/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 01:12:54,200 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 01:12:54,270 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-VariableLbe.epf [2023-08-24 01:12:54,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 01:12:54,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 01:12:54,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 01:12:54,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 01:12:54,310 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 01:12:54,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 01:12:54,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 01:12:54,314 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 01:12:54,314 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 01:12:54,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 01:12:54,316 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 01:12:54,316 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 01:12:54,316 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 01:12:54,316 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 01:12:54,317 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 01:12:54,317 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 01:12:54,317 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 01:12:54,317 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 01:12:54,318 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 01:12:54,318 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 01:12:54,318 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 01:12:54,319 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 01:12:54,319 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 01:12:54,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 01:12:54,319 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:12:54,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 01:12:54,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 01:12:54,321 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 01:12:54,321 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 01:12:54,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 01:12:54,321 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 01:12:54,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 01:12:54,322 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 01:12:54,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 01:12:54,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 01:12:54,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 01:12:54,687 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 01:12:54,687 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 01:12:54,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2023-08-24 01:12:55,923 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 01:12:56,163 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 01:12:56,163 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2023-08-24 01:12:56,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23818ae41/bc40cad3e92e42d89e2529b5a805af84/FLAG03bff187f [2023-08-24 01:12:56,191 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23818ae41/bc40cad3e92e42d89e2529b5a805af84 [2023-08-24 01:12:56,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 01:12:56,197 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 01:12:56,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 01:12:56,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 01:12:56,203 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 01:12:56,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ceff3f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56, skipping insertion in model container [2023-08-24 01:12:56,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,273 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 01:12:56,499 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[12821,12834] [2023-08-24 01:12:56,504 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:12:56,512 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 01:12:56,560 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[12821,12834] [2023-08-24 01:12:56,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:12:56,570 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 01:12:56,570 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 01:12:56,576 INFO L206 MainTranslator]: Completed translation [2023-08-24 01:12:56,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56 WrapperNode [2023-08-24 01:12:56,576 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 01:12:56,577 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 01:12:56,577 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 01:12:56,578 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 01:12:56,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,599 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,683 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1554 [2023-08-24 01:12:56,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 01:12:56,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 01:12:56,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 01:12:56,685 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 01:12:56,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,713 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,756 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,788 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,798 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 01:12:56,799 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 01:12:56,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 01:12:56,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 01:12:56,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (1/1) ... [2023-08-24 01:12:56,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:12:56,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:12:56,830 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) [2023-08-24 01:12:56,845 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 [2023-08-24 01:12:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 01:12:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 01:12:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 01:12:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 01:12:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 01:12:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 01:12:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 01:12:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 01:12:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 01:12:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 01:12:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 01:12:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 01:12:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 01:12:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 01:12:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 01:12:56,879 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 01:12:57,059 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 01:12:57,061 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 01:12:58,421 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 01:12:59,956 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 01:12:59,957 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-24 01:12:59,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:12:59 BoogieIcfgContainer [2023-08-24 01:12:59,962 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 01:12:59,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 01:12:59,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 01:12:59,967 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 01:12:59,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:12:56" (1/3) ... [2023-08-24 01:12:59,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12194e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:12:59, skipping insertion in model container [2023-08-24 01:12:59,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:12:56" (2/3) ... [2023-08-24 01:12:59,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12194e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:12:59, skipping insertion in model container [2023-08-24 01:12:59,968 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:12:59" (3/3) ... [2023-08-24 01:12:59,969 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2023-08-24 01:12:59,984 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 01:12:59,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 01:12:59,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 01:13:00,330 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 01:13:00,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 417 places, 463 transitions, 942 flow [2023-08-24 01:13:00,565 INFO L124 PetriNetUnfolderBase]: 53/461 cut-off events. [2023-08-24 01:13:00,565 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 01:13:00,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 461 events. 53/461 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 570 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 383. Up to 7 conditions per place. [2023-08-24 01:13:00,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 417 places, 463 transitions, 942 flow [2023-08-24 01:13:00,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 407 places, 453 transitions, 918 flow [2023-08-24 01:13:00,586 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 01:13:00,597 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 407 places, 453 transitions, 918 flow [2023-08-24 01:13:00,600 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 407 places, 453 transitions, 918 flow [2023-08-24 01:13:00,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 453 transitions, 918 flow [2023-08-24 01:13:00,684 INFO L124 PetriNetUnfolderBase]: 53/453 cut-off events. [2023-08-24 01:13:00,685 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 01:13:00,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 453 events. 53/453 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 574 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 383. Up to 7 conditions per place. [2023-08-24 01:13:00,691 INFO L119 LiptonReduction]: Number of co-enabled transitions 7700 [2023-08-24 01:13:53,767 INFO L134 LiptonReduction]: Checked pairs total: 7730 [2023-08-24 01:13:53,767 INFO L136 LiptonReduction]: Total number of compositions: 551 [2023-08-24 01:13:53,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 01:13:53,783 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=LoopsAndPotentialCycles, 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;@7ab09940, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 01:13:53,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 01:13:53,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 01:13:53,819 INFO L124 PetriNetUnfolderBase]: 16/38 cut-off events. [2023-08-24 01:13:53,819 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 01:13:53,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:53,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:13:53,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 01:13:53,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash -88223086, now seen corresponding path program 1 times [2023-08-24 01:13:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:53,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379882222] [2023-08-24 01:13:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:53,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:13:54,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:54,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379882222] [2023-08-24 01:13:54,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379882222] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:13:54,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:13:54,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 01:13:54,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066011055] [2023-08-24 01:13:54,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:13:54,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:13:54,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:13:54,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:13:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:13:54,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 1014 [2023-08-24 01:13:54,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:54,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:13:54,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 1014 [2023-08-24 01:13:54,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:54,946 INFO L124 PetriNetUnfolderBase]: 133/194 cut-off events. [2023-08-24 01:13:54,946 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 01:13:54,946 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 373 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. [2023-08-24 01:13:54,948 INFO L140 encePairwiseOnDemand]: 1009/1014 looper letters, 37 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2023-08-24 01:13:54,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 41 transitions, 176 flow [2023-08-24 01:13:54,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:13:54,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:13:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 976 transitions. [2023-08-24 01:13:54,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32084155161078237 [2023-08-24 01:13:54,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 976 transitions. [2023-08-24 01:13:54,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 976 transitions. [2023-08-24 01:13:54,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:54,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 976 transitions. [2023-08-24 01:13:54,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 325.3333333333333) internal successors, (976), 3 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:54,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:54,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:54,986 INFO L175 Difference]: Start difference. First operand has 30 places, 39 transitions, 90 flow. Second operand 3 states and 976 transitions. [2023-08-24 01:13:54,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 41 transitions, 176 flow [2023-08-24 01:13:54,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 168 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 01:13:54,991 INFO L231 Difference]: Finished difference. Result has 29 places, 41 transitions, 104 flow [2023-08-24 01:13:54,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, 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} [2023-08-24 01:13:54,995 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-24 01:13:54,995 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 41 transitions, 104 flow [2023-08-24 01:13:54,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.3333333333333) internal successors, (952), 3 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:54,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:54,996 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] [2023-08-24 01:13:54,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 01:13:54,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 01:13:54,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:54,997 INFO L85 PathProgramCache]: Analyzing trace with hash 749511618, now seen corresponding path program 1 times [2023-08-24 01:13:54,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:54,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785410962] [2023-08-24 01:13:54,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:54,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 01:13:55,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:55,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785410962] [2023-08-24 01:13:55,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785410962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:13:55,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:13:55,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:13:55,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510670389] [2023-08-24 01:13:55,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:13:55,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:13:55,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:13:55,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:13:55,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:13:55,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 1014 [2023-08-24 01:13:55,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 41 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:55,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:13:55,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 1014 [2023-08-24 01:13:55,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:55,589 INFO L124 PetriNetUnfolderBase]: 133/198 cut-off events. [2023-08-24 01:13:55,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 01:13:55,590 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 373 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. [2023-08-24 01:13:55,591 INFO L140 encePairwiseOnDemand]: 1005/1014 looper letters, 37 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2023-08-24 01:13:55,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 202 flow [2023-08-24 01:13:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:13:55,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:13:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 980 transitions. [2023-08-24 01:13:55,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32215647600262987 [2023-08-24 01:13:55,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 980 transitions. [2023-08-24 01:13:55,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 980 transitions. [2023-08-24 01:13:55,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:55,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 980 transitions. [2023-08-24 01:13:55,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:55,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:55,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:55,607 INFO L175 Difference]: Start difference. First operand has 29 places, 41 transitions, 104 flow. Second operand 3 states and 980 transitions. [2023-08-24 01:13:55,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 202 flow [2023-08-24 01:13:55,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 45 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 01:13:55,609 INFO L231 Difference]: Finished difference. Result has 31 places, 45 transitions, 142 flow [2023-08-24 01:13:55,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, 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} [2023-08-24 01:13:55,610 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-24 01:13:55,610 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 45 transitions, 142 flow [2023-08-24 01:13:55,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 318.0) internal successors, (954), 3 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:55,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:55,612 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] [2023-08-24 01:13:55,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 01:13:55,620 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 01:13:55,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash 532838978, now seen corresponding path program 1 times [2023-08-24 01:13:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:55,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18723673] [2023-08-24 01:13:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:55,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:13:55,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:55,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18723673] [2023-08-24 01:13:55,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18723673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:13:55,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:13:55,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:13:55,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200609156] [2023-08-24 01:13:55,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:13:55,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:13:55,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:13:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:13:55,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:13:55,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 1014 [2023-08-24 01:13:55,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 45 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:55,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:13:55,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 1014 [2023-08-24 01:13:55,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:56,230 INFO L124 PetriNetUnfolderBase]: 133/200 cut-off events. [2023-08-24 01:13:56,230 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 01:13:56,231 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 373 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. [2023-08-24 01:13:56,232 INFO L140 encePairwiseOnDemand]: 1009/1014 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-08-24 01:13:56,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 47 transitions, 240 flow [2023-08-24 01:13:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:13:56,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:13:56,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 976 transitions. [2023-08-24 01:13:56,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32084155161078237 [2023-08-24 01:13:56,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 976 transitions. [2023-08-24 01:13:56,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 976 transitions. [2023-08-24 01:13:56,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:56,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 976 transitions. [2023-08-24 01:13:56,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 325.3333333333333) internal successors, (976), 3 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:56,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:56,250 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1014.0) internal successors, (4056), 4 states have internal predecessors, (4056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:56,250 INFO L175 Difference]: Start difference. First operand has 31 places, 45 transitions, 142 flow. Second operand 3 states and 976 transitions. [2023-08-24 01:13:56,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 47 transitions, 240 flow [2023-08-24 01:13:56,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 47 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 01:13:56,252 INFO L231 Difference]: Finished difference. Result has 33 places, 47 transitions, 156 flow [2023-08-24 01:13:56,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, 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} [2023-08-24 01:13:56,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-24 01:13:56,253 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 47 transitions, 156 flow [2023-08-24 01:13:56,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.3333333333333) internal successors, (958), 3 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:56,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:56,254 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] [2023-08-24 01:13:56,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 01:13:56,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 01:13:56,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash -988637358, now seen corresponding path program 1 times [2023-08-24 01:13:56,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:56,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615706555] [2023-08-24 01:13:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:56,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:56,503 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 01:13:56,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615706555] [2023-08-24 01:13:56,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615706555] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:13:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194947664] [2023-08-24 01:13:56,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:56,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:13:56,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:13:56,506 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) [2023-08-24 01:13:56,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 01:13:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:57,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-24 01:13:57,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:13:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 01:13:57,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:13:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-24 01:13:57,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194947664] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:13:57,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:13:57,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-24 01:13:57,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9351939] [2023-08-24 01:13:57,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:13:57,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 01:13:57,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:13:57,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 01:13:57,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-24 01:13:57,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 1014 [2023-08-24 01:13:57,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 47 transitions, 156 flow. Second operand has 8 states, 8 states have (on average 315.125) internal successors, (2521), 8 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:57,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:13:57,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 1014 [2023-08-24 01:13:57,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:57,616 INFO L124 PetriNetUnfolderBase]: 133/216 cut-off events. [2023-08-24 01:13:57,616 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 01:13:57,617 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 373 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. [2023-08-24 01:13:57,617 INFO L140 encePairwiseOnDemand]: 997/1014 looper letters, 31 selfloop transitions, 32 changer transitions 0/63 dead transitions. [2023-08-24 01:13:57,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 63 transitions, 346 flow [2023-08-24 01:13:57,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 01:13:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 01:13:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2567 transitions. [2023-08-24 01:13:57,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3164447731755424 [2023-08-24 01:13:57,626 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2567 transitions. [2023-08-24 01:13:57,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2567 transitions. [2023-08-24 01:13:57,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:57,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2567 transitions. [2023-08-24 01:13:57,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 320.875) internal successors, (2567), 8 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:57,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1014.0) internal successors, (9126), 9 states have internal predecessors, (9126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:57,648 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1014.0) internal successors, (9126), 9 states have internal predecessors, (9126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:57,649 INFO L175 Difference]: Start difference. First operand has 33 places, 47 transitions, 156 flow. Second operand 8 states and 2567 transitions. [2023-08-24 01:13:57,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 63 transitions, 346 flow [2023-08-24 01:13:57,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 63 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 01:13:57,651 INFO L231 Difference]: Finished difference. Result has 42 places, 63 transitions, 338 flow [2023-08-24 01:13:57,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, 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} [2023-08-24 01:13:57,652 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2023-08-24 01:13:57,652 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 63 transitions, 338 flow [2023-08-24 01:13:57,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 315.125) internal successors, (2521), 8 states have internal predecessors, (2521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:57,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:13:57,654 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] [2023-08-24 01:13:57,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 01:13:57,863 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 [2023-08-24 01:13:57,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 01:13:57,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:13:57,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1649003482, now seen corresponding path program 2 times [2023-08-24 01:13:57,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:13:57,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702739853] [2023-08-24 01:13:57,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:13:57,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:13:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:13:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-08-24 01:13:58,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:13:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702739853] [2023-08-24 01:13:58,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702739853] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:13:58,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439959236] [2023-08-24 01:13:58,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 01:13:58,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:13:58,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:13:58,180 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) [2023-08-24 01:13:58,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 01:13:58,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 01:13:58,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:13:58,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 01:13:58,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:14:02,868 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:14:02,869 INFO L351 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 1426 treesize of output 1252 [2023-08-24 01:14:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-08-24 01:14:32,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:14:32,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439959236] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:14:32,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:14:32,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-08-24 01:14:32,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300970693] [2023-08-24 01:14:32,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:14:32,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:14:32,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:14:32,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:14:32,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-24 01:14:32,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 1014 [2023-08-24 01:14:32,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 63 transitions, 338 flow. Second operand has 4 states, 4 states have (on average 384.75) internal successors, (1539), 4 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:14:32,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:14:32,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 1014 [2023-08-24 01:14:32,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:14:33,499 INFO L124 PetriNetUnfolderBase]: 220/348 cut-off events. [2023-08-24 01:14:33,499 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 01:14:33,500 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 888 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. [2023-08-24 01:14:33,501 INFO L140 encePairwiseOnDemand]: 999/1014 looper letters, 77 selfloop transitions, 13 changer transitions 6/96 dead transitions. [2023-08-24 01:14:33,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 96 transitions, 602 flow [2023-08-24 01:14:33,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:14:33,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:14:33,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1965 transitions. [2023-08-24 01:14:33,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875739644970414 [2023-08-24 01:14:33,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1965 transitions. [2023-08-24 01:14:33,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1965 transitions. [2023-08-24 01:14:33,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:14:33,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1965 transitions. [2023-08-24 01:14:33,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 393.0) internal successors, (1965), 5 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:14:33,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1014.0) internal successors, (6084), 6 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:14:33,519 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1014.0) internal successors, (6084), 6 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:14:33,519 INFO L175 Difference]: Start difference. First operand has 42 places, 63 transitions, 338 flow. Second operand 5 states and 1965 transitions. [2023-08-24 01:14:33,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 96 transitions, 602 flow [2023-08-24 01:14:33,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 96 transitions, 552 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-24 01:14:33,526 INFO L231 Difference]: Finished difference. Result has 46 places, 74 transitions, 378 flow [2023-08-24 01:14:33,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, 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} [2023-08-24 01:14:33,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2023-08-24 01:14:33,527 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 74 transitions, 378 flow [2023-08-24 01:14:33,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 384.75) internal successors, (1539), 4 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:14:33,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:14:33,528 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] [2023-08-24 01:14:33,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 01:14:33,736 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 [2023-08-24 01:14:33,736 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 01:14:33,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:14:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1739042902, now seen corresponding path program 3 times [2023-08-24 01:14:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:14:33,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072076129] [2023-08-24 01:14:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:14:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:14:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:14:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-08-24 01:14:34,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:14:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072076129] [2023-08-24 01:14:34,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072076129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:14:34,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439914053] [2023-08-24 01:14:34,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 01:14:34,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:14:34,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:14:34,159 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) [2023-08-24 01:14:34,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 01:14:34,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 01:14:34,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:14:34,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 01:14:34,760 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:14:37,289 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 01:14:37,289 INFO L351 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 1429 treesize of output 1255 [2023-08-24 01:15:07,008 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-08-24 01:15:07,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:15:07,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439914053] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:07,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:15:07,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-08-24 01:15:07,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374136188] [2023-08-24 01:15:07,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:07,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:15:07,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:07,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:15:07,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-24 01:15:07,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 1014 [2023-08-24 01:15:07,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 74 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 384.75) internal successors, (1539), 4 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:07,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:07,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 1014 [2023-08-24 01:15:07,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:07,663 INFO L124 PetriNetUnfolderBase]: 222/362 cut-off events. [2023-08-24 01:15:07,663 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-08-24 01:15:07,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 362 events. 222/362 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 964 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. [2023-08-24 01:15:07,666 INFO L140 encePairwiseOnDemand]: 1000/1014 looper letters, 78 selfloop transitions, 12 changer transitions 5/95 dead transitions. [2023-08-24 01:15:07,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 95 transitions, 634 flow [2023-08-24 01:15:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:07,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:15:07,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1963 transitions. [2023-08-24 01:15:07,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3871794871794872 [2023-08-24 01:15:07,677 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1963 transitions. [2023-08-24 01:15:07,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1963 transitions. [2023-08-24 01:15:07,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:07,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1963 transitions. [2023-08-24 01:15:07,681 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) [2023-08-24 01:15:07,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1014.0) internal successors, (6084), 6 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:07,688 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1014.0) internal successors, (6084), 6 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:07,688 INFO L175 Difference]: Start difference. First operand has 46 places, 74 transitions, 378 flow. Second operand 5 states and 1963 transitions. [2023-08-24 01:15:07,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 95 transitions, 634 flow [2023-08-24 01:15:07,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 95 transitions, 630 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 01:15:07,692 INFO L231 Difference]: Finished difference. Result has 50 places, 74 transitions, 410 flow [2023-08-24 01:15:07,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, 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} [2023-08-24 01:15:07,693 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2023-08-24 01:15:07,693 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 74 transitions, 410 flow [2023-08-24 01:15:07,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 384.75) internal successors, (1539), 4 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:07,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:07,694 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] [2023-08-24 01:15:07,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-24 01:15:07,902 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 [2023-08-24 01:15:07,902 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 01:15:07,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:07,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1959833276, now seen corresponding path program 4 times [2023-08-24 01:15:07,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:07,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372838594] [2023-08-24 01:15:07,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:07,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-08-24 01:15:08,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372838594] [2023-08-24 01:15:08,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372838594] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899431588] [2023-08-24 01:15:08,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 01:15:08,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:08,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:08,249 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) [2023-08-24 01:15:08,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 01:15:08,899 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 01:15:08,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 01:15:08,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 01:15:08,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:15:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-08-24 01:15:08,970 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:15:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-08-24 01:15:09,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899431588] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:15:09,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:15:09,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-24 01:15:09,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325105072] [2023-08-24 01:15:09,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:15:09,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 01:15:09,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:09,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 01:15:09,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=156, Unknown=0, NotChecked=0, Total=272 [2023-08-24 01:15:09,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 1014 [2023-08-24 01:15:09,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 74 transitions, 410 flow. Second operand has 17 states, 17 states have (on average 314.1764705882353) internal successors, (5341), 17 states have internal predecessors, (5341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:09,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:09,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 1014 [2023-08-24 01:15:09,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:15:09,571 INFO L124 PetriNetUnfolderBase]: 221/378 cut-off events. [2023-08-24 01:15:09,571 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2023-08-24 01:15:09,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 378 events. 221/378 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 896 event pairs, 69 based on Foata normal form. 15/283 useless extension candidates. Maximal degree in co-relation 1295. Up to 333 conditions per place. [2023-08-24 01:15:09,573 INFO L140 encePairwiseOnDemand]: 997/1014 looper letters, 42 selfloop transitions, 54 changer transitions 0/96 dead transitions. [2023-08-24 01:15:09,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 730 flow [2023-08-24 01:15:09,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 01:15:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 01:15:09,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5394 transitions. [2023-08-24 01:15:09,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31291333101287855 [2023-08-24 01:15:09,584 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5394 transitions. [2023-08-24 01:15:09,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5394 transitions. [2023-08-24 01:15:09,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:15:09,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5394 transitions. [2023-08-24 01:15:09,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 317.29411764705884) internal successors, (5394), 17 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:09,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1014.0) internal successors, (18252), 18 states have internal predecessors, (18252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:09,617 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1014.0) internal successors, (18252), 18 states have internal predecessors, (18252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:09,617 INFO L175 Difference]: Start difference. First operand has 50 places, 74 transitions, 410 flow. Second operand 17 states and 5394 transitions. [2023-08-24 01:15:09,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 730 flow [2023-08-24 01:15:09,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 96 transitions, 717 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 01:15:09,621 INFO L231 Difference]: Finished difference. Result has 70 places, 96 transitions, 721 flow [2023-08-24 01:15:09,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1014, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=721, PETRI_PLACES=70, PETRI_TRANSITIONS=96} [2023-08-24 01:15:09,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-08-24 01:15:09,622 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 96 transitions, 721 flow [2023-08-24 01:15:09,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 314.1764705882353) internal successors, (5341), 17 states have internal predecessors, (5341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:09,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:09,623 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 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] [2023-08-24 01:15:09,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 01:15:09,832 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 [2023-08-24 01:15:09,832 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 01:15:09,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash 775272074, now seen corresponding path program 5 times [2023-08-24 01:15:09,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:09,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902135892] [2023-08-24 01:15:09,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:09,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-08-24 01:15:10,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:10,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902135892] [2023-08-24 01:15:10,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902135892] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:15:10,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255382594] [2023-08-24 01:15:10,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 01:15:10,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:15:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:15:10,501 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) [2023-08-24 01:15:10,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-08-24 01:27:03,195 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 01:27:03,195 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 01:27:04,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-24 01:27:04,396 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-24 01:27:04,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-24 01:27:04,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 01:27:04,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:27:04,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-08-24 01:27:04,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252519451] [2023-08-24 01:27:04,438 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-24 01:27:04,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 01:27:04,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:27:04,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 01:27:04,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-24 01:27:04,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 1014 [2023-08-24 01:27:04,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 96 transitions, 721 flow. Second operand has 13 states, 13 states have (on average 313.7692307692308) internal successors, (4079), 13 states have internal predecessors, (4079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:27:04,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:27:04,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 1014 [2023-08-24 01:27:04,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:27:04,444 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 01:27:04,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 01:27:04,445 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 01:27:04,446 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 01:27:04,446 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 01:27:04,446 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1] [2023-08-24 01:27:04,448 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 01:27:04,448 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 01:27:04,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:27:04 BasicIcfg [2023-08-24 01:27:04,450 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 01:27:04,451 INFO L158 Benchmark]: Toolchain (without parser) took 848254.10ms. Allocated memory was 383.8MB in the beginning and 1.8GB in the end (delta: 1.4GB). Free memory was 334.2MB in the beginning and 1.7GB in the end (delta: -1.3GB). Peak memory consumption was 69.5MB. Max. memory is 16.0GB. [2023-08-24 01:27:04,451 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory was 359.8MB in the beginning and 359.7MB in the end (delta: 84.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:27:04,452 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.98ms. Allocated memory is still 383.8MB. Free memory was 334.0MB in the beginning and 342.5MB in the end (delta: -8.5MB). Peak memory consumption was 6.1MB. Max. memory is 16.0GB. [2023-08-24 01:27:04,453 INFO L158 Benchmark]: Boogie Procedure Inliner took 106.78ms. Allocated memory is still 383.8MB. Free memory was 342.5MB in the beginning and 334.6MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2023-08-24 01:27:04,455 INFO L158 Benchmark]: Boogie Preprocessor took 113.12ms. Allocated memory is still 383.8MB. Free memory was 334.6MB in the beginning and 327.6MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. [2023-08-24 01:27:04,457 INFO L158 Benchmark]: RCFGBuilder took 3162.85ms. Allocated memory was 383.8MB in the beginning and 520.1MB in the end (delta: 136.3MB). Free memory was 327.6MB in the beginning and 229.9MB in the end (delta: 97.7MB). Peak memory consumption was 286.8MB. Max. memory is 16.0GB. [2023-08-24 01:27:04,457 INFO L158 Benchmark]: TraceAbstraction took 844486.33ms. Allocated memory was 520.1MB in the beginning and 1.8GB in the end (delta: 1.3GB). Free memory was 228.9MB in the beginning and 1.7GB in the end (delta: -1.5GB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:27:04,459 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 383.8MB. Free memory was 359.8MB in the beginning and 359.7MB in the end (delta: 84.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 375.98ms. Allocated memory is still 383.8MB. Free memory was 334.0MB in the beginning and 342.5MB in the end (delta: -8.5MB). Peak memory consumption was 6.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 106.78ms. Allocated memory is still 383.8MB. Free memory was 342.5MB in the beginning and 334.6MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * Boogie Preprocessor took 113.12ms. Allocated memory is still 383.8MB. Free memory was 334.6MB in the beginning and 327.6MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.0GB. * RCFGBuilder took 3162.85ms. Allocated memory was 383.8MB in the beginning and 520.1MB in the end (delta: 136.3MB). Free memory was 327.6MB in the beginning and 229.9MB in the end (delta: 97.7MB). Peak memory consumption was 286.8MB. Max. memory is 16.0GB. * TraceAbstraction took 844486.33ms. Allocated memory was 520.1MB in the beginning and 1.8GB in the end (delta: 1.3GB). Free memory was 228.9MB in the beginning and 1.7GB in the end (delta: -1.5GB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 53.2s, 407 PlacesBefore, 30 PlacesAfterwards, 453 TransitionsBefore, 39 TransitionsAfterwards, 7700 CoEnabledTransitionPairs, 8 FixpointIterations, 284 TrivialSequentialCompositions, 122 ConcurrentSequentialCompositions, 82 TrivialYvCompositions, 26 ConcurrentYvCompositions, 37 ChoiceCompositions, 551 TotalNumberOfCompositions, 7730 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7424, independent: 7407, independent conditional: 0, independent unconditional: 7407, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4352, independent: 4338, independent conditional: 0, independent unconditional: 4338, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7424, independent: 3069, independent conditional: 0, independent unconditional: 3069, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 4352, unknown conditional: 0, unknown unconditional: 4352] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 31, Positive conditional cache size: 0, Positive unconditional cache size: 31, 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 - TimeoutResultAtElement [Line: 235]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 229]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 230]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 505 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 844.1s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 53.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 137 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 878 IncrementalHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 137 mSolverCounterUnsat, 0 mSDtfsCounter, 878 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 264 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=721occurred in iteration=7, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 68.8s InterpolantComputationTime, 442 NumberOfCodeBlocks, 394 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 498 ConstructedInterpolants, 0 QuantifiedInterpolants, 2139 SizeOfPredicates, 64 NumberOfNonLiveVariables, 1744 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 482/576 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown