/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:14:12,300 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:14:12,365 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 15:14:12,402 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:14:12,402 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:14:12,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:14:12,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:14:12,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:14:12,404 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:14:12,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:14:12,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:14:12,409 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:14:12,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:14:12,410 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:14:12,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:14:12,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:14:12,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:14:12,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:14:12,411 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:14:12,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:14:12,412 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:14:12,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:14:12,412 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:14:12,413 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:14:12,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:14:12,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:14:12,414 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:14:12,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:14:12,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:14:12,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:14:12,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:14:12,416 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:14:12,416 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:14:12,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:14:12,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:14:12,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:14:12,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:14:12,645 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:14:12,645 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:14:12,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-12-09 15:14:13,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:14:13,956 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:14:13,957 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-12-09 15:14:13,964 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897d88bd9/3a6530487d3c41109da888fc2cba90e4/FLAG1ba455f7a [2023-12-09 15:14:13,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897d88bd9/3a6530487d3c41109da888fc2cba90e4 [2023-12-09 15:14:13,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:14:13,982 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:14:13,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:14:13,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:14:13,989 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:14:13,989 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:14:13" (1/1) ... [2023-12-09 15:14:13,990 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5cce8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:13, skipping insertion in model container [2023-12-09 15:14:13,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:14:13" (1/1) ... [2023-12-09 15:14:14,016 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:14:14,190 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/fibonacci.wvr.c[2356,2369] [2023-12-09 15:14:14,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:14:14,216 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:14:14,249 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/fibonacci.wvr.c[2356,2369] [2023-12-09 15:14:14,255 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:14:14,270 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:14:14,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14 WrapperNode [2023-12-09 15:14:14,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:14:14,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:14:14,272 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:14:14,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:14:14,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,332 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 172 [2023-12-09 15:14:14,332 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:14:14,333 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:14:14,333 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:14:14,333 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:14:14,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,364 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,366 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,367 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:14:14,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:14:14,370 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:14:14,370 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:14:14,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (1/1) ... [2023-12-09 15:14:14,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:14:14,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:14,405 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) [2023-12-09 15:14:14,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:14:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:14:14,438 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:14:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:14:14,438 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:14:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:14:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:14:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:14:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:14:14,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:14:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:14:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:14:14,425 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 [2023-12-09 15:14:14,441 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:14:14,519 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:14:14,521 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:14:14,832 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:14:14,846 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:14:14,847 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 15:14:14,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:14:14 BoogieIcfgContainer [2023-12-09 15:14:14,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:14:14,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:14:14,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:14:14,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:14:14,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:14:13" (1/3) ... [2023-12-09 15:14:14,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae2a1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:14:14, skipping insertion in model container [2023-12-09 15:14:14,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:14" (2/3) ... [2023-12-09 15:14:14,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ae2a1da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:14:14, skipping insertion in model container [2023-12-09 15:14:14,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:14:14" (3/3) ... [2023-12-09 15:14:14,854 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-12-09 15:14:14,865 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:14:14,865 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:14:14,865 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:14:14,983 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:14:15,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 227 transitions, 468 flow [2023-12-09 15:14:15,138 INFO L124 PetriNetUnfolderBase]: 14/225 cut-off events. [2023-12-09 15:14:15,138 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:14:15,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 225 events. 14/225 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 346 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2023-12-09 15:14:15,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 227 transitions, 468 flow [2023-12-09 15:14:15,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 216 transitions, 444 flow [2023-12-09 15:14:15,159 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:14:15,165 INFO L362 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=true, 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;@5444d989, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:14:15,166 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:14:15,220 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:14:15,221 INFO L124 PetriNetUnfolderBase]: 8/163 cut-off events. [2023-12-09 15:14:15,221 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:14:15,222 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:15,222 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:15,223 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:15,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:15,230 INFO L85 PathProgramCache]: Analyzing trace with hash 981322998, now seen corresponding path program 1 times [2023-12-09 15:14:15,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:15,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180290507] [2023-12-09 15:14:15,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:15,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:16,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:16,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180290507] [2023-12-09 15:14:16,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180290507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:16,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:16,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-09 15:14:16,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268793399] [2023-12-09 15:14:16,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:16,352 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:14:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:16,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:14:16,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-09 15:14:16,393 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 227 [2023-12-09 15:14:16,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 216 transitions, 444 flow. Second operand has 9 states, 9 states have (on average 182.88888888888889) internal successors, (1646), 9 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:16,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:16,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 227 [2023-12-09 15:14:16,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:16,806 INFO L124 PetriNetUnfolderBase]: 57/792 cut-off events. [2023-12-09 15:14:16,806 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-12-09 15:14:16,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 967 conditions, 792 events. 57/792 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4027 event pairs, 5 based on Foata normal form. 92/821 useless extension candidates. Maximal degree in co-relation 748. Up to 99 conditions per place. [2023-12-09 15:14:16,817 INFO L140 encePairwiseOnDemand]: 203/227 looper letters, 43 selfloop transitions, 7 changer transitions 10/230 dead transitions. [2023-12-09 15:14:16,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 230 transitions, 610 flow [2023-12-09 15:14:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-09 15:14:16,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-09 15:14:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2244 transitions. [2023-12-09 15:14:16,839 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8237885462555066 [2023-12-09 15:14:16,839 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2244 transitions. [2023-12-09 15:14:16,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2244 transitions. [2023-12-09 15:14:16,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:16,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2244 transitions. [2023-12-09 15:14:16,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 187.0) internal successors, (2244), 12 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:16,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 227.0) internal successors, (2951), 13 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:16,864 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 227.0) internal successors, (2951), 13 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:16,868 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 11 predicate places. [2023-12-09 15:14:16,868 INFO L500 AbstractCegarLoop]: Abstraction has has 220 places, 230 transitions, 610 flow [2023-12-09 15:14:16,869 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 182.88888888888889) internal successors, (1646), 9 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:16,869 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:16,869 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:16,870 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:14:16,870 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:16,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:16,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2137154394, now seen corresponding path program 2 times [2023-12-09 15:14:16,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:16,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773282282] [2023-12-09 15:14:16,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:16,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:17,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:17,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:17,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773282282] [2023-12-09 15:14:17,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773282282] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:17,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:17,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-09 15:14:17,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509733223] [2023-12-09 15:14:17,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:17,290 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:14:17,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:17,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:14:17,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-09 15:14:17,294 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 227 [2023-12-09 15:14:17,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 230 transitions, 610 flow. Second operand has 9 states, 9 states have (on average 182.88888888888889) internal successors, (1646), 9 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:17,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:17,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 227 [2023-12-09 15:14:17,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:17,603 INFO L124 PetriNetUnfolderBase]: 57/767 cut-off events. [2023-12-09 15:14:17,603 INFO L125 PetriNetUnfolderBase]: For 140/170 co-relation queries the response was YES. [2023-12-09 15:14:17,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 767 events. 57/767 cut-off events. For 140/170 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3875 event pairs, 4 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 815. Up to 99 conditions per place. [2023-12-09 15:14:17,608 INFO L140 encePairwiseOnDemand]: 215/227 looper letters, 37 selfloop transitions, 8 changer transitions 16/231 dead transitions. [2023-12-09 15:14:17,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 739 flow [2023-12-09 15:14:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-09 15:14:17,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-09 15:14:17,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2218 transitions. [2023-12-09 15:14:17,635 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8142437591776799 [2023-12-09 15:14:17,635 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2218 transitions. [2023-12-09 15:14:17,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2218 transitions. [2023-12-09 15:14:17,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:17,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2218 transitions. [2023-12-09 15:14:17,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 184.83333333333334) internal successors, (2218), 12 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:17,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 227.0) internal successors, (2951), 13 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:17,649 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 227.0) internal successors, (2951), 13 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:17,649 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 22 predicate places. [2023-12-09 15:14:17,650 INFO L500 AbstractCegarLoop]: Abstraction has has 231 places, 231 transitions, 739 flow [2023-12-09 15:14:17,650 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 182.88888888888889) internal successors, (1646), 9 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:17,650 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:17,651 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:17,651 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:14:17,651 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:17,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:17,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1587042304, now seen corresponding path program 1 times [2023-12-09 15:14:17,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:17,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122304587] [2023-12-09 15:14:17,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:17,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:17,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:17,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:17,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122304587] [2023-12-09 15:14:17,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122304587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:17,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:17,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:14:17,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464511463] [2023-12-09 15:14:17,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:17,804 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:14:17,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:17,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:14:17,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:14:17,808 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:17,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 231 transitions, 739 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:17,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:17,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:17,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:18,068 INFO L124 PetriNetUnfolderBase]: 191/1623 cut-off events. [2023-12-09 15:14:18,069 INFO L125 PetriNetUnfolderBase]: For 502/562 co-relation queries the response was YES. [2023-12-09 15:14:18,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2454 conditions, 1623 events. 191/1623 cut-off events. For 502/562 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10216 event pairs, 48 based on Foata normal form. 0/1467 useless extension candidates. Maximal degree in co-relation 2046. Up to 179 conditions per place. [2023-12-09 15:14:18,084 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 41 selfloop transitions, 6 changer transitions 25/266 dead transitions. [2023-12-09 15:14:18,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 266 transitions, 978 flow [2023-12-09 15:14:18,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:14:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:14:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1424 transitions. [2023-12-09 15:14:18,087 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8961611076148521 [2023-12-09 15:14:18,087 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1424 transitions. [2023-12-09 15:14:18,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1424 transitions. [2023-12-09 15:14:18,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:18,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1424 transitions. [2023-12-09 15:14:18,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 203.42857142857142) internal successors, (1424), 7 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:18,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:18,094 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:18,095 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 28 predicate places. [2023-12-09 15:14:18,095 INFO L500 AbstractCegarLoop]: Abstraction has has 237 places, 266 transitions, 978 flow [2023-12-09 15:14:18,096 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:18,096 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:18,096 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:18,096 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:14:18,096 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:18,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:18,098 INFO L85 PathProgramCache]: Analyzing trace with hash -823144466, now seen corresponding path program 2 times [2023-12-09 15:14:18,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231902819] [2023-12-09 15:14:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:18,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:18,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:18,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231902819] [2023-12-09 15:14:18,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231902819] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:18,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488720178] [2023-12-09 15:14:18,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:14:18,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:18,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:18,224 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) [2023-12-09 15:14:18,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:14:18,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:14:18,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:18,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:14:18,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:18,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:18,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488720178] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:18,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:18,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-12-09 15:14:18,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93443380] [2023-12-09 15:14:18,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:18,525 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:14:18,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:18,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:14:18,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-09 15:14:18,528 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:18,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 266 transitions, 978 flow. Second operand has 9 states, 9 states have (on average 198.66666666666666) internal successors, (1788), 9 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:18,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:18,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:18,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:19,174 INFO L124 PetriNetUnfolderBase]: 320/3928 cut-off events. [2023-12-09 15:14:19,175 INFO L125 PetriNetUnfolderBase]: For 1150/1330 co-relation queries the response was YES. [2023-12-09 15:14:19,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5827 conditions, 3928 events. 320/3928 cut-off events. For 1150/1330 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 31747 event pairs, 55 based on Foata normal form. 2/3597 useless extension candidates. Maximal degree in co-relation 5301. Up to 373 conditions per place. [2023-12-09 15:14:19,203 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 94 selfloop transitions, 61 changer transitions 31/380 dead transitions. [2023-12-09 15:14:19,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 380 transitions, 1866 flow [2023-12-09 15:14:19,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-09 15:14:19,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-12-09 15:14:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2830 transitions. [2023-12-09 15:14:19,210 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8904971680302077 [2023-12-09 15:14:19,210 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2830 transitions. [2023-12-09 15:14:19,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2830 transitions. [2023-12-09 15:14:19,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:19,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2830 transitions. [2023-12-09 15:14:19,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 202.14285714285714) internal successors, (2830), 14 states have internal predecessors, (2830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:19,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 227.0) internal successors, (3405), 15 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:19,224 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 227.0) internal successors, (3405), 15 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:19,226 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 41 predicate places. [2023-12-09 15:14:19,226 INFO L500 AbstractCegarLoop]: Abstraction has has 250 places, 380 transitions, 1866 flow [2023-12-09 15:14:19,227 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 198.66666666666666) internal successors, (1788), 9 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:19,227 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:19,227 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:19,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:14:19,433 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:19,434 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:19,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:19,434 INFO L85 PathProgramCache]: Analyzing trace with hash 945299720, now seen corresponding path program 1 times [2023-12-09 15:14:19,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:19,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973062197] [2023-12-09 15:14:19,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:19,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:19,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:19,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:19,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973062197] [2023-12-09 15:14:19,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973062197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:19,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:19,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:14:19,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003396362] [2023-12-09 15:14:19,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:19,595 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:14:19,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:19,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:14:19,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:14:19,597 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:19,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 380 transitions, 1866 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:19,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:19,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:19,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:20,147 INFO L124 PetriNetUnfolderBase]: 322/3811 cut-off events. [2023-12-09 15:14:20,147 INFO L125 PetriNetUnfolderBase]: For 1820/2187 co-relation queries the response was YES. [2023-12-09 15:14:20,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6190 conditions, 3811 events. 322/3811 cut-off events. For 1820/2187 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 30567 event pairs, 56 based on Foata normal form. 17/3505 useless extension candidates. Maximal degree in co-relation 5526. Up to 369 conditions per place. [2023-12-09 15:14:20,167 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 148 selfloop transitions, 21 changer transitions 50/413 dead transitions. [2023-12-09 15:14:20,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 413 transitions, 2506 flow [2023-12-09 15:14:20,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-09 15:14:20,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-12-09 15:14:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1426 transitions. [2023-12-09 15:14:20,171 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8974197608558842 [2023-12-09 15:14:20,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1426 transitions. [2023-12-09 15:14:20,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1426 transitions. [2023-12-09 15:14:20,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:20,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1426 transitions. [2023-12-09 15:14:20,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 203.71428571428572) internal successors, (1426), 7 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:20,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:20,178 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:20,178 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 47 predicate places. [2023-12-09 15:14:20,178 INFO L500 AbstractCegarLoop]: Abstraction has has 256 places, 413 transitions, 2506 flow [2023-12-09 15:14:20,179 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:20,179 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:20,179 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:20,179 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-09 15:14:20,180 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:20,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:20,180 INFO L85 PathProgramCache]: Analyzing trace with hash -2065485120, now seen corresponding path program 2 times [2023-12-09 15:14:20,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:20,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173034026] [2023-12-09 15:14:20,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:20,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173034026] [2023-12-09 15:14:20,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173034026] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198602120] [2023-12-09 15:14:20,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:14:20,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:20,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:20,289 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) [2023-12-09 15:14:20,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:14:20,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:14:20,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:20,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:14:20,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:20,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:20,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198602120] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:20,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:20,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-12-09 15:14:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839956215] [2023-12-09 15:14:20,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:20,558 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-09 15:14:20,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-09 15:14:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-09 15:14:20,562 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:20,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 413 transitions, 2506 flow. Second operand has 9 states, 9 states have (on average 198.44444444444446) internal successors, (1786), 9 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:20,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:20,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:20,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:21,242 INFO L124 PetriNetUnfolderBase]: 367/4360 cut-off events. [2023-12-09 15:14:21,242 INFO L125 PetriNetUnfolderBase]: For 2618/3223 co-relation queries the response was YES. [2023-12-09 15:14:21,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7591 conditions, 4360 events. 367/4360 cut-off events. For 2618/3223 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 37121 event pairs, 56 based on Foata normal form. 41/4043 useless extension candidates. Maximal degree in co-relation 6987. Up to 415 conditions per place. [2023-12-09 15:14:21,272 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 138 selfloop transitions, 103 changer transitions 52/487 dead transitions. [2023-12-09 15:14:21,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 487 transitions, 3695 flow [2023-12-09 15:14:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-09 15:14:21,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-12-09 15:14:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2827 transitions. [2023-12-09 15:14:21,278 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8895531780994336 [2023-12-09 15:14:21,279 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2827 transitions. [2023-12-09 15:14:21,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2827 transitions. [2023-12-09 15:14:21,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:21,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2827 transitions. [2023-12-09 15:14:21,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 201.92857142857142) internal successors, (2827), 14 states have internal predecessors, (2827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:21,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 227.0) internal successors, (3405), 15 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:21,292 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 227.0) internal successors, (3405), 15 states have internal predecessors, (3405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:21,294 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 60 predicate places. [2023-12-09 15:14:21,294 INFO L500 AbstractCegarLoop]: Abstraction has has 269 places, 487 transitions, 3695 flow [2023-12-09 15:14:21,295 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 198.44444444444446) internal successors, (1786), 9 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:21,295 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:21,295 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:21,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:14:21,501 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-09 15:14:21,501 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:21,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:21,501 INFO L85 PathProgramCache]: Analyzing trace with hash -39754456, now seen corresponding path program 3 times [2023-12-09 15:14:21,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:21,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776983788] [2023-12-09 15:14:21,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:21,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:21,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:21,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:21,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776983788] [2023-12-09 15:14:21,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776983788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:21,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:21,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:14:21,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509944959] [2023-12-09 15:14:21,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:21,606 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:14:21,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:21,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:14:21,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:14:21,608 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:21,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 487 transitions, 3695 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:21,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:21,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:21,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:22,268 INFO L124 PetriNetUnfolderBase]: 409/4759 cut-off events. [2023-12-09 15:14:22,268 INFO L125 PetriNetUnfolderBase]: For 3759/4536 co-relation queries the response was YES. [2023-12-09 15:14:22,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8862 conditions, 4759 events. 409/4759 cut-off events. For 3759/4536 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 41488 event pairs, 61 based on Foata normal form. 47/4414 useless extension candidates. Maximal degree in co-relation 7743. Up to 444 conditions per place. [2023-12-09 15:14:22,362 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 219 selfloop transitions, 46 changer transitions 59/518 dead transitions. [2023-12-09 15:14:22,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 518 transitions, 4629 flow [2023-12-09 15:14:22,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:14:22,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:14:22,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1235 transitions. [2023-12-09 15:14:22,365 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.906754772393539 [2023-12-09 15:14:22,365 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1235 transitions. [2023-12-09 15:14:22,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1235 transitions. [2023-12-09 15:14:22,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:22,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1235 transitions. [2023-12-09 15:14:22,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.83333333333334) internal successors, (1235), 6 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:22,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:22,371 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:22,372 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 65 predicate places. [2023-12-09 15:14:22,372 INFO L500 AbstractCegarLoop]: Abstraction has has 274 places, 518 transitions, 4629 flow [2023-12-09 15:14:22,372 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:22,372 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:22,372 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:22,373 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:14:22,373 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:22,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:22,373 INFO L85 PathProgramCache]: Analyzing trace with hash 690843862, now seen corresponding path program 4 times [2023-12-09 15:14:22,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:22,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303541824] [2023-12-09 15:14:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:22,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:22,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:22,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:22,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303541824] [2023-12-09 15:14:22,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303541824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:22,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:22,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:14:22,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898962688] [2023-12-09 15:14:22,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:22,463 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:14:22,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:22,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:14:22,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:14:22,466 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:22,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 518 transitions, 4629 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:22,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:22,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:22,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:23,047 INFO L124 PetriNetUnfolderBase]: 394/4642 cut-off events. [2023-12-09 15:14:23,047 INFO L125 PetriNetUnfolderBase]: For 5013/6104 co-relation queries the response was YES. [2023-12-09 15:14:23,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9197 conditions, 4642 events. 394/4642 cut-off events. For 5013/6104 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 40121 event pairs, 64 based on Foata normal form. 32/4292 useless extension candidates. Maximal degree in co-relation 7999. Up to 434 conditions per place. [2023-12-09 15:14:23,081 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 219 selfloop transitions, 36 changer transitions 59/508 dead transitions. [2023-12-09 15:14:23,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 508 transitions, 5113 flow [2023-12-09 15:14:23,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 15:14:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 15:14:23,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1026 transitions. [2023-12-09 15:14:23,085 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9039647577092511 [2023-12-09 15:14:23,085 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1026 transitions. [2023-12-09 15:14:23,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1026 transitions. [2023-12-09 15:14:23,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:23,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1026 transitions. [2023-12-09 15:14:23,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.2) internal successors, (1026), 5 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:23,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:23,090 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:23,092 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 69 predicate places. [2023-12-09 15:14:23,092 INFO L500 AbstractCegarLoop]: Abstraction has has 278 places, 508 transitions, 5113 flow [2023-12-09 15:14:23,093 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:23,093 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:23,093 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:23,093 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:14:23,093 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:23,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:23,094 INFO L85 PathProgramCache]: Analyzing trace with hash -91478450, now seen corresponding path program 5 times [2023-12-09 15:14:23,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:23,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869884911] [2023-12-09 15:14:23,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:23,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869884911] [2023-12-09 15:14:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869884911] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:23,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905774179] [2023-12-09 15:14:23,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:14:23,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:23,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:23,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:14:23,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:14:23,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:14:23,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:23,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:14:23,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:23,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:23,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905774179] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:23,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:23,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-12-09 15:14:23,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251654397] [2023-12-09 15:14:23,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:23,656 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:14:23,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:23,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:14:23,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:14:23,659 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:23,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 508 transitions, 5113 flow. Second operand has 11 states, 11 states have (on average 198.8181818181818) internal successors, (2187), 11 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:23,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:23,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:23,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:24,616 INFO L124 PetriNetUnfolderBase]: 487/5713 cut-off events. [2023-12-09 15:14:24,616 INFO L125 PetriNetUnfolderBase]: For 8227/9976 co-relation queries the response was YES. [2023-12-09 15:14:24,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11949 conditions, 5713 events. 487/5713 cut-off events. For 8227/9976 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 53588 event pairs, 83 based on Foata normal form. 80/5323 useless extension candidates. Maximal degree in co-relation 10402. Up to 537 conditions per place. [2023-12-09 15:14:24,652 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 199 selfloop transitions, 112 changer transitions 59/564 dead transitions. [2023-12-09 15:14:24,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 564 transitions, 6634 flow [2023-12-09 15:14:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-09 15:14:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-12-09 15:14:24,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2631 transitions. [2023-12-09 15:14:24,657 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.891562182311081 [2023-12-09 15:14:24,657 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2631 transitions. [2023-12-09 15:14:24,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2631 transitions. [2023-12-09 15:14:24,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:24,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2631 transitions. [2023-12-09 15:14:24,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 202.3846153846154) internal successors, (2631), 13 states have internal predecessors, (2631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:24,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 227.0) internal successors, (3178), 14 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:24,667 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 227.0) internal successors, (3178), 14 states have internal predecessors, (3178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:24,668 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 81 predicate places. [2023-12-09 15:14:24,668 INFO L500 AbstractCegarLoop]: Abstraction has has 290 places, 564 transitions, 6634 flow [2023-12-09 15:14:24,669 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.8181818181818) internal successors, (2187), 11 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:24,669 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:24,669 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:24,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:14:24,875 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:24,876 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:24,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:24,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1617253452, now seen corresponding path program 3 times [2023-12-09 15:14:24,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:24,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581263221] [2023-12-09 15:14:24,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:24,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:24,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:24,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581263221] [2023-12-09 15:14:24,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581263221] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:24,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:24,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:14:24,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871277650] [2023-12-09 15:14:24,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:24,965 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:14:24,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:24,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:14:24,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:14:24,966 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:24,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 564 transitions, 6634 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:24,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:24,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:24,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:25,735 INFO L124 PetriNetUnfolderBase]: 486/5697 cut-off events. [2023-12-09 15:14:25,735 INFO L125 PetriNetUnfolderBase]: For 10405/12001 co-relation queries the response was YES. [2023-12-09 15:14:25,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12680 conditions, 5697 events. 486/5697 cut-off events. For 10405/12001 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 53223 event pairs, 92 based on Foata normal form. 41/5269 useless extension candidates. Maximal degree in co-relation 11003. Up to 538 conditions per place. [2023-12-09 15:14:25,775 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 275 selfloop transitions, 34 changer transitions 67/570 dead transitions. [2023-12-09 15:14:25,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 570 transitions, 7479 flow [2023-12-09 15:14:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:14:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:14:25,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1223 transitions. [2023-12-09 15:14:25,783 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8979441997063142 [2023-12-09 15:14:25,784 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1223 transitions. [2023-12-09 15:14:25,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1223 transitions. [2023-12-09 15:14:25,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:25,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1223 transitions. [2023-12-09 15:14:25,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 203.83333333333334) internal successors, (1223), 6 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:25,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:25,789 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:25,790 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 86 predicate places. [2023-12-09 15:14:25,790 INFO L500 AbstractCegarLoop]: Abstraction has has 295 places, 570 transitions, 7479 flow [2023-12-09 15:14:25,790 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:25,790 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:25,790 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:25,790 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-09 15:14:25,790 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:25,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:25,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1109512756, now seen corresponding path program 4 times [2023-12-09 15:14:25,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:25,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716743419] [2023-12-09 15:14:25,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:25,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:25,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716743419] [2023-12-09 15:14:25,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716743419] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:25,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722413959] [2023-12-09 15:14:25,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:14:25,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:25,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:25,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:14:25,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:14:26,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:14:26,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:26,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:14:26,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:26,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:26,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722413959] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:26,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:26,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-12-09 15:14:26,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301502842] [2023-12-09 15:14:26,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:26,308 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:14:26,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:14:26,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:14:26,311 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:26,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 570 transitions, 7479 flow. Second operand has 11 states, 11 states have (on average 198.8181818181818) internal successors, (2187), 11 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:26,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:26,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:26,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:27,080 INFO L124 PetriNetUnfolderBase]: 494/6066 cut-off events. [2023-12-09 15:14:27,080 INFO L125 PetriNetUnfolderBase]: For 13121/15168 co-relation queries the response was YES. [2023-12-09 15:14:27,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13950 conditions, 6066 events. 494/6066 cut-off events. For 13121/15168 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 57853 event pairs, 86 based on Foata normal form. 84/5658 useless extension candidates. Maximal degree in co-relation 12171. Up to 550 conditions per place. [2023-12-09 15:14:27,116 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 241 selfloop transitions, 91 changer transitions 67/593 dead transitions. [2023-12-09 15:14:27,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 593 transitions, 8667 flow [2023-12-09 15:14:27,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:14:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:14:27,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1830 transitions. [2023-12-09 15:14:27,121 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.895741556534508 [2023-12-09 15:14:27,121 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1830 transitions. [2023-12-09 15:14:27,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1830 transitions. [2023-12-09 15:14:27,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:27,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1830 transitions. [2023-12-09 15:14:27,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 203.33333333333334) internal successors, (1830), 9 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:27,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:27,128 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:27,129 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 94 predicate places. [2023-12-09 15:14:27,129 INFO L500 AbstractCegarLoop]: Abstraction has has 303 places, 593 transitions, 8667 flow [2023-12-09 15:14:27,130 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.8181818181818) internal successors, (2187), 11 states have internal predecessors, (2187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:27,130 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:27,130 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:27,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 15:14:27,335 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:27,336 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:27,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash -236532478, now seen corresponding path program 6 times [2023-12-09 15:14:27,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:27,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115561837] [2023-12-09 15:14:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:27,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:27,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:27,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:27,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115561837] [2023-12-09 15:14:27,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115561837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:27,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:27,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:14:27,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248432022] [2023-12-09 15:14:27,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:27,443 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:14:27,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:14:27,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:14:27,446 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:27,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 593 transitions, 8667 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:27,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:27,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:27,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:28,214 INFO L124 PetriNetUnfolderBase]: 491/5965 cut-off events. [2023-12-09 15:14:28,214 INFO L125 PetriNetUnfolderBase]: For 15722/17621 co-relation queries the response was YES. [2023-12-09 15:14:28,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14450 conditions, 5965 events. 491/5965 cut-off events. For 15722/17621 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 56661 event pairs, 87 based on Foata normal form. 53/5535 useless extension candidates. Maximal degree in co-relation 12566. Up to 548 conditions per place. [2023-12-09 15:14:28,245 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 275 selfloop transitions, 49 changer transitions 67/585 dead transitions. [2023-12-09 15:14:28,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 585 transitions, 9265 flow [2023-12-09 15:14:28,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 15:14:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 15:14:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1028 transitions. [2023-12-09 15:14:28,248 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.905726872246696 [2023-12-09 15:14:28,248 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1028 transitions. [2023-12-09 15:14:28,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1028 transitions. [2023-12-09 15:14:28,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:28,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1028 transitions. [2023-12-09 15:14:28,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.6) internal successors, (1028), 5 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:28,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:28,251 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:28,252 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 98 predicate places. [2023-12-09 15:14:28,252 INFO L500 AbstractCegarLoop]: Abstraction has has 307 places, 585 transitions, 9265 flow [2023-12-09 15:14:28,252 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:28,252 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:28,253 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:28,253 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-09 15:14:28,253 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:28,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash 61509956, now seen corresponding path program 7 times [2023-12-09 15:14:28,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:28,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600116237] [2023-12-09 15:14:28,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:28,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:28,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600116237] [2023-12-09 15:14:28,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600116237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:28,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:28,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:14:28,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365819486] [2023-12-09 15:14:28,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:28,329 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:14:28,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:28,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:14:28,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:14:28,331 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:28,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 585 transitions, 9265 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:28,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:28,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:28,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:29,103 INFO L124 PetriNetUnfolderBase]: 482/5835 cut-off events. [2023-12-09 15:14:29,103 INFO L125 PetriNetUnfolderBase]: For 18479/20788 co-relation queries the response was YES. [2023-12-09 15:14:29,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14995 conditions, 5835 events. 482/5835 cut-off events. For 18479/20788 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 55238 event pairs, 93 based on Foata normal form. 46/5410 useless extension candidates. Maximal degree in co-relation 13010. Up to 544 conditions per place. [2023-12-09 15:14:29,138 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 271 selfloop transitions, 40 changer transitions 72/574 dead transitions. [2023-12-09 15:14:29,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 574 transitions, 9795 flow [2023-12-09 15:14:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:14:29,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:14:29,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1224 transitions. [2023-12-09 15:14:29,140 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8986784140969163 [2023-12-09 15:14:29,141 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1224 transitions. [2023-12-09 15:14:29,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1224 transitions. [2023-12-09 15:14:29,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:29,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1224 transitions. [2023-12-09 15:14:29,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:29,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:29,145 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:29,147 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 103 predicate places. [2023-12-09 15:14:29,147 INFO L500 AbstractCegarLoop]: Abstraction has has 312 places, 574 transitions, 9795 flow [2023-12-09 15:14:29,147 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:29,147 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:29,147 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:29,148 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-09 15:14:29,148 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:29,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:29,149 INFO L85 PathProgramCache]: Analyzing trace with hash -614772052, now seen corresponding path program 8 times [2023-12-09 15:14:29,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:29,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973918792] [2023-12-09 15:14:29,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:29,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:29,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:29,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:29,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973918792] [2023-12-09 15:14:29,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973918792] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:29,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023633604] [2023-12-09 15:14:29,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:14:29,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:29,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:29,254 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:14:29,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:14:29,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:14:29,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:29,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:14:29,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:29,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:29,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023633604] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:29,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:29,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-12-09 15:14:29,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840084144] [2023-12-09 15:14:29,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:29,579 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:14:29,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:14:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:14:29,581 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:29,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 574 transitions, 9795 flow. Second operand has 11 states, 11 states have (on average 198.72727272727272) internal successors, (2186), 11 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:29,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:29,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:29,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:30,398 INFO L124 PetriNetUnfolderBase]: 466/5751 cut-off events. [2023-12-09 15:14:30,398 INFO L125 PetriNetUnfolderBase]: For 20987/23686 co-relation queries the response was YES. [2023-12-09 15:14:30,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15252 conditions, 5751 events. 466/5751 cut-off events. For 20987/23686 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 54243 event pairs, 84 based on Foata normal form. 79/5373 useless extension candidates. Maximal degree in co-relation 13243. Up to 521 conditions per place. [2023-12-09 15:14:30,423 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 202 selfloop transitions, 90 changer transitions 72/555 dead transitions. [2023-12-09 15:14:30,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 555 transitions, 10020 flow [2023-12-09 15:14:30,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:14:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:14:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1830 transitions. [2023-12-09 15:14:30,431 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.895741556534508 [2023-12-09 15:14:30,431 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1830 transitions. [2023-12-09 15:14:30,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1830 transitions. [2023-12-09 15:14:30,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:30,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1830 transitions. [2023-12-09 15:14:30,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 203.33333333333334) internal successors, (1830), 9 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:30,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:30,437 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:30,438 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 111 predicate places. [2023-12-09 15:14:30,438 INFO L500 AbstractCegarLoop]: Abstraction has has 320 places, 555 transitions, 10020 flow [2023-12-09 15:14:30,438 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.72727272727272) internal successors, (2186), 11 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:30,438 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:30,439 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:30,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:14:30,643 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-09 15:14:30,644 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:30,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash 58367180, now seen corresponding path program 5 times [2023-12-09 15:14:30,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:30,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572903392] [2023-12-09 15:14:30,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:30,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:30,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:30,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572903392] [2023-12-09 15:14:30,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572903392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:30,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:30,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:14:30,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211820269] [2023-12-09 15:14:30,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:30,743 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:14:30,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:30,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:14:30,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:14:30,745 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:30,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 555 transitions, 10020 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:30,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:30,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:30,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:31,330 INFO L124 PetriNetUnfolderBase]: 454/5537 cut-off events. [2023-12-09 15:14:31,330 INFO L125 PetriNetUnfolderBase]: For 23167/25758 co-relation queries the response was YES. [2023-12-09 15:14:31,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15452 conditions, 5537 events. 454/5537 cut-off events. For 23167/25758 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 51603 event pairs, 92 based on Foata normal form. 38/5132 useless extension candidates. Maximal degree in co-relation 14161. Up to 510 conditions per place. [2023-12-09 15:14:31,383 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 250 selfloop transitions, 34 changer transitions 76/548 dead transitions. [2023-12-09 15:14:31,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 548 transitions, 10556 flow [2023-12-09 15:14:31,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:14:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:14:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1224 transitions. [2023-12-09 15:14:31,386 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8986784140969163 [2023-12-09 15:14:31,386 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1224 transitions. [2023-12-09 15:14:31,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1224 transitions. [2023-12-09 15:14:31,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:31,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1224 transitions. [2023-12-09 15:14:31,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:31,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:31,390 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 227.0) internal successors, (1589), 7 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:31,390 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 116 predicate places. [2023-12-09 15:14:31,390 INFO L500 AbstractCegarLoop]: Abstraction has has 325 places, 548 transitions, 10556 flow [2023-12-09 15:14:31,391 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:31,391 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:31,391 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:31,391 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-09 15:14:31,391 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:31,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:31,392 INFO L85 PathProgramCache]: Analyzing trace with hash -918196744, now seen corresponding path program 6 times [2023-12-09 15:14:31,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:31,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143666863] [2023-12-09 15:14:31,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:31,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:31,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:31,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143666863] [2023-12-09 15:14:31,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143666863] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:31,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452030688] [2023-12-09 15:14:31,613 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:14:31,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:31,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:31,614 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:14:31,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:14:31,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-09 15:14:31,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:31,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:14:31,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:31,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:31,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452030688] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:31,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:31,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-12-09 15:14:31,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665097957] [2023-12-09 15:14:31,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:31,956 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-09 15:14:31,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:31,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-09 15:14:31,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-12-09 15:14:31,960 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-12-09 15:14:31,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 548 transitions, 10556 flow. Second operand has 11 states, 11 states have (on average 198.72727272727272) internal successors, (2186), 11 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:31,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:31,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-12-09 15:14:31,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:32,842 INFO L124 PetriNetUnfolderBase]: 485/6208 cut-off events. [2023-12-09 15:14:32,843 INFO L125 PetriNetUnfolderBase]: For 27653/30825 co-relation queries the response was YES. [2023-12-09 15:14:32,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17347 conditions, 6208 events. 485/6208 cut-off events. For 27653/30825 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 60515 event pairs, 100 based on Foata normal form. 75/5795 useless extension candidates. Maximal degree in co-relation 15619. Up to 551 conditions per place. [2023-12-09 15:14:32,911 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 188 selfloop transitions, 107 changer transitions 76/559 dead transitions. [2023-12-09 15:14:32,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 559 transitions, 11557 flow [2023-12-09 15:14:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-09 15:14:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-09 15:14:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2430 transitions. [2023-12-09 15:14:32,914 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8920704845814978 [2023-12-09 15:14:32,914 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2430 transitions. [2023-12-09 15:14:32,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2430 transitions. [2023-12-09 15:14:32,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:32,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2430 transitions. [2023-12-09 15:14:32,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 202.5) internal successors, (2430), 12 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:32,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 227.0) internal successors, (2951), 13 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:32,923 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 227.0) internal successors, (2951), 13 states have internal predecessors, (2951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:32,923 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 126 predicate places. [2023-12-09 15:14:32,923 INFO L500 AbstractCegarLoop]: Abstraction has has 335 places, 559 transitions, 11557 flow [2023-12-09 15:14:32,924 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 198.72727272727272) internal successors, (2186), 11 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:32,924 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:32,924 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:32,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:14:33,129 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-09 15:14:33,130 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:33,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:33,130 INFO L85 PathProgramCache]: Analyzing trace with hash 266932898, now seen corresponding path program 1 times [2023-12-09 15:14:33,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:33,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833236495] [2023-12-09 15:14:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:33,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:33,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:33,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833236495] [2023-12-09 15:14:33,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833236495] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:33,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305315229] [2023-12-09 15:14:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:33,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:33,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:33,969 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:14:33,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:14:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:34,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-09 15:14:34,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:34,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:34,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:36,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:36,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305315229] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:36,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:36,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 45 [2023-12-09 15:14:36,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673333701] [2023-12-09 15:14:36,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:36,366 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-09 15:14:36,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-09 15:14:36,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1844, Unknown=0, NotChecked=0, Total=1980 [2023-12-09 15:14:36,373 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-12-09 15:14:36,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 559 transitions, 11557 flow. Second operand has 45 states, 45 states have (on average 152.9111111111111) internal successors, (6881), 45 states have internal predecessors, (6881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:36,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:36,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-12-09 15:14:36,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:43,045 INFO L124 PetriNetUnfolderBase]: 5414/26897 cut-off events. [2023-12-09 15:14:43,045 INFO L125 PetriNetUnfolderBase]: For 104779/108620 co-relation queries the response was YES. [2023-12-09 15:14:43,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72629 conditions, 26897 events. 5414/26897 cut-off events. For 104779/108620 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 318445 event pairs, 1038 based on Foata normal form. 29/25002 useless extension candidates. Maximal degree in co-relation 67067. Up to 6623 conditions per place. [2023-12-09 15:14:43,206 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 340 selfloop transitions, 106 changer transitions 87/933 dead transitions. [2023-12-09 15:14:43,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 933 transitions, 14481 flow [2023-12-09 15:14:43,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-12-09 15:14:43,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-12-09 15:14:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 10193 transitions. [2023-12-09 15:14:43,215 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6908166723144696 [2023-12-09 15:14:43,215 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 10193 transitions. [2023-12-09 15:14:43,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 10193 transitions. [2023-12-09 15:14:43,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:43,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 10193 transitions. [2023-12-09 15:14:43,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 156.8153846153846) internal successors, (10193), 65 states have internal predecessors, (10193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:43,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 227.0) internal successors, (14982), 66 states have internal predecessors, (14982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:43,249 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 227.0) internal successors, (14982), 66 states have internal predecessors, (14982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:43,249 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 190 predicate places. [2023-12-09 15:14:43,249 INFO L500 AbstractCegarLoop]: Abstraction has has 399 places, 933 transitions, 14481 flow [2023-12-09 15:14:43,251 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 152.9111111111111) internal successors, (6881), 45 states have internal predecessors, (6881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:43,251 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:43,251 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:43,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-09 15:14:43,456 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:43,456 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:43,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:43,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1596949294, now seen corresponding path program 2 times [2023-12-09 15:14:43,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:43,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388640818] [2023-12-09 15:14:43,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:43,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:44,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388640818] [2023-12-09 15:14:44,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388640818] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586343021] [2023-12-09 15:14:44,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:14:44,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:44,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:44,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:14:44,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:14:44,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:14:44,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:44,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-09 15:14:44,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:45,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:46,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:46,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586343021] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:46,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:46,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 45 [2023-12-09 15:14:46,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412452049] [2023-12-09 15:14:46,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:46,388 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-09 15:14:46,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:46,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-09 15:14:46,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1844, Unknown=0, NotChecked=0, Total=1980 [2023-12-09 15:14:46,395 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-12-09 15:14:46,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 933 transitions, 14481 flow. Second operand has 45 states, 45 states have (on average 152.9111111111111) internal successors, (6881), 45 states have internal predecessors, (6881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:46,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:46,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-12-09 15:14:46,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:54,303 INFO L124 PetriNetUnfolderBase]: 6739/32970 cut-off events. [2023-12-09 15:14:54,303 INFO L125 PetriNetUnfolderBase]: For 146401/154196 co-relation queries the response was YES. [2023-12-09 15:14:54,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105868 conditions, 32970 events. 6739/32970 cut-off events. For 146401/154196 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 406919 event pairs, 1030 based on Foata normal form. 95/30754 useless extension candidates. Maximal degree in co-relation 97418. Up to 8812 conditions per place. [2023-12-09 15:14:54,554 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 605 selfloop transitions, 194 changer transitions 97/1296 dead transitions. [2023-12-09 15:14:54,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1296 transitions, 19041 flow [2023-12-09 15:14:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-09 15:14:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-12-09 15:14:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 9891 transitions. [2023-12-09 15:14:54,563 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6916299559471366 [2023-12-09 15:14:54,564 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 9891 transitions. [2023-12-09 15:14:54,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 9891 transitions. [2023-12-09 15:14:54,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:54,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 9891 transitions. [2023-12-09 15:14:54,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 157.0) internal successors, (9891), 63 states have internal predecessors, (9891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:54,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 227.0) internal successors, (14528), 64 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:54,593 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 227.0) internal successors, (14528), 64 states have internal predecessors, (14528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:54,594 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 252 predicate places. [2023-12-09 15:14:54,594 INFO L500 AbstractCegarLoop]: Abstraction has has 461 places, 1296 transitions, 19041 flow [2023-12-09 15:14:54,595 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 152.9111111111111) internal successors, (6881), 45 states have internal predecessors, (6881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:54,595 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:54,595 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:14:54,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:14:54,800 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-09 15:14:54,801 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:54,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:54,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1500801852, now seen corresponding path program 3 times [2023-12-09 15:14:54,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:54,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274758407] [2023-12-09 15:14:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:55,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:55,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274758407] [2023-12-09 15:14:55,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274758407] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:55,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906989052] [2023-12-09 15:14:55,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:14:55,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:55,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:55,631 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:14:55,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:14:55,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:14:55,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:55,745 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-09 15:14:55,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:56,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:56,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:57,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:57,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906989052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:57,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:57,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 48 [2023-12-09 15:14:57,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255140390] [2023-12-09 15:14:57,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:57,740 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-09 15:14:57,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:57,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-09 15:14:57,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2110, Unknown=0, NotChecked=0, Total=2256 [2023-12-09 15:14:57,745 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-12-09 15:14:57,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 1296 transitions, 19041 flow. Second operand has 48 states, 48 states have (on average 152.8125) internal successors, (7335), 48 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:14:57,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:57,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-12-09 15:14:57,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:15:06,838 INFO L124 PetriNetUnfolderBase]: 8039/38970 cut-off events. [2023-12-09 15:15:06,839 INFO L125 PetriNetUnfolderBase]: For 190285/202935 co-relation queries the response was YES. [2023-12-09 15:15:07,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140358 conditions, 38970 events. 8039/38970 cut-off events. For 190285/202935 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 497777 event pairs, 1058 based on Foata normal form. 207/36451 useless extension candidates. Maximal degree in co-relation 138004. Up to 11741 conditions per place. [2023-12-09 15:15:07,183 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 904 selfloop transitions, 185 changer transitions 106/1595 dead transitions. [2023-12-09 15:15:07,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 1595 transitions, 24865 flow [2023-12-09 15:15:07,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-09 15:15:07,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-12-09 15:15:07,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 6961 transitions. [2023-12-09 15:15:07,189 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6969363235883059 [2023-12-09 15:15:07,189 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 6961 transitions. [2023-12-09 15:15:07,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 6961 transitions. [2023-12-09 15:15:07,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:15:07,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 6961 transitions. [2023-12-09 15:15:07,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 158.20454545454547) internal successors, (6961), 44 states have internal predecessors, (6961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:07,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 227.0) internal successors, (10215), 45 states have internal predecessors, (10215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:07,207 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 227.0) internal successors, (10215), 45 states have internal predecessors, (10215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:07,207 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 295 predicate places. [2023-12-09 15:15:07,208 INFO L500 AbstractCegarLoop]: Abstraction has has 504 places, 1595 transitions, 24865 flow [2023-12-09 15:15:07,209 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 152.8125) internal successors, (7335), 48 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:07,209 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:15:07,209 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:15:07,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:15:07,414 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:15:07,414 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:15:07,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:15:07,415 INFO L85 PathProgramCache]: Analyzing trace with hash -604343142, now seen corresponding path program 4 times [2023-12-09 15:15:07,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:15:07,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63170270] [2023-12-09 15:15:07,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:15:07,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:15:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:15:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:08,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:15:08,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63170270] [2023-12-09 15:15:08,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63170270] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:15:08,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265447117] [2023-12-09 15:15:08,322 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:15:08,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:15:08,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:15:08,323 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:15:08,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:15:08,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:15:08,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:15:08,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-09 15:15:08,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:15:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:09,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:15:10,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:10,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265447117] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:15:10,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:15:10,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 46 [2023-12-09 15:15:10,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044257206] [2023-12-09 15:15:10,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:15:10,189 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-09 15:15:10,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:15:10,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-09 15:15:10,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2023-12-09 15:15:10,193 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-12-09 15:15:10,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 1595 transitions, 24865 flow. Second operand has 46 states, 46 states have (on average 152.82608695652175) internal successors, (7030), 46 states have internal predecessors, (7030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:10,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:15:10,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-12-09 15:15:10,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:15:19,786 INFO L124 PetriNetUnfolderBase]: 8568/41338 cut-off events. [2023-12-09 15:15:19,786 INFO L125 PetriNetUnfolderBase]: For 223425/240024 co-relation queries the response was YES. [2023-12-09 15:15:20,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166359 conditions, 41338 events. 8568/41338 cut-off events. For 223425/240024 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 532823 event pairs, 1084 based on Foata normal form. 236/38696 useless extension candidates. Maximal degree in co-relation 163503. Up to 13321 conditions per place. [2023-12-09 15:15:20,343 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 1024 selfloop transitions, 224 changer transitions 114/1762 dead transitions. [2023-12-09 15:15:20,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1762 transitions, 29701 flow [2023-12-09 15:15:20,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-12-09 15:15:20,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-12-09 15:15:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 7984 transitions. [2023-12-09 15:15:20,351 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.689643258184331 [2023-12-09 15:15:20,351 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 7984 transitions. [2023-12-09 15:15:20,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 7984 transitions. [2023-12-09 15:15:20,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:15:20,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 7984 transitions. [2023-12-09 15:15:20,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 156.54901960784315) internal successors, (7984), 51 states have internal predecessors, (7984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:20,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 227.0) internal successors, (11804), 52 states have internal predecessors, (11804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:20,376 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 227.0) internal successors, (11804), 52 states have internal predecessors, (11804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:20,376 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 345 predicate places. [2023-12-09 15:15:20,376 INFO L500 AbstractCegarLoop]: Abstraction has has 554 places, 1762 transitions, 29701 flow [2023-12-09 15:15:20,377 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 152.82608695652175) internal successors, (7030), 46 states have internal predecessors, (7030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:20,377 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:15:20,378 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:15:20,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-09 15:15:20,587 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:15:20,587 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:15:20,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:15:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash 434021778, now seen corresponding path program 5 times [2023-12-09 15:15:20,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:15:20,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523383311] [2023-12-09 15:15:20,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:15:20,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:15:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:15:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:21,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:15:21,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523383311] [2023-12-09 15:15:21,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523383311] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:15:21,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817979422] [2023-12-09 15:15:21,385 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:15:21,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:15:21,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:15:21,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:15:21,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:15:21,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:15:21,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:15:21,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 48 conjunts are in the unsatisfiable core [2023-12-09 15:15:21,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:15:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:22,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:15:24,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:24,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817979422] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:15:24,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:15:24,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 25] total 57 [2023-12-09 15:15:24,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25936424] [2023-12-09 15:15:24,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:15:24,321 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-09 15:15:24,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:15:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-09 15:15:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=3002, Unknown=0, NotChecked=0, Total=3192 [2023-12-09 15:15:24,326 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 227 [2023-12-09 15:15:24,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 1762 transitions, 29701 flow. Second operand has 57 states, 57 states have (on average 127.3859649122807) internal successors, (7261), 57 states have internal predecessors, (7261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:24,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:15:24,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 227 [2023-12-09 15:15:24,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:15:48,746 INFO L124 PetriNetUnfolderBase]: 21909/76591 cut-off events. [2023-12-09 15:15:48,746 INFO L125 PetriNetUnfolderBase]: For 615161/643347 co-relation queries the response was YES. [2023-12-09 15:15:49,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352672 conditions, 76591 events. 21909/76591 cut-off events. For 615161/643347 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 1004897 event pairs, 4670 based on Foata normal form. 450/71539 useless extension candidates. Maximal degree in co-relation 317165. Up to 30620 conditions per place. [2023-12-09 15:15:49,583 INFO L140 encePairwiseOnDemand]: 183/227 looper letters, 1498 selfloop transitions, 431 changer transitions 294/2597 dead transitions. [2023-12-09 15:15:49,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 2597 transitions, 45792 flow [2023-12-09 15:15:49,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-12-09 15:15:49,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2023-12-09 15:15:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 14533 transitions. [2023-12-09 15:15:49,596 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5767750128983609 [2023-12-09 15:15:49,596 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 14533 transitions. [2023-12-09 15:15:49,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 14533 transitions. [2023-12-09 15:15:49,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:15:49,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 14533 transitions. [2023-12-09 15:15:49,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 112 states, 111 states have (on average 130.92792792792793) internal successors, (14533), 111 states have internal predecessors, (14533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:49,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 112 states, 112 states have (on average 227.0) internal successors, (25424), 112 states have internal predecessors, (25424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:49,645 INFO L81 ComplementDD]: Finished complementDD. Result has 112 states, 112 states have (on average 227.0) internal successors, (25424), 112 states have internal predecessors, (25424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:49,646 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 455 predicate places. [2023-12-09 15:15:49,646 INFO L500 AbstractCegarLoop]: Abstraction has has 664 places, 2597 transitions, 45792 flow [2023-12-09 15:15:49,647 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 127.3859649122807) internal successors, (7261), 57 states have internal predecessors, (7261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:49,647 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:15:49,648 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:15:49,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 15:15:49,859 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-09 15:15:49,859 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:15:49,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:15:49,860 INFO L85 PathProgramCache]: Analyzing trace with hash 456521426, now seen corresponding path program 6 times [2023-12-09 15:15:49,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:15:49,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348109398] [2023-12-09 15:15:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:15:49,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:15:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:15:50,872 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:50,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:15:50,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348109398] [2023-12-09 15:15:50,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348109398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:15:50,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683061019] [2023-12-09 15:15:50,873 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:15:50,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:15:50,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:15:50,874 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:15:50,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 15:15:51,007 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-12-09 15:15:51,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:15:51,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-09 15:15:51,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:15:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:51,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:15:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:52,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683061019] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:15:52,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:15:52,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 21] total 50 [2023-12-09 15:15:52,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968511398] [2023-12-09 15:15:52,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:15:52,916 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-12-09 15:15:52,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:15:52,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-12-09 15:15:52,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2296, Unknown=0, NotChecked=0, Total=2450 [2023-12-09 15:15:52,921 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 227 [2023-12-09 15:15:52,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 2597 transitions, 45792 flow. Second operand has 50 states, 50 states have (on average 142.3) internal successors, (7115), 50 states have internal predecessors, (7115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:15:52,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:15:52,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 227 [2023-12-09 15:15:52,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:16:29,342 INFO L124 PetriNetUnfolderBase]: 32300/110064 cut-off events. [2023-12-09 15:16:29,342 INFO L125 PetriNetUnfolderBase]: For 969986/992341 co-relation queries the response was YES. [2023-12-09 15:16:30,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545309 conditions, 110064 events. 32300/110064 cut-off events. For 969986/992341 co-relation queries the response was YES. Maximal size of possible extension queue 1392. Compared 1482599 event pairs, 7933 based on Foata normal form. 167/102818 useless extension candidates. Maximal degree in co-relation 499436. Up to 45180 conditions per place. [2023-12-09 15:16:30,726 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 1743 selfloop transitions, 403 changer transitions 356/3034 dead transitions. [2023-12-09 15:16:30,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 3034 transitions, 57618 flow [2023-12-09 15:16:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-09 15:16:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-12-09 15:16:30,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 7292 transitions. [2023-12-09 15:16:30,731 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6555785309718601 [2023-12-09 15:16:30,732 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 7292 transitions. [2023-12-09 15:16:30,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 7292 transitions. [2023-12-09 15:16:30,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:16:30,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 7292 transitions. [2023-12-09 15:16:30,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 148.81632653061226) internal successors, (7292), 49 states have internal predecessors, (7292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:16:30,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 227.0) internal successors, (11350), 50 states have internal predecessors, (11350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:16:30,753 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 227.0) internal successors, (11350), 50 states have internal predecessors, (11350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:16:30,753 INFO L308 CegarLoopForPetriNet]: 209 programPoint places, 503 predicate places. [2023-12-09 15:16:30,753 INFO L500 AbstractCegarLoop]: Abstraction has has 712 places, 3034 transitions, 57618 flow [2023-12-09 15:16:30,754 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 142.3) internal successors, (7115), 50 states have internal predecessors, (7115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:16:30,754 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:16:30,754 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:16:30,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-09 15:16:30,960 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-09 15:16:30,961 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:16:30,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:16:30,961 INFO L85 PathProgramCache]: Analyzing trace with hash -923191326, now seen corresponding path program 7 times [2023-12-09 15:16:30,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:16:30,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058639425] [2023-12-09 15:16:30,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:16:30,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:16:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:16:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:16:31,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:16:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058639425] [2023-12-09 15:16:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058639425] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:16:31,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609710462] [2023-12-09 15:16:31,761 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:16:31,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:16:31,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:16:31,762 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:16:31,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-09 15:16:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:16:31,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 53 conjunts are in the unsatisfiable core [2023-12-09 15:16:31,897 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:16:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:16:33,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:16:34,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:16:34,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609710462] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:16:34,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:16:34,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 29, 24] total 62 [2023-12-09 15:16:34,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070595429] [2023-12-09 15:16:34,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:16:34,424 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-12-09 15:16:34,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:16:34,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-12-09 15:16:34,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3570, Unknown=0, NotChecked=0, Total=3782 [2023-12-09 15:16:34,429 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 227 [2023-12-09 15:16:34,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 3034 transitions, 57618 flow. Second operand has 62 states, 62 states have (on average 116.61290322580645) internal successors, (7230), 62 states have internal predecessors, (7230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:16:34,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:16:34,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 227 [2023-12-09 15:16:34,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand