/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/bench-exp2x6.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:45:14,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:45:14,330 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 11:45:14,360 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:45:14,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:45:14,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:45:14,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:45:14,362 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:45:14,363 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:45:14,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:45:14,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:45:14,367 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:45:14,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:45:14,368 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:45:14,369 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:45:14,369 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:45:14,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:45:14,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:45:14,369 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:45:14,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:45:14,370 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:45:14,370 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:45:14,371 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:45:14,371 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:45:14,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:45:14,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:45:14,372 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:45:14,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:45:14,373 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:45:14,373 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:45:14,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:45:14,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:45:14,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:45:14,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:45:14,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:45:14,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:45:14,635 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:45:14,635 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:45:14,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2023-11-17 11:45:15,905 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:45:16,138 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:45:16,139 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x6.wvr.c [2023-11-17 11:45:16,147 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c106c9935/e7c920c32e5f4342930f610c06d5e4de/FLAG892abcbbf [2023-11-17 11:45:16,166 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c106c9935/e7c920c32e5f4342930f610c06d5e4de [2023-11-17 11:45:16,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:45:16,169 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:45:16,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:45:16,170 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:45:16,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:45:16,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4f04ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16, skipping insertion in model container [2023-11-17 11:45:16,175 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:45:16,348 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/bench-exp2x6.wvr.c[2505,2518] [2023-11-17 11:45:16,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:45:16,367 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:45:16,388 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/bench-exp2x6.wvr.c[2505,2518] [2023-11-17 11:45:16,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:45:16,402 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:45:16,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16 WrapperNode [2023-11-17 11:45:16,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:45:16,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:45:16,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:45:16,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:45:16,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,419 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,438 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-11-17 11:45:16,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:45:16,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:45:16,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:45:16,439 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:45:16,455 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,458 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,466 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,470 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,471 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:45:16,476 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:45:16,476 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:45:16,476 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:45:16,477 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (1/1) ... [2023-11-17 11:45:16,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:45:16,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:45:16,510 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 11:45:16,522 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 11:45:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:45:16,544 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 11:45:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 11:45:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 11:45:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 11:45:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 11:45:16,546 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 11:45:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 11:45:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 11:45:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:45:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:45:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:45:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:45:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:45:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:45:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:45:16,549 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 11:45:16,679 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:45:16,682 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:45:16,981 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:45:17,235 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:45:17,236 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 11:45:17,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:45:17 BoogieIcfgContainer [2023-11-17 11:45:17,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:45:17,242 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:45:17,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:45:17,246 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:45:17,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:45:16" (1/3) ... [2023-11-17 11:45:17,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b332d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:45:17, skipping insertion in model container [2023-11-17 11:45:17,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:45:16" (2/3) ... [2023-11-17 11:45:17,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b332d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:45:17, skipping insertion in model container [2023-11-17 11:45:17,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:45:17" (3/3) ... [2023-11-17 11:45:17,249 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x6.wvr.c [2023-11-17 11:45:17,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:45:17,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:45:17,266 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:45:17,322 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 11:45:17,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 98 flow [2023-11-17 11:45:17,392 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2023-11-17 11:45:17,392 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 11:45:17,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 31 events. 4/31 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-11-17 11:45:17,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 35 transitions, 98 flow [2023-11-17 11:45:17,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 30 transitions, 84 flow [2023-11-17 11:45:17,407 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:45:17,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 30 transitions, 84 flow [2023-11-17 11:45:17,420 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 30 transitions, 84 flow [2023-11-17 11:45:17,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 30 transitions, 84 flow [2023-11-17 11:45:17,432 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2023-11-17 11:45:17,436 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 11:45:17,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2023-11-17 11:45:17,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 276 [2023-11-17 11:45:17,510 INFO L134 LiptonReduction]: Checked pairs total: 224 [2023-11-17 11:45:17,511 INFO L136 LiptonReduction]: Total number of compositions: 1 [2023-11-17 11:45:17,532 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:45:17,540 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;@3bd2923d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:45:17,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 11:45:17,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:45:17,558 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2023-11-17 11:45:17,558 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 11:45:17,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:17,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:17,559 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 2 more)] === [2023-11-17 11:45:17,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:17,565 INFO L85 PathProgramCache]: Analyzing trace with hash -377561494, now seen corresponding path program 1 times [2023-11-17 11:45:17,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:17,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399264272] [2023-11-17 11:45:17,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:17,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:18,080 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 11:45:18,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:18,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399264272] [2023-11-17 11:45:18,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399264272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:45:18,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:45:18,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:45:18,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234361430] [2023-11-17 11:45:18,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:45:18,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:45:18,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:45:18,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:45:18,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:45:18,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:45:18,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:18,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:45:18,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:45:18,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:45:18,488 INFO L124 PetriNetUnfolderBase]: 1537/1954 cut-off events. [2023-11-17 11:45:18,489 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-11-17 11:45:18,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 1954 events. 1537/1954 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6373 event pairs, 141 based on Foata normal form. 1/1134 useless extension candidates. Maximal degree in co-relation 3091. Up to 1733 conditions per place. [2023-11-17 11:45:18,515 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 41 selfloop transitions, 5 changer transitions 1/51 dead transitions. [2023-11-17 11:45:18,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 51 transitions, 241 flow [2023-11-17 11:45:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:45:18,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:45:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-17 11:45:18,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2023-11-17 11:45:18,531 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-17 11:45:18,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-17 11:45:18,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:45:18,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-17 11:45:18,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:18,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 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 11:45:18,543 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 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 11:45:18,545 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 75 transitions. [2023-11-17 11:45:18,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 51 transitions, 241 flow [2023-11-17 11:45:18,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 51 transitions, 211 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 11:45:18,558 INFO L231 Difference]: Finished difference. Result has 33 places, 33 transitions, 99 flow [2023-11-17 11:45:18,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=33, PETRI_TRANSITIONS=33} [2023-11-17 11:45:18,564 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-11-17 11:45:18,565 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 33 transitions, 99 flow [2023-11-17 11:45:18,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:18,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:18,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:18,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:45:18,567 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 2 more)] === [2023-11-17 11:45:18,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:18,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1750144003, now seen corresponding path program 1 times [2023-11-17 11:45:18,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:18,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973574908] [2023-11-17 11:45:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:18,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:45:18,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973574908] [2023-11-17 11:45:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973574908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:45:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:45:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:45:18,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825105876] [2023-11-17 11:45:18,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:45:18,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:45:18,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:45:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:45:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:45:18,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:45:18,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:18,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:45:18,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:45:18,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:45:19,112 INFO L124 PetriNetUnfolderBase]: 1843/2366 cut-off events. [2023-11-17 11:45:19,112 INFO L125 PetriNetUnfolderBase]: For 599/599 co-relation queries the response was YES. [2023-11-17 11:45:19,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5872 conditions, 2366 events. 1843/2366 cut-off events. For 599/599 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8391 event pairs, 99 based on Foata normal form. 34/2394 useless extension candidates. Maximal degree in co-relation 1448. Up to 967 conditions per place. [2023-11-17 11:45:19,129 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 72 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2023-11-17 11:45:19,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 86 transitions, 413 flow [2023-11-17 11:45:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:45:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:45:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2023-11-17 11:45:19,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2023-11-17 11:45:19,133 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 121 transitions. [2023-11-17 11:45:19,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 121 transitions. [2023-11-17 11:45:19,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:45:19,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 121 transitions. [2023-11-17 11:45:19,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.2) internal successors, (121), 5 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 11:45:19,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:19,136 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:19,136 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 99 flow. Second operand 5 states and 121 transitions. [2023-11-17 11:45:19,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 86 transitions, 413 flow [2023-11-17 11:45:19,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 86 transitions, 405 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:45:19,139 INFO L231 Difference]: Finished difference. Result has 38 places, 40 transitions, 159 flow [2023-11-17 11:45:19,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=38, PETRI_TRANSITIONS=40} [2023-11-17 11:45:19,140 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-11-17 11:45:19,140 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 40 transitions, 159 flow [2023-11-17 11:45:19,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:19,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:19,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:19,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:45:19,141 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 2 more)] === [2023-11-17 11:45:19,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:19,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1806499065, now seen corresponding path program 2 times [2023-11-17 11:45:19,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:19,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791558383] [2023-11-17 11:45:19,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:19,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:45:19,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791558383] [2023-11-17 11:45:19,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791558383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:45:19,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:45:19,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:45:19,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818969163] [2023-11-17 11:45:19,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:45:19,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:45:19,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:45:19,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:45:19,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:45:19,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:45:19,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 40 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:19,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:45:19,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:45:19,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:45:19,587 INFO L124 PetriNetUnfolderBase]: 1758/2291 cut-off events. [2023-11-17 11:45:19,587 INFO L125 PetriNetUnfolderBase]: For 1843/1843 co-relation queries the response was YES. [2023-11-17 11:45:19,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6887 conditions, 2291 events. 1758/2291 cut-off events. For 1843/1843 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8546 event pairs, 376 based on Foata normal form. 70/2343 useless extension candidates. Maximal degree in co-relation 1751. Up to 1213 conditions per place. [2023-11-17 11:45:19,604 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 72 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2023-11-17 11:45:19,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 86 transitions, 464 flow [2023-11-17 11:45:19,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:45:19,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:45:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2023-11-17 11:45:19,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6722222222222223 [2023-11-17 11:45:19,606 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 121 transitions. [2023-11-17 11:45:19,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 121 transitions. [2023-11-17 11:45:19,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:45:19,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 121 transitions. [2023-11-17 11:45:19,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.2) internal successors, (121), 5 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 11:45:19,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:19,608 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:19,609 INFO L175 Difference]: Start difference. First operand has 38 places, 40 transitions, 159 flow. Second operand 5 states and 121 transitions. [2023-11-17 11:45:19,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 86 transitions, 464 flow [2023-11-17 11:45:19,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 86 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:45:19,612 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 213 flow [2023-11-17 11:45:19,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-11-17 11:45:19,613 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-11-17 11:45:19,614 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 213 flow [2023-11-17 11:45:19,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:19,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:19,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:19,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:45:19,614 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 2 more)] === [2023-11-17 11:45:19,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:19,615 INFO L85 PathProgramCache]: Analyzing trace with hash -445544044, now seen corresponding path program 1 times [2023-11-17 11:45:19,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:19,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835041106] [2023-11-17 11:45:19,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:19,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:45:19,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:19,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835041106] [2023-11-17 11:45:19,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835041106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:45:19,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:45:19,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:45:19,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693814663] [2023-11-17 11:45:19,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:45:19,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:45:19,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:45:19,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:45:19,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:45:19,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:45:19,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 213 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:19,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:45:19,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:45:19,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:45:20,008 INFO L124 PetriNetUnfolderBase]: 1715/2238 cut-off events. [2023-11-17 11:45:20,008 INFO L125 PetriNetUnfolderBase]: For 3499/3499 co-relation queries the response was YES. [2023-11-17 11:45:20,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7407 conditions, 2238 events. 1715/2238 cut-off events. For 3499/3499 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8358 event pairs, 119 based on Foata normal form. 58/2290 useless extension candidates. Maximal degree in co-relation 3848. Up to 909 conditions per place. [2023-11-17 11:45:20,027 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 75 selfloop transitions, 8 changer transitions 0/87 dead transitions. [2023-11-17 11:45:20,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 87 transitions, 500 flow [2023-11-17 11:45:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:45:20,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:45:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2023-11-17 11:45:20,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-17 11:45:20,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 120 transitions. [2023-11-17 11:45:20,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 120 transitions. [2023-11-17 11:45:20,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:45:20,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 120 transitions. [2023-11-17 11:45:20,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:20,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:20,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:20,033 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 213 flow. Second operand 5 states and 120 transitions. [2023-11-17 11:45:20,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 87 transitions, 500 flow [2023-11-17 11:45:20,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 87 transitions, 491 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 11:45:20,047 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 218 flow [2023-11-17 11:45:20,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-17 11:45:20,050 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2023-11-17 11:45:20,050 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 218 flow [2023-11-17 11:45:20,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:20,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:20,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:20,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:45:20,051 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 2 more)] === [2023-11-17 11:45:20,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1094639851, now seen corresponding path program 1 times [2023-11-17 11:45:20,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:20,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244244964] [2023-11-17 11:45:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:45:20,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:20,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244244964] [2023-11-17 11:45:20,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244244964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:45:20,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:45:20,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:45:20,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662698286] [2023-11-17 11:45:20,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:45:20,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:45:20,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:45:20,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:45:20,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:45:20,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:45:20,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:20,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:45:20,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:45:20,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:45:20,468 INFO L124 PetriNetUnfolderBase]: 2045/2777 cut-off events. [2023-11-17 11:45:20,468 INFO L125 PetriNetUnfolderBase]: For 7094/7094 co-relation queries the response was YES. [2023-11-17 11:45:20,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9824 conditions, 2777 events. 2045/2777 cut-off events. For 7094/7094 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 11629 event pairs, 323 based on Foata normal form. 80/2835 useless extension candidates. Maximal degree in co-relation 5001. Up to 1205 conditions per place. [2023-11-17 11:45:20,491 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 102 selfloop transitions, 8 changer transitions 0/114 dead transitions. [2023-11-17 11:45:20,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 114 transitions, 853 flow [2023-11-17 11:45:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:45:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:45:20,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2023-11-17 11:45:20,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6611111111111111 [2023-11-17 11:45:20,493 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 119 transitions. [2023-11-17 11:45:20,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 119 transitions. [2023-11-17 11:45:20,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:45:20,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 119 transitions. [2023-11-17 11:45:20,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:20,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:20,494 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:20,495 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 218 flow. Second operand 5 states and 119 transitions. [2023-11-17 11:45:20,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 114 transitions, 853 flow [2023-11-17 11:45:20,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 114 transitions, 828 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 11:45:20,501 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 264 flow [2023-11-17 11:45:20,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-11-17 11:45:20,502 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2023-11-17 11:45:20,502 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 264 flow [2023-11-17 11:45:20,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:20,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:20,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:20,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:45:20,503 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 2 more)] === [2023-11-17 11:45:20,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:20,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1323824406, now seen corresponding path program 1 times [2023-11-17 11:45:20,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:20,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858566050] [2023-11-17 11:45:20,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:20,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:45:20,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:20,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858566050] [2023-11-17 11:45:20,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858566050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:45:20,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:45:20,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:45:20,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446769123] [2023-11-17 11:45:20,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:45:20,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:45:20,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:45:20,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:45:20,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:45:20,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:45:20,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:20,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:45:20,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:45:20,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:45:20,990 INFO L124 PetriNetUnfolderBase]: 2003/2723 cut-off events. [2023-11-17 11:45:20,990 INFO L125 PetriNetUnfolderBase]: For 7689/7689 co-relation queries the response was YES. [2023-11-17 11:45:20,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11278 conditions, 2723 events. 2003/2723 cut-off events. For 7689/7689 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 11036 event pairs, 75 based on Foata normal form. 42/2743 useless extension candidates. Maximal degree in co-relation 6967. Up to 1137 conditions per place. [2023-11-17 11:45:21,016 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 104 selfloop transitions, 10 changer transitions 0/118 dead transitions. [2023-11-17 11:45:21,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 118 transitions, 910 flow [2023-11-17 11:45:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:45:21,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:45:21,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2023-11-17 11:45:21,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2023-11-17 11:45:21,018 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 117 transitions. [2023-11-17 11:45:21,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 117 transitions. [2023-11-17 11:45:21,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:45:21,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 117 transitions. [2023-11-17 11:45:21,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 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 11:45:21,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:21,020 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:21,020 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 264 flow. Second operand 5 states and 117 transitions. [2023-11-17 11:45:21,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 118 transitions, 910 flow [2023-11-17 11:45:21,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 118 transitions, 910 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:45:21,033 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 327 flow [2023-11-17 11:45:21,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-11-17 11:45:21,035 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2023-11-17 11:45:21,035 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 327 flow [2023-11-17 11:45:21,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:21,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:21,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:21,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:45:21,036 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 2 more)] === [2023-11-17 11:45:21,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:21,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2124269350, now seen corresponding path program 2 times [2023-11-17 11:45:21,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:21,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250049322] [2023-11-17 11:45:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:21,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:45:21,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:21,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250049322] [2023-11-17 11:45:21,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250049322] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:45:21,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:45:21,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:45:21,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664780724] [2023-11-17 11:45:21,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:45:21,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:45:21,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:45:21,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:45:21,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:45:21,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:45:21,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 327 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:21,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:45:21,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:45:21,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:45:21,524 INFO L124 PetriNetUnfolderBase]: 1927/2659 cut-off events. [2023-11-17 11:45:21,524 INFO L125 PetriNetUnfolderBase]: For 8476/8476 co-relation queries the response was YES. [2023-11-17 11:45:21,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11777 conditions, 2659 events. 1927/2659 cut-off events. For 8476/8476 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11275 event pairs, 293 based on Foata normal form. 76/2713 useless extension candidates. Maximal degree in co-relation 7284. Up to 1593 conditions per place. [2023-11-17 11:45:21,551 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 101 selfloop transitions, 10 changer transitions 0/115 dead transitions. [2023-11-17 11:45:21,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 115 transitions, 937 flow [2023-11-17 11:45:21,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:45:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:45:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2023-11-17 11:45:21,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6277777777777778 [2023-11-17 11:45:21,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 113 transitions. [2023-11-17 11:45:21,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 113 transitions. [2023-11-17 11:45:21,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:45:21,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 113 transitions. [2023-11-17 11:45:21,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 22.6) internal successors, (113), 5 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 11:45:21,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:21,554 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:21,554 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 327 flow. Second operand 5 states and 113 transitions. [2023-11-17 11:45:21,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 115 transitions, 937 flow [2023-11-17 11:45:21,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 115 transitions, 922 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 11:45:21,568 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 366 flow [2023-11-17 11:45:21,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2023-11-17 11:45:21,569 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-11-17 11:45:21,570 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 366 flow [2023-11-17 11:45:21,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:21,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:21,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:21,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:45:21,572 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 2 more)] === [2023-11-17 11:45:21,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:21,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1375482185, now seen corresponding path program 2 times [2023-11-17 11:45:21,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:21,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635578533] [2023-11-17 11:45:21,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:21,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:45:21,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:21,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635578533] [2023-11-17 11:45:21,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635578533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:45:21,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:45:21,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:45:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440074919] [2023-11-17 11:45:21,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:45:21,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:45:21,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:45:21,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:45:21,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:45:21,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:45:21,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:21,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:45:21,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:45:21,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:45:21,960 INFO L124 PetriNetUnfolderBase]: 1725/2361 cut-off events. [2023-11-17 11:45:21,960 INFO L125 PetriNetUnfolderBase]: For 8217/8217 co-relation queries the response was YES. [2023-11-17 11:45:21,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11100 conditions, 2361 events. 1725/2361 cut-off events. For 8217/8217 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9337 event pairs, 83 based on Foata normal form. 38/2377 useless extension candidates. Maximal degree in co-relation 9547. Up to 987 conditions per place. [2023-11-17 11:45:21,981 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 101 selfloop transitions, 9 changer transitions 4/118 dead transitions. [2023-11-17 11:45:21,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 118 transitions, 964 flow [2023-11-17 11:45:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:45:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:45:21,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2023-11-17 11:45:21,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2023-11-17 11:45:21,983 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 116 transitions. [2023-11-17 11:45:21,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 116 transitions. [2023-11-17 11:45:21,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:45:21,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 116 transitions. [2023-11-17 11:45:21,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:21,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:21,985 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:21,985 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 366 flow. Second operand 5 states and 116 transitions. [2023-11-17 11:45:21,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 118 transitions, 964 flow [2023-11-17 11:45:22,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 118 transitions, 944 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 11:45:22,002 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 361 flow [2023-11-17 11:45:22,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2023-11-17 11:45:22,005 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2023-11-17 11:45:22,005 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 361 flow [2023-11-17 11:45:22,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:22,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:22,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:22,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:45:22,005 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 2 more)] === [2023-11-17 11:45:22,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:22,006 INFO L85 PathProgramCache]: Analyzing trace with hash 575263394, now seen corresponding path program 2 times [2023-11-17 11:45:22,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:22,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531481314] [2023-11-17 11:45:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:22,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:45:22,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:22,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531481314] [2023-11-17 11:45:22,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531481314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:45:22,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:45:22,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:45:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145452983] [2023-11-17 11:45:22,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:45:22,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:45:22,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:45:22,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:45:22,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:45:22,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:45:22,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 361 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:22,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:45:22,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:45:22,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:45:22,408 INFO L124 PetriNetUnfolderBase]: 1657/2288 cut-off events. [2023-11-17 11:45:22,408 INFO L125 PetriNetUnfolderBase]: For 8534/8534 co-relation queries the response was YES. [2023-11-17 11:45:22,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10948 conditions, 2288 events. 1657/2288 cut-off events. For 8534/8534 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 9651 event pairs, 481 based on Foata normal form. 68/2346 useless extension candidates. Maximal degree in co-relation 9335. Up to 1331 conditions per place. [2023-11-17 11:45:22,428 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 117 selfloop transitions, 8 changer transitions 0/129 dead transitions. [2023-11-17 11:45:22,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 129 transitions, 1099 flow [2023-11-17 11:45:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:45:22,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:45:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2023-11-17 11:45:22,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2023-11-17 11:45:22,430 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 117 transitions. [2023-11-17 11:45:22,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 117 transitions. [2023-11-17 11:45:22,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:45:22,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 117 transitions. [2023-11-17 11:45:22,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 23.4) internal successors, (117), 5 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 11:45:22,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:22,431 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 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 11:45:22,431 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 361 flow. Second operand 5 states and 117 transitions. [2023-11-17 11:45:22,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 129 transitions, 1099 flow [2023-11-17 11:45:22,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 129 transitions, 1066 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-17 11:45:22,449 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 407 flow [2023-11-17 11:45:22,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2023-11-17 11:45:22,450 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 34 predicate places. [2023-11-17 11:45:22,451 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 407 flow [2023-11-17 11:45:22,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:45:22,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:45:22,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:45:22,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:45:22,454 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 2 more)] === [2023-11-17 11:45:22,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:45:22,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2089912675, now seen corresponding path program 1 times [2023-11-17 11:45:22,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:45:22,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514958508] [2023-11-17 11:45:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:22,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:45:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:45:23,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:45:23,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514958508] [2023-11-17 11:45:23,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514958508] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:45:23,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140333979] [2023-11-17 11:45:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:45:23,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:45:23,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:45:23,013 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 11:45:23,045 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 11:45:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:45:23,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 11:45:23,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:46:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:46:17,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:46:27,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:46:27,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140333979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:46:27,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:46:27,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-11-17 11:46:27,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065108151] [2023-11-17 11:46:27,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:46:27,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 11:46:27,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:46:27,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 11:46:27,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=168, Unknown=12, NotChecked=0, Total=240 [2023-11-17 11:46:27,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:46:27,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 407 flow. Second operand has 16 states, 16 states have (on average 12.9375) internal successors, (207), 16 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:46:27,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:46:27,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:46:27,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:46:29,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:46:37,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:46:39,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:46:41,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:46:43,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:46:48,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:46:50,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:46:52,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:46:53,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:00,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:02,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:10,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:12,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:14,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:16,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:19,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:21,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:23,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:24,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:26,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:28,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:30,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:32,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:34,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:36,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:37,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:40,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:46,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:48,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:50,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:54,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:55,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:47:58,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:01,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:03,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:07,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:09,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:10,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:13,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:16,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:18,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:20,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:22,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:25,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:27,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:30,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:32,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:35,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:37,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:39,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:42,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:44,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:46,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:48,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:50,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:52,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-17 11:48:53,810 INFO L124 PetriNetUnfolderBase]: 3162/4421 cut-off events. [2023-11-17 11:48:53,811 INFO L125 PetriNetUnfolderBase]: For 15360/15360 co-relation queries the response was YES. [2023-11-17 11:48:53,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21363 conditions, 4421 events. 3162/4421 cut-off events. For 15360/15360 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 20764 event pairs, 339 based on Foata normal form. 34/4445 useless extension candidates. Maximal degree in co-relation 19366. Up to 2371 conditions per place. [2023-11-17 11:48:53,846 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 213 selfloop transitions, 97 changer transitions 41/355 dead transitions. [2023-11-17 11:48:53,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 355 transitions, 2894 flow [2023-11-17 11:48:53,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 11:48:53,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 11:48:53,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 423 transitions. [2023-11-17 11:48:53,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2023-11-17 11:48:53,849 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 423 transitions. [2023-11-17 11:48:53,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 423 transitions. [2023-11-17 11:48:53,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:48:53,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 423 transitions. [2023-11-17 11:48:53,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 23.5) internal successors, (423), 18 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:48:53,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 36.0) internal successors, (684), 19 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:48:53,852 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 36.0) internal successors, (684), 19 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:48:53,852 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 407 flow. Second operand 18 states and 423 transitions. [2023-11-17 11:48:53,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 355 transitions, 2894 flow [2023-11-17 11:48:53,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 355 transitions, 2821 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-11-17 11:48:53,880 INFO L231 Difference]: Finished difference. Result has 100 places, 151 transitions, 1619 flow [2023-11-17 11:48:53,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1619, PETRI_PLACES=100, PETRI_TRANSITIONS=151} [2023-11-17 11:48:53,880 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 62 predicate places. [2023-11-17 11:48:53,881 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 151 transitions, 1619 flow [2023-11-17 11:48:53,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.9375) internal successors, (207), 16 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:48:53,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:48:53,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:48:53,891 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 11:48:54,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-17 11:48:54,084 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 2 more)] === [2023-11-17 11:48:54,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:48:54,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1471430435, now seen corresponding path program 2 times [2023-11-17 11:48:54,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:48:54,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082014434] [2023-11-17 11:48:54,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:48:54,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:48:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:48:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:48:54,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:48:54,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082014434] [2023-11-17 11:48:54,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082014434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:48:54,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780968444] [2023-11-17 11:48:54,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:48:54,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:48:54,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:48:54,548 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 11:48:54,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process Received shutdown request... [2023-11-17 11:54:51,475 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 11:54:51,475 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 11:54:52,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-11-17 11:54:52,681 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forcibly destroying the process [2023-11-17 11:54:52,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 137 [2023-11-17 11:54:52,705 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 11:54:52,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:54:52,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2023-11-17 11:54:52,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264102696] [2023-11-17 11:54:52,705 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-17 11:54:52,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:54:52,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:54:52,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:54:52,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:54:52,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2023-11-17 11:54:52,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 151 transitions, 1619 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:54:52,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:54:52,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2023-11-17 11:54:52,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:54:52,708 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 11:54:52,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 11:54:52,708 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-11-17 11:54:52,709 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-17 11:54:52,709 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 11:54:52,709 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-17 11:54:52,709 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-17 11:54:52,710 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1] [2023-11-17 11:54:52,712 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:54:52,712 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:54:52,720 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:54:52 BasicIcfg [2023-11-17 11:54:52,720 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:54:52,720 INFO L158 Benchmark]: Toolchain (without parser) took 576551.53ms. Allocated memory was 188.7MB in the beginning and 349.2MB in the end (delta: 160.4MB). Free memory was 142.4MB in the beginning and 133.6MB in the end (delta: 8.8MB). Peak memory consumption was 170.5MB. Max. memory is 8.0GB. [2023-11-17 11:54:52,720 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 188.7MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:54:52,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.02ms. Allocated memory is still 188.7MB. Free memory was 142.4MB in the beginning and 130.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 11:54:52,721 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.87ms. Allocated memory is still 188.7MB. Free memory was 130.8MB in the beginning and 128.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:54:52,721 INFO L158 Benchmark]: Boogie Preprocessor took 36.42ms. Allocated memory is still 188.7MB. Free memory was 128.8MB in the beginning and 127.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:54:52,721 INFO L158 Benchmark]: RCFGBuilder took 761.98ms. Allocated memory was 188.7MB in the beginning and 289.4MB in the end (delta: 100.7MB). Free memory was 127.4MB in the beginning and 253.1MB in the end (delta: -125.7MB). Peak memory consumption was 35.8MB. Max. memory is 8.0GB. [2023-11-17 11:54:52,722 INFO L158 Benchmark]: TraceAbstraction took 575477.44ms. Allocated memory was 289.4MB in the beginning and 349.2MB in the end (delta: 59.8MB). Free memory was 252.1MB in the beginning and 133.6MB in the end (delta: 118.5MB). Peak memory consumption was 178.8MB. Max. memory is 8.0GB. [2023-11-17 11:54:52,727 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 188.7MB. Free memory is still 144.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 233.02ms. Allocated memory is still 188.7MB. Free memory was 142.4MB in the beginning and 130.8MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.87ms. Allocated memory is still 188.7MB. Free memory was 130.8MB in the beginning and 128.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.42ms. Allocated memory is still 188.7MB. Free memory was 128.8MB in the beginning and 127.4MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 761.98ms. Allocated memory was 188.7MB in the beginning and 289.4MB in the end (delta: 100.7MB). Free memory was 127.4MB in the beginning and 253.1MB in the end (delta: -125.7MB). Peak memory consumption was 35.8MB. Max. memory is 8.0GB. * TraceAbstraction took 575477.44ms. Allocated memory was 289.4MB in the beginning and 349.2MB in the end (delta: 59.8MB). Free memory was 252.1MB in the beginning and 133.6MB in the end (delta: 118.5MB). Peak memory consumption was 178.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.1s, 39 PlacesBefore, 38 PlacesAfterwards, 30 TransitionsBefore, 29 TransitionsAfterwards, 276 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 1 TotalNumberOfCompositions, 224 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 224, independent: 224, independent conditional: 0, independent unconditional: 224, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 112, independent: 112, independent conditional: 0, independent unconditional: 112, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 112, independent: 112, independent conditional: 0, independent unconditional: 112, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 224, independent: 112, independent conditional: 0, independent unconditional: 112, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 112, unknown conditional: 0, unknown unconditional: 112] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 112, Positive conditional cache size: 0, Positive unconditional cache size: 112, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 48 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 575.4s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 150.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 47 mSolverCounterUnknown, 438 SdHoareTripleChecker+Valid, 124.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 438 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 124.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1811 IncrementalHoareTripleChecker+Invalid, 1900 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 0 mSDtfsCounter, 1811 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 65.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1619occurred in iteration=10, InterpolantAutomatonStates: 61, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 65.9s InterpolantComputationTime, 314 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 328 ConstructedInterpolants, 0 QuantifiedInterpolants, 7523 SizeOfPredicates, 2 NumberOfNonLiveVariables, 215 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 13 InterpolantComputations, 9 PerfectInterpolantSequences, 8/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown