normal form. 4/13091 useless extension candidates. Maximal degree in co-relation 92593. Up to 8210 conditions per place. [2023-11-17 11:58:31,065 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 426 selfloop transitions, 150 changer transitions 3/579 dead transitions. [2023-11-17 11:58:31,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 579 transitions, 16895 flow [2023-11-17 11:58:31,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:58:31,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:58:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2023-11-17 11:58:31,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2023-11-17 11:58:31,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 126 transitions. [2023-11-17 11:58:31,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 126 transitions. [2023-11-17 11:58:31,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:31,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 126 transitions. [2023-11-17 11:58:31,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 11:58:31,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:31,067 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:31,067 INFO L175 Difference]: Start difference. First operand has 384 places, 468 transitions, 13759 flow. Second operand 7 states and 126 transitions. [2023-11-17 11:58:31,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 579 transitions, 16895 flow [2023-11-17 11:58:33,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 579 transitions, 16658 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-11-17 11:58:33,474 INFO L231 Difference]: Finished difference. Result has 391 places, 485 transitions, 14545 flow [2023-11-17 11:58:33,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=13556, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14545, PETRI_PLACES=391, PETRI_TRANSITIONS=485} [2023-11-17 11:58:33,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2023-11-17 11:58:33,474 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 485 transitions, 14545 flow [2023-11-17 11:58:33,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:33,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:33,474 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:58:33,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-11-17 11:58:33,474 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:58:33,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:33,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1475348609, now seen corresponding path program 36 times [2023-11-17 11:58:33,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:33,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850827086] [2023-11-17 11:58:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:33,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:33,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:58:33,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:33,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850827086] [2023-11-17 11:58:33,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850827086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:58:33,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:58:33,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:58:33,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987288347] [2023-11-17 11:58:33,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:58:33,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:58:33,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:33,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:58:33,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:58:33,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:58:33,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 485 transitions, 14545 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:33,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:33,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:58:33,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:37,470 INFO L124 PetriNetUnfolderBase]: 8394/13591 cut-off events. [2023-11-17 11:58:37,470 INFO L125 PetriNetUnfolderBase]: For 370502/370502 co-relation queries the response was YES. [2023-11-17 11:58:37,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97132 conditions, 13591 events. 8394/13591 cut-off events. For 370502/370502 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 95452 event pairs, 2050 based on Foata normal form. 8/13513 useless extension candidates. Maximal degree in co-relation 96979. Up to 8328 conditions per place. [2023-11-17 11:58:37,658 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 399 selfloop transitions, 168 changer transitions 2/569 dead transitions. [2023-11-17 11:58:37,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 569 transitions, 16722 flow [2023-11-17 11:58:37,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:58:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:58:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2023-11-17 11:58:37,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3439153439153439 [2023-11-17 11:58:37,659 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 130 transitions. [2023-11-17 11:58:37,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 130 transitions. [2023-11-17 11:58:37,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:37,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 130 transitions. [2023-11-17 11:58:37,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 7 states have internal predecessors, (130), 0 states have call successors, (0), 0 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 11:58:37,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:37,660 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:37,660 INFO L175 Difference]: Start difference. First operand has 391 places, 485 transitions, 14545 flow. Second operand 7 states and 130 transitions. [2023-11-17 11:58:37,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 569 transitions, 16722 flow [2023-11-17 11:58:40,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 569 transitions, 16503 flow, removed 38 selfloop flow, removed 2 redundant places. [2023-11-17 11:58:40,029 INFO L231 Difference]: Finished difference. Result has 399 places, 492 transitions, 15047 flow [2023-11-17 11:58:40,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=14335, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15047, PETRI_PLACES=399, PETRI_TRANSITIONS=492} [2023-11-17 11:58:40,029 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2023-11-17 11:58:40,029 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 492 transitions, 15047 flow [2023-11-17 11:58:40,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:40,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:40,030 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:58:40,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-11-17 11:58:40,030 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:58:40,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash -266905237, now seen corresponding path program 37 times [2023-11-17 11:58:40,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:40,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576632300] [2023-11-17 11:58:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:40,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:58:40,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:40,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576632300] [2023-11-17 11:58:40,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576632300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:58:40,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:58:40,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:58:40,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122652604] [2023-11-17 11:58:40,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:58:40,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:58:40,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:40,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:58:40,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:58:40,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:58:40,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 492 transitions, 15047 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:40,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:40,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:58:40,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:44,113 INFO L124 PetriNetUnfolderBase]: 8448/13685 cut-off events. [2023-11-17 11:58:44,113 INFO L125 PetriNetUnfolderBase]: For 401589/401589 co-relation queries the response was YES. [2023-11-17 11:58:44,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100052 conditions, 13685 events. 8448/13685 cut-off events. For 401589/401589 co-relation queries the response was YES. Maximal size of possible extension queue 777. Compared 95809 event pairs, 2214 based on Foata normal form. 10/13609 useless extension candidates. Maximal degree in co-relation 99895. Up to 6235 conditions per place. [2023-11-17 11:58:44,305 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 430 selfloop transitions, 144 changer transitions 2/576 dead transitions. [2023-11-17 11:58:44,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 576 transitions, 17357 flow [2023-11-17 11:58:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:58:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:58:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2023-11-17 11:58:44,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3386243386243386 [2023-11-17 11:58:44,306 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 128 transitions. [2023-11-17 11:58:44,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 128 transitions. [2023-11-17 11:58:44,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:44,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 128 transitions. [2023-11-17 11:58:44,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 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 11:58:44,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:44,306 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:44,306 INFO L175 Difference]: Start difference. First operand has 399 places, 492 transitions, 15047 flow. Second operand 7 states and 128 transitions. [2023-11-17 11:58:44,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 576 transitions, 17357 flow [2023-11-17 11:58:46,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 576 transitions, 17137 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-17 11:58:46,809 INFO L231 Difference]: Finished difference. Result has 404 places, 502 transitions, 15518 flow [2023-11-17 11:58:46,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=14837, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15518, PETRI_PLACES=404, PETRI_TRANSITIONS=502} [2023-11-17 11:58:46,810 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 374 predicate places. [2023-11-17 11:58:46,810 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 502 transitions, 15518 flow [2023-11-17 11:58:46,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:46,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:46,810 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:58:46,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2023-11-17 11:58:46,810 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:58:46,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:46,811 INFO L85 PathProgramCache]: Analyzing trace with hash 468177329, now seen corresponding path program 38 times [2023-11-17 11:58:46,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:46,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22110806] [2023-11-17 11:58:46,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:46,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:46,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:58:46,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:46,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22110806] [2023-11-17 11:58:46,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22110806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:58:46,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:58:46,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:58:46,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7305375] [2023-11-17 11:58:46,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:58:46,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:58:46,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:58:46,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:58:46,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:58:46,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 502 transitions, 15518 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:46,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:46,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:58:46,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:51,161 INFO L124 PetriNetUnfolderBase]: 8349/13510 cut-off events. [2023-11-17 11:58:51,161 INFO L125 PetriNetUnfolderBase]: For 410579/410579 co-relation queries the response was YES. [2023-11-17 11:58:51,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100644 conditions, 13510 events. 8349/13510 cut-off events. For 410579/410579 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 94496 event pairs, 2191 based on Foata normal form. 60/13484 useless extension candidates. Maximal degree in co-relation 100485. Up to 6542 conditions per place. [2023-11-17 11:58:51,359 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 421 selfloop transitions, 151 changer transitions 1/573 dead transitions. [2023-11-17 11:58:51,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 573 transitions, 17275 flow [2023-11-17 11:58:51,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:58:51,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:58:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2023-11-17 11:58:51,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36243386243386244 [2023-11-17 11:58:51,360 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 137 transitions. [2023-11-17 11:58:51,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 137 transitions. [2023-11-17 11:58:51,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:51,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 137 transitions. [2023-11-17 11:58:51,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 11:58:51,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:51,361 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:51,361 INFO L175 Difference]: Start difference. First operand has 404 places, 502 transitions, 15518 flow. Second operand 7 states and 137 transitions. [2023-11-17 11:58:51,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 573 transitions, 17275 flow [2023-11-17 11:58:53,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 573 transitions, 17048 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-17 11:58:53,873 INFO L231 Difference]: Finished difference. Result has 406 places, 500 transitions, 15555 flow [2023-11-17 11:58:53,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=15253, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15555, PETRI_PLACES=406, PETRI_TRANSITIONS=500} [2023-11-17 11:58:53,873 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 376 predicate places. [2023-11-17 11:58:53,873 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 500 transitions, 15555 flow [2023-11-17 11:58:53,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:53,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:58:53,873 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:58:53,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-11-17 11:58:53,874 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:58:53,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:58:53,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1200740589, now seen corresponding path program 39 times [2023-11-17 11:58:53,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:58:53,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323503780] [2023-11-17 11:58:53,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:58:53,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:58:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:58:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:58:54,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:58:54,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323503780] [2023-11-17 11:58:54,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323503780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:58:54,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:58:54,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:58:54,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7557967] [2023-11-17 11:58:54,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:58:54,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:58:54,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:58:54,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:58:54,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:58:54,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:58:54,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 500 transitions, 15555 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:58:54,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:58:54,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:58:54,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:58:57,848 INFO L124 PetriNetUnfolderBase]: 8339/13488 cut-off events. [2023-11-17 11:58:57,849 INFO L125 PetriNetUnfolderBase]: For 408479/408479 co-relation queries the response was YES. [2023-11-17 11:58:57,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101033 conditions, 13488 events. 8339/13488 cut-off events. For 408479/408479 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 94029 event pairs, 2151 based on Foata normal form. 4/13406 useless extension candidates. Maximal degree in co-relation 100875. Up to 6235 conditions per place. [2023-11-17 11:58:58,044 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 423 selfloop transitions, 139 changer transitions 5/567 dead transitions. [2023-11-17 11:58:58,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 567 transitions, 17415 flow [2023-11-17 11:58:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:58:58,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:58:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2023-11-17 11:58:58,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3201058201058201 [2023-11-17 11:58:58,045 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 121 transitions. [2023-11-17 11:58:58,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 121 transitions. [2023-11-17 11:58:58,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:58:58,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 121 transitions. [2023-11-17 11:58:58,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 11:58:58,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:58,046 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:58:58,046 INFO L175 Difference]: Start difference. First operand has 406 places, 500 transitions, 15555 flow. Second operand 7 states and 121 transitions. [2023-11-17 11:58:58,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 567 transitions, 17415 flow [2023-11-17 11:59:00,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 567 transitions, 17175 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:59:00,609 INFO L231 Difference]: Finished difference. Result has 409 places, 498 transitions, 15538 flow [2023-11-17 11:59:00,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=15283, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15538, PETRI_PLACES=409, PETRI_TRANSITIONS=498} [2023-11-17 11:59:00,610 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2023-11-17 11:59:00,610 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 498 transitions, 15538 flow [2023-11-17 11:59:00,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:00,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:59:00,610 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:59:00,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2023-11-17 11:59:00,610 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:59:00,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:59:00,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1766076925, now seen corresponding path program 40 times [2023-11-17 11:59:00,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:59:00,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660235523] [2023-11-17 11:59:00,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:59:00,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:59:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:59:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:59:00,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:59:00,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660235523] [2023-11-17 11:59:00,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660235523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:59:00,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:59:00,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:59:00,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172421180] [2023-11-17 11:59:00,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:59:00,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:59:00,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:59:00,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:59:00,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:59:00,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:59:00,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 498 transitions, 15538 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:00,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:59:00,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:59:00,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:59:04,716 INFO L124 PetriNetUnfolderBase]: 8328/13473 cut-off events. [2023-11-17 11:59:04,717 INFO L125 PetriNetUnfolderBase]: For 407788/407788 co-relation queries the response was YES. [2023-11-17 11:59:04,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100909 conditions, 13473 events. 8328/13473 cut-off events. For 407788/407788 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 94447 event pairs, 2061 based on Foata normal form. 8/13395 useless extension candidates. Maximal degree in co-relation 100751. Up to 8336 conditions per place. [2023-11-17 11:59:04,901 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 406 selfloop transitions, 172 changer transitions 1/579 dead transitions. [2023-11-17 11:59:04,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 579 transitions, 17578 flow [2023-11-17 11:59:04,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:59:04,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:59:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2023-11-17 11:59:04,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36243386243386244 [2023-11-17 11:59:04,902 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 137 transitions. [2023-11-17 11:59:04,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 137 transitions. [2023-11-17 11:59:04,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:59:04,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 137 transitions. [2023-11-17 11:59:04,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.571428571428573) internal successors, (137), 7 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 11:59:04,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:04,903 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:04,903 INFO L175 Difference]: Start difference. First operand has 409 places, 498 transitions, 15538 flow. Second operand 7 states and 137 transitions. [2023-11-17 11:59:04,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 579 transitions, 17578 flow [2023-11-17 11:59:07,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 579 transitions, 17235 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-11-17 11:59:07,545 INFO L231 Difference]: Finished difference. Result has 409 places, 505 transitions, 15830 flow [2023-11-17 11:59:07,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=15211, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15830, PETRI_PLACES=409, PETRI_TRANSITIONS=505} [2023-11-17 11:59:07,546 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2023-11-17 11:59:07,546 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 505 transitions, 15830 flow [2023-11-17 11:59:07,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:07,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:59:07,546 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:59:07,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2023-11-17 11:59:07,546 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:59:07,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:59:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash 942299071, now seen corresponding path program 41 times [2023-11-17 11:59:07,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:59:07,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148002899] [2023-11-17 11:59:07,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:59:07,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:59:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:59:07,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:59:07,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:59:07,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148002899] [2023-11-17 11:59:07,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148002899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:59:07,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:59:07,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:59:07,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22067403] [2023-11-17 11:59:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:59:07,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:59:07,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:59:07,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:59:07,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:59:07,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:59:07,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 505 transitions, 15830 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:07,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:59:07,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:59:07,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:59:11,656 INFO L124 PetriNetUnfolderBase]: 8264/13361 cut-off events. [2023-11-17 11:59:11,657 INFO L125 PetriNetUnfolderBase]: For 414649/414649 co-relation queries the response was YES. [2023-11-17 11:59:11,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101142 conditions, 13361 events. 8264/13361 cut-off events. For 414649/414649 co-relation queries the response was YES. Maximal size of possible extension queue 757. Compared 93344 event pairs, 2061 based on Foata normal form. 40/13315 useless extension candidates. Maximal degree in co-relation 100981. Up to 8336 conditions per place. [2023-11-17 11:59:11,837 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 396 selfloop transitions, 173 changer transitions 1/570 dead transitions. [2023-11-17 11:59:11,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 570 transitions, 17593 flow [2023-11-17 11:59:11,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:59:11,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:59:11,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2023-11-17 11:59:11,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34656084656084657 [2023-11-17 11:59:11,838 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 131 transitions. [2023-11-17 11:59:11,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 131 transitions. [2023-11-17 11:59:11,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:59:11,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 131 transitions. [2023-11-17 11:59:11,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 11:59:11,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:11,839 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:11,839 INFO L175 Difference]: Start difference. First operand has 409 places, 505 transitions, 15830 flow. Second operand 7 states and 131 transitions. [2023-11-17 11:59:11,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 570 transitions, 17593 flow [2023-11-17 11:59:14,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 570 transitions, 17292 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-11-17 11:59:14,256 INFO L231 Difference]: Finished difference. Result has 414 places, 507 transitions, 15955 flow [2023-11-17 11:59:14,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=15529, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15955, PETRI_PLACES=414, PETRI_TRANSITIONS=507} [2023-11-17 11:59:14,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2023-11-17 11:59:14,257 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 507 transitions, 15955 flow [2023-11-17 11:59:14,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:14,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:59:14,257 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:59:14,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-11-17 11:59:14,257 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:59:14,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:59:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash 129363863, now seen corresponding path program 42 times [2023-11-17 11:59:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:59:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966345973] [2023-11-17 11:59:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:59:14,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:59:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:59:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:59:14,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:59:14,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966345973] [2023-11-17 11:59:14,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966345973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:59:14,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:59:14,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:59:14,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221127979] [2023-11-17 11:59:14,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:59:14,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:59:14,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:59:14,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:59:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:59:14,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:59:14,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 507 transitions, 15955 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:14,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:59:14,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:59:14,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:59:18,548 INFO L124 PetriNetUnfolderBase]: 8232/13305 cut-off events. [2023-11-17 11:59:18,549 INFO L125 PetriNetUnfolderBase]: For 419126/419126 co-relation queries the response was YES. [2023-11-17 11:59:18,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100866 conditions, 13305 events. 8232/13305 cut-off events. For 419126/419126 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 92742 event pairs, 2033 based on Foata normal form. 20/13239 useless extension candidates. Maximal degree in co-relation 100703. Up to 6235 conditions per place. [2023-11-17 11:59:18,736 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 448 selfloop transitions, 141 changer transitions 1/590 dead transitions. [2023-11-17 11:59:18,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 590 transitions, 18078 flow [2023-11-17 11:59:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:59:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:59:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2023-11-17 11:59:18,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35978835978835977 [2023-11-17 11:59:18,737 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 136 transitions. [2023-11-17 11:59:18,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 136 transitions. [2023-11-17 11:59:18,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:59:18,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 136 transitions. [2023-11-17 11:59:18,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 11:59:18,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:18,738 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:18,738 INFO L175 Difference]: Start difference. First operand has 414 places, 507 transitions, 15955 flow. Second operand 7 states and 136 transitions. [2023-11-17 11:59:18,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 590 transitions, 18078 flow [2023-11-17 11:59:21,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 590 transitions, 17724 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 11:59:21,141 INFO L231 Difference]: Finished difference. Result has 417 places, 508 transitions, 15963 flow [2023-11-17 11:59:21,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=15585, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15963, PETRI_PLACES=417, PETRI_TRANSITIONS=508} [2023-11-17 11:59:21,142 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 387 predicate places. [2023-11-17 11:59:21,142 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 508 transitions, 15963 flow [2023-11-17 11:59:21,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:21,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:59:21,142 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:59:21,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2023-11-17 11:59:21,142 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:59:21,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:59:21,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1358769211, now seen corresponding path program 41 times [2023-11-17 11:59:21,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:59:21,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480226361] [2023-11-17 11:59:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:59:21,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:59:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:59:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:59:21,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:59:21,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480226361] [2023-11-17 11:59:21,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480226361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:59:21,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:59:21,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:59:21,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344920388] [2023-11-17 11:59:21,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:59:21,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:59:21,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:59:21,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:59:21,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:59:21,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:59:21,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 508 transitions, 15963 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:21,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:59:21,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:59:21,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:59:25,274 INFO L124 PetriNetUnfolderBase]: 8216/13275 cut-off events. [2023-11-17 11:59:25,274 INFO L125 PetriNetUnfolderBase]: For 422367/422367 co-relation queries the response was YES. [2023-11-17 11:59:25,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100421 conditions, 13275 events. 8216/13275 cut-off events. For 422367/422367 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 92364 event pairs, 3719 based on Foata normal form. 6/13195 useless extension candidates. Maximal degree in co-relation 100257. Up to 9824 conditions per place. [2023-11-17 11:59:25,467 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 408 selfloop transitions, 152 changer transitions 6/566 dead transitions. [2023-11-17 11:59:25,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 566 transitions, 17469 flow [2023-11-17 11:59:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:59:25,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:59:25,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2023-11-17 11:59:25,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34656084656084657 [2023-11-17 11:59:25,467 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 131 transitions. [2023-11-17 11:59:25,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 131 transitions. [2023-11-17 11:59:25,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:59:25,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 131 transitions. [2023-11-17 11:59:25,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.714285714285715) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 11:59:25,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:25,468 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:25,468 INFO L175 Difference]: Start difference. First operand has 417 places, 508 transitions, 15963 flow. Second operand 7 states and 131 transitions. [2023-11-17 11:59:25,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 566 transitions, 17469 flow [2023-11-17 11:59:27,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 566 transitions, 17285 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 11:59:27,776 INFO L231 Difference]: Finished difference. Result has 421 places, 507 transitions, 16049 flow [2023-11-17 11:59:27,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=15740, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16049, PETRI_PLACES=421, PETRI_TRANSITIONS=507} [2023-11-17 11:59:27,776 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 391 predicate places. [2023-11-17 11:59:27,776 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 507 transitions, 16049 flow [2023-11-17 11:59:27,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:27,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:59:27,776 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:59:27,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2023-11-17 11:59:27,777 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:59:27,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:59:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1481079413, now seen corresponding path program 42 times [2023-11-17 11:59:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:59:27,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759341262] [2023-11-17 11:59:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:59:27,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:59:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:59:27,935 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:59:27,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:59:27,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759341262] [2023-11-17 11:59:27,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759341262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:59:27,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:59:27,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:59:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605894967] [2023-11-17 11:59:27,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:59:27,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:59:27,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:59:27,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:59:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:59:27,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:59:27,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 507 transitions, 16049 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:27,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:59:27,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:59:27,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:59:31,761 INFO L124 PetriNetUnfolderBase]: 8199/13238 cut-off events. [2023-11-17 11:59:31,761 INFO L125 PetriNetUnfolderBase]: For 427482/427482 co-relation queries the response was YES. [2023-11-17 11:59:31,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100730 conditions, 13238 events. 8199/13238 cut-off events. For 427482/427482 co-relation queries the response was YES. Maximal size of possible extension queue 748. Compared 92024 event pairs, 3609 based on Foata normal form. 6/13158 useless extension candidates. Maximal degree in co-relation 100565. Up to 9824 conditions per place. [2023-11-17 11:59:31,960 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 397 selfloop transitions, 152 changer transitions 6/555 dead transitions. [2023-11-17 11:59:31,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 555 transitions, 17382 flow [2023-11-17 11:59:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:59:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:59:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2023-11-17 11:59:31,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2023-11-17 11:59:31,960 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 126 transitions. [2023-11-17 11:59:31,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 126 transitions. [2023-11-17 11:59:31,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:59:31,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 126 transitions. [2023-11-17 11:59:31,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 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 11:59:31,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:31,961 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:31,961 INFO L175 Difference]: Start difference. First operand has 421 places, 507 transitions, 16049 flow. Second operand 7 states and 126 transitions. [2023-11-17 11:59:31,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 555 transitions, 17382 flow [2023-11-17 11:59:34,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 555 transitions, 17012 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 11:59:34,269 INFO L231 Difference]: Finished difference. Result has 420 places, 505 transitions, 15914 flow [2023-11-17 11:59:34,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=15641, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15914, PETRI_PLACES=420, PETRI_TRANSITIONS=505} [2023-11-17 11:59:34,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2023-11-17 11:59:34,270 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 505 transitions, 15914 flow [2023-11-17 11:59:34,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:34,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:59:34,270 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:59:34,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2023-11-17 11:59:34,271 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:59:34,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:59:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1099006461, now seen corresponding path program 43 times [2023-11-17 11:59:34,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:59:34,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772145942] [2023-11-17 11:59:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:59:34,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:59:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:59:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:59:34,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:59:34,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772145942] [2023-11-17 11:59:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772145942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:59:34,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:59:34,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:59:34,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413608474] [2023-11-17 11:59:34,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:59:34,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:59:34,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:59:34,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:59:34,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:59:34,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:59:34,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 505 transitions, 15914 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:34,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:59:34,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:59:34,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:59:38,519 INFO L124 PetriNetUnfolderBase]: 8634/14001 cut-off events. [2023-11-17 11:59:38,519 INFO L125 PetriNetUnfolderBase]: For 440970/440970 co-relation queries the response was YES. [2023-11-17 11:59:38,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105302 conditions, 14001 events. 8634/14001 cut-off events. For 440970/440970 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 98906 event pairs, 3859 based on Foata normal form. 4/13907 useless extension candidates. Maximal degree in co-relation 105137. Up to 9880 conditions per place. [2023-11-17 11:59:38,731 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 433 selfloop transitions, 154 changer transitions 0/587 dead transitions. [2023-11-17 11:59:38,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 587 transitions, 18341 flow [2023-11-17 11:59:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:59:38,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:59:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2023-11-17 11:59:38,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35185185185185186 [2023-11-17 11:59:38,733 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 133 transitions. [2023-11-17 11:59:38,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 133 transitions. [2023-11-17 11:59:38,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:59:38,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 133 transitions. [2023-11-17 11:59:38,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.0) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 11:59:38,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:38,734 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 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 11:59:38,734 INFO L175 Difference]: Start difference. First operand has 420 places, 505 transitions, 15914 flow. Second operand 7 states and 133 transitions. [2023-11-17 11:59:38,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 587 transitions, 18341 flow [2023-11-17 11:59:41,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 587 transitions, 18152 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 11:59:41,339 INFO L231 Difference]: Finished difference. Result has 424 places, 513 transitions, 16347 flow [2023-11-17 11:59:41,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=15745, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16347, PETRI_PLACES=424, PETRI_TRANSITIONS=513} [2023-11-17 11:59:41,340 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2023-11-17 11:59:41,340 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 513 transitions, 16347 flow [2023-11-17 11:59:41,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:41,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:59:41,340 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:59:41,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2023-11-17 11:59:41,340 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:59:41,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:59:41,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1435477667, now seen corresponding path program 44 times [2023-11-17 11:59:41,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:59:41,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388140837] [2023-11-17 11:59:41,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:59:41,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:59:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:59:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 11:59:41,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:59:41,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388140837] [2023-11-17 11:59:41,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388140837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:59:41,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:59:41,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:59:41,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195918872] [2023-11-17 11:59:41,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:59:41,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:59:41,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:59:41,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:59:41,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:59:41,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 54 [2023-11-17 11:59:41,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 513 transitions, 16347 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 11:59:41,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:59:41,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 54 [2023-11-17 11:59:41,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:59:45,833 INFO L124 PetriNetUnfolderBase]: 8712/14155 cut-off events. [2023-11-17 11:59:45,833 INFO L125 PetriNetUnfolderBase]: For 460864/460864 co-relation queries the response was YES.