/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:55:48,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:55:48,770 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:55:48,799 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:55:48,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:55:48,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:55:48,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:55:48,801 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:55:48,801 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:55:48,804 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:55:48,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:55:48,805 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:55:48,805 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:55:48,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:55:48,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:55:48,806 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:55:48,806 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:55:48,807 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:55:48,807 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:55:48,807 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:55:48,807 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:55:48,808 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:55:48,808 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:55:48,808 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:55:48,808 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:55:48,808 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:55:48,808 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:55:48,809 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:55:48,810 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:55:48,810 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:55:48,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:55:48,811 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:55:48,811 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:55:48,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:55:49,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:55:49,007 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:55:49,008 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:55:49,008 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:55:49,009 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2023-11-17 15:55:50,040 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:55:50,263 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:55:50,264 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2023-11-17 15:55:50,272 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8407050/d026e84fe191467fba2cb4b071fd8eeb/FLAG028b7fe1d [2023-11-17 15:55:50,288 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8407050/d026e84fe191467fba2cb4b071fd8eeb [2023-11-17 15:55:50,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:55:50,291 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:55:50,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:55:50,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:55:50,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:55:50,297 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,298 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f44917e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50, skipping insertion in model container [2023-11-17 15:55:50,298 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,337 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:55:50,494 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2023-11-17 15:55:50,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:55:50,510 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:55:50,559 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c[12847,12860] [2023-11-17 15:55:50,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:55:50,567 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:55:50,567 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:55:50,571 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:55:50,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50 WrapperNode [2023-11-17 15:55:50,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:55:50,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:55:50,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:55:50,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:55:50,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,591 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,689 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1555 [2023-11-17 15:55:50,690 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:55:50,690 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:55:50,691 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:55:50,691 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:55:50,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,767 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,796 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,831 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,838 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:55:50,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:55:50,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:55:50,839 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:55:50,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (1/1) ... [2023-11-17 15:55:50,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:55:50,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:55:50,891 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:55:50,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:55:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:55:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:55:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:55:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:55:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:55:50,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:55:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:55:50,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:55:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:55:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:55:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:55:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:55:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:55:50,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:55:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:55:50,916 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:55:51,068 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:55:51,069 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:55:52,166 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:55:53,276 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:55:53,276 INFO L307 CfgBuilder]: Removed 12 assume(true) statements. [2023-11-17 15:55:53,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:55:53 BoogieIcfgContainer [2023-11-17 15:55:53,278 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:55:53,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:55:53,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:55:53,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:55:53,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:55:50" (1/3) ... [2023-11-17 15:55:53,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8c3f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:55:53, skipping insertion in model container [2023-11-17 15:55:53,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:55:50" (2/3) ... [2023-11-17 15:55:53,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8c3f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:55:53, skipping insertion in model container [2023-11-17 15:55:53,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:55:53" (3/3) ... [2023-11-17 15:55:53,284 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2023-11-17 15:55:53,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:55:53,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:55:53,296 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:55:53,557 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:55:53,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 460 places, 506 transitions, 1026 flow [2023-11-17 15:55:53,694 INFO L124 PetriNetUnfolderBase]: 53/504 cut-off events. [2023-11-17 15:55:53,695 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:55:53,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 504 events. 53/504 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 577 event pairs, 0 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 423. Up to 7 conditions per place. [2023-11-17 15:55:53,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 460 places, 506 transitions, 1026 flow [2023-11-17 15:55:53,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 495 transitions, 1002 flow [2023-11-17 15:55:53,712 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:55:53,720 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 449 places, 495 transitions, 1002 flow [2023-11-17 15:55:53,722 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 449 places, 495 transitions, 1002 flow [2023-11-17 15:55:53,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 449 places, 495 transitions, 1002 flow [2023-11-17 15:55:53,789 INFO L124 PetriNetUnfolderBase]: 53/495 cut-off events. [2023-11-17 15:55:53,789 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:55:53,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 504 conditions, 495 events. 53/495 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 579 event pairs, 0 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 423. Up to 7 conditions per place. [2023-11-17 15:55:53,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 7952 [2023-11-17 15:56:38,228 INFO L134 LiptonReduction]: Checked pairs total: 7711 [2023-11-17 15:56:38,228 INFO L136 LiptonReduction]: Total number of compositions: 589 [2023-11-17 15:56:38,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:56:38,255 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@9d50be9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:56:38,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 15:56:38,288 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:56:38,289 INFO L124 PetriNetUnfolderBase]: 16/38 cut-off events. [2023-11-17 15:56:38,289 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:56:38,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:38,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:38,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:56:38,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:38,294 INFO L85 PathProgramCache]: Analyzing trace with hash 345365670, now seen corresponding path program 1 times [2023-11-17 15:56:38,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:38,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031627041] [2023-11-17 15:56:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:38,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:56:38,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:38,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031627041] [2023-11-17 15:56:38,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031627041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:38,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:56:38,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:56:38,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120665928] [2023-11-17 15:56:38,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:38,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:56:38,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:38,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:56:38,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:56:38,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 1095 [2023-11-17 15:56:38,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 352.3333333333333) internal successors, (1057), 3 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:38,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:38,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 1095 [2023-11-17 15:56:38,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:39,152 INFO L124 PetriNetUnfolderBase]: 133/194 cut-off events. [2023-11-17 15:56:39,152 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-17 15:56:39,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 194 events. 133/194 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 370 event pairs, 45 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 308. Up to 193 conditions per place. [2023-11-17 15:56:39,154 INFO L140 encePairwiseOnDemand]: 1090/1095 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-11-17 15:56:39,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 176 flow [2023-11-17 15:56:39,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:56:39,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:56:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1081 transitions. [2023-11-17 15:56:39,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32907153729071537 [2023-11-17 15:56:39,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1081 transitions. [2023-11-17 15:56:39,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1081 transitions. [2023-11-17 15:56:39,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:39,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1081 transitions. [2023-11-17 15:56:39,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.3333333333333) internal successors, (1081), 3 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:39,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:39,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:39,194 INFO L175 Difference]: Start difference. First operand has 30 places, 39 transitions, 90 flow. Second operand 3 states and 1081 transitions. [2023-11-17 15:56:39,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 176 flow [2023-11-17 15:56:39,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:56:39,197 INFO L231 Difference]: Finished difference. Result has 29 places, 41 transitions, 104 flow [2023-11-17 15:56:39,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=29, PETRI_TRANSITIONS=41} [2023-11-17 15:56:39,200 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-11-17 15:56:39,201 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 41 transitions, 104 flow [2023-11-17 15:56:39,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 352.3333333333333) internal successors, (1057), 3 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:39,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:39,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:39,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:56:39,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:56:39,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:39,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2091116980, now seen corresponding path program 1 times [2023-11-17 15:56:39,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:39,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992977075] [2023-11-17 15:56:39,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:39,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:39,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:56:39,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:39,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992977075] [2023-11-17 15:56:39,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992977075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:39,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:56:39,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:56:39,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226713508] [2023-11-17 15:56:39,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:39,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:56:39,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:39,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:56:39,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:56:39,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 1095 [2023-11-17 15:56:39,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 41 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:39,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:39,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 1095 [2023-11-17 15:56:39,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:39,690 INFO L124 PetriNetUnfolderBase]: 133/198 cut-off events. [2023-11-17 15:56:39,690 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:56:39,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 198 events. 133/198 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 370 event pairs, 45 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 393. Up to 195 conditions per place. [2023-11-17 15:56:39,691 INFO L140 encePairwiseOnDemand]: 1086/1095 looper letters, 37 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2023-11-17 15:56:39,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 202 flow [2023-11-17 15:56:39,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:56:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:56:39,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1085 transitions. [2023-11-17 15:56:39,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3302891933028919 [2023-11-17 15:56:39,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1085 transitions. [2023-11-17 15:56:39,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1085 transitions. [2023-11-17 15:56:39,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:39,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1085 transitions. [2023-11-17 15:56:39,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.6666666666667) internal successors, (1085), 3 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:39,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:39,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:39,702 INFO L175 Difference]: Start difference. First operand has 29 places, 41 transitions, 104 flow. Second operand 3 states and 1085 transitions. [2023-11-17 15:56:39,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 202 flow [2023-11-17 15:56:39,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 45 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:56:39,704 INFO L231 Difference]: Finished difference. Result has 31 places, 45 transitions, 142 flow [2023-11-17 15:56:39,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=31, PETRI_TRANSITIONS=45} [2023-11-17 15:56:39,705 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-11-17 15:56:39,705 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 45 transitions, 142 flow [2023-11-17 15:56:39,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:39,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:39,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:39,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:56:39,708 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:56:39,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:39,709 INFO L85 PathProgramCache]: Analyzing trace with hash -572591892, now seen corresponding path program 1 times [2023-11-17 15:56:39,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:39,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776747869] [2023-11-17 15:56:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:39,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 15:56:39,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:39,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776747869] [2023-11-17 15:56:39,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776747869] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:56:39,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:56:39,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:56:39,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557270841] [2023-11-17 15:56:39,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:56:39,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:56:39,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:39,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:56:39,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:56:39,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 1095 [2023-11-17 15:56:39,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 45 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 354.3333333333333) internal successors, (1063), 3 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:39,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:39,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 1095 [2023-11-17 15:56:39,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:40,301 INFO L124 PetriNetUnfolderBase]: 133/200 cut-off events. [2023-11-17 15:56:40,301 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:56:40,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 200 events. 133/200 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 370 event pairs, 45 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 407. Up to 199 conditions per place. [2023-11-17 15:56:40,302 INFO L140 encePairwiseOnDemand]: 1090/1095 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-11-17 15:56:40,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 240 flow [2023-11-17 15:56:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:56:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:56:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1081 transitions. [2023-11-17 15:56:40,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32907153729071537 [2023-11-17 15:56:40,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1081 transitions. [2023-11-17 15:56:40,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1081 transitions. [2023-11-17 15:56:40,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:40,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1081 transitions. [2023-11-17 15:56:40,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.3333333333333) internal successors, (1081), 3 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:40,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:40,315 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:40,315 INFO L175 Difference]: Start difference. First operand has 31 places, 45 transitions, 142 flow. Second operand 3 states and 1081 transitions. [2023-11-17 15:56:40,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 240 flow [2023-11-17 15:56:40,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:56:40,317 INFO L231 Difference]: Finished difference. Result has 33 places, 47 transitions, 156 flow [2023-11-17 15:56:40,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=33, PETRI_TRANSITIONS=47} [2023-11-17 15:56:40,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-11-17 15:56:40,317 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 47 transitions, 156 flow [2023-11-17 15:56:40,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 354.3333333333333) internal successors, (1063), 3 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:40,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:40,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:40,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:56:40,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:56:40,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash 732933169, now seen corresponding path program 1 times [2023-11-17 15:56:40,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:40,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157958047] [2023-11-17 15:56:40,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:40,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 15:56:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157958047] [2023-11-17 15:56:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157958047] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:56:40,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510125136] [2023-11-17 15:56:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:40,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:56:40,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:56:40,550 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:56:40,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:56:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:41,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:56:41,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:56:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 15:56:41,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:56:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-17 15:56:41,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510125136] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:56:41,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:56:41,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-11-17 15:56:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683402781] [2023-11-17 15:56:41,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:56:41,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:56:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:56:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:56:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:56:41,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 1095 [2023-11-17 15:56:41,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 47 transitions, 156 flow. Second operand has 8 states, 8 states have (on average 350.375) internal successors, (2803), 8 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:41,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:56:41,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 1095 [2023-11-17 15:56:41,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:56:41,651 INFO L124 PetriNetUnfolderBase]: 133/216 cut-off events. [2023-11-17 15:56:41,651 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:56:41,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 216 events. 133/216 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 370 event pairs, 45 based on Foata normal form. 7/138 useless extension candidates. Maximal degree in co-relation 442. Up to 193 conditions per place. [2023-11-17 15:56:41,654 INFO L140 encePairwiseOnDemand]: 1078/1095 looper letters, 31 selfloop transitions, 32 changer transitions 0/63 dead transitions. [2023-11-17 15:56:41,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 63 transitions, 346 flow [2023-11-17 15:56:41,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:56:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:56:41,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2847 transitions. [2023-11-17 15:56:41,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325 [2023-11-17 15:56:41,660 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2847 transitions. [2023-11-17 15:56:41,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2847 transitions. [2023-11-17 15:56:41,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:56:41,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2847 transitions. [2023-11-17 15:56:41,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 355.875) internal successors, (2847), 8 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:41,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1095.0) internal successors, (9855), 9 states have internal predecessors, (9855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:41,678 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1095.0) internal successors, (9855), 9 states have internal predecessors, (9855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:41,678 INFO L175 Difference]: Start difference. First operand has 33 places, 47 transitions, 156 flow. Second operand 8 states and 2847 transitions. [2023-11-17 15:56:41,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 63 transitions, 346 flow [2023-11-17 15:56:41,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 63 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:56:41,681 INFO L231 Difference]: Finished difference. Result has 42 places, 63 transitions, 338 flow [2023-11-17 15:56:41,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=338, PETRI_PLACES=42, PETRI_TRANSITIONS=63} [2023-11-17 15:56:41,683 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2023-11-17 15:56:41,683 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 63 transitions, 338 flow [2023-11-17 15:56:41,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 350.375) internal successors, (2803), 8 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:56:41,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:56:41,684 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:56:41,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 15:56:41,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:56:41,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:56:41,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:56:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1137189816, now seen corresponding path program 2 times [2023-11-17 15:56:41,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:56:41,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901614279] [2023-11-17 15:56:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:56:41,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:56:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:56:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-17 15:56:42,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:56:42,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901614279] [2023-11-17 15:56:42,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901614279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:56:42,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518989127] [2023-11-17 15:56:42,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:56:42,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:56:42,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:56:42,151 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:56:42,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:56:42,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:56:42,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:56:42,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:56:42,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:56:45,486 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:56:45,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1311 treesize of output 1137 [2023-11-17 15:57:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-17 15:57:08,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:57:08,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518989127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:08,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:57:08,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2023-11-17 15:57:08,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270299733] [2023-11-17 15:57:08,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:08,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:08,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:08,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:08,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:57:08,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 1095 [2023-11-17 15:57:08,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 63 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:08,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:08,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 1095 [2023-11-17 15:57:08,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:08,707 INFO L124 PetriNetUnfolderBase]: 220/348 cut-off events. [2023-11-17 15:57:08,707 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 15:57:08,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 348 events. 220/348 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 873 event pairs, 29 based on Foata normal form. 1/215 useless extension candidates. Maximal degree in co-relation 751. Up to 211 conditions per place. [2023-11-17 15:57:08,709 INFO L140 encePairwiseOnDemand]: 1080/1095 looper letters, 77 selfloop transitions, 13 changer transitions 6/96 dead transitions. [2023-11-17 15:57:08,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 96 transitions, 602 flow [2023-11-17 15:57:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:08,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2180 transitions. [2023-11-17 15:57:08,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39817351598173517 [2023-11-17 15:57:08,714 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2180 transitions. [2023-11-17 15:57:08,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2180 transitions. [2023-11-17 15:57:08,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:08,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2180 transitions. [2023-11-17 15:57:08,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 436.0) internal successors, (2180), 5 states have internal predecessors, (2180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:08,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:08,723 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:08,723 INFO L175 Difference]: Start difference. First operand has 42 places, 63 transitions, 338 flow. Second operand 5 states and 2180 transitions. [2023-11-17 15:57:08,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 96 transitions, 602 flow [2023-11-17 15:57:08,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 96 transitions, 552 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-11-17 15:57:08,726 INFO L231 Difference]: Finished difference. Result has 46 places, 74 transitions, 378 flow [2023-11-17 15:57:08,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=46, PETRI_TRANSITIONS=74} [2023-11-17 15:57:08,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2023-11-17 15:57:08,727 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 74 transitions, 378 flow [2023-11-17 15:57:08,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:08,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:08,728 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:08,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-17 15:57:08,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:08,936 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:57:08,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:08,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1044809090, now seen corresponding path program 3 times [2023-11-17 15:57:08,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:08,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942057504] [2023-11-17 15:57:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:08,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-17 15:57:09,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942057504] [2023-11-17 15:57:09,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942057504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:09,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68565038] [2023-11-17 15:57:09,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:57:09,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:09,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:09,229 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:57:09,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:57:09,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 15:57:09,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:57:09,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:57:09,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:57:11,640 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:57:11,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1311 treesize of output 1137 [2023-11-17 15:57:30,001 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-17 15:57:30,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:57:30,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68565038] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:57:30,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:57:30,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-17 15:57:30,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373569157] [2023-11-17 15:57:30,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:57:30,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:57:30,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:30,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:57:30,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:57:30,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 1095 [2023-11-17 15:57:30,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 74 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:30,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:30,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 1095 [2023-11-17 15:57:30,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:30,605 INFO L124 PetriNetUnfolderBase]: 222/362 cut-off events. [2023-11-17 15:57:30,605 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-17 15:57:30,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 362 events. 222/362 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 990 event pairs, 31 based on Foata normal form. 3/255 useless extension candidates. Maximal degree in co-relation 1110. Up to 242 conditions per place. [2023-11-17 15:57:30,607 INFO L140 encePairwiseOnDemand]: 1081/1095 looper letters, 78 selfloop transitions, 12 changer transitions 5/95 dead transitions. [2023-11-17 15:57:30,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 95 transitions, 634 flow [2023-11-17 15:57:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:57:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:57:30,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2178 transitions. [2023-11-17 15:57:30,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978082191780822 [2023-11-17 15:57:30,611 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2178 transitions. [2023-11-17 15:57:30,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2178 transitions. [2023-11-17 15:57:30,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:30,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2178 transitions. [2023-11-17 15:57:30,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 435.6) internal successors, (2178), 5 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:30,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:30,620 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:30,620 INFO L175 Difference]: Start difference. First operand has 46 places, 74 transitions, 378 flow. Second operand 5 states and 2178 transitions. [2023-11-17 15:57:30,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 95 transitions, 634 flow [2023-11-17 15:57:30,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 95 transitions, 630 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-17 15:57:30,622 INFO L231 Difference]: Finished difference. Result has 50 places, 74 transitions, 410 flow [2023-11-17 15:57:30,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=410, PETRI_PLACES=50, PETRI_TRANSITIONS=74} [2023-11-17 15:57:30,623 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-11-17 15:57:30,623 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 74 transitions, 410 flow [2023-11-17 15:57:30,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 427.75) internal successors, (1711), 4 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:30,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:30,623 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:30,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:57:30,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:30,831 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:57:30,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:30,832 INFO L85 PathProgramCache]: Analyzing trace with hash -332068818, now seen corresponding path program 4 times [2023-11-17 15:57:30,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:30,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554007089] [2023-11-17 15:57:30,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:30,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:31,079 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-17 15:57:31,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:31,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554007089] [2023-11-17 15:57:31,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554007089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:31,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715426533] [2023-11-17 15:57:31,080 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:57:31,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:31,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:31,081 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:57:31,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:57:31,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:57:31,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:57:31,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:57:31,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:57:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-17 15:57:31,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:57:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-17 15:57:31,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715426533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:57:31,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:57:31,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-11-17 15:57:31,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871685282] [2023-11-17 15:57:31,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:57:31,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 15:57:31,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:57:31,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 15:57:31,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-17 15:57:31,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 1095 [2023-11-17 15:57:31,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 74 transitions, 410 flow. Second operand has 17 states, 17 states have (on average 348.5882352941176) internal successors, (5926), 17 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:31,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:57:31,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 1095 [2023-11-17 15:57:31,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:57:32,378 INFO L124 PetriNetUnfolderBase]: 221/368 cut-off events. [2023-11-17 15:57:32,378 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2023-11-17 15:57:32,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1278 conditions, 368 events. 221/368 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 894 event pairs, 69 based on Foata normal form. 10/268 useless extension candidates. Maximal degree in co-relation 1255. Up to 333 conditions per place. [2023-11-17 15:57:32,381 INFO L140 encePairwiseOnDemand]: 1078/1095 looper letters, 42 selfloop transitions, 44 changer transitions 0/86 dead transitions. [2023-11-17 15:57:32,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 650 flow [2023-11-17 15:57:32,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:57:32,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:57:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 5623 transitions. [2023-11-17 15:57:32,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32094748858447486 [2023-11-17 15:57:32,401 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 5623 transitions. [2023-11-17 15:57:32,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 5623 transitions. [2023-11-17 15:57:32,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:57:32,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 5623 transitions. [2023-11-17 15:57:32,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 351.4375) internal successors, (5623), 16 states have internal predecessors, (5623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:32,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1095.0) internal successors, (18615), 17 states have internal predecessors, (18615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:32,423 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1095.0) internal successors, (18615), 17 states have internal predecessors, (18615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:32,423 INFO L175 Difference]: Start difference. First operand has 50 places, 74 transitions, 410 flow. Second operand 16 states and 5623 transitions. [2023-11-17 15:57:32,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 650 flow [2023-11-17 15:57:32,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 86 transitions, 637 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:57:32,426 INFO L231 Difference]: Finished difference. Result has 64 places, 86 transitions, 579 flow [2023-11-17 15:57:32,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=579, PETRI_PLACES=64, PETRI_TRANSITIONS=86} [2023-11-17 15:57:32,426 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2023-11-17 15:57:32,426 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 86 transitions, 579 flow [2023-11-17 15:57:32,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 348.5882352941176) internal successors, (5926), 17 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:57:32,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:57:32,428 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:57:32,436 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-17 15:57:32,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:32,636 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:57:32,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:57:32,637 INFO L85 PathProgramCache]: Analyzing trace with hash -529160857, now seen corresponding path program 5 times [2023-11-17 15:57:32,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:57:32,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4334425] [2023-11-17 15:57:32,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:57:32,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:57:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:57:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-17 15:57:32,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:57:32,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4334425] [2023-11-17 15:57:32,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4334425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:57:32,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021366093] [2023-11-17 15:57:32,932 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:57:32,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:57:32,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:57:32,933 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) [2023-11-17 15:57:32,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:01:10,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 16:01:10,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:11,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 16:01:11,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-17 16:01:11,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-17 16:01:11,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021366093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:11,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:11,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-11-17 16:01:11,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112662564] [2023-11-17 16:01:11,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:11,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:01:11,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:01:11,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:01:11,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 1095 [2023-11-17 16:01:11,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 86 transitions, 579 flow. Second operand has 20 states, 20 states have (on average 348.25) internal successors, (6965), 20 states have internal predecessors, (6965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:11,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:11,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 1095 [2023-11-17 16:01:11,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:11,677 INFO L124 PetriNetUnfolderBase]: 221/382 cut-off events. [2023-11-17 16:01:11,677 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2023-11-17 16:01:11,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 382 events. 221/382 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 907 event pairs, 69 based on Foata normal form. 14/288 useless extension candidates. Maximal degree in co-relation 1324. Up to 333 conditions per place. [2023-11-17 16:01:11,680 INFO L140 encePairwiseOnDemand]: 1078/1095 looper letters, 42 selfloop transitions, 58 changer transitions 0/100 dead transitions. [2023-11-17 16:01:11,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 100 transitions, 891 flow [2023-11-17 16:01:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 16:01:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 16:01:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4947 transitions. [2023-11-17 16:01:11,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3227005870841487 [2023-11-17 16:01:11,689 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4947 transitions. [2023-11-17 16:01:11,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4947 transitions. [2023-11-17 16:01:11,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:11,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4947 transitions. [2023-11-17 16:01:11,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 353.35714285714283) internal successors, (4947), 14 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:11,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 1095.0) internal successors, (16425), 15 states have internal predecessors, (16425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:11,712 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 1095.0) internal successors, (16425), 15 states have internal predecessors, (16425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:11,713 INFO L175 Difference]: Start difference. First operand has 64 places, 86 transitions, 579 flow. Second operand 14 states and 4947 transitions. [2023-11-17 16:01:11,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 100 transitions, 891 flow [2023-11-17 16:01:11,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 100 transitions, 773 flow, removed 27 selfloop flow, removed 8 redundant places. [2023-11-17 16:01:11,719 INFO L231 Difference]: Finished difference. Result has 76 places, 100 transitions, 787 flow [2023-11-17 16:01:11,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=787, PETRI_PLACES=76, PETRI_TRANSITIONS=100} [2023-11-17 16:01:11,722 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2023-11-17 16:01:11,722 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 100 transitions, 787 flow [2023-11-17 16:01:11,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 348.25) internal successors, (6965), 20 states have internal predecessors, (6965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:01:11,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:11,724 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:11,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 16:01:11,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:11,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:01:11,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:11,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1832060706, now seen corresponding path program 6 times [2023-11-17 16:01:11,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:11,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994080042] [2023-11-17 16:01:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:11,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-17 16:01:12,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:12,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994080042] [2023-11-17 16:01:12,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994080042] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:12,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069987127] [2023-11-17 16:01:12,442 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:01:12,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:12,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:12,444 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) [2023-11-17 16:01:12,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 16:01:13,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-17 16:01:13,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:13,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 16:01:13,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:13,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-17 16:01:14,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:01:14,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:01:14,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:01:14,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:01:14,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:01:14,913 INFO L349 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-11-17 16:01:14,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 448 treesize of output 390 [2023-11-17 16:01:16,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:01:16,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1311 treesize of output 1137 [2023-11-17 16:02:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-17 16:02:13,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:02:13,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069987127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:13,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:02:13,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 25 [2023-11-17 16:02:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627202517] [2023-11-17 16:02:13,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:13,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:02:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:13,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:02:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2023-11-17 16:02:13,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 374 out of 1095 [2023-11-17 16:02:13,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 100 transitions, 787 flow. Second operand has 12 states, 12 states have (on average 376.25) internal successors, (4515), 12 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:13,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:13,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 374 of 1095 [2023-11-17 16:02:13,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:14,829 INFO L124 PetriNetUnfolderBase]: 223/394 cut-off events. [2023-11-17 16:02:14,829 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2023-11-17 16:02:14,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 394 events. 223/394 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1035 event pairs, 26 based on Foata normal form. 5/291 useless extension candidates. Maximal degree in co-relation 1397. Up to 225 conditions per place. [2023-11-17 16:02:14,831 INFO L140 encePairwiseOnDemand]: 1080/1095 looper letters, 102 selfloop transitions, 13 changer transitions 7/122 dead transitions. [2023-11-17 16:02:14,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 122 transitions, 1106 flow [2023-11-17 16:02:14,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:02:14,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:02:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2693 transitions. [2023-11-17 16:02:14,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3513372472276582 [2023-11-17 16:02:14,835 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2693 transitions. [2023-11-17 16:02:14,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2693 transitions. [2023-11-17 16:02:14,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:14,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2693 transitions. [2023-11-17 16:02:14,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 384.7142857142857) internal successors, (2693), 7 states have internal predecessors, (2693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:14,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1095.0) internal successors, (8760), 8 states have internal predecessors, (8760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:14,844 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1095.0) internal successors, (8760), 8 states have internal predecessors, (8760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:14,844 INFO L175 Difference]: Start difference. First operand has 76 places, 100 transitions, 787 flow. Second operand 7 states and 2693 transitions. [2023-11-17 16:02:14,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 122 transitions, 1106 flow [2023-11-17 16:02:14,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 1018 flow, removed 34 selfloop flow, removed 5 redundant places. [2023-11-17 16:02:14,849 INFO L231 Difference]: Finished difference. Result has 79 places, 99 transitions, 730 flow [2023-11-17 16:02:14,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=730, PETRI_PLACES=79, PETRI_TRANSITIONS=99} [2023-11-17 16:02:14,850 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2023-11-17 16:02:14,850 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 99 transitions, 730 flow [2023-11-17 16:02:14,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 376.25) internal successors, (4515), 12 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:14,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:14,851 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:14,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-17 16:02:15,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:15,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:15,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash -921466219, now seen corresponding path program 1 times [2023-11-17 16:02:15,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:15,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773035116] [2023-11-17 16:02:15,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:15,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:15,481 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-17 16:02:15,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:15,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773035116] [2023-11-17 16:02:15,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773035116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:15,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912793975] [2023-11-17 16:02:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:15,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:15,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:15,491 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) [2023-11-17 16:02:15,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 16:02:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:16,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 16:02:16,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-17 16:02:16,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:02:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-17 16:02:16,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912793975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:02:16,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:02:16,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 41 [2023-11-17 16:02:16,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786393961] [2023-11-17 16:02:16,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:02:16,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-17 16:02:16,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:16,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-17 16:02:16,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1054, Unknown=0, NotChecked=0, Total=1640 [2023-11-17 16:02:16,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 346 out of 1095 [2023-11-17 16:02:16,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 99 transitions, 730 flow. Second operand has 41 states, 41 states have (on average 347.6341463414634) internal successors, (14253), 41 states have internal predecessors, (14253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:16,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:16,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 346 of 1095 [2023-11-17 16:02:16,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:17,357 INFO L124 PetriNetUnfolderBase]: 220/383 cut-off events. [2023-11-17 16:02:17,357 INFO L125 PetriNetUnfolderBase]: For 519/519 co-relation queries the response was YES. [2023-11-17 16:02:17,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 383 events. 220/383 cut-off events. For 519/519 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 875 event pairs, 76 based on Foata normal form. 2/277 useless extension candidates. Maximal degree in co-relation 1507. Up to 332 conditions per place. [2023-11-17 16:02:17,359 INFO L140 encePairwiseOnDemand]: 1078/1095 looper letters, 41 selfloop transitions, 60 changer transitions 0/101 dead transitions. [2023-11-17 16:02:17,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 101 transitions, 952 flow [2023-11-17 16:02:17,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 16:02:17,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 16:02:17,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 7013 transitions. [2023-11-17 16:02:17,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3202283105022831 [2023-11-17 16:02:17,367 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 7013 transitions. [2023-11-17 16:02:17,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 7013 transitions. [2023-11-17 16:02:17,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:17,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 7013 transitions. [2023-11-17 16:02:17,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 350.65) internal successors, (7013), 20 states have internal predecessors, (7013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 1095.0) internal successors, (22995), 21 states have internal predecessors, (22995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,390 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 1095.0) internal successors, (22995), 21 states have internal predecessors, (22995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,390 INFO L175 Difference]: Start difference. First operand has 79 places, 99 transitions, 730 flow. Second operand 20 states and 7013 transitions. [2023-11-17 16:02:17,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 101 transitions, 952 flow [2023-11-17 16:02:17,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 101 transitions, 917 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-17 16:02:17,394 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 845 flow [2023-11-17 16:02:17,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=845, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2023-11-17 16:02:17,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2023-11-17 16:02:17,395 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 845 flow [2023-11-17 16:02:17,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 347.6341463414634) internal successors, (14253), 41 states have internal predecessors, (14253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:17,396 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:17,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 16:02:17,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:17,605 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:17,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:17,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1269036575, now seen corresponding path program 1 times [2023-11-17 16:02:17,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:17,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866149283] [2023-11-17 16:02:17,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:17,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-17 16:02:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866149283] [2023-11-17 16:02:17,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866149283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:17,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:17,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:02:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297824023] [2023-11-17 16:02:17,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:17,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:02:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:02:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:02:17,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 1095 [2023-11-17 16:02:17,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 845 flow. Second operand has 3 states, 3 states have (on average 441.3333333333333) internal successors, (1324), 3 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:17,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:17,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 1095 [2023-11-17 16:02:17,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:18,348 INFO L124 PetriNetUnfolderBase]: 249/440 cut-off events. [2023-11-17 16:02:18,349 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2023-11-17 16:02:18,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1676 conditions, 440 events. 249/440 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1189 event pairs, 52 based on Foata normal form. 14/332 useless extension candidates. Maximal degree in co-relation 1566. Up to 277 conditions per place. [2023-11-17 16:02:18,351 INFO L140 encePairwiseOnDemand]: 1088/1095 looper letters, 119 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2023-11-17 16:02:18,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 122 transitions, 1176 flow [2023-11-17 16:02:18,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:02:18,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:02:18,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1354 transitions. [2023-11-17 16:02:18,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121765601217656 [2023-11-17 16:02:18,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1354 transitions. [2023-11-17 16:02:18,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1354 transitions. [2023-11-17 16:02:18,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:18,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1354 transitions. [2023-11-17 16:02:18,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 451.3333333333333) internal successors, (1354), 3 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:18,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:18,357 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:18,357 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 845 flow. Second operand 3 states and 1354 transitions. [2023-11-17 16:02:18,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 122 transitions, 1176 flow [2023-11-17 16:02:18,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 992 flow, removed 16 selfloop flow, removed 17 redundant places. [2023-11-17 16:02:18,361 INFO L231 Difference]: Finished difference. Result has 79 places, 104 transitions, 703 flow [2023-11-17 16:02:18,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=703, PETRI_PLACES=79, PETRI_TRANSITIONS=104} [2023-11-17 16:02:18,362 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 49 predicate places. [2023-11-17 16:02:18,362 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 104 transitions, 703 flow [2023-11-17 16:02:18,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 441.3333333333333) internal successors, (1324), 3 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:18,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:18,362 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:18,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 16:02:18,362 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:18,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:18,363 INFO L85 PathProgramCache]: Analyzing trace with hash 632338800, now seen corresponding path program 2 times [2023-11-17 16:02:18,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:18,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987249950] [2023-11-17 16:02:18,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:18,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-17 16:02:18,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:18,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987249950] [2023-11-17 16:02:18,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987249950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:18,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:18,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:02:18,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045990454] [2023-11-17 16:02:18,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:18,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:02:18,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:18,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:02:18,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:02:18,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1095 [2023-11-17 16:02:18,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 104 transitions, 703 flow. Second operand has 3 states, 3 states have (on average 457.3333333333333) internal successors, (1372), 3 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:18,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:18,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1095 [2023-11-17 16:02:18,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:19,009 INFO L124 PetriNetUnfolderBase]: 267/484 cut-off events. [2023-11-17 16:02:19,009 INFO L125 PetriNetUnfolderBase]: For 562/562 co-relation queries the response was YES. [2023-11-17 16:02:19,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 484 events. 267/484 cut-off events. For 562/562 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1405 event pairs, 67 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 1712. Up to 350 conditions per place. [2023-11-17 16:02:19,012 INFO L140 encePairwiseOnDemand]: 1092/1095 looper letters, 112 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-11-17 16:02:19,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 115 transitions, 973 flow [2023-11-17 16:02:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:02:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:02:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1397 transitions. [2023-11-17 16:02:19,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252663622526636 [2023-11-17 16:02:19,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1397 transitions. [2023-11-17 16:02:19,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1397 transitions. [2023-11-17 16:02:19,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:19,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1397 transitions. [2023-11-17 16:02:19,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 465.6666666666667) internal successors, (1397), 3 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,018 INFO L175 Difference]: Start difference. First operand has 79 places, 104 transitions, 703 flow. Second operand 3 states and 1397 transitions. [2023-11-17 16:02:19,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 115 transitions, 973 flow [2023-11-17 16:02:19,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 115 transitions, 959 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 16:02:19,022 INFO L231 Difference]: Finished difference. Result has 80 places, 104 transitions, 702 flow [2023-11-17 16:02:19,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=80, PETRI_TRANSITIONS=104} [2023-11-17 16:02:19,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2023-11-17 16:02:19,022 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 104 transitions, 702 flow [2023-11-17 16:02:19,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 457.3333333333333) internal successors, (1372), 3 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:19,023 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:19,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 16:02:19,023 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:19,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1199270476, now seen corresponding path program 1 times [2023-11-17 16:02:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:19,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27057318] [2023-11-17 16:02:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:19,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-17 16:02:19,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:19,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27057318] [2023-11-17 16:02:19,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27057318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:19,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:19,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:02:19,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13483025] [2023-11-17 16:02:19,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:19,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:02:19,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:19,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:02:19,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:02:19,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1095 [2023-11-17 16:02:19,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 104 transitions, 702 flow. Second operand has 3 states, 3 states have (on average 457.3333333333333) internal successors, (1372), 3 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:19,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1095 [2023-11-17 16:02:19,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:19,737 INFO L124 PetriNetUnfolderBase]: 297/559 cut-off events. [2023-11-17 16:02:19,737 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2023-11-17 16:02:19,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2071 conditions, 559 events. 297/559 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1891 event pairs, 109 based on Foata normal form. 0/429 useless extension candidates. Maximal degree in co-relation 1977. Up to 423 conditions per place. [2023-11-17 16:02:19,739 INFO L140 encePairwiseOnDemand]: 1092/1095 looper letters, 116 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2023-11-17 16:02:19,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 119 transitions, 1009 flow [2023-11-17 16:02:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:02:19,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:02:19,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1399 transitions. [2023-11-17 16:02:19,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258751902587519 [2023-11-17 16:02:19,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1399 transitions. [2023-11-17 16:02:19,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1399 transitions. [2023-11-17 16:02:19,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:19,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1399 transitions. [2023-11-17 16:02:19,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 466.3333333333333) internal successors, (1399), 3 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,745 INFO L175 Difference]: Start difference. First operand has 80 places, 104 transitions, 702 flow. Second operand 3 states and 1399 transitions. [2023-11-17 16:02:19,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 119 transitions, 1009 flow [2023-11-17 16:02:19,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 1005 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:02:19,749 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 710 flow [2023-11-17 16:02:19,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=710, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-11-17 16:02:19,749 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-11-17 16:02:19,749 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 710 flow [2023-11-17 16:02:19,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 457.3333333333333) internal successors, (1372), 3 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:19,749 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:19,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 16:02:19,750 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:19,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:19,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1926494573, now seen corresponding path program 1 times [2023-11-17 16:02:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:19,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965329549] [2023-11-17 16:02:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:19,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-17 16:02:19,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:19,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965329549] [2023-11-17 16:02:19,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965329549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:19,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:19,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:02:19,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695720297] [2023-11-17 16:02:19,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:19,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:02:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:19,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:02:19,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:02:19,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1095 [2023-11-17 16:02:19,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 710 flow. Second operand has 3 states, 3 states have (on average 457.3333333333333) internal successors, (1372), 3 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:19,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:19,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1095 [2023-11-17 16:02:19,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:20,439 INFO L124 PetriNetUnfolderBase]: 303/579 cut-off events. [2023-11-17 16:02:20,439 INFO L125 PetriNetUnfolderBase]: For 572/572 co-relation queries the response was YES. [2023-11-17 16:02:20,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2146 conditions, 579 events. 303/579 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2027 event pairs, 118 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 2050. Up to 372 conditions per place. [2023-11-17 16:02:20,442 INFO L140 encePairwiseOnDemand]: 1092/1095 looper letters, 117 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-11-17 16:02:20,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 120 transitions, 1020 flow [2023-11-17 16:02:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:02:20,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:02:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1399 transitions. [2023-11-17 16:02:20,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258751902587519 [2023-11-17 16:02:20,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1399 transitions. [2023-11-17 16:02:20,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1399 transitions. [2023-11-17 16:02:20,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:20,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1399 transitions. [2023-11-17 16:02:20,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 466.3333333333333) internal successors, (1399), 3 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:20,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:20,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:20,449 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 710 flow. Second operand 3 states and 1399 transitions. [2023-11-17 16:02:20,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 120 transitions, 1020 flow [2023-11-17 16:02:20,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 120 transitions, 1017 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:02:20,453 INFO L231 Difference]: Finished difference. Result has 84 places, 104 transitions, 718 flow [2023-11-17 16:02:20,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=701, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=718, PETRI_PLACES=84, PETRI_TRANSITIONS=104} [2023-11-17 16:02:20,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2023-11-17 16:02:20,454 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 104 transitions, 718 flow [2023-11-17 16:02:20,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 457.3333333333333) internal successors, (1372), 3 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:20,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:20,454 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:20,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 16:02:20,455 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:20,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:20,455 INFO L85 PathProgramCache]: Analyzing trace with hash 733370289, now seen corresponding path program 1 times [2023-11-17 16:02:20,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:20,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304001693] [2023-11-17 16:02:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:20,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:23,185 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-17 16:02:23,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:23,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304001693] [2023-11-17 16:02:23,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304001693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:23,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:23,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-17 16:02:23,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081618520] [2023-11-17 16:02:23,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:23,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 16:02:23,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:23,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 16:02:23,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-17 16:02:23,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 1095 [2023-11-17 16:02:23,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 104 transitions, 718 flow. Second operand has 11 states, 11 states have (on average 375.6363636363636) internal successors, (4132), 11 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:23,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:23,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 1095 [2023-11-17 16:02:23,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:23,813 INFO L124 PetriNetUnfolderBase]: 277/529 cut-off events. [2023-11-17 16:02:23,813 INFO L125 PetriNetUnfolderBase]: For 599/599 co-relation queries the response was YES. [2023-11-17 16:02:23,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 529 events. 277/529 cut-off events. For 599/599 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1718 event pairs, 76 based on Foata normal form. 14/426 useless extension candidates. Maximal degree in co-relation 1942. Up to 298 conditions per place. [2023-11-17 16:02:23,817 INFO L140 encePairwiseOnDemand]: 1089/1095 looper letters, 117 selfloop transitions, 4 changer transitions 1/122 dead transitions. [2023-11-17 16:02:23,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 122 transitions, 1045 flow [2023-11-17 16:02:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:02:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:02:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1921 transitions. [2023-11-17 16:02:23,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3508675799086758 [2023-11-17 16:02:23,820 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1921 transitions. [2023-11-17 16:02:23,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1921 transitions. [2023-11-17 16:02:23,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:23,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1921 transitions. [2023-11-17 16:02:23,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 384.2) internal successors, (1921), 5 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:23,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:23,825 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:23,825 INFO L175 Difference]: Start difference. First operand has 84 places, 104 transitions, 718 flow. Second operand 5 states and 1921 transitions. [2023-11-17 16:02:23,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 122 transitions, 1045 flow [2023-11-17 16:02:23,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 122 transitions, 1040 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:02:23,829 INFO L231 Difference]: Finished difference. Result has 89 places, 104 transitions, 728 flow [2023-11-17 16:02:23,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=728, PETRI_PLACES=89, PETRI_TRANSITIONS=104} [2023-11-17 16:02:23,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2023-11-17 16:02:23,830 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 104 transitions, 728 flow [2023-11-17 16:02:23,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 375.6363636363636) internal successors, (4132), 11 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:23,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:23,831 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:23,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 16:02:23,831 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:23,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1091821092, now seen corresponding path program 1 times [2023-11-17 16:02:23,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:23,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246888611] [2023-11-17 16:02:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:23,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-17 16:02:24,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:24,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246888611] [2023-11-17 16:02:24,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246888611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:24,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:24,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:02:24,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802855224] [2023-11-17 16:02:24,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:24,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:02:24,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:24,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:02:24,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:02:24,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 1095 [2023-11-17 16:02:24,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 104 transitions, 728 flow. Second operand has 6 states, 6 states have (on average 386.8333333333333) internal successors, (2321), 6 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:24,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:24,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 1095 [2023-11-17 16:02:24,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:25,019 INFO L124 PetriNetUnfolderBase]: 223/433 cut-off events. [2023-11-17 16:02:25,019 INFO L125 PetriNetUnfolderBase]: For 725/725 co-relation queries the response was YES. [2023-11-17 16:02:25,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 433 events. 223/433 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1282 event pairs, 60 based on Foata normal form. 16/376 useless extension candidates. Maximal degree in co-relation 1579. Up to 246 conditions per place. [2023-11-17 16:02:25,022 INFO L140 encePairwiseOnDemand]: 1089/1095 looper letters, 113 selfloop transitions, 4 changer transitions 1/118 dead transitions. [2023-11-17 16:02:25,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 118 transitions, 1024 flow [2023-11-17 16:02:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:02:25,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:02:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1963 transitions. [2023-11-17 16:02:25,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35853881278538813 [2023-11-17 16:02:25,025 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1963 transitions. [2023-11-17 16:02:25,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1963 transitions. [2023-11-17 16:02:25,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:25,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1963 transitions. [2023-11-17 16:02:25,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 392.6) internal successors, (1963), 5 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:25,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:25,031 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:25,031 INFO L175 Difference]: Start difference. First operand has 89 places, 104 transitions, 728 flow. Second operand 5 states and 1963 transitions. [2023-11-17 16:02:25,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 118 transitions, 1024 flow [2023-11-17 16:02:25,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 118 transitions, 1003 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-17 16:02:25,037 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 708 flow [2023-11-17 16:02:25,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=708, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2023-11-17 16:02:25,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2023-11-17 16:02:25,038 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 708 flow [2023-11-17 16:02:25,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 386.8333333333333) internal successors, (2321), 6 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:25,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:25,038 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:25,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 16:02:25,039 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:25,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:25,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1765067511, now seen corresponding path program 1 times [2023-11-17 16:02:25,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:25,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132446435] [2023-11-17 16:02:25,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:25,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-17 16:02:25,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:25,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132446435] [2023-11-17 16:02:25,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132446435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:25,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:25,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:02:25,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063543743] [2023-11-17 16:02:25,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:25,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:02:25,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:25,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:02:25,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:02:25,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1095 [2023-11-17 16:02:25,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 708 flow. Second operand has 3 states, 3 states have (on average 458.0) internal successors, (1374), 3 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:25,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:25,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1095 [2023-11-17 16:02:25,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:25,550 INFO L124 PetriNetUnfolderBase]: 232/452 cut-off events. [2023-11-17 16:02:25,551 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-11-17 16:02:25,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 452 events. 232/452 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1347 event pairs, 87 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 1605. Up to 344 conditions per place. [2023-11-17 16:02:25,553 INFO L140 encePairwiseOnDemand]: 1092/1095 looper letters, 112 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-11-17 16:02:25,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 115 transitions, 989 flow [2023-11-17 16:02:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:02:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:02:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1393 transitions. [2023-11-17 16:02:25,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42404870624048707 [2023-11-17 16:02:25,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1393 transitions. [2023-11-17 16:02:25,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1393 transitions. [2023-11-17 16:02:25,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:25,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1393 transitions. [2023-11-17 16:02:25,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 464.3333333333333) internal successors, (1393), 3 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:25,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:25,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:25,558 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 708 flow. Second operand 3 states and 1393 transitions. [2023-11-17 16:02:25,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 115 transitions, 989 flow [2023-11-17 16:02:25,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 115 transitions, 978 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 16:02:25,561 INFO L231 Difference]: Finished difference. Result has 87 places, 103 transitions, 709 flow [2023-11-17 16:02:25,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=709, PETRI_PLACES=87, PETRI_TRANSITIONS=103} [2023-11-17 16:02:25,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 57 predicate places. [2023-11-17 16:02:25,562 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 103 transitions, 709 flow [2023-11-17 16:02:25,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 458.0) internal successors, (1374), 3 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:25,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:25,562 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:25,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 16:02:25,562 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:25,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:25,563 INFO L85 PathProgramCache]: Analyzing trace with hash 741184522, now seen corresponding path program 1 times [2023-11-17 16:02:25,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:25,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988020341] [2023-11-17 16:02:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:25,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-11-17 16:02:25,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:25,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988020341] [2023-11-17 16:02:25,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988020341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:02:25,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:02:25,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 16:02:25,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827773933] [2023-11-17 16:02:25,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:02:25,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:02:25,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:02:25,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:02:25,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1095 [2023-11-17 16:02:25,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 103 transitions, 709 flow. Second operand has 7 states, 7 states have (on average 391.42857142857144) internal successors, (2740), 7 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:25,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:25,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1095 [2023-11-17 16:02:25,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:26,099 INFO L124 PetriNetUnfolderBase]: 152/320 cut-off events. [2023-11-17 16:02:26,099 INFO L125 PetriNetUnfolderBase]: For 431/431 co-relation queries the response was YES. [2023-11-17 16:02:26,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1267 conditions, 320 events. 152/320 cut-off events. For 431/431 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 780 event pairs, 52 based on Foata normal form. 14/291 useless extension candidates. Maximal degree in co-relation 1167. Up to 141 conditions per place. [2023-11-17 16:02:26,102 INFO L140 encePairwiseOnDemand]: 1089/1095 looper letters, 106 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2023-11-17 16:02:26,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 110 transitions, 948 flow [2023-11-17 16:02:26,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:02:26,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:02:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1983 transitions. [2023-11-17 16:02:26,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36219178082191783 [2023-11-17 16:02:26,104 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1983 transitions. [2023-11-17 16:02:26,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1983 transitions. [2023-11-17 16:02:26,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:26,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1983 transitions. [2023-11-17 16:02:26,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 396.6) internal successors, (1983), 5 states have internal predecessors, (1983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:26,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:26,109 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:26,109 INFO L175 Difference]: Start difference. First operand has 87 places, 103 transitions, 709 flow. Second operand 5 states and 1983 transitions. [2023-11-17 16:02:26,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 110 transitions, 948 flow [2023-11-17 16:02:26,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 110 transitions, 945 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:02:26,113 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 720 flow [2023-11-17 16:02:26,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2023-11-17 16:02:26,113 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2023-11-17 16:02:26,113 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 720 flow [2023-11-17 16:02:26,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 391.42857142857144) internal successors, (2740), 7 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:02:26,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:26,113 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:26,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 16:02:26,114 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:26,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1601257017, now seen corresponding path program 1 times [2023-11-17 16:02:26,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:26,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662321877] [2023-11-17 16:02:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:26,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-17 16:02:30,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:30,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662321877] [2023-11-17 16:02:30,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662321877] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:30,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477359612] [2023-11-17 16:02:30,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:30,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:30,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:30,808 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) [2023-11-17 16:02:30,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 16:02:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:31,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-17 16:02:31,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:34,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:02:34,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 61 [2023-11-17 16:02:34,368 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-11-17 16:02:34,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:02:38,902 INFO L349 Elim1Store]: treesize reduction 13, result has 97.8 percent of original size [2023-11-17 16:02:38,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 898 treesize of output 1186 [2023-11-17 16:03:46,546 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-17 16:03:46,548 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-17 16:03:46,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-11-17 16:03:46,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-17 16:03:46,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:46,750 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2023-11-17 16:03:46,752 INFO L158 Benchmark]: Toolchain (without parser) took 476461.29ms. Allocated memory was 169.9MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 125.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.2GB. Max. memory is 8.0GB. [2023-11-17 16:03:46,753 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 169.9MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:03:46,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.80ms. Allocated memory is still 169.9MB. Free memory was 124.9MB in the beginning and 104.3MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 16:03:46,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.48ms. Allocated memory is still 169.9MB. Free memory was 104.3MB in the beginning and 96.3MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2023-11-17 16:03:46,753 INFO L158 Benchmark]: Boogie Preprocessor took 147.37ms. Allocated memory is still 169.9MB. Free memory was 96.3MB in the beginning and 141.4MB in the end (delta: -45.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-11-17 16:03:46,753 INFO L158 Benchmark]: RCFGBuilder took 2439.42ms. Allocated memory was 169.9MB in the beginning and 251.7MB in the end (delta: 81.8MB). Free memory was 141.4MB in the beginning and 72.2MB in the end (delta: 69.2MB). Peak memory consumption was 149.9MB. Max. memory is 8.0GB. [2023-11-17 16:03:46,753 INFO L158 Benchmark]: TraceAbstraction took 473472.67ms. Allocated memory was 251.7MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 71.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-11-17 16:03:46,754 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 169.9MB. Free memory is still 128.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 278.80ms. Allocated memory is still 169.9MB. Free memory was 124.9MB in the beginning and 104.3MB in the end (delta: 20.6MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 117.48ms. Allocated memory is still 169.9MB. Free memory was 104.3MB in the beginning and 96.3MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 147.37ms. Allocated memory is still 169.9MB. Free memory was 96.3MB in the beginning and 141.4MB in the end (delta: -45.1MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * RCFGBuilder took 2439.42ms. Allocated memory was 169.9MB in the beginning and 251.7MB in the end (delta: 81.8MB). Free memory was 141.4MB in the beginning and 72.2MB in the end (delta: 69.2MB). Peak memory consumption was 149.9MB. Max. memory is 8.0GB. * TraceAbstraction took 473472.67ms. Allocated memory was 251.7MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 71.7MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 44.5s, 449 PlacesBefore, 30 PlacesAfterwards, 495 TransitionsBefore, 39 TransitionsAfterwards, 7952 CoEnabledTransitionPairs, 8 FixpointIterations, 324 TrivialSequentialCompositions, 119 ConcurrentSequentialCompositions, 82 TrivialYvCompositions, 27 ConcurrentYvCompositions, 37 ChoiceCompositions, 589 TotalNumberOfCompositions, 7711 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7464, independent: 7447, independent conditional: 0, independent unconditional: 7447, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5682, independent: 5667, independent conditional: 0, independent unconditional: 5667, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5682, independent: 5667, independent conditional: 0, independent unconditional: 5667, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 149, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 149, dependent conditional: 0, dependent unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7464, independent: 1780, independent conditional: 0, independent unconditional: 1780, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 5682, unknown conditional: 0, unknown unconditional: 5682] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...