/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/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 21:35:41,427 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 21:35:41,460 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 21:35:41,475 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 21:35:41,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 21:35:41,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 21:35:41,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 21:35:41,476 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 21:35:41,477 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 21:35:41,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 21:35:41,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 21:35:41,477 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 21:35:41,477 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 21:35:41,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 21:35:41,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 21:35:41,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 21:35:41,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 21:35:41,479 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 21:35:41,479 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 21:35:41,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 21:35:41,479 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 21:35:41,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 21:35:41,480 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 21:35:41,480 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 21:35:41,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 21:35:41,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:35:41,481 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 21:35:41,481 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 21:35:41,481 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 21:35:41,481 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 21:35:41,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 21:35:41,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 21:35:41,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 21:35:41,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 21:35:41,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 21:35:41,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 21:35:41,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 21:35:41,689 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 21:35:41,690 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 21:35:41,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-11-29 21:35:42,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 21:35:42,827 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 21:35:42,827 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-11-29 21:35:42,832 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b49969d6f/ce09c10f63d14d84a3fa4555c1c4e59c/FLAG6b9a900bd [2023-11-29 21:35:43,239 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b49969d6f/ce09c10f63d14d84a3fa4555c1c4e59c [2023-11-29 21:35:43,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 21:35:43,242 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 21:35:43,242 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 21:35:43,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 21:35:43,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 21:35:43,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@449235cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43, skipping insertion in model container [2023-11-29 21:35:43,247 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,267 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 21:35:43,365 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/parallel-misc-2.wvr.c[2580,2593] [2023-11-29 21:35:43,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:35:43,374 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 21:35:43,387 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/parallel-misc-2.wvr.c[2580,2593] [2023-11-29 21:35:43,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 21:35:43,392 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 21:35:43,392 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 21:35:43,397 INFO L206 MainTranslator]: Completed translation [2023-11-29 21:35:43,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43 WrapperNode [2023-11-29 21:35:43,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 21:35:43,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 21:35:43,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 21:35:43,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 21:35:43,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,408 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,419 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-11-29 21:35:43,420 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 21:35:43,420 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 21:35:43,420 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 21:35:43,420 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 21:35:43,425 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,427 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,428 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,431 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,434 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 21:35:43,437 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 21:35:43,437 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 21:35:43,437 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 21:35:43,437 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (1/1) ... [2023-11-29 21:35:43,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 21:35:43,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:35:43,459 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 21:35:43,468 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 21:35:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 21:35:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 21:35:43,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 21:35:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 21:35:43,483 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 21:35:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 21:35:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 21:35:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 21:35:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-29 21:35:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-29 21:35:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 21:35:43,483 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 21:35:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 21:35:43,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 21:35:43,484 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 21:35:43,543 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 21:35:43,545 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 21:35:43,741 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 21:35:43,761 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 21:35:43,761 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 21:35:43,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:35:43 BoogieIcfgContainer [2023-11-29 21:35:43,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 21:35:43,764 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 21:35:43,764 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 21:35:43,766 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 21:35:43,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 09:35:43" (1/3) ... [2023-11-29 21:35:43,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f7d22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:35:43, skipping insertion in model container [2023-11-29 21:35:43,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 09:35:43" (2/3) ... [2023-11-29 21:35:43,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f7d22f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 09:35:43, skipping insertion in model container [2023-11-29 21:35:43,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 09:35:43" (3/3) ... [2023-11-29 21:35:43,768 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2023-11-29 21:35:43,780 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 21:35:43,781 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 21:35:43,781 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 21:35:43,846 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 21:35:43,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 108 transitions, 230 flow [2023-11-29 21:35:43,912 INFO L124 PetriNetUnfolderBase]: 8/106 cut-off events. [2023-11-29 21:35:43,912 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 21:35:43,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 8/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-29 21:35:43,916 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 108 transitions, 230 flow [2023-11-29 21:35:43,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 97 transitions, 206 flow [2023-11-29 21:35:43,925 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 21:35:43,929 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;@485d6741, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 21:35:43,930 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 21:35:43,946 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 21:35:43,947 INFO L124 PetriNetUnfolderBase]: 8/96 cut-off events. [2023-11-29 21:35:43,947 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 21:35:43,947 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:43,948 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] [2023-11-29 21:35:43,948 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 21:35:43,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:43,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1195650573, now seen corresponding path program 1 times [2023-11-29 21:35:43,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:43,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93224551] [2023-11-29 21:35:43,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:43,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:44,707 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 21:35:44,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:44,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93224551] [2023-11-29 21:35:44,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93224551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:35:44,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:35:44,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 21:35:44,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959574750] [2023-11-29 21:35:44,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:35:44,717 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 21:35:44,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:44,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 21:35:44,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 21:35:44,747 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-11-29 21:35:44,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 97 transitions, 206 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 21:35:44,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:44,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-11-29 21:35:44,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:44,933 INFO L124 PetriNetUnfolderBase]: 25/170 cut-off events. [2023-11-29 21:35:44,933 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-29 21:35:44,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 170 events. 25/170 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 356 event pairs, 0 based on Foata normal form. 16/167 useless extension candidates. Maximal degree in co-relation 117. Up to 40 conditions per place. [2023-11-29 21:35:44,936 INFO L140 encePairwiseOnDemand]: 90/108 looper letters, 19 selfloop transitions, 9 changer transitions 7/104 dead transitions. [2023-11-29 21:35:44,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 104 transitions, 299 flow [2023-11-29 21:35:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 21:35:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 21:35:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 754 transitions. [2023-11-29 21:35:44,952 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7757201646090535 [2023-11-29 21:35:44,953 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 754 transitions. [2023-11-29 21:35:44,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 754 transitions. [2023-11-29 21:35:44,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:44,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 754 transitions. [2023-11-29 21:35:44,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 83.77777777777777) internal successors, (754), 9 states have internal predecessors, (754), 0 states have call successors, (0), 0 states 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 21:35:44,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states 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 21:35:44,968 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states 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 21:35:44,974 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 8 predicate places. [2023-11-29 21:35:44,974 INFO L500 AbstractCegarLoop]: Abstraction has has 104 places, 104 transitions, 299 flow [2023-11-29 21:35:44,974 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states 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 21:35:44,974 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:44,975 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] [2023-11-29 21:35:44,975 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 21:35:44,976 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 21:35:44,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:44,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1312965913, now seen corresponding path program 1 times [2023-11-29 21:35:44,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:44,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466985291] [2023-11-29 21:35:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:44,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:45,229 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 21:35:45,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466985291] [2023-11-29 21:35:45,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466985291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:35:45,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:35:45,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 21:35:45,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880307693] [2023-11-29 21:35:45,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:35:45,232 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 21:35:45,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 21:35:45,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 21:35:45,234 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 108 [2023-11-29 21:35:45,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 104 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 21:35:45,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:45,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 108 [2023-11-29 21:35:45,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:45,422 INFO L124 PetriNetUnfolderBase]: 106/366 cut-off events. [2023-11-29 21:35:45,423 INFO L125 PetriNetUnfolderBase]: For 150/154 co-relation queries the response was YES. [2023-11-29 21:35:45,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 690 conditions, 366 events. 106/366 cut-off events. For 150/154 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1634 event pairs, 12 based on Foata normal form. 1/311 useless extension candidates. Maximal degree in co-relation 467. Up to 82 conditions per place. [2023-11-29 21:35:45,425 INFO L140 encePairwiseOnDemand]: 95/108 looper letters, 47 selfloop transitions, 14 changer transitions 9/131 dead transitions. [2023-11-29 21:35:45,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 131 transitions, 521 flow [2023-11-29 21:35:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 21:35:45,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 21:35:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 619 transitions. [2023-11-29 21:35:45,427 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7164351851851852 [2023-11-29 21:35:45,427 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 619 transitions. [2023-11-29 21:35:45,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 619 transitions. [2023-11-29 21:35:45,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:45,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 619 transitions. [2023-11-29 21:35:45,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.375) internal successors, (619), 8 states have internal predecessors, (619), 0 states have call successors, (0), 0 states 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 21:35:45,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:35:45,446 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:35:45,446 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 15 predicate places. [2023-11-29 21:35:45,446 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 131 transitions, 521 flow [2023-11-29 21:35:45,446 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 21:35:45,447 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:45,447 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] [2023-11-29 21:35:45,447 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 21:35:45,447 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 21:35:45,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:45,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1677737137, now seen corresponding path program 1 times [2023-11-29 21:35:45,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:45,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622935582] [2023-11-29 21:35:45,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:45,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:45,588 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 21:35:45,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622935582] [2023-11-29 21:35:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622935582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:35:45,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:35:45,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 21:35:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104984924] [2023-11-29 21:35:45,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:35:45,589 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 21:35:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 21:35:45,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 21:35:45,590 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 108 [2023-11-29 21:35:45,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 521 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 21:35:45,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:45,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 108 [2023-11-29 21:35:45,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:45,715 INFO L124 PetriNetUnfolderBase]: 111/417 cut-off events. [2023-11-29 21:35:45,716 INFO L125 PetriNetUnfolderBase]: For 344/384 co-relation queries the response was YES. [2023-11-29 21:35:45,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 417 events. 111/417 cut-off events. For 344/384 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2012 event pairs, 6 based on Foata normal form. 9/373 useless extension candidates. Maximal degree in co-relation 642. Up to 93 conditions per place. [2023-11-29 21:35:45,719 INFO L140 encePairwiseOnDemand]: 96/108 looper letters, 76 selfloop transitions, 17 changer transitions 11/165 dead transitions. [2023-11-29 21:35:45,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 165 transitions, 923 flow [2023-11-29 21:35:45,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 21:35:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 21:35:45,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 625 transitions. [2023-11-29 21:35:45,720 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7233796296296297 [2023-11-29 21:35:45,720 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 625 transitions. [2023-11-29 21:35:45,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 625 transitions. [2023-11-29 21:35:45,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:45,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 625 transitions. [2023-11-29 21:35:45,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 78.125) internal successors, (625), 8 states have internal predecessors, (625), 0 states have call successors, (0), 0 states 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 21:35:45,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:35:45,723 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:35:45,724 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 22 predicate places. [2023-11-29 21:35:45,724 INFO L500 AbstractCegarLoop]: Abstraction has has 118 places, 165 transitions, 923 flow [2023-11-29 21:35:45,724 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 21:35:45,724 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:45,724 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] [2023-11-29 21:35:45,724 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 21:35:45,725 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 21:35:45,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:45,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1363993443, now seen corresponding path program 2 times [2023-11-29 21:35:45,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:45,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000990666] [2023-11-29 21:35:45,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:45,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:45,859 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 21:35:45,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:45,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000990666] [2023-11-29 21:35:45,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000990666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:35:45,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:35:45,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 21:35:45,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819247937] [2023-11-29 21:35:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:35:45,863 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 21:35:45,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:45,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 21:35:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 21:35:45,866 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 108 [2023-11-29 21:35:45,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 165 transitions, 923 flow. Second operand has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 21:35:45,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:45,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 108 [2023-11-29 21:35:45,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:45,989 INFO L124 PetriNetUnfolderBase]: 105/400 cut-off events. [2023-11-29 21:35:45,989 INFO L125 PetriNetUnfolderBase]: For 595/651 co-relation queries the response was YES. [2023-11-29 21:35:45,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 400 events. 105/400 cut-off events. For 595/651 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1884 event pairs, 6 based on Foata normal form. 6/361 useless extension candidates. Maximal degree in co-relation 730. Up to 96 conditions per place. [2023-11-29 21:35:45,993 INFO L140 encePairwiseOnDemand]: 96/108 looper letters, 80 selfloop transitions, 22 changer transitions 11/174 dead transitions. [2023-11-29 21:35:45,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 174 transitions, 1213 flow [2023-11-29 21:35:45,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 21:35:45,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 21:35:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 617 transitions. [2023-11-29 21:35:45,995 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7141203703703703 [2023-11-29 21:35:45,995 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 617 transitions. [2023-11-29 21:35:45,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 617 transitions. [2023-11-29 21:35:45,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:45,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 617 transitions. [2023-11-29 21:35:45,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.125) internal successors, (617), 8 states have internal predecessors, (617), 0 states have call successors, (0), 0 states 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 21:35:45,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:35:45,999 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:35:46,000 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 29 predicate places. [2023-11-29 21:35:46,000 INFO L500 AbstractCegarLoop]: Abstraction has has 125 places, 174 transitions, 1213 flow [2023-11-29 21:35:46,000 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.66666666666667) internal successors, (442), 6 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 21:35:46,000 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:46,000 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] [2023-11-29 21:35:46,000 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 21:35:46,001 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 21:35:46,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:46,001 INFO L85 PathProgramCache]: Analyzing trace with hash -572931995, now seen corresponding path program 2 times [2023-11-29 21:35:46,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:46,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885683204] [2023-11-29 21:35:46,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:46,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:46,209 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 21:35:46,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:46,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885683204] [2023-11-29 21:35:46,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885683204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:35:46,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:35:46,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 21:35:46,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162210082] [2023-11-29 21:35:46,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:35:46,211 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 21:35:46,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:46,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 21:35:46,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 21:35:46,212 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 108 [2023-11-29 21:35:46,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 174 transitions, 1213 flow. Second operand has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 21:35:46,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:46,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 108 [2023-11-29 21:35:46,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:46,347 INFO L124 PetriNetUnfolderBase]: 93/360 cut-off events. [2023-11-29 21:35:46,347 INFO L125 PetriNetUnfolderBase]: For 831/927 co-relation queries the response was YES. [2023-11-29 21:35:46,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 360 events. 93/360 cut-off events. For 831/927 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1541 event pairs, 6 based on Foata normal form. 10/331 useless extension candidates. Maximal degree in co-relation 851. Up to 98 conditions per place. [2023-11-29 21:35:46,349 INFO L140 encePairwiseOnDemand]: 94/108 looper letters, 75 selfloop transitions, 16 changer transitions 13/165 dead transitions. [2023-11-29 21:35:46,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 165 transitions, 1318 flow [2023-11-29 21:35:46,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 21:35:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 21:35:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 618 transitions. [2023-11-29 21:35:46,351 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7152777777777778 [2023-11-29 21:35:46,351 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 618 transitions. [2023-11-29 21:35:46,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 618 transitions. [2023-11-29 21:35:46,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:46,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 618 transitions. [2023-11-29 21:35:46,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.25) internal successors, (618), 8 states have internal predecessors, (618), 0 states have call successors, (0), 0 states 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 21:35:46,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:35:46,355 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 0 states have call successors, (0), 0 states 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 21:35:46,356 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 36 predicate places. [2023-11-29 21:35:46,356 INFO L500 AbstractCegarLoop]: Abstraction has has 132 places, 165 transitions, 1318 flow [2023-11-29 21:35:46,356 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.5) internal successors, (441), 6 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 21:35:46,356 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:46,357 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] [2023-11-29 21:35:46,357 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 21:35:46,357 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 21:35:46,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:46,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1358854719, now seen corresponding path program 1 times [2023-11-29 21:35:46,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:46,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439351193] [2023-11-29 21:35:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:46,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:46,649 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 21:35:46,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439351193] [2023-11-29 21:35:46,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439351193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:35:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628226402] [2023-11-29 21:35:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:46,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:35:46,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:35:46,656 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 21:35:46,684 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 21:35:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:46,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 21:35:46,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:35:47,038 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 21:35:47,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:35:47,249 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 21:35:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628226402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:35:47,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:35:47,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-11-29 21:35:47,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672116443] [2023-11-29 21:35:47,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:35:47,250 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 21:35:47,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:47,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 21:35:47,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-29 21:35:47,252 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 108 [2023-11-29 21:35:47,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 165 transitions, 1318 flow. Second operand has 18 states, 18 states have (on average 71.44444444444444) internal successors, (1286), 18 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states 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 21:35:47,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:47,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 108 [2023-11-29 21:35:47,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:47,772 INFO L124 PetriNetUnfolderBase]: 175/551 cut-off events. [2023-11-29 21:35:47,772 INFO L125 PetriNetUnfolderBase]: For 1776/1882 co-relation queries the response was YES. [2023-11-29 21:35:47,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 551 events. 175/551 cut-off events. For 1776/1882 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2707 event pairs, 11 based on Foata normal form. 10/504 useless extension candidates. Maximal degree in co-relation 1600. Up to 209 conditions per place. [2023-11-29 21:35:47,777 INFO L140 encePairwiseOnDemand]: 89/108 looper letters, 122 selfloop transitions, 40 changer transitions 13/235 dead transitions. [2023-11-29 21:35:47,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 235 transitions, 2426 flow [2023-11-29 21:35:47,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 21:35:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-29 21:35:47,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1473 transitions. [2023-11-29 21:35:47,780 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6819444444444445 [2023-11-29 21:35:47,780 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1473 transitions. [2023-11-29 21:35:47,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1473 transitions. [2023-11-29 21:35:47,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:47,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1473 transitions. [2023-11-29 21:35:47,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 73.65) internal successors, (1473), 20 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states 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 21:35:47,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 108.0) internal successors, (2268), 21 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states 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 21:35:47,786 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 108.0) internal successors, (2268), 21 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states 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 21:35:47,788 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 55 predicate places. [2023-11-29 21:35:47,788 INFO L500 AbstractCegarLoop]: Abstraction has has 151 places, 235 transitions, 2426 flow [2023-11-29 21:35:47,789 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 71.44444444444444) internal successors, (1286), 18 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states 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 21:35:47,789 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:47,789 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:47,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 21:35:47,993 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 21:35:47,993 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 21:35:47,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:47,993 INFO L85 PathProgramCache]: Analyzing trace with hash -42738173, now seen corresponding path program 2 times [2023-11-29 21:35:47,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:47,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968001273] [2023-11-29 21:35:47,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:47,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:48,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:35:48,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:48,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968001273] [2023-11-29 21:35:48,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968001273] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:35:48,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:35:48,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 21:35:48,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346981413] [2023-11-29 21:35:48,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:35:48,109 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 21:35:48,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:48,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 21:35:48,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 21:35:48,111 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 108 [2023-11-29 21:35:48,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 235 transitions, 2426 flow. Second operand has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 21:35:48,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:48,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 108 [2023-11-29 21:35:48,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:48,239 INFO L124 PetriNetUnfolderBase]: 432/1168 cut-off events. [2023-11-29 21:35:48,239 INFO L125 PetriNetUnfolderBase]: For 6837/7007 co-relation queries the response was YES. [2023-11-29 21:35:48,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5701 conditions, 1168 events. 432/1168 cut-off events. For 6837/7007 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7787 event pairs, 27 based on Foata normal form. 0/1045 useless extension candidates. Maximal degree in co-relation 4607. Up to 549 conditions per place. [2023-11-29 21:35:48,248 INFO L140 encePairwiseOnDemand]: 103/108 looper letters, 121 selfloop transitions, 5 changer transitions 13/307 dead transitions. [2023-11-29 21:35:48,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 307 transitions, 3722 flow [2023-11-29 21:35:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 21:35:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 21:35:48,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 393 transitions. [2023-11-29 21:35:48,250 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9097222222222222 [2023-11-29 21:35:48,250 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 393 transitions. [2023-11-29 21:35:48,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 393 transitions. [2023-11-29 21:35:48,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:48,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 393 transitions. [2023-11-29 21:35:48,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.25) internal successors, (393), 4 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 21:35:48,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 21:35:48,252 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 21:35:48,253 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 58 predicate places. [2023-11-29 21:35:48,253 INFO L500 AbstractCegarLoop]: Abstraction has has 154 places, 307 transitions, 3722 flow [2023-11-29 21:35:48,253 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 21:35:48,253 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:48,253 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:48,253 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 21:35:48,253 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 21:35:48,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:48,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1112948675, now seen corresponding path program 1 times [2023-11-29 21:35:48,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:48,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430848559] [2023-11-29 21:35:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:48,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:35:48,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:48,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430848559] [2023-11-29 21:35:48,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430848559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:35:48,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139655555] [2023-11-29 21:35:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:48,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:35:48,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:35:48,669 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 21:35:48,701 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 21:35:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:48,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 21:35:48,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:35:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 21:35:48,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:35:49,184 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 21:35:49,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139655555] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:35:49,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:35:49,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2023-11-29 21:35:49,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446391414] [2023-11-29 21:35:49,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:35:49,188 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 21:35:49,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:49,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 21:35:49,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2023-11-29 21:35:49,190 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 108 [2023-11-29 21:35:49,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 307 transitions, 3722 flow. Second operand has 22 states, 22 states have (on average 70.13636363636364) internal successors, (1543), 22 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states 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 21:35:49,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:49,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 108 [2023-11-29 21:35:49,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:50,014 INFO L124 PetriNetUnfolderBase]: 842/2085 cut-off events. [2023-11-29 21:35:50,015 INFO L125 PetriNetUnfolderBase]: For 13850/14200 co-relation queries the response was YES. [2023-11-29 21:35:50,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11431 conditions, 2085 events. 842/2085 cut-off events. For 13850/14200 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 14649 event pairs, 52 based on Foata normal form. 18/1919 useless extension candidates. Maximal degree in co-relation 10700. Up to 1036 conditions per place. [2023-11-29 21:35:50,032 INFO L140 encePairwiseOnDemand]: 87/108 looper letters, 351 selfloop transitions, 61 changer transitions 13/488 dead transitions. [2023-11-29 21:35:50,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 488 transitions, 6992 flow [2023-11-29 21:35:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 21:35:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-29 21:35:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1514 transitions. [2023-11-29 21:35:50,035 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6675485008818343 [2023-11-29 21:35:50,035 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1514 transitions. [2023-11-29 21:35:50,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1514 transitions. [2023-11-29 21:35:50,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:50,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1514 transitions. [2023-11-29 21:35:50,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 72.0952380952381) internal successors, (1514), 21 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states 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 21:35:50,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 108.0) internal successors, (2376), 22 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 21:35:50,040 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 108.0) internal successors, (2376), 22 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states 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 21:35:50,041 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 78 predicate places. [2023-11-29 21:35:50,041 INFO L500 AbstractCegarLoop]: Abstraction has has 174 places, 488 transitions, 6992 flow [2023-11-29 21:35:50,041 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 70.13636363636364) internal successors, (1543), 22 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states 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 21:35:50,041 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:50,042 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:50,050 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 21:35:50,246 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,SelfDestructingSolverStorable7 [2023-11-29 21:35:50,247 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 21:35:50,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash -347487183, now seen corresponding path program 2 times [2023-11-29 21:35:50,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:50,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515843900] [2023-11-29 21:35:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:50,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 21:35:50,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:50,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515843900] [2023-11-29 21:35:50,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515843900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:35:50,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:35:50,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 21:35:50,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359867954] [2023-11-29 21:35:50,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:35:50,362 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 21:35:50,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:50,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 21:35:50,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 21:35:50,364 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 108 [2023-11-29 21:35:50,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 488 transitions, 6992 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 21:35:50,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:50,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 108 [2023-11-29 21:35:50,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:51,003 INFO L124 PetriNetUnfolderBase]: 1788/4778 cut-off events. [2023-11-29 21:35:51,003 INFO L125 PetriNetUnfolderBase]: For 45225/46751 co-relation queries the response was YES. [2023-11-29 21:35:51,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26347 conditions, 4778 events. 1788/4778 cut-off events. For 45225/46751 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 44631 event pairs, 161 based on Foata normal form. 287/4628 useless extension candidates. Maximal degree in co-relation 24568. Up to 2358 conditions per place. [2023-11-29 21:35:51,044 INFO L140 encePairwiseOnDemand]: 103/108 looper letters, 351 selfloop transitions, 5 changer transitions 13/638 dead transitions. [2023-11-29 21:35:51,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 638 transitions, 10640 flow [2023-11-29 21:35:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 21:35:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 21:35:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2023-11-29 21:35:51,046 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2023-11-29 21:35:51,046 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2023-11-29 21:35:51,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2023-11-29 21:35:51,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:51,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2023-11-29 21:35:51,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 21:35:51,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 21:35:51,048 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 21:35:51,049 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 81 predicate places. [2023-11-29 21:35:51,049 INFO L500 AbstractCegarLoop]: Abstraction has has 177 places, 638 transitions, 10640 flow [2023-11-29 21:35:51,049 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 21:35:51,049 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:51,049 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:51,049 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 21:35:51,049 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 21:35:51,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:51,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1642448049, now seen corresponding path program 1 times [2023-11-29 21:35:51,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:51,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362899759] [2023-11-29 21:35:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:51,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:51,160 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-29 21:35:51,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:51,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362899759] [2023-11-29 21:35:51,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362899759] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:35:51,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:35:51,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 21:35:51,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323900969] [2023-11-29 21:35:51,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:35:51,161 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 21:35:51,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:51,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 21:35:51,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 21:35:51,162 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 108 [2023-11-29 21:35:51,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 638 transitions, 10640 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 21:35:51,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:51,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 108 [2023-11-29 21:35:51,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:51,702 INFO L124 PetriNetUnfolderBase]: 1341/3621 cut-off events. [2023-11-29 21:35:51,702 INFO L125 PetriNetUnfolderBase]: For 34731/35931 co-relation queries the response was YES. [2023-11-29 21:35:51,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21369 conditions, 3621 events. 1341/3621 cut-off events. For 34731/35931 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 32105 event pairs, 80 based on Foata normal form. 40/3407 useless extension candidates. Maximal degree in co-relation 16429. Up to 1842 conditions per place. [2023-11-29 21:35:51,731 INFO L140 encePairwiseOnDemand]: 104/108 looper letters, 350 selfloop transitions, 7 changer transitions 13/639 dead transitions. [2023-11-29 21:35:51,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 639 transitions, 11350 flow [2023-11-29 21:35:51,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 21:35:51,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 21:35:51,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 392 transitions. [2023-11-29 21:35:51,732 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9074074074074074 [2023-11-29 21:35:51,733 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 392 transitions. [2023-11-29 21:35:51,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 392 transitions. [2023-11-29 21:35:51,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:51,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 392 transitions. [2023-11-29 21:35:51,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.0) internal successors, (392), 4 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 21:35:51,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 21:35:51,735 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 21:35:51,736 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 84 predicate places. [2023-11-29 21:35:51,736 INFO L500 AbstractCegarLoop]: Abstraction has has 180 places, 639 transitions, 11350 flow [2023-11-29 21:35:51,736 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 21:35:51,736 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:51,736 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:51,736 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 21:35:51,739 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 21:35:51,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:51,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1043637133, now seen corresponding path program 1 times [2023-11-29 21:35:51,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:51,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309486074] [2023-11-29 21:35:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:51,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:35:52,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:52,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309486074] [2023-11-29 21:35:52,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309486074] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:35:52,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503103652] [2023-11-29 21:35:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:52,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:35:52,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:35:52,018 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 21:35:52,049 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 21:35:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:52,086 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 21:35:52,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:35:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:35:52,237 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:35:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:35:52,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503103652] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:35:52,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:35:52,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-11-29 21:35:52,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666184876] [2023-11-29 21:35:52,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:35:52,348 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 21:35:52,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:52,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 21:35:52,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 21:35:52,349 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-11-29 21:35:52,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 639 transitions, 11350 flow. Second operand has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 21:35:52,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:52,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-11-29 21:35:52,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:53,611 INFO L124 PetriNetUnfolderBase]: 3048/8426 cut-off events. [2023-11-29 21:35:53,611 INFO L125 PetriNetUnfolderBase]: For 97709/100386 co-relation queries the response was YES. [2023-11-29 21:35:53,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50471 conditions, 8426 events. 3048/8426 cut-off events. For 97709/100386 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 84826 event pairs, 216 based on Foata normal form. 84/7913 useless extension candidates. Maximal degree in co-relation 40731. Up to 4219 conditions per place. [2023-11-29 21:35:53,778 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 619 selfloop transitions, 235 changer transitions 25/1142 dead transitions. [2023-11-29 21:35:53,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 1142 transitions, 24787 flow [2023-11-29 21:35:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 21:35:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 21:35:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1249 transitions. [2023-11-29 21:35:53,781 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7709876543209877 [2023-11-29 21:35:53,781 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1249 transitions. [2023-11-29 21:35:53,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1249 transitions. [2023-11-29 21:35:53,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:53,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1249 transitions. [2023-11-29 21:35:53,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 83.26666666666667) internal successors, (1249), 15 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 21:35:53,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 21:35:53,800 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 21:35:53,801 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 98 predicate places. [2023-11-29 21:35:53,801 INFO L500 AbstractCegarLoop]: Abstraction has has 194 places, 1142 transitions, 24787 flow [2023-11-29 21:35:53,801 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 21:35:53,801 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:53,801 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:53,819 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 21:35:54,006 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:35:54,006 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 21:35:54,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:54,006 INFO L85 PathProgramCache]: Analyzing trace with hash -265986315, now seen corresponding path program 2 times [2023-11-29 21:35:54,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:54,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261563206] [2023-11-29 21:35:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:54,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:54,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:35:54,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:54,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261563206] [2023-11-29 21:35:54,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261563206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:35:54,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343200971] [2023-11-29 21:35:54,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:35:54,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:35:54,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:35:54,288 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 21:35:54,322 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 21:35:54,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:35:54,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:35:54,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 21:35:54,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:35:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:35:54,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:35:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:35:54,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343200971] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:35:54,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:35:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-11-29 21:35:54,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989544947] [2023-11-29 21:35:54,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:35:54,603 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 21:35:54,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:54,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 21:35:54,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 21:35:54,604 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-11-29 21:35:54,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 1142 transitions, 24787 flow. Second operand has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states 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 21:35:54,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:54,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-11-29 21:35:54,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:35:55,924 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([263] L44-->L51: Formula: (= v_~pos~0_25 (+ v_~pos~0_26 1)) InVars {~pos~0=v_~pos~0_26} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_25} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][333], [1134#(< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))), 162#true, 110#true, 145#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 6#L94-4true, thread2Thread1of1ForFork0InUse, 1352#(= (* (div ~d2~0 256) 256) ~d2~0), thread1Thread1of1ForFork1InUse, 1983#true, 1355#true, 156#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), 1347#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), 732#true, 180#(and (= (* (div ~i2~0 4294967296) 4294967296) ~i2~0) (<= (+ (* (div ~N~0 2147483648) 2147483648) 1) ~N~0)), 21#L51true, 126#true, 68#L70true]) [2023-11-29 21:35:55,925 INFO L294 olderBase$Statistics]: this new event has 86 ancestors and is cut-off event [2023-11-29 21:35:55,925 INFO L297 olderBase$Statistics]: existing Event has 79 ancestors and is cut-off event [2023-11-29 21:35:55,925 INFO L297 olderBase$Statistics]: existing Event has 72 ancestors and is cut-off event [2023-11-29 21:35:55,925 INFO L297 olderBase$Statistics]: existing Event has 72 ancestors and is cut-off event [2023-11-29 21:35:55,981 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([263] L44-->L51: Formula: (= v_~pos~0_25 (+ v_~pos~0_26 1)) InVars {~pos~0=v_~pos~0_26} OutVars{thread1Thread1of1ForFork1_#t~post1=|v_thread1Thread1of1ForFork1_#t~post1_1|, ~pos~0=v_~pos~0_25} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post1, ~pos~0][336], [1134#(< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))), 162#true, 110#true, 1353#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), 145#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 6#L94-4true, thread2Thread1of1ForFork0InUse, thread1Thread1of1ForFork1InUse, 1983#true, 1355#true, 51#L73true, 156#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), 732#true, 1347#(not (= (* 256 (div ~d1~0 256)) ~d1~0)), 180#(and (= (* (div ~i2~0 4294967296) 4294967296) ~i2~0) (<= (+ (* (div ~N~0 2147483648) 2147483648) 1) ~N~0)), 21#L51true, 126#true]) [2023-11-29 21:35:55,981 INFO L294 olderBase$Statistics]: this new event has 87 ancestors and is cut-off event [2023-11-29 21:35:55,981 INFO L297 olderBase$Statistics]: existing Event has 73 ancestors and is cut-off event [2023-11-29 21:35:55,981 INFO L297 olderBase$Statistics]: existing Event has 80 ancestors and is cut-off event [2023-11-29 21:35:55,981 INFO L297 olderBase$Statistics]: existing Event has 73 ancestors and is cut-off event [2023-11-29 21:35:57,248 INFO L124 PetriNetUnfolderBase]: 4632/13134 cut-off events. [2023-11-29 21:35:57,248 INFO L125 PetriNetUnfolderBase]: For 176007/179746 co-relation queries the response was YES. [2023-11-29 21:35:57,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80825 conditions, 13134 events. 4632/13134 cut-off events. For 176007/179746 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 142605 event pairs, 368 based on Foata normal form. 351/12555 useless extension candidates. Maximal degree in co-relation 75610. Up to 6490 conditions per place. [2023-11-29 21:35:57,369 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 911 selfloop transitions, 433 changer transitions 34/1641 dead transitions. [2023-11-29 21:35:57,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 1641 transitions, 40117 flow [2023-11-29 21:35:57,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 21:35:57,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 21:35:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1421 transitions. [2023-11-29 21:35:57,371 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7739651416122004 [2023-11-29 21:35:57,372 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1421 transitions. [2023-11-29 21:35:57,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1421 transitions. [2023-11-29 21:35:57,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:35:57,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1421 transitions. [2023-11-29 21:35:57,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.58823529411765) internal successors, (1421), 17 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states 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 21:35:57,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 21:35:57,376 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 21:35:57,377 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 114 predicate places. [2023-11-29 21:35:57,377 INFO L500 AbstractCegarLoop]: Abstraction has has 210 places, 1641 transitions, 40117 flow [2023-11-29 21:35:57,377 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states 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 21:35:57,377 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:35:57,377 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:35:57,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 21:35:57,581 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:35:57,582 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 21:35:57,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:35:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1118307179, now seen corresponding path program 3 times [2023-11-29 21:35:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:35:57,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87218929] [2023-11-29 21:35:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:35:57,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:35:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:35:57,971 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:35:57,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:35:57,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87218929] [2023-11-29 21:35:57,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87218929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:35:57,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710685579] [2023-11-29 21:35:57,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:35:57,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:35:57,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:35:57,973 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 21:35:58,002 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 21:35:58,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 21:35:58,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:35:58,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 21:35:58,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:35:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:35:58,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:35:58,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:35:58,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710685579] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:35:58,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:35:58,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-11-29 21:35:58,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861226527] [2023-11-29 21:35:58,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:35:58,370 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 21:35:58,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:35:58,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 21:35:58,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 21:35:58,372 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-11-29 21:35:58,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 1641 transitions, 40117 flow. Second operand has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 21:35:58,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:35:58,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-11-29 21:35:58,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:36:01,780 INFO L124 PetriNetUnfolderBase]: 4940/14133 cut-off events. [2023-11-29 21:36:01,780 INFO L125 PetriNetUnfolderBase]: For 218651/222725 co-relation queries the response was YES. [2023-11-29 21:36:01,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89894 conditions, 14133 events. 4940/14133 cut-off events. For 218651/222725 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 156508 event pairs, 403 based on Foata normal form. 231/13357 useless extension candidates. Maximal degree in co-relation 83202. Up to 6954 conditions per place. [2023-11-29 21:36:01,899 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 1344 selfloop transitions, 112 changer transitions 42/1761 dead transitions. [2023-11-29 21:36:01,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 1761 transitions, 46153 flow [2023-11-29 21:36:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 21:36:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 21:36:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1247 transitions. [2023-11-29 21:36:01,901 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.769753086419753 [2023-11-29 21:36:01,901 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1247 transitions. [2023-11-29 21:36:01,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1247 transitions. [2023-11-29 21:36:01,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:36:01,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1247 transitions. [2023-11-29 21:36:01,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 83.13333333333334) internal successors, (1247), 15 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 21:36:01,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 21:36:01,907 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 21:36:01,908 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 128 predicate places. [2023-11-29 21:36:01,908 INFO L500 AbstractCegarLoop]: Abstraction has has 224 places, 1761 transitions, 46153 flow [2023-11-29 21:36:01,908 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 21:36:01,908 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:36:01,908 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:01,912 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 21:36:02,112 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,SelfDestructingSolverStorable12 [2023-11-29 21:36:02,113 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 21:36:02,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:36:02,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1914016299, now seen corresponding path program 4 times [2023-11-29 21:36:02,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:36:02,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199321896] [2023-11-29 21:36:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:36:02,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:36:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:36:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:36:02,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:36:02,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199321896] [2023-11-29 21:36:02,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199321896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:36:02,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814751698] [2023-11-29 21:36:02,354 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:36:02,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:36:02,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:36:02,355 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 21:36:02,398 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 21:36:02,437 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:36:02,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:36:02,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 21:36:02,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:36:02,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:36:02,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:36:02,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:36:02,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814751698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:36:02,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:36:02,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-11-29 21:36:02,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756963506] [2023-11-29 21:36:02,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:36:02,846 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 21:36:02,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:36:02,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 21:36:02,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 21:36:02,847 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-11-29 21:36:02,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 1761 transitions, 46153 flow. Second operand has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states 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 21:36:02,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:36:02,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-11-29 21:36:02,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:36:07,628 INFO L124 PetriNetUnfolderBase]: 6380/18461 cut-off events. [2023-11-29 21:36:07,628 INFO L125 PetriNetUnfolderBase]: For 328168/334154 co-relation queries the response was YES. [2023-11-29 21:36:07,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120975 conditions, 18461 events. 6380/18461 cut-off events. For 328168/334154 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 215665 event pairs, 530 based on Foata normal form. 343/17479 useless extension candidates. Maximal degree in co-relation 112243. Up to 9004 conditions per place. [2023-11-29 21:36:07,909 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 1566 selfloop transitions, 323 changer transitions 59/2211 dead transitions. [2023-11-29 21:36:07,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 2211 transitions, 63124 flow [2023-11-29 21:36:07,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 21:36:07,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 21:36:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1419 transitions. [2023-11-29 21:36:07,911 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7728758169934641 [2023-11-29 21:36:07,911 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1419 transitions. [2023-11-29 21:36:07,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1419 transitions. [2023-11-29 21:36:07,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:36:07,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1419 transitions. [2023-11-29 21:36:07,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.47058823529412) internal successors, (1419), 17 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states 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 21:36:07,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 21:36:07,915 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 21:36:07,916 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 144 predicate places. [2023-11-29 21:36:07,916 INFO L500 AbstractCegarLoop]: Abstraction has has 240 places, 2211 transitions, 63124 flow [2023-11-29 21:36:07,916 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states 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 21:36:07,916 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:36:07,916 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:07,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 21:36:08,120 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:36:08,121 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 21:36:08,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:36:08,121 INFO L85 PathProgramCache]: Analyzing trace with hash -687230545, now seen corresponding path program 5 times [2023-11-29 21:36:08,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:36:08,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967570089] [2023-11-29 21:36:08,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:36:08,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:36:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:36:08,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:36:08,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:36:08,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967570089] [2023-11-29 21:36:08,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967570089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:36:08,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396328312] [2023-11-29 21:36:08,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 21:36:08,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:36:08,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:36:08,311 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 21:36:08,314 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 21:36:08,379 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-29 21:36:08,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:36:08,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 21:36:08,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:36:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:36:08,524 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:36:08,635 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:36:08,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396328312] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:36:08,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:36:08,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-11-29 21:36:08,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158779613] [2023-11-29 21:36:08,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:36:08,636 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 21:36:08,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:36:08,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 21:36:08,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 21:36:08,637 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-11-29 21:36:08,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 2211 transitions, 63124 flow. Second operand has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 21:36:08,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:36:08,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-11-29 21:36:08,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:36:14,668 INFO L124 PetriNetUnfolderBase]: 6656/19274 cut-off events. [2023-11-29 21:36:14,668 INFO L125 PetriNetUnfolderBase]: For 393508/400768 co-relation queries the response was YES. [2023-11-29 21:36:14,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131069 conditions, 19274 events. 6656/19274 cut-off events. For 393508/400768 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 227414 event pairs, 551 based on Foata normal form. 215/18107 useless extension candidates. Maximal degree in co-relation 91925. Up to 9397 conditions per place. [2023-11-29 21:36:14,824 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 1885 selfloop transitions, 104 changer transitions 67/2319 dead transitions. [2023-11-29 21:36:14,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 2319 transitions, 70336 flow [2023-11-29 21:36:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 21:36:14,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 21:36:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1246 transitions. [2023-11-29 21:36:14,826 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7691358024691358 [2023-11-29 21:36:14,826 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1246 transitions. [2023-11-29 21:36:14,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1246 transitions. [2023-11-29 21:36:14,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:36:14,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1246 transitions. [2023-11-29 21:36:14,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 83.06666666666666) internal successors, (1246), 15 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 21:36:14,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 21:36:14,830 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 108.0) internal successors, (1728), 16 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 21:36:14,831 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 158 predicate places. [2023-11-29 21:36:14,831 INFO L500 AbstractCegarLoop]: Abstraction has has 254 places, 2319 transitions, 70336 flow [2023-11-29 21:36:14,831 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.36363636363636) internal successors, (895), 11 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 21:36:14,831 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:36:14,831 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:14,849 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 21:36:15,035 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:36:15,036 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 21:36:15,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:36:15,036 INFO L85 PathProgramCache]: Analyzing trace with hash 812425799, now seen corresponding path program 6 times [2023-11-29 21:36:15,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:36:15,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470718554] [2023-11-29 21:36:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:36:15,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:36:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:36:15,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:36:15,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:36:15,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470718554] [2023-11-29 21:36:15,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470718554] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:36:15,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497634893] [2023-11-29 21:36:15,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 21:36:15,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:36:15,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:36:15,295 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 21:36:15,312 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 21:36:15,392 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-29 21:36:15,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:36:15,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 21:36:15,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:36:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:36:15,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:36:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:36:15,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497634893] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:36:15,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:36:15,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-11-29 21:36:15,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715776193] [2023-11-29 21:36:15,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:36:15,663 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 21:36:15,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:36:15,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 21:36:15,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 21:36:15,664 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-11-29 21:36:15,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 2319 transitions, 70336 flow. Second operand has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states 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 21:36:15,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:36:15,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-11-29 21:36:15,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:36:24,391 INFO L124 PetriNetUnfolderBase]: 8767/25571 cut-off events. [2023-11-29 21:36:24,391 INFO L125 PetriNetUnfolderBase]: For 592664/603051 co-relation queries the response was YES. [2023-11-29 21:36:24,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178766 conditions, 25571 events. 8767/25571 cut-off events. For 592664/603051 co-relation queries the response was YES. Maximal size of possible extension queue 1156. Compared 312763 event pairs, 773 based on Foata normal form. 732/24445 useless extension candidates. Maximal degree in co-relation 119570. Up to 12281 conditions per place. [2023-11-29 21:36:24,617 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 2041 selfloop transitions, 591 changer transitions 94/2989 dead transitions. [2023-11-29 21:36:24,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 2989 transitions, 97808 flow [2023-11-29 21:36:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 21:36:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 21:36:24,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1421 transitions. [2023-11-29 21:36:24,619 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7739651416122004 [2023-11-29 21:36:24,619 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1421 transitions. [2023-11-29 21:36:24,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1421 transitions. [2023-11-29 21:36:24,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:36:24,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1421 transitions. [2023-11-29 21:36:24,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.58823529411765) internal successors, (1421), 17 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states 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 21:36:24,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 21:36:24,623 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 21:36:24,623 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 174 predicate places. [2023-11-29 21:36:24,623 INFO L500 AbstractCegarLoop]: Abstraction has has 270 places, 2989 transitions, 97808 flow [2023-11-29 21:36:24,623 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states 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 21:36:24,623 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:36:24,623 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:24,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 21:36:24,827 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,SelfDestructingSolverStorable15 [2023-11-29 21:36:24,827 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 21:36:24,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:36:24,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1270007183, now seen corresponding path program 7 times [2023-11-29 21:36:24,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:36:24,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902134373] [2023-11-29 21:36:24,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:36:24,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:36:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:36:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:36:25,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:36:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902134373] [2023-11-29 21:36:25,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902134373] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:36:25,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424670231] [2023-11-29 21:36:25,038 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 21:36:25,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:36:25,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:36:25,040 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 21:36:25,042 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 21:36:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:36:25,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 21:36:25,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:36:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:36:25,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:36:25,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 21:36:25,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424670231] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:36:25,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:36:25,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2023-11-29 21:36:25,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833747658] [2023-11-29 21:36:25,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:36:25,363 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 21:36:25,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:36:25,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 21:36:25,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 21:36:25,364 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 108 [2023-11-29 21:36:25,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 2989 transitions, 97808 flow. Second operand has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states 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 21:36:25,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:36:25,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 108 [2023-11-29 21:36:25,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:36:36,812 INFO L124 PetriNetUnfolderBase]: 9486/27870 cut-off events. [2023-11-29 21:36:36,812 INFO L125 PetriNetUnfolderBase]: For 723462/733866 co-relation queries the response was YES. [2023-11-29 21:36:36,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200709 conditions, 27870 events. 9486/27870 cut-off events. For 723462/733866 co-relation queries the response was YES. Maximal size of possible extension queue 1254. Compared 348657 event pairs, 842 based on Foata normal form. 462/26271 useless extension candidates. Maximal degree in co-relation 145396. Up to 13316 conditions per place. [2023-11-29 21:36:37,074 INFO L140 encePairwiseOnDemand]: 92/108 looper letters, 2649 selfloop transitions, 252 changer transitions 115/3279 dead transitions. [2023-11-29 21:36:37,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 3279 transitions, 113674 flow [2023-11-29 21:36:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 21:36:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 21:36:37,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1416 transitions. [2023-11-29 21:36:37,076 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7712418300653595 [2023-11-29 21:36:37,076 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1416 transitions. [2023-11-29 21:36:37,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1416 transitions. [2023-11-29 21:36:37,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:36:37,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1416 transitions. [2023-11-29 21:36:37,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.29411764705883) internal successors, (1416), 17 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states 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 21:36:37,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 21:36:37,080 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 21:36:37,080 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 190 predicate places. [2023-11-29 21:36:37,080 INFO L500 AbstractCegarLoop]: Abstraction has has 286 places, 3279 transitions, 113674 flow [2023-11-29 21:36:37,081 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 81.16666666666667) internal successors, (974), 12 states have internal predecessors, (974), 0 states have call successors, (0), 0 states 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 21:36:37,081 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:36:37,081 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:37,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 21:36:37,285 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 21:36:37,285 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 21:36:37,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:36:37,286 INFO L85 PathProgramCache]: Analyzing trace with hash -683437509, now seen corresponding path program 1 times [2023-11-29 21:36:37,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:36:37,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062559195] [2023-11-29 21:36:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:36:37,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:36:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:36:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 21:36:37,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:36:37,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062559195] [2023-11-29 21:36:37,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062559195] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 21:36:37,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 21:36:37,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 21:36:37,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459595149] [2023-11-29 21:36:37,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 21:36:37,355 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 21:36:37,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:36:37,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 21:36:37,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 21:36:37,356 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 108 [2023-11-29 21:36:37,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 3279 transitions, 113674 flow. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 21:36:37,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:36:37,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 108 [2023-11-29 21:36:37,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:36:43,327 INFO L124 PetriNetUnfolderBase]: 4503/13132 cut-off events. [2023-11-29 21:36:43,327 INFO L125 PetriNetUnfolderBase]: For 374102/379609 co-relation queries the response was YES. [2023-11-29 21:36:43,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97169 conditions, 13132 events. 4503/13132 cut-off events. For 374102/379609 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 145850 event pairs, 369 based on Foata normal form. 349/12582 useless extension candidates. Maximal degree in co-relation 90696. Up to 6302 conditions per place. [2023-11-29 21:36:43,428 INFO L140 encePairwiseOnDemand]: 104/108 looper letters, 1304 selfloop transitions, 7 changer transitions 94/1847 dead transitions. [2023-11-29 21:36:43,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1847 transitions, 62368 flow [2023-11-29 21:36:43,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 21:36:43,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 21:36:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 391 transitions. [2023-11-29 21:36:43,429 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.9050925925925926 [2023-11-29 21:36:43,429 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 391 transitions. [2023-11-29 21:36:43,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 391 transitions. [2023-11-29 21:36:43,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:36:43,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 391 transitions. [2023-11-29 21:36:43,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 97.75) internal successors, (391), 4 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 21:36:43,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 21:36:43,430 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 21:36:43,431 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 193 predicate places. [2023-11-29 21:36:43,431 INFO L500 AbstractCegarLoop]: Abstraction has has 289 places, 1847 transitions, 62368 flow [2023-11-29 21:36:43,431 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states 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 21:36:43,431 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:36:43,431 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:36:43,431 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 21:36:43,431 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 21:36:43,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:36:43,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1272054145, now seen corresponding path program 8 times [2023-11-29 21:36:43,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:36:43,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641179523] [2023-11-29 21:36:43,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:36:43,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:36:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:36:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:36:43,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:36:43,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641179523] [2023-11-29 21:36:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641179523] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:36:43,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331837342] [2023-11-29 21:36:43,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 21:36:43,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:36:43,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:36:43,734 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 21:36:43,736 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 21:36:43,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 21:36:43,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:36:43,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 21:36:43,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:36:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 21:36:44,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:36:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:36:45,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331837342] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:36:45,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:36:45,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 17] total 35 [2023-11-29 21:36:45,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242617610] [2023-11-29 21:36:45,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:36:45,274 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 21:36:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:36:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 21:36:45,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 21:36:45,278 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 108 [2023-11-29 21:36:45,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 1847 transitions, 62368 flow. Second operand has 35 states, 35 states have (on average 69.82857142857142) internal successors, (2444), 35 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states 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 21:36:45,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:36:45,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 108 [2023-11-29 21:36:45,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:37:42,494 INFO L124 PetriNetUnfolderBase]: 10579/30296 cut-off events. [2023-11-29 21:37:42,495 INFO L125 PetriNetUnfolderBase]: For 991557/1006408 co-relation queries the response was YES. [2023-11-29 21:37:42,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248387 conditions, 30296 events. 10579/30296 cut-off events. For 991557/1006408 co-relation queries the response was YES. Maximal size of possible extension queue 1546. Compared 385614 event pairs, 314 based on Foata normal form. 850/29411 useless extension candidates. Maximal degree in co-relation 171010. Up to 15612 conditions per place. [2023-11-29 21:37:42,925 INFO L140 encePairwiseOnDemand]: 86/108 looper letters, 4077 selfloop transitions, 387 changer transitions 176/4757 dead transitions. [2023-11-29 21:37:42,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 4757 transitions, 173734 flow [2023-11-29 21:37:42,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2023-11-29 21:37:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2023-11-29 21:37:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 8765 transitions. [2023-11-29 21:37:42,954 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.659816320385426 [2023-11-29 21:37:42,954 INFO L72 ComplementDD]: Start complementDD. Operand 123 states and 8765 transitions. [2023-11-29 21:37:42,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 123 states and 8765 transitions. [2023-11-29 21:37:42,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:37:42,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 123 states and 8765 transitions. [2023-11-29 21:37:42,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 124 states, 123 states have (on average 71.26016260162602) internal successors, (8765), 123 states have internal predecessors, (8765), 0 states have call successors, (0), 0 states 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 21:37:42,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 124 states, 124 states have (on average 108.0) internal successors, (13392), 124 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states 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 21:37:42,976 INFO L81 ComplementDD]: Finished complementDD. Result has 124 states, 124 states have (on average 108.0) internal successors, (13392), 124 states have internal predecessors, (13392), 0 states have call successors, (0), 0 states 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 21:37:42,976 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 315 predicate places. [2023-11-29 21:37:42,977 INFO L500 AbstractCegarLoop]: Abstraction has has 411 places, 4757 transitions, 173734 flow [2023-11-29 21:37:42,977 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 69.82857142857142) internal successors, (2444), 35 states have internal predecessors, (2444), 0 states have call successors, (0), 0 states 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 21:37:42,977 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:37:42,977 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:37:42,987 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 21:37:43,182 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:37:43,182 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 21:37:43,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:37:43,182 INFO L85 PathProgramCache]: Analyzing trace with hash 171323755, now seen corresponding path program 9 times [2023-11-29 21:37:43,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:37:43,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229158098] [2023-11-29 21:37:43,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:37:43,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:37:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:37:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:37:43,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:37:43,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229158098] [2023-11-29 21:37:43,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229158098] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:37:43,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845551875] [2023-11-29 21:37:43,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 21:37:43,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:37:43,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:37:43,573 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 21:37:43,575 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 21:37:43,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 21:37:43,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:37:43,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 21:37:43,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:37:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:37:44,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:37:45,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:37:45,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845551875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:37:45,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:37:45,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2023-11-29 21:37:45,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73369046] [2023-11-29 21:37:45,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:37:45,271 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 21:37:45,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:37:45,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 21:37:45,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 21:37:45,273 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 108 [2023-11-29 21:37:45,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 4757 transitions, 173734 flow. Second operand has 37 states, 37 states have (on average 69.83783783783784) internal successors, (2584), 37 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states 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 21:37:45,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:37:45,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 108 [2023-11-29 21:37:45,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:39:01,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:39:22,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:39:55,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:40:04,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:41:15,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:41:29,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:41:30,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:42:58,640 INFO L124 PetriNetUnfolderBase]: 34139/95888 cut-off events. [2023-11-29 21:42:58,640 INFO L125 PetriNetUnfolderBase]: For 3387836/3430854 co-relation queries the response was YES. [2023-11-29 21:42:59,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850718 conditions, 95888 events. 34139/95888 cut-off events. For 3387836/3430854 co-relation queries the response was YES. Maximal size of possible extension queue 3783. Compared 1364668 event pairs, 665 based on Foata normal form. 3084/93795 useless extension candidates. Maximal degree in co-relation 565290. Up to 51908 conditions per place. [2023-11-29 21:42:59,997 INFO L140 encePairwiseOnDemand]: 85/108 looper letters, 13948 selfloop transitions, 1628 changer transitions 537/16230 dead transitions. [2023-11-29 21:42:59,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 16230 transitions, 628542 flow [2023-11-29 21:42:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2023-11-29 21:42:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 283 states. [2023-11-29 21:43:00,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 20075 transitions. [2023-11-29 21:43:00,024 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6568184792566418 [2023-11-29 21:43:00,024 INFO L72 ComplementDD]: Start complementDD. Operand 283 states and 20075 transitions. [2023-11-29 21:43:00,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 283 states and 20075 transitions. [2023-11-29 21:43:00,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 21:43:00,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 283 states and 20075 transitions. [2023-11-29 21:43:00,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 284 states, 283 states have (on average 70.93639575971731) internal successors, (20075), 283 states have internal predecessors, (20075), 0 states have call successors, (0), 0 states 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 21:43:00,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 284 states, 284 states have (on average 108.0) internal successors, (30672), 284 states have internal predecessors, (30672), 0 states have call successors, (0), 0 states 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 21:43:00,082 INFO L81 ComplementDD]: Finished complementDD. Result has 284 states, 284 states have (on average 108.0) internal successors, (30672), 284 states have internal predecessors, (30672), 0 states have call successors, (0), 0 states 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 21:43:00,082 INFO L307 CegarLoopForPetriNet]: 96 programPoint places, 597 predicate places. [2023-11-29 21:43:00,082 INFO L500 AbstractCegarLoop]: Abstraction has has 693 places, 16230 transitions, 628542 flow [2023-11-29 21:43:00,083 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 69.83783783783784) internal successors, (2584), 37 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states 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 21:43:00,083 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 21:43:00,083 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:43:00,103 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 21:43:00,288 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:43:00,288 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 21:43:00,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 21:43:00,289 INFO L85 PathProgramCache]: Analyzing trace with hash -467895935, now seen corresponding path program 10 times [2023-11-29 21:43:00,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 21:43:00,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860307284] [2023-11-29 21:43:00,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 21:43:00,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 21:43:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 21:43:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:43:00,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 21:43:00,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860307284] [2023-11-29 21:43:00,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860307284] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 21:43:00,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926534409] [2023-11-29 21:43:00,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 21:43:00,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 21:43:00,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 21:43:00,692 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 21:43:00,693 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 21:43:00,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 21:43:00,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 21:43:00,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 21:43:00,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 21:43:02,615 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:43:02,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 21:43:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 21:43:08,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926534409] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 21:43:08,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 21:43:08,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 18] total 42 [2023-11-29 21:43:08,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711099028] [2023-11-29 21:43:08,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 21:43:08,177 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 21:43:08,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 21:43:08,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 21:43:08,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=1458, Unknown=0, NotChecked=0, Total=1722 [2023-11-29 21:43:08,187 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 108 [2023-11-29 21:43:08,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 16230 transitions, 628542 flow. Second operand has 42 states, 42 states have (on average 69.4047619047619) internal successors, (2915), 42 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states 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 21:43:08,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 21:43:08,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 108 [2023-11-29 21:43:08,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 21:44:11,978 WARN L293 SmtUtils]: Spent 12.30s on a formula simplification. DAG size of input: 85 DAG size of output: 79 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 21:44:17,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:45:11,683 WARN L293 SmtUtils]: Spent 10.31s on a formula simplification. DAG size of input: 72 DAG size of output: 72 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 21:45:36,858 WARN L293 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 84 DAG size of output: 78 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 21:45:41,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:45:43,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:45:46,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:45:49,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:46:11,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:46:24,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:47:13,204 WARN L293 SmtUtils]: Spent 23.24s on a formula simplification. DAG size of input: 100 DAG size of output: 93 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 21:47:52,692 WARN L293 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 80 DAG size of output: 73 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 21:48:22,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:48:24,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:48:26,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:48:28,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:48:33,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:48:35,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:48:37,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:48:38,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:49:23,821 WARN L293 SmtUtils]: Spent 9.24s on a formula simplification. DAG size of input: 85 DAG size of output: 78 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 21:49:25,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:49:53,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:49:55,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-29 21:49:58,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2023-11-29 21:50:03,163 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 21:50:03,196 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 21:50:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-11-29 21:50:03,292 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 21:50:03,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 21:50:03,492 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,SelfDestructingSolverStorable20 [2023-11-29 21:50:03,492 WARN L624 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 149 known predicates. [2023-11-29 21:50:03,494 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 21:50:03,494 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 21:50:03,494 INFO L457 BasicCegarLoop]: Path program histogram: [10, 2, 2, 2, 2, 1, 1, 1] [2023-11-29 21:50:03,496 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 21:50:03,496 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 21:50:03,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 09:50:03 BasicIcfg [2023-11-29 21:50:03,499 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 21:50:03,499 INFO L158 Benchmark]: Toolchain (without parser) took 860257.20ms. Allocated memory was 335.5MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 280.8MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. [2023-11-29 21:50:03,499 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 335.5MB. Free memory is still 284.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 21:50:03,499 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.84ms. Allocated memory is still 335.5MB. Free memory was 280.8MB in the beginning and 269.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-29 21:50:03,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.94ms. Allocated memory is still 335.5MB. Free memory was 269.6MB in the beginning and 267.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 21:50:03,499 INFO L158 Benchmark]: Boogie Preprocessor took 15.79ms. Allocated memory is still 335.5MB. Free memory was 267.5MB in the beginning and 266.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 21:50:03,499 INFO L158 Benchmark]: RCFGBuilder took 325.85ms. Allocated memory is still 335.5MB. Free memory was 266.3MB in the beginning and 250.7MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-11-29 21:50:03,500 INFO L158 Benchmark]: TraceAbstraction took 859734.73ms. Allocated memory was 335.5MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 250.1MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. [2023-11-29 21:50:03,500 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 335.5MB. Free memory is still 284.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 154.84ms. Allocated memory is still 335.5MB. Free memory was 280.8MB in the beginning and 269.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 21.94ms. Allocated memory is still 335.5MB. Free memory was 269.6MB in the beginning and 267.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 15.79ms. Allocated memory is still 335.5MB. Free memory was 267.5MB in the beginning and 266.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 325.85ms. Allocated memory is still 335.5MB. Free memory was 266.3MB in the beginning and 250.7MB in the end (delta: 15.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 859734.73ms. Allocated memory was 335.5MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 250.1MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 149 known predicates. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 149 known predicates. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 149 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 127 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 859.6s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 837.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 3829 SdHoareTripleChecker+Valid, 111.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3829 mSDsluCounter, 3150 SdHoareTripleChecker+Invalid, 108.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2687 mSDsCounter, 452 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11604 IncrementalHoareTripleChecker+Invalid, 12067 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 452 mSolverCounterUnsat, 463 mSDtfsCounter, 11604 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3176 GetRequests, 2273 SyntacticMatches, 79 SemanticMatches, 823 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53520 ImplicationChecksByTransitivity, 528.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=628542occurred in iteration=20, InterpolantAutomatonStates: 617, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 17.9s InterpolantComputationTime, 3214 NumberOfCodeBlocks, 3214 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 4381 ConstructedInterpolants, 0 QuantifiedInterpolants, 31171 SizeOfPredicates, 135 NumberOfNonLiveVariables, 2589 ConjunctsInSsa, 229 ConjunctsInUnsatCore, 45 InterpolantComputations, 9 PerfectInterpolantSequences, 141/704 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown