/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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-175f719-m [2023-11-29 21:16:05,426 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 21:16:05,497 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-29 21:16:05,531 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 21:16:05,532 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 21:16:05,533 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 21:16:05,533 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 21:16:05,534 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 21:16:05,534 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 21:16:05,538 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 21:16:05,539 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 21:16:05,539 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 21:16:05,539 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 21:16:05,540 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 21:16:05,540 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 21:16:05,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 21:16:05,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 21:16:05,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 21:16:05,541 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 21:16:05,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 21:16:05,542 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 21:16:05,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 21:16:05,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 21:16:05,543 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 21:16:05,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 21:16:05,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:16:05,544 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 21:16:05,544 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 21:16:05,544 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 21:16:05,544 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 21:16:05,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 21:16:05,545 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 21:16:05,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 21:16:05,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 21:16:05,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 21:16:05,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 21:16:05,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 21:16:05,740 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 21:16:05,740 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 21:16:05,741 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-11-29 21:16:06,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 21:16:07,116 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 21:16:07,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/fibonacci.wvr.c [2023-11-29 21:16:07,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74d8fef42/cb5bab6b160b42ac9413c16de9c7d019/FLAG29af20470 [2023-11-29 21:16:07,132 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74d8fef42/cb5bab6b160b42ac9413c16de9c7d019 [2023-11-29 21:16:07,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 21:16:07,135 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 21:16:07,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 21:16:07,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 21:16:07,139 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 21:16:07,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606653a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07, skipping insertion in model container [2023-11-29 21:16:07,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,162 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 21:16:07,332 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] [2023-11-29 21:16:07,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:16:07,359 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 21:16:07,385 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] [2023-11-29 21:16:07,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:16:07,403 INFO L206 MainTranslator]: Completed translation [2023-11-29 21:16:07,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07 WrapperNode [2023-11-29 21:16:07,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 21:16:07,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 21:16:07,405 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 21:16:07,405 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 21:16:07,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,415 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,435 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 172 [2023-11-29 21:16:07,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 21:16:07,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 21:16:07,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 21:16:07,436 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 21:16:07,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,451 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,451 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,456 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,463 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 21:16:07,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 21:16:07,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 21:16:07,463 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 21:16:07,484 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (1/1) ... [2023-11-29 21:16:07,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:16:07,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:07,515 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-29 21:16:07,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-29 21:16:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 21:16:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 21:16:07,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 21:16:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 21:16:07,548 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 21:16:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 21:16:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 21:16:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 21:16:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 21:16:07,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 21:16:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 21:16:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 21:16:07,551 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 21:16:07,673 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 21:16:07,675 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 21:16:07,994 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 21:16:08,012 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 21:16:08,012 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 21:16:08,013 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:08 BoogieIcfgContainer [2023-11-29 21:16:08,014 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 21:16:08,017 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 21:16:08,018 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 21:16:08,020 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 21:16:08,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:16:07" (1/3) ... [2023-11-29 21:16:08,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32684998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:16:08, skipping insertion in model container [2023-11-29 21:16:08,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:16:07" (2/3) ... [2023-11-29 21:16:08,022 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32684998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:16:08, skipping insertion in model container [2023-11-29 21:16:08,022 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:16:08" (3/3) ... [2023-11-29 21:16:08,023 INFO L112 eAbstractionObserver]: Analyzing ICFG fibonacci.wvr.c [2023-11-29 21:16:08,037 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 21:16:08,037 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 21:16:08,037 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 21:16:08,155 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 21:16:08,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 220 places, 227 transitions, 468 flow [2023-11-29 21:16:08,280 INFO L124 PetriNetUnfolderBase]: 14/225 cut-off events. [2023-11-29 21:16:08,281 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 21:16:08,288 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. [2023-11-29 21:16:08,288 INFO L82 GeneralOperation]: Start removeDead. Operand has 220 places, 227 transitions, 468 flow [2023-11-29 21:16:08,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 216 transitions, 444 flow [2023-11-29 21:16:08,310 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 21:16:08,320 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;@60705774, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 21:16:08,320 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 21:16:08,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 21:16:08,364 INFO L124 PetriNetUnfolderBase]: 8/163 cut-off events. [2023-11-29 21:16:08,364 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 21:16:08,364 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:08,365 INFO L232 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] [2023-11-29 21:16:08,365 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:08,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash 981322998, now seen corresponding path program 1 times [2023-11-29 21:16:08,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:08,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441788450] [2023-11-29 21:16:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:08,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:09,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:09,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441788450] [2023-11-29 21:16:09,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441788450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:16:09,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:16:09,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 21:16:09,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308209354] [2023-11-29 21:16:09,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:16:09,447 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 21:16:09,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 21:16:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 21:16:09,481 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 227 [2023-11-29 21:16:09,489 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) [2023-11-29 21:16:09,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:09,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 227 [2023-11-29 21:16:09,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:09,909 INFO L124 PetriNetUnfolderBase]: 57/792 cut-off events. [2023-11-29 21:16:09,909 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-11-29 21:16:09,915 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. [2023-11-29 21:16:09,919 INFO L140 encePairwiseOnDemand]: 203/227 looper letters, 43 selfloop transitions, 7 changer transitions 10/230 dead transitions. [2023-11-29 21:16:09,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 230 transitions, 610 flow [2023-11-29 21:16:09,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 21:16:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 21:16:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2244 transitions. [2023-11-29 21:16:09,942 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8237885462555066 [2023-11-29 21:16:09,943 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2244 transitions. [2023-11-29 21:16:09,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2244 transitions. [2023-11-29 21:16:09,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:09,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2244 transitions. [2023-11-29 21:16:09,957 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) [2023-11-29 21:16:09,968 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) [2023-11-29 21:16:09,970 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) [2023-11-29 21:16:09,975 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 11 predicate places. [2023-11-29 21:16:09,975 INFO L500 AbstractCegarLoop]: Abstraction has has 220 places, 230 transitions, 610 flow [2023-11-29 21:16:09,976 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) [2023-11-29 21:16:09,977 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:09,977 INFO L232 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] [2023-11-29 21:16:09,977 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 21:16:09,978 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:09,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:09,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2137154394, now seen corresponding path program 2 times [2023-11-29 21:16:09,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:09,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595145155] [2023-11-29 21:16:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:09,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:10,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:10,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:10,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595145155] [2023-11-29 21:16:10,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595145155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:16:10,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:16:10,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 21:16:10,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859114676] [2023-11-29 21:16:10,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:16:10,425 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 21:16:10,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:10,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 21:16:10,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 21:16:10,430 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 227 [2023-11-29 21:16:10,431 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) [2023-11-29 21:16:10,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:10,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 227 [2023-11-29 21:16:10,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:10,741 INFO L124 PetriNetUnfolderBase]: 57/767 cut-off events. [2023-11-29 21:16:10,742 INFO L125 PetriNetUnfolderBase]: For 140/170 co-relation queries the response was YES. [2023-11-29 21:16:10,743 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. [2023-11-29 21:16:10,746 INFO L140 encePairwiseOnDemand]: 215/227 looper letters, 37 selfloop transitions, 8 changer transitions 16/231 dead transitions. [2023-11-29 21:16:10,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 739 flow [2023-11-29 21:16:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 21:16:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 21:16:10,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2218 transitions. [2023-11-29 21:16:10,753 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8142437591776799 [2023-11-29 21:16:10,753 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2218 transitions. [2023-11-29 21:16:10,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2218 transitions. [2023-11-29 21:16:10,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:10,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2218 transitions. [2023-11-29 21:16:10,759 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) [2023-11-29 21:16:10,764 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) [2023-11-29 21:16:10,765 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) [2023-11-29 21:16:10,766 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 22 predicate places. [2023-11-29 21:16:10,766 INFO L500 AbstractCegarLoop]: Abstraction has has 231 places, 231 transitions, 739 flow [2023-11-29 21:16:10,767 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) [2023-11-29 21:16:10,767 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:10,767 INFO L232 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] [2023-11-29 21:16:10,768 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 21:16:10,768 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:10,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:10,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1587042304, now seen corresponding path program 1 times [2023-11-29 21:16:10,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:10,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688751987] [2023-11-29 21:16:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:10,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:10,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:10,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688751987] [2023-11-29 21:16:10,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688751987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:16:10,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:16:10,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 21:16:10,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204548380] [2023-11-29 21:16:10,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:16:10,926 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:16:10,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:16:10,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 21:16:10,929 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:10,930 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) [2023-11-29 21:16:10,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:10,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:10,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:11,164 INFO L124 PetriNetUnfolderBase]: 191/1623 cut-off events. [2023-11-29 21:16:11,164 INFO L125 PetriNetUnfolderBase]: For 502/562 co-relation queries the response was YES. [2023-11-29 21:16:11,173 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. [2023-11-29 21:16:11,180 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 41 selfloop transitions, 6 changer transitions 25/266 dead transitions. [2023-11-29 21:16:11,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 266 transitions, 978 flow [2023-11-29 21:16:11,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 21:16:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 21:16:11,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1424 transitions. [2023-11-29 21:16:11,184 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8961611076148521 [2023-11-29 21:16:11,184 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1424 transitions. [2023-11-29 21:16:11,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1424 transitions. [2023-11-29 21:16:11,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:11,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1424 transitions. [2023-11-29 21:16:11,188 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) [2023-11-29 21:16:11,191 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) [2023-11-29 21:16:11,192 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) [2023-11-29 21:16:11,193 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 28 predicate places. [2023-11-29 21:16:11,193 INFO L500 AbstractCegarLoop]: Abstraction has has 237 places, 266 transitions, 978 flow [2023-11-29 21:16:11,193 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) [2023-11-29 21:16:11,194 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:11,194 INFO L232 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] [2023-11-29 21:16:11,194 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 21:16:11,194 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:11,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:11,195 INFO L85 PathProgramCache]: Analyzing trace with hash -823144466, now seen corresponding path program 2 times [2023-11-29 21:16:11,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:11,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323511864] [2023-11-29 21:16:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:11,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:11,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:11,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323511864] [2023-11-29 21:16:11,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323511864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:16:11,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123472311] [2023-11-29 21:16:11,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:16:11,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:16:11,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:11,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:16:11,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 21:16:11,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:16:11,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:16:11,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 21:16:11,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:16:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:11,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:16:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:11,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123472311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:16:11,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:16:11,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-11-29 21:16:11,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737103023] [2023-11-29 21:16:11,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:16:11,720 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 21:16:11,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:11,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 21:16:11,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 21:16:11,725 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:11,726 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) [2023-11-29 21:16:11,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:11,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:11,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:12,370 INFO L124 PetriNetUnfolderBase]: 320/3928 cut-off events. [2023-11-29 21:16:12,370 INFO L125 PetriNetUnfolderBase]: For 1150/1330 co-relation queries the response was YES. [2023-11-29 21:16:12,384 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. [2023-11-29 21:16:12,398 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 94 selfloop transitions, 61 changer transitions 31/380 dead transitions. [2023-11-29 21:16:12,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 380 transitions, 1866 flow [2023-11-29 21:16:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 21:16:12,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 21:16:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2830 transitions. [2023-11-29 21:16:12,405 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8904971680302077 [2023-11-29 21:16:12,405 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2830 transitions. [2023-11-29 21:16:12,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2830 transitions. [2023-11-29 21:16:12,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:12,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2830 transitions. [2023-11-29 21:16:12,412 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) [2023-11-29 21:16:12,418 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) [2023-11-29 21:16:12,419 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) [2023-11-29 21:16:12,420 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 41 predicate places. [2023-11-29 21:16:12,420 INFO L500 AbstractCegarLoop]: Abstraction has has 250 places, 380 transitions, 1866 flow [2023-11-29 21:16:12,421 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) [2023-11-29 21:16:12,421 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:12,421 INFO L232 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] [2023-11-29 21:16:12,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 21:16:12,627 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 [2023-11-29 21:16:12,628 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:12,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:12,628 INFO L85 PathProgramCache]: Analyzing trace with hash 945299720, now seen corresponding path program 1 times [2023-11-29 21:16:12,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:12,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922849989] [2023-11-29 21:16:12,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:12,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:12,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:12,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922849989] [2023-11-29 21:16:12,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922849989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:16:12,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:16:12,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 21:16:12,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239517706] [2023-11-29 21:16:12,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:16:12,751 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:16:12,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:12,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:16:12,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 21:16:12,753 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:12,754 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) [2023-11-29 21:16:12,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:12,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:12,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:13,314 INFO L124 PetriNetUnfolderBase]: 322/3811 cut-off events. [2023-11-29 21:16:13,314 INFO L125 PetriNetUnfolderBase]: For 1820/2187 co-relation queries the response was YES. [2023-11-29 21:16:13,324 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. [2023-11-29 21:16:13,336 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 148 selfloop transitions, 21 changer transitions 50/413 dead transitions. [2023-11-29 21:16:13,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 413 transitions, 2506 flow [2023-11-29 21:16:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 21:16:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 21:16:13,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1426 transitions. [2023-11-29 21:16:13,340 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8974197608558842 [2023-11-29 21:16:13,340 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1426 transitions. [2023-11-29 21:16:13,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1426 transitions. [2023-11-29 21:16:13,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:13,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1426 transitions. [2023-11-29 21:16:13,343 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) [2023-11-29 21:16:13,346 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) [2023-11-29 21:16:13,346 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) [2023-11-29 21:16:13,347 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 47 predicate places. [2023-11-29 21:16:13,347 INFO L500 AbstractCegarLoop]: Abstraction has has 256 places, 413 transitions, 2506 flow [2023-11-29 21:16:13,348 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) [2023-11-29 21:16:13,348 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:13,348 INFO L232 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] [2023-11-29 21:16:13,348 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 21:16:13,348 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:13,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:13,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2065485120, now seen corresponding path program 2 times [2023-11-29 21:16:13,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:13,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261103995] [2023-11-29 21:16:13,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:13,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:13,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:13,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261103995] [2023-11-29 21:16:13,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261103995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:16:13,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164099158] [2023-11-29 21:16:13,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:16:13,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:16:13,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:13,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:16:13,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 21:16:13,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:16:13,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:16:13,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 21:16:13,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:16:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:13,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:16:13,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164099158] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:16:13,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:16:13,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2023-11-29 21:16:13,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775430020] [2023-11-29 21:16:13,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:16:13,722 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 21:16:13,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 21:16:13,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 21:16:13,725 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:13,726 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) [2023-11-29 21:16:13,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:13,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:13,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:14,461 INFO L124 PetriNetUnfolderBase]: 367/4360 cut-off events. [2023-11-29 21:16:14,462 INFO L125 PetriNetUnfolderBase]: For 2618/3223 co-relation queries the response was YES. [2023-11-29 21:16:14,472 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. [2023-11-29 21:16:14,484 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 138 selfloop transitions, 103 changer transitions 52/487 dead transitions. [2023-11-29 21:16:14,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 487 transitions, 3695 flow [2023-11-29 21:16:14,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 21:16:14,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 21:16:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2827 transitions. [2023-11-29 21:16:14,493 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8895531780994336 [2023-11-29 21:16:14,493 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2827 transitions. [2023-11-29 21:16:14,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2827 transitions. [2023-11-29 21:16:14,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:14,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2827 transitions. [2023-11-29 21:16:14,500 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) [2023-11-29 21:16:14,505 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) [2023-11-29 21:16:14,505 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) [2023-11-29 21:16:14,506 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 60 predicate places. [2023-11-29 21:16:14,506 INFO L500 AbstractCegarLoop]: Abstraction has has 269 places, 487 transitions, 3695 flow [2023-11-29 21:16:14,507 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) [2023-11-29 21:16:14,507 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:14,507 INFO L232 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] [2023-11-29 21:16:14,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 21:16:14,713 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 [2023-11-29 21:16:14,713 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:14,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash -39754456, now seen corresponding path program 3 times [2023-11-29 21:16:14,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:14,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140850071] [2023-11-29 21:16:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:14,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:14,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:14,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140850071] [2023-11-29 21:16:14,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140850071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:16:14,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:16:14,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 21:16:14,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858494954] [2023-11-29 21:16:14,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:16:14,802 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:16:14,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:16:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 21:16:14,804 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:14,805 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) [2023-11-29 21:16:14,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:14,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:14,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:15,394 INFO L124 PetriNetUnfolderBase]: 409/4759 cut-off events. [2023-11-29 21:16:15,394 INFO L125 PetriNetUnfolderBase]: For 3759/4536 co-relation queries the response was YES. [2023-11-29 21:16:15,414 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. [2023-11-29 21:16:15,429 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 219 selfloop transitions, 46 changer transitions 59/518 dead transitions. [2023-11-29 21:16:15,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 518 transitions, 4629 flow [2023-11-29 21:16:15,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 21:16:15,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 21:16:15,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1235 transitions. [2023-11-29 21:16:15,432 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.906754772393539 [2023-11-29 21:16:15,433 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1235 transitions. [2023-11-29 21:16:15,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1235 transitions. [2023-11-29 21:16:15,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:15,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1235 transitions. [2023-11-29 21:16:15,436 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) [2023-11-29 21:16:15,438 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) [2023-11-29 21:16:15,439 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) [2023-11-29 21:16:15,439 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 65 predicate places. [2023-11-29 21:16:15,439 INFO L500 AbstractCegarLoop]: Abstraction has has 274 places, 518 transitions, 4629 flow [2023-11-29 21:16:15,440 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) [2023-11-29 21:16:15,440 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:15,440 INFO L232 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] [2023-11-29 21:16:15,440 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 21:16:15,440 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:15,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:15,441 INFO L85 PathProgramCache]: Analyzing trace with hash 690843862, now seen corresponding path program 4 times [2023-11-29 21:16:15,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:15,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928919020] [2023-11-29 21:16:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:15,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:15,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:15,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928919020] [2023-11-29 21:16:15,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928919020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:16:15,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:16:15,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 21:16:15,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894798102] [2023-11-29 21:16:15,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:16:15,528 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:16:15,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:15,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:16:15,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 21:16:15,530 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:15,531 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) [2023-11-29 21:16:15,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:15,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:15,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:16,136 INFO L124 PetriNetUnfolderBase]: 394/4642 cut-off events. [2023-11-29 21:16:16,136 INFO L125 PetriNetUnfolderBase]: For 5013/6104 co-relation queries the response was YES. [2023-11-29 21:16:16,155 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. [2023-11-29 21:16:16,174 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 219 selfloop transitions, 36 changer transitions 59/508 dead transitions. [2023-11-29 21:16:16,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 508 transitions, 5113 flow [2023-11-29 21:16:16,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 21:16:16,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 21:16:16,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1026 transitions. [2023-11-29 21:16:16,177 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9039647577092511 [2023-11-29 21:16:16,177 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1026 transitions. [2023-11-29 21:16:16,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1026 transitions. [2023-11-29 21:16:16,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:16,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1026 transitions. [2023-11-29 21:16:16,180 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) [2023-11-29 21:16:16,182 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) [2023-11-29 21:16:16,182 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) [2023-11-29 21:16:16,184 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 69 predicate places. [2023-11-29 21:16:16,184 INFO L500 AbstractCegarLoop]: Abstraction has has 278 places, 508 transitions, 5113 flow [2023-11-29 21:16:16,185 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) [2023-11-29 21:16:16,185 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:16,185 INFO L232 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] [2023-11-29 21:16:16,185 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 21:16:16,185 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:16,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:16,188 INFO L85 PathProgramCache]: Analyzing trace with hash -91478450, now seen corresponding path program 5 times [2023-11-29 21:16:16,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:16,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639275519] [2023-11-29 21:16:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:16,295 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:16,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:16,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639275519] [2023-11-29 21:16:16,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639275519] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:16:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916144379] [2023-11-29 21:16:16,298 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 21:16:16,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:16:16,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:16,299 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:16:16,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 21:16:16,399 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:16:16,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:16:16,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 21:16:16,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:16:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:16,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:16:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:16,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916144379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:16:16,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:16:16,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-29 21:16:16,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819324999] [2023-11-29 21:16:16,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:16:16,667 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 21:16:16,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 21:16:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-29 21:16:16,670 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:16,672 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) [2023-11-29 21:16:16,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:16,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:16,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:17,491 INFO L124 PetriNetUnfolderBase]: 487/5713 cut-off events. [2023-11-29 21:16:17,491 INFO L125 PetriNetUnfolderBase]: For 8227/9976 co-relation queries the response was YES. [2023-11-29 21:16:17,511 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. [2023-11-29 21:16:17,528 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 199 selfloop transitions, 112 changer transitions 59/564 dead transitions. [2023-11-29 21:16:17,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 564 transitions, 6634 flow [2023-11-29 21:16:17,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 21:16:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 21:16:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2631 transitions. [2023-11-29 21:16:17,534 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.891562182311081 [2023-11-29 21:16:17,534 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2631 transitions. [2023-11-29 21:16:17,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2631 transitions. [2023-11-29 21:16:17,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:17,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2631 transitions. [2023-11-29 21:16:17,539 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) [2023-11-29 21:16:17,544 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) [2023-11-29 21:16:17,544 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) [2023-11-29 21:16:17,545 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 81 predicate places. [2023-11-29 21:16:17,545 INFO L500 AbstractCegarLoop]: Abstraction has has 290 places, 564 transitions, 6634 flow [2023-11-29 21:16:17,545 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) [2023-11-29 21:16:17,545 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:17,546 INFO L232 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] [2023-11-29 21:16:17,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 21:16:17,751 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 [2023-11-29 21:16:17,752 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:17,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:17,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1617253452, now seen corresponding path program 3 times [2023-11-29 21:16:17,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:17,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288012772] [2023-11-29 21:16:17,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:17,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:17,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:17,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288012772] [2023-11-29 21:16:17,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288012772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:16:17,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:16:17,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 21:16:17,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401881777] [2023-11-29 21:16:17,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:16:17,835 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:16:17,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:16:17,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 21:16:17,837 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:17,838 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) [2023-11-29 21:16:17,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:17,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:17,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:18,632 INFO L124 PetriNetUnfolderBase]: 486/5697 cut-off events. [2023-11-29 21:16:18,632 INFO L125 PetriNetUnfolderBase]: For 10405/12001 co-relation queries the response was YES. [2023-11-29 21:16:18,655 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. [2023-11-29 21:16:18,675 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 275 selfloop transitions, 34 changer transitions 67/570 dead transitions. [2023-11-29 21:16:18,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 570 transitions, 7479 flow [2023-11-29 21:16:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 21:16:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 21:16:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1223 transitions. [2023-11-29 21:16:18,678 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8979441997063142 [2023-11-29 21:16:18,678 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1223 transitions. [2023-11-29 21:16:18,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1223 transitions. [2023-11-29 21:16:18,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:18,679 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1223 transitions. [2023-11-29 21:16:18,681 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) [2023-11-29 21:16:18,683 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) [2023-11-29 21:16:18,683 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) [2023-11-29 21:16:18,684 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 86 predicate places. [2023-11-29 21:16:18,684 INFO L500 AbstractCegarLoop]: Abstraction has has 295 places, 570 transitions, 7479 flow [2023-11-29 21:16:18,684 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) [2023-11-29 21:16:18,684 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:18,684 INFO L232 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] [2023-11-29 21:16:18,685 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 21:16:18,685 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:18,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:18,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1109512756, now seen corresponding path program 4 times [2023-11-29 21:16:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:18,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407806319] [2023-11-29 21:16:18,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:18,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:18,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:18,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407806319] [2023-11-29 21:16:18,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407806319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:16:18,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843890474] [2023-11-29 21:16:18,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:16:18,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:16:18,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:18,796 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:16:18,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 21:16:18,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:16:18,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:16:18,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 21:16:18,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:16:19,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:19,064 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:16:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:19,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843890474] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:16:19,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:16:19,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-29 21:16:19,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425715680] [2023-11-29 21:16:19,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:16:19,150 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 21:16:19,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:19,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 21:16:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 21:16:19,153 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:19,155 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) [2023-11-29 21:16:19,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:19,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:19,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:19,908 INFO L124 PetriNetUnfolderBase]: 494/6066 cut-off events. [2023-11-29 21:16:19,908 INFO L125 PetriNetUnfolderBase]: For 13121/15168 co-relation queries the response was YES. [2023-11-29 21:16:19,925 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. [2023-11-29 21:16:19,946 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 241 selfloop transitions, 91 changer transitions 67/593 dead transitions. [2023-11-29 21:16:19,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 593 transitions, 8667 flow [2023-11-29 21:16:19,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 21:16:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 21:16:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1830 transitions. [2023-11-29 21:16:19,950 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.895741556534508 [2023-11-29 21:16:19,950 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1830 transitions. [2023-11-29 21:16:19,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1830 transitions. [2023-11-29 21:16:19,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:19,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1830 transitions. [2023-11-29 21:16:20,036 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) [2023-11-29 21:16:20,038 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) [2023-11-29 21:16:20,038 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) [2023-11-29 21:16:20,038 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 94 predicate places. [2023-11-29 21:16:20,038 INFO L500 AbstractCegarLoop]: Abstraction has has 303 places, 593 transitions, 8667 flow [2023-11-29 21:16:20,039 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) [2023-11-29 21:16:20,039 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:20,039 INFO L232 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] [2023-11-29 21:16:20,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 21:16:20,244 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 [2023-11-29 21:16:20,245 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:20,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:20,245 INFO L85 PathProgramCache]: Analyzing trace with hash -236532478, now seen corresponding path program 6 times [2023-11-29 21:16:20,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:20,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749803497] [2023-11-29 21:16:20,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:20,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:20,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:20,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749803497] [2023-11-29 21:16:20,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749803497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:16:20,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:16:20,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 21:16:20,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501357380] [2023-11-29 21:16:20,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:16:20,338 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:16:20,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:20,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:16:20,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 21:16:20,341 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:20,342 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) [2023-11-29 21:16:20,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:20,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:20,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:21,069 INFO L124 PetriNetUnfolderBase]: 491/5965 cut-off events. [2023-11-29 21:16:21,071 INFO L125 PetriNetUnfolderBase]: For 15722/17621 co-relation queries the response was YES. [2023-11-29 21:16:21,098 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. [2023-11-29 21:16:21,119 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 275 selfloop transitions, 49 changer transitions 67/585 dead transitions. [2023-11-29 21:16:21,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 585 transitions, 9265 flow [2023-11-29 21:16:21,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 21:16:21,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 21:16:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1028 transitions. [2023-11-29 21:16:21,121 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.905726872246696 [2023-11-29 21:16:21,121 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1028 transitions. [2023-11-29 21:16:21,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1028 transitions. [2023-11-29 21:16:21,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:21,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1028 transitions. [2023-11-29 21:16:21,123 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) [2023-11-29 21:16:21,124 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) [2023-11-29 21:16:21,125 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) [2023-11-29 21:16:21,125 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 98 predicate places. [2023-11-29 21:16:21,125 INFO L500 AbstractCegarLoop]: Abstraction has has 307 places, 585 transitions, 9265 flow [2023-11-29 21:16:21,126 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) [2023-11-29 21:16:21,126 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:21,126 INFO L232 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] [2023-11-29 21:16:21,126 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 21:16:21,126 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:21,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:21,126 INFO L85 PathProgramCache]: Analyzing trace with hash 61509956, now seen corresponding path program 7 times [2023-11-29 21:16:21,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:21,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395692293] [2023-11-29 21:16:21,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:21,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:21,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:21,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395692293] [2023-11-29 21:16:21,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395692293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:16:21,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:16:21,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 21:16:21,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90047892] [2023-11-29 21:16:21,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:16:21,203 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:16:21,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:21,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:16:21,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 21:16:21,205 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:21,206 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) [2023-11-29 21:16:21,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:21,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:21,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:21,902 INFO L124 PetriNetUnfolderBase]: 482/5835 cut-off events. [2023-11-29 21:16:21,902 INFO L125 PetriNetUnfolderBase]: For 18479/20788 co-relation queries the response was YES. [2023-11-29 21:16:21,913 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. [2023-11-29 21:16:21,930 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 271 selfloop transitions, 40 changer transitions 72/574 dead transitions. [2023-11-29 21:16:21,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 574 transitions, 9795 flow [2023-11-29 21:16:21,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 21:16:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 21:16:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1224 transitions. [2023-11-29 21:16:21,934 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8986784140969163 [2023-11-29 21:16:21,935 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1224 transitions. [2023-11-29 21:16:21,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1224 transitions. [2023-11-29 21:16:21,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:21,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1224 transitions. [2023-11-29 21:16:21,940 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) [2023-11-29 21:16:21,941 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) [2023-11-29 21:16:21,942 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) [2023-11-29 21:16:21,943 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 103 predicate places. [2023-11-29 21:16:21,943 INFO L500 AbstractCegarLoop]: Abstraction has has 312 places, 574 transitions, 9795 flow [2023-11-29 21:16:21,943 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) [2023-11-29 21:16:21,943 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:21,944 INFO L232 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] [2023-11-29 21:16:21,944 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 21:16:21,944 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:21,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:21,945 INFO L85 PathProgramCache]: Analyzing trace with hash -614772052, now seen corresponding path program 8 times [2023-11-29 21:16:21,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:21,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657900396] [2023-11-29 21:16:21,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:21,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:22,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:22,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:22,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657900396] [2023-11-29 21:16:22,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657900396] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:16:22,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968896722] [2023-11-29 21:16:22,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:16:22,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:16:22,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:22,036 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) [2023-11-29 21:16:22,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 21:16:22,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:16:22,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:16:22,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 21:16:22,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:16:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:22,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:16:22,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:22,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968896722] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:16:22,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:16:22,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-29 21:16:22,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226834048] [2023-11-29 21:16:22,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:16:22,346 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 21:16:22,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 21:16:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-29 21:16:22,348 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:22,349 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) [2023-11-29 21:16:22,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:22,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:22,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:22,980 INFO L124 PetriNetUnfolderBase]: 466/5751 cut-off events. [2023-11-29 21:16:22,980 INFO L125 PetriNetUnfolderBase]: For 20987/23686 co-relation queries the response was YES. [2023-11-29 21:16:22,996 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. [2023-11-29 21:16:23,015 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 202 selfloop transitions, 90 changer transitions 72/555 dead transitions. [2023-11-29 21:16:23,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 555 transitions, 10020 flow [2023-11-29 21:16:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 21:16:23,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 21:16:23,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1830 transitions. [2023-11-29 21:16:23,018 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.895741556534508 [2023-11-29 21:16:23,018 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1830 transitions. [2023-11-29 21:16:23,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1830 transitions. [2023-11-29 21:16:23,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:23,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1830 transitions. [2023-11-29 21:16:23,021 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) [2023-11-29 21:16:23,023 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) [2023-11-29 21:16:23,024 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) [2023-11-29 21:16:23,024 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 111 predicate places. [2023-11-29 21:16:23,024 INFO L500 AbstractCegarLoop]: Abstraction has has 320 places, 555 transitions, 10020 flow [2023-11-29 21:16:23,025 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) [2023-11-29 21:16:23,025 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:23,025 INFO L232 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] [2023-11-29 21:16:23,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 21:16:23,232 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 [2023-11-29 21:16:23,233 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:23,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:23,233 INFO L85 PathProgramCache]: Analyzing trace with hash 58367180, now seen corresponding path program 5 times [2023-11-29 21:16:23,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:23,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739693909] [2023-11-29 21:16:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:23,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:23,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:23,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739693909] [2023-11-29 21:16:23,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739693909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:16:23,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:16:23,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 21:16:23,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123989559] [2023-11-29 21:16:23,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:16:23,323 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 21:16:23,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:23,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 21:16:23,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 21:16:23,325 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:23,325 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) [2023-11-29 21:16:23,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:23,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:23,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:23,924 INFO L124 PetriNetUnfolderBase]: 454/5537 cut-off events. [2023-11-29 21:16:23,924 INFO L125 PetriNetUnfolderBase]: For 23167/25758 co-relation queries the response was YES. [2023-11-29 21:16:23,945 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. [2023-11-29 21:16:23,961 INFO L140 encePairwiseOnDemand]: 218/227 looper letters, 250 selfloop transitions, 34 changer transitions 76/548 dead transitions. [2023-11-29 21:16:23,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 548 transitions, 10556 flow [2023-11-29 21:16:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 21:16:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 21:16:23,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1224 transitions. [2023-11-29 21:16:23,963 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8986784140969163 [2023-11-29 21:16:23,963 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1224 transitions. [2023-11-29 21:16:23,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1224 transitions. [2023-11-29 21:16:23,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:23,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1224 transitions. [2023-11-29 21:16:23,966 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) [2023-11-29 21:16:23,967 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) [2023-11-29 21:16:23,967 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) [2023-11-29 21:16:23,967 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 116 predicate places. [2023-11-29 21:16:23,968 INFO L500 AbstractCegarLoop]: Abstraction has has 325 places, 548 transitions, 10556 flow [2023-11-29 21:16:23,968 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) [2023-11-29 21:16:23,968 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:23,968 INFO L232 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] [2023-11-29 21:16:23,968 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 21:16:23,968 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:23,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:23,969 INFO L85 PathProgramCache]: Analyzing trace with hash -918196744, now seen corresponding path program 6 times [2023-11-29 21:16:23,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:23,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767486988] [2023-11-29 21:16:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:23,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:23,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:24,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:24,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767486988] [2023-11-29 21:16:24,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767486988] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:16:24,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638081985] [2023-11-29 21:16:24,060 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 21:16:24,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:16:24,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:24,061 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) [2023-11-29 21:16:24,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 21:16:24,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 21:16:24,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:16:24,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 21:16:24,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:16:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:24,300 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:16:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:24,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638081985] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:16:24,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:16:24,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-29 21:16:24,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914205604] [2023-11-29 21:16:24,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:16:24,375 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 21:16:24,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:24,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 21:16:24,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2023-11-29 21:16:24,378 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 227 [2023-11-29 21:16:24,379 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) [2023-11-29 21:16:24,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:24,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 227 [2023-11-29 21:16:24,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:25,280 INFO L124 PetriNetUnfolderBase]: 485/6208 cut-off events. [2023-11-29 21:16:25,281 INFO L125 PetriNetUnfolderBase]: For 27653/30825 co-relation queries the response was YES. [2023-11-29 21:16:25,300 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. [2023-11-29 21:16:25,315 INFO L140 encePairwiseOnDemand]: 217/227 looper letters, 188 selfloop transitions, 107 changer transitions 76/559 dead transitions. [2023-11-29 21:16:25,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 559 transitions, 11557 flow [2023-11-29 21:16:25,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 21:16:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 21:16:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2430 transitions. [2023-11-29 21:16:25,319 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8920704845814978 [2023-11-29 21:16:25,319 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2430 transitions. [2023-11-29 21:16:25,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2430 transitions. [2023-11-29 21:16:25,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:25,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2430 transitions. [2023-11-29 21:16:25,323 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) [2023-11-29 21:16:25,326 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) [2023-11-29 21:16:25,326 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) [2023-11-29 21:16:25,327 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 126 predicate places. [2023-11-29 21:16:25,327 INFO L500 AbstractCegarLoop]: Abstraction has has 335 places, 559 transitions, 11557 flow [2023-11-29 21:16:25,327 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) [2023-11-29 21:16:25,327 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:25,328 INFO L232 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] [2023-11-29 21:16:25,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 21:16:25,533 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 [2023-11-29 21:16:25,533 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:25,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:25,534 INFO L85 PathProgramCache]: Analyzing trace with hash 266932898, now seen corresponding path program 1 times [2023-11-29 21:16:25,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:25,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459221401] [2023-11-29 21:16:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:25,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:26,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:26,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:26,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459221401] [2023-11-29 21:16:26,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459221401] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:16:26,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944855490] [2023-11-29 21:16:26,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:26,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:16:26,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:26,318 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) [2023-11-29 21:16:26,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 21:16:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:26,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 21:16:26,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:16:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:27,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:16:28,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:28,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944855490] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:16:28,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:16:28,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 45 [2023-11-29 21:16:28,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692600828] [2023-11-29 21:16:28,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:16:28,660 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 21:16:28,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:28,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 21:16:28,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1844, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 21:16:28,666 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-11-29 21:16:28,670 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) [2023-11-29 21:16:28,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:28,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-11-29 21:16:28,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:35,216 INFO L124 PetriNetUnfolderBase]: 5414/26897 cut-off events. [2023-11-29 21:16:35,216 INFO L125 PetriNetUnfolderBase]: For 104779/108620 co-relation queries the response was YES. [2023-11-29 21:16:35,377 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. [2023-11-29 21:16:35,434 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 340 selfloop transitions, 106 changer transitions 87/933 dead transitions. [2023-11-29 21:16:35,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 933 transitions, 14481 flow [2023-11-29 21:16:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-29 21:16:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2023-11-29 21:16:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 10193 transitions. [2023-11-29 21:16:35,445 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6908166723144696 [2023-11-29 21:16:35,445 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 10193 transitions. [2023-11-29 21:16:35,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 10193 transitions. [2023-11-29 21:16:35,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:35,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 10193 transitions. [2023-11-29 21:16:35,458 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) [2023-11-29 21:16:35,471 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) [2023-11-29 21:16:35,472 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) [2023-11-29 21:16:35,472 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 190 predicate places. [2023-11-29 21:16:35,473 INFO L500 AbstractCegarLoop]: Abstraction has has 399 places, 933 transitions, 14481 flow [2023-11-29 21:16:35,474 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) [2023-11-29 21:16:35,474 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:35,474 INFO L232 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] [2023-11-29 21:16:35,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 21:16:35,686 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 [2023-11-29 21:16:35,687 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:35,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1596949294, now seen corresponding path program 2 times [2023-11-29 21:16:35,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662464778] [2023-11-29 21:16:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:36,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:36,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662464778] [2023-11-29 21:16:36,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662464778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:16:36,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920922044] [2023-11-29 21:16:36,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:16:36,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:16:36,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:36,456 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) [2023-11-29 21:16:36,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 21:16:36,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:16:36,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:16:36,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 21:16:36,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:16:37,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:37,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:16:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:38,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920922044] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:16:38,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:16:38,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 45 [2023-11-29 21:16:38,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311700092] [2023-11-29 21:16:38,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:16:38,457 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 21:16:38,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:38,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 21:16:38,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1844, Unknown=0, NotChecked=0, Total=1980 [2023-11-29 21:16:38,463 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-11-29 21:16:38,467 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) [2023-11-29 21:16:38,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:38,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-11-29 21:16:38,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:45,808 INFO L124 PetriNetUnfolderBase]: 6739/32970 cut-off events. [2023-11-29 21:16:45,808 INFO L125 PetriNetUnfolderBase]: For 146401/154196 co-relation queries the response was YES. [2023-11-29 21:16:45,925 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. [2023-11-29 21:16:46,021 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 605 selfloop transitions, 194 changer transitions 97/1296 dead transitions. [2023-11-29 21:16:46,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1296 transitions, 19041 flow [2023-11-29 21:16:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-29 21:16:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-11-29 21:16:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 9891 transitions. [2023-11-29 21:16:46,031 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6916299559471366 [2023-11-29 21:16:46,031 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 9891 transitions. [2023-11-29 21:16:46,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 9891 transitions. [2023-11-29 21:16:46,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:46,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 9891 transitions. [2023-11-29 21:16:46,046 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) [2023-11-29 21:16:46,060 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) [2023-11-29 21:16:46,062 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) [2023-11-29 21:16:46,062 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 252 predicate places. [2023-11-29 21:16:46,063 INFO L500 AbstractCegarLoop]: Abstraction has has 461 places, 1296 transitions, 19041 flow [2023-11-29 21:16:46,064 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) [2023-11-29 21:16:46,064 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:46,064 INFO L232 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] [2023-11-29 21:16:46,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 21:16:46,269 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 [2023-11-29 21:16:46,270 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:46,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:46,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1500801852, now seen corresponding path program 3 times [2023-11-29 21:16:46,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:46,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773069576] [2023-11-29 21:16:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:46,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:47,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:47,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773069576] [2023-11-29 21:16:47,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773069576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:16:47,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129520386] [2023-11-29 21:16:47,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:16:47,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:16:47,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:47,016 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) [2023-11-29 21:16:47,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 21:16:47,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 21:16:47,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:16:47,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 21:16:47,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:16:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:47,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:16:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:49,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129520386] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:16:49,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:16:49,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 48 [2023-11-29 21:16:49,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899964428] [2023-11-29 21:16:49,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:16:49,066 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-29 21:16:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:16:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-29 21:16:49,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=2110, Unknown=0, NotChecked=0, Total=2256 [2023-11-29 21:16:49,071 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-11-29 21:16:49,075 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) [2023-11-29 21:16:49,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:16:49,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-11-29 21:16:49,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:16:57,526 INFO L124 PetriNetUnfolderBase]: 8039/38970 cut-off events. [2023-11-29 21:16:57,526 INFO L125 PetriNetUnfolderBase]: For 190285/202935 co-relation queries the response was YES. [2023-11-29 21:16:57,812 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. [2023-11-29 21:16:57,926 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 904 selfloop transitions, 185 changer transitions 106/1595 dead transitions. [2023-11-29 21:16:57,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 1595 transitions, 24865 flow [2023-11-29 21:16:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 21:16:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-29 21:16:57,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 6961 transitions. [2023-11-29 21:16:57,934 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6969363235883059 [2023-11-29 21:16:57,934 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 6961 transitions. [2023-11-29 21:16:57,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 6961 transitions. [2023-11-29 21:16:57,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:16:57,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 6961 transitions. [2023-11-29 21:16:57,942 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) [2023-11-29 21:16:57,948 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) [2023-11-29 21:16:57,949 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) [2023-11-29 21:16:57,949 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 295 predicate places. [2023-11-29 21:16:57,949 INFO L500 AbstractCegarLoop]: Abstraction has has 504 places, 1595 transitions, 24865 flow [2023-11-29 21:16:57,950 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) [2023-11-29 21:16:57,951 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:16:57,951 INFO L232 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] [2023-11-29 21:16:57,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 21:16:58,160 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 [2023-11-29 21:16:58,161 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:16:58,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:16:58,161 INFO L85 PathProgramCache]: Analyzing trace with hash -604343142, now seen corresponding path program 4 times [2023-11-29 21:16:58,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:16:58,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832650024] [2023-11-29 21:16:58,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:16:58,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:16:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:16:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:58,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:16:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832650024] [2023-11-29 21:16:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832650024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:16:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986833933] [2023-11-29 21:16:58,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:16:58,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:16:58,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:16:58,925 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) [2023-11-29 21:16:58,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 21:16:59,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:16:59,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:16:59,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 21:16:59,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:16:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:16:59,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:17:00,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:17:00,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986833933] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:17:00,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:17:00,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 46 [2023-11-29 21:17:00,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380599379] [2023-11-29 21:17:00,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:17:00,994 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 21:17:00,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:17:00,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 21:17:00,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 21:17:01,000 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-11-29 21:17:01,004 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) [2023-11-29 21:17:01,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:17:01,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-11-29 21:17:01,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:17:10,428 INFO L124 PetriNetUnfolderBase]: 8568/41338 cut-off events. [2023-11-29 21:17:10,428 INFO L125 PetriNetUnfolderBase]: For 223425/240024 co-relation queries the response was YES. [2023-11-29 21:17:10,594 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. [2023-11-29 21:17:10,734 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 1024 selfloop transitions, 224 changer transitions 114/1762 dead transitions. [2023-11-29 21:17:10,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 1762 transitions, 29701 flow [2023-11-29 21:17:10,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-29 21:17:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-29 21:17:10,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 7984 transitions. [2023-11-29 21:17:10,742 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.689643258184331 [2023-11-29 21:17:10,742 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 7984 transitions. [2023-11-29 21:17:10,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 7984 transitions. [2023-11-29 21:17:10,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:17:10,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 7984 transitions. [2023-11-29 21:17:10,750 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) [2023-11-29 21:17:10,757 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) [2023-11-29 21:17:10,758 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) [2023-11-29 21:17:10,759 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 345 predicate places. [2023-11-29 21:17:10,759 INFO L500 AbstractCegarLoop]: Abstraction has has 554 places, 1762 transitions, 29701 flow [2023-11-29 21:17:10,760 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) [2023-11-29 21:17:10,760 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:17:10,760 INFO L232 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] [2023-11-29 21:17:10,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 21:17:10,965 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 [2023-11-29 21:17:10,965 INFO L425 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:17:10,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:17:10,966 INFO L85 PathProgramCache]: Analyzing trace with hash 434021778, now seen corresponding path program 5 times [2023-11-29 21:17:10,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:17:10,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899794888] [2023-11-29 21:17:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:17:10,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:17:10,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:17:11,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:17:11,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:17:11,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899794888] [2023-11-29 21:17:11,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899794888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:17:11,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832510216] [2023-11-29 21:17:11,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 21:17:11,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:17:11,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:17:11,879 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) [2023-11-29 21:17:11,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 21:17:12,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:17:12,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:17:12,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 21:17:12,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:17:13,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:17:13,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:17:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:17:14,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832510216] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:17:14,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:17:14,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 25] total 57 [2023-11-29 21:17:14,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515092696] [2023-11-29 21:17:14,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:17:14,746 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-29 21:17:14,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:17:14,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-29 21:17:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=3002, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 21:17:14,751 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 227 [2023-11-29 21:17:14,754 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) [2023-11-29 21:17:14,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:17:14,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 227 [2023-11-29 21:17:14,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:17:37,268 INFO L124 PetriNetUnfolderBase]: 21909/76591 cut-off events. [2023-11-29 21:17:37,269 INFO L125 PetriNetUnfolderBase]: For 615161/643347 co-relation queries the response was YES. [2023-11-29 21:17:37,662 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. [2023-11-29 21:17:37,962 INFO L140 encePairwiseOnDemand]: 183/227 looper letters, 1498 selfloop transitions, 431 changer transitions 294/2597 dead transitions. [2023-11-29 21:17:37,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 2597 transitions, 45792 flow [2023-11-29 21:17:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2023-11-29 21:17:37,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2023-11-29 21:17:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 14533 transitions. [2023-11-29 21:17:37,977 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5767750128983609 [2023-11-29 21:17:37,977 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 14533 transitions. [2023-11-29 21:17:37,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 14533 transitions. [2023-11-29 21:17:37,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:17:37,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 14533 transitions. [2023-11-29 21:17:38,004 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) [2023-11-29 21:17:38,025 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) [2023-11-29 21:17:38,029 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) [2023-11-29 21:17:38,029 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 455 predicate places. [2023-11-29 21:17:38,029 INFO L500 AbstractCegarLoop]: Abstraction has has 664 places, 2597 transitions, 45792 flow [2023-11-29 21:17:38,030 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) [2023-11-29 21:17:38,031 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:17:38,031 INFO L232 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] [2023-11-29 21:17:38,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 21:17:38,236 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 [2023-11-29 21:17:38,237 INFO L425 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:17:38,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:17:38,237 INFO L85 PathProgramCache]: Analyzing trace with hash 456521426, now seen corresponding path program 6 times [2023-11-29 21:17:38,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:17:38,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219629330] [2023-11-29 21:17:38,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:17:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:17:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:17:39,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:17:39,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:17:39,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219629330] [2023-11-29 21:17:39,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219629330] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:17:39,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033222642] [2023-11-29 21:17:39,260 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 21:17:39,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:17:39,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:17:39,261 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) [2023-11-29 21:17:39,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 21:17:39,360 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-29 21:17:39,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:17:39,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 21:17:39,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:17:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:17:39,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:17:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:17:41,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033222642] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:17:41,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:17:41,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 21] total 50 [2023-11-29 21:17:41,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199106338] [2023-11-29 21:17:41,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:17:41,055 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-29 21:17:41,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:17:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-29 21:17:41,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2296, Unknown=0, NotChecked=0, Total=2450 [2023-11-29 21:17:41,065 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 227 [2023-11-29 21:17:41,081 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) [2023-11-29 21:17:41,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:17:41,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 227 [2023-11-29 21:17:41,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:18:14,746 INFO L124 PetriNetUnfolderBase]: 32300/110064 cut-off events. [2023-11-29 21:18:14,747 INFO L125 PetriNetUnfolderBase]: For 969986/992341 co-relation queries the response was YES. [2023-11-29 21:18:15,645 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. [2023-11-29 21:18:16,172 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 1743 selfloop transitions, 403 changer transitions 356/3034 dead transitions. [2023-11-29 21:18:16,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 3034 transitions, 57618 flow [2023-11-29 21:18:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-29 21:18:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-11-29 21:18:16,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 7292 transitions. [2023-11-29 21:18:16,178 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6555785309718601 [2023-11-29 21:18:16,178 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 7292 transitions. [2023-11-29 21:18:16,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 7292 transitions. [2023-11-29 21:18:16,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:18:16,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 7292 transitions. [2023-11-29 21:18:16,184 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) [2023-11-29 21:18:16,191 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) [2023-11-29 21:18:16,192 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) [2023-11-29 21:18:16,192 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 503 predicate places. [2023-11-29 21:18:16,192 INFO L500 AbstractCegarLoop]: Abstraction has has 712 places, 3034 transitions, 57618 flow [2023-11-29 21:18:16,193 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) [2023-11-29 21:18:16,193 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:18:16,193 INFO L232 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] [2023-11-29 21:18:16,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 21:18:16,401 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 [2023-11-29 21:18:16,402 INFO L425 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:18:16,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:18:16,402 INFO L85 PathProgramCache]: Analyzing trace with hash -923191326, now seen corresponding path program 7 times [2023-11-29 21:18:16,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:18:16,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634247215] [2023-11-29 21:18:16,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:18:16,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:18:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:18:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:18:17,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:18:17,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634247215] [2023-11-29 21:18:17,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634247215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:18:17,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275813530] [2023-11-29 21:18:17,029 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 21:18:17,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:18:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:18:17,030 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) [2023-11-29 21:18:17,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 21:18:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:18:17,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 21:18:17,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:18:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:18:18,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:18:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:18:19,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275813530] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:18:19,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:18:19,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 29, 24] total 62 [2023-11-29 21:18:19,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580157408] [2023-11-29 21:18:19,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:18:19,652 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2023-11-29 21:18:19,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:18:19,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2023-11-29 21:18:19,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=3570, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 21:18:19,658 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 227 [2023-11-29 21:18:19,660 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) [2023-11-29 21:18:19,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:18:19,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 227 [2023-11-29 21:18:19,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:19:11,362 INFO L124 PetriNetUnfolderBase]: 36661/119546 cut-off events. [2023-11-29 21:19:11,362 INFO L125 PetriNetUnfolderBase]: For 1262487/1288670 co-relation queries the response was YES. [2023-11-29 21:19:12,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678930 conditions, 119546 events. 36661/119546 cut-off events. For 1262487/1288670 co-relation queries the response was YES. Maximal size of possible extension queue 1540. Compared 1605281 event pairs, 8095 based on Foata normal form. 807/112658 useless extension candidates. Maximal degree in co-relation 618781. Up to 49774 conditions per place. [2023-11-29 21:19:12,774 INFO L140 encePairwiseOnDemand]: 178/227 looper letters, 2213 selfloop transitions, 534 changer transitions 585/3762 dead transitions. [2023-11-29 21:19:12,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 796 places, 3762 transitions, 75889 flow [2023-11-29 21:19:12,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-29 21:19:12,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2023-11-29 21:19:12,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 10374 transitions. [2023-11-29 21:19:12,780 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.5376522415133455 [2023-11-29 21:19:12,780 INFO L72 ComplementDD]: Start complementDD. Operand 85 states and 10374 transitions. [2023-11-29 21:19:12,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 85 states and 10374 transitions. [2023-11-29 21:19:12,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:19:12,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 85 states and 10374 transitions. [2023-11-29 21:19:12,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 86 states, 85 states have (on average 122.04705882352941) internal successors, (10374), 85 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:19:12,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 86 states, 86 states have (on average 227.0) internal successors, (19522), 86 states have internal predecessors, (19522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:19:12,800 INFO L81 ComplementDD]: Finished complementDD. Result has 86 states, 86 states have (on average 227.0) internal successors, (19522), 86 states have internal predecessors, (19522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:19:12,801 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 587 predicate places. [2023-11-29 21:19:12,801 INFO L500 AbstractCegarLoop]: Abstraction has has 796 places, 3762 transitions, 75889 flow [2023-11-29 21:19:12,802 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-11-29 21:19:12,802 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:19:12,802 INFO L232 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] [2023-11-29 21:19:12,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 21:19:13,008 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 21:19:13,008 INFO L425 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:19:13,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:19:13,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1559157264, now seen corresponding path program 8 times [2023-11-29 21:19:13,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:19:13,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172382856] [2023-11-29 21:19:13,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:19:13,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:19:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:19:13,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:19:13,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:19:13,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172382856] [2023-11-29 21:19:13,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172382856] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:19:13,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340911710] [2023-11-29 21:19:13,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:19:13,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:19:13,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:19:13,599 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:19:13,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 21:19:13,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:19:13,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:19:13,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 21:19:13,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:19:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:19:14,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:19:15,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:19:15,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340911710] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:19:15,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:19:15,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 46 [2023-11-29 21:19:15,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690410514] [2023-11-29 21:19:15,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:19:15,353 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 21:19:15,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:19:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 21:19:15,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 21:19:15,356 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-11-29 21:19:15,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 3762 transitions, 75889 flow. Second operand has 46 states, 46 states have (on average 152.84782608695653) internal successors, (7031), 46 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:19:15,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:19:15,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-11-29 21:19:15,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:20:11,982 INFO L124 PetriNetUnfolderBase]: 42078/136779 cut-off events. [2023-11-29 21:20:11,983 INFO L125 PetriNetUnfolderBase]: For 1674742/1704823 co-relation queries the response was YES. [2023-11-29 21:20:12,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832575 conditions, 136779 events. 42078/136779 cut-off events. For 1674742/1704823 co-relation queries the response was YES. Maximal size of possible extension queue 1774. Compared 1877311 event pairs, 9445 based on Foata normal form. 365/128281 useless extension candidates. Maximal degree in co-relation 758404. Up to 57829 conditions per place. [2023-11-29 21:20:13,746 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 2313 selfloop transitions, 481 changer transitions 683/4292 dead transitions. [2023-11-29 21:20:13,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 850 places, 4292 transitions, 95016 flow [2023-11-29 21:20:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-29 21:20:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-11-29 21:20:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 8692 transitions. [2023-11-29 21:20:13,750 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6961954345214257 [2023-11-29 21:20:13,750 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 8692 transitions. [2023-11-29 21:20:13,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 8692 transitions. [2023-11-29 21:20:13,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:20:13,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 8692 transitions. [2023-11-29 21:20:13,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 158.03636363636363) internal successors, (8692), 55 states have internal predecessors, (8692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:20:13,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 227.0) internal successors, (12712), 56 states have internal predecessors, (12712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:20:13,764 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 227.0) internal successors, (12712), 56 states have internal predecessors, (12712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:20:13,764 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 641 predicate places. [2023-11-29 21:20:13,765 INFO L500 AbstractCegarLoop]: Abstraction has has 850 places, 4292 transitions, 95016 flow [2023-11-29 21:20:13,766 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 152.84782608695653) internal successors, (7031), 46 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:20:13,766 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:20:13,766 INFO L232 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] [2023-11-29 21:20:13,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-29 21:20:13,971 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:20:13,971 INFO L425 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:20:13,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:20:13,972 INFO L85 PathProgramCache]: Analyzing trace with hash 687188668, now seen corresponding path program 9 times [2023-11-29 21:20:13,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:20:13,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673261435] [2023-11-29 21:20:13,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:20:13,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:20:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:20:14,467 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:20:14,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:20:14,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673261435] [2023-11-29 21:20:14,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673261435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:20:14,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910860426] [2023-11-29 21:20:14,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:20:14,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:20:14,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:20:14,469 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:20:14,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 21:20:14,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 21:20:14,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:20:14,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 21:20:14,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:20:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:20:15,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:20:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:20:16,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910860426] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:20:16,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:20:16,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 44 [2023-11-29 21:20:16,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588959460] [2023-11-29 21:20:16,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:20:16,138 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-29 21:20:16,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:20:16,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-29 21:20:16,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1762, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 21:20:16,141 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-11-29 21:20:16,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 4292 transitions, 95016 flow. Second operand has 44 states, 44 states have (on average 152.86363636363637) internal successors, (6726), 44 states have internal predecessors, (6726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:20:16,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:20:16,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-11-29 21:20:16,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:21:21,237 INFO L124 PetriNetUnfolderBase]: 43259/140051 cut-off events. [2023-11-29 21:21:21,237 INFO L125 PetriNetUnfolderBase]: For 1994387/2028574 co-relation queries the response was YES. [2023-11-29 21:21:22,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913281 conditions, 140051 events. 43259/140051 cut-off events. For 1994387/2028574 co-relation queries the response was YES. Maximal size of possible extension queue 1822. Compared 1926445 event pairs, 9616 based on Foata normal form. 437/131473 useless extension candidates. Maximal degree in co-relation 831948. Up to 59729 conditions per place. [2023-11-29 21:21:23,193 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 2446 selfloop transitions, 519 changer transitions 695/4475 dead transitions. [2023-11-29 21:21:23,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 910 places, 4475 transitions, 106603 flow [2023-11-29 21:21:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 21:21:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-29 21:21:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 9536 transitions. [2023-11-29 21:21:23,199 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6886690257817578 [2023-11-29 21:21:23,199 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 9536 transitions. [2023-11-29 21:21:23,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 9536 transitions. [2023-11-29 21:21:23,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:21:23,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 9536 transitions. [2023-11-29 21:21:23,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 156.327868852459) internal successors, (9536), 61 states have internal predecessors, (9536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:23,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 227.0) internal successors, (14074), 62 states have internal predecessors, (14074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:23,218 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 227.0) internal successors, (14074), 62 states have internal predecessors, (14074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:23,218 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 701 predicate places. [2023-11-29 21:21:23,218 INFO L500 AbstractCegarLoop]: Abstraction has has 910 places, 4475 transitions, 106603 flow [2023-11-29 21:21:23,219 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 152.86363636363637) internal successors, (6726), 44 states have internal predecessors, (6726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:23,219 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:21:23,220 INFO L232 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] [2023-11-29 21:21:23,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 21:21:23,425 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:23,426 INFO L425 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:21:23,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:21:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1598224748, now seen corresponding path program 10 times [2023-11-29 21:21:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:21:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796460027] [2023-11-29 21:21:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:21:23,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:21:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:21:23,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:23,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:21:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796460027] [2023-11-29 21:21:23,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796460027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:21:23,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596054340] [2023-11-29 21:21:23,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:21:23,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:21:23,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:21:23,988 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:21:23,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 21:21:24,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:21:24,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:21:24,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 21:21:24,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:21:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:24,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:21:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:21:25,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596054340] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:21:25,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:21:25,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 46 [2023-11-29 21:21:25,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609422139] [2023-11-29 21:21:25,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:21:25,735 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-29 21:21:25,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:21:25,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-29 21:21:25,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1932, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 21:21:25,738 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-11-29 21:21:25,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 4475 transitions, 106603 flow. Second operand has 46 states, 46 states have (on average 152.84782608695653) internal successors, (7031), 46 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:21:25,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:21:25,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-11-29 21:21:25,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:22:47,675 INFO L124 PetriNetUnfolderBase]: 47153/152906 cut-off events. [2023-11-29 21:22:47,675 INFO L125 PetriNetUnfolderBase]: For 2476616/2517234 co-relation queries the response was YES. [2023-11-29 21:22:48,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058513 conditions, 152906 events. 47153/152906 cut-off events. For 2476616/2517234 co-relation queries the response was YES. Maximal size of possible extension queue 2056. Compared 2136872 event pairs, 10758 based on Foata normal form. 520/143546 useless extension candidates. Maximal degree in co-relation 964170. Up to 66204 conditions per place. [2023-11-29 21:22:49,702 INFO L140 encePairwiseOnDemand]: 195/227 looper letters, 2763 selfloop transitions, 471 changer transitions 774/4823 dead transitions. [2023-11-29 21:22:49,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 965 places, 4823 transitions, 124106 flow [2023-11-29 21:22:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-29 21:22:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-11-29 21:22:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 8877 transitions. [2023-11-29 21:22:49,707 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6983165512901196 [2023-11-29 21:22:49,707 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 8877 transitions. [2023-11-29 21:22:49,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 8877 transitions. [2023-11-29 21:22:49,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:22:49,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 8877 transitions. [2023-11-29 21:22:49,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 158.51785714285714) internal successors, (8877), 56 states have internal predecessors, (8877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:49,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 227.0) internal successors, (12939), 57 states have internal predecessors, (12939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:49,843 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 227.0) internal successors, (12939), 57 states have internal predecessors, (12939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:49,843 INFO L307 CegarLoopForPetriNet]: 209 programPoint places, 756 predicate places. [2023-11-29 21:22:49,843 INFO L500 AbstractCegarLoop]: Abstraction has has 965 places, 4823 transitions, 124106 flow [2023-11-29 21:22:49,844 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 152.84782608695653) internal successors, (7031), 46 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:49,844 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:22:49,845 INFO L232 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] [2023-11-29 21:22:49,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 21:22:50,051 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 21:22:50,051 INFO L425 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 21:22:50,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:22:50,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1993073376, now seen corresponding path program 11 times [2023-11-29 21:22:50,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:22:50,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944127668] [2023-11-29 21:22:50,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:22:50,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:22:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:22:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:22:50,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:22:50,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944127668] [2023-11-29 21:22:50,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944127668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:22:50,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494126308] [2023-11-29 21:22:50,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 21:22:50,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:22:50,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:22:50,592 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 21:22:50,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 21:22:50,697 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:22:50,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:22:50,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 21:22:50,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:22:51,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:22:51,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:22:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:22:52,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494126308] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:22:52,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:22:52,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2023-11-29 21:22:52,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722588465] [2023-11-29 21:22:52,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:22:52,176 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 21:22:52,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:22:52,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 21:22:52,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1680, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 21:22:52,180 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 227 [2023-11-29 21:22:52,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 965 places, 4823 transitions, 124106 flow. Second operand has 43 states, 43 states have (on average 152.8139534883721) internal successors, (6571), 43 states have internal predecessors, (6571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 21:22:52,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:22:52,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 227 [2023-11-29 21:22:52,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand