/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_unsafe-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:09:52,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:09:53,066 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:09:53,090 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:09:53,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:09:53,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:09:53,092 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:09:53,092 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:09:53,092 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:09:53,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:09:53,096 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:09:53,096 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:09:53,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:09:53,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:09:53,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:09:53,098 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:09:53,098 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:09:53,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:09:53,098 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:09:53,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:09:53,099 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:09:53,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:09:53,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:09:53,099 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:09:53,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:09:53,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:09:53,101 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:09:53,101 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:09:53,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:09:53,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:09:53,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:09:53,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:09:53,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:09:53,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:09:53,330 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:09:53,332 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:09:53,333 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:09:53,333 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:09:53,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-5.i [2023-11-17 11:09:54,499 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:09:54,686 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:09:54,687 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-5.i [2023-11-17 11:09:54,697 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88745c09a/33ddef148a504fe0bd226fd776bb89b2/FLAGfb260449e [2023-11-17 11:09:54,709 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88745c09a/33ddef148a504fe0bd226fd776bb89b2 [2023-11-17 11:09:54,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:09:54,712 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:09:54,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:09:54,713 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:09:54,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:09:54,716 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:09:54" (1/1) ... [2023-11-17 11:09:54,717 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47bab509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:54, skipping insertion in model container [2023-11-17 11:09:54,717 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:09:54" (1/1) ... [2023-11-17 11:09:54,763 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:09:55,004 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-5.i[30243,30256] [2023-11-17 11:09:55,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:09:55,040 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:09:55,071 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-5.i[30243,30256] [2023-11-17 11:09:55,086 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:09:55,111 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:09:55,111 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:09:55,131 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:09:55,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55 WrapperNode [2023-11-17 11:09:55,132 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:09:55,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:09:55,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:09:55,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:09:55,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,177 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-11-17 11:09:55,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:09:55,178 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:09:55,178 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:09:55,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:09:55,185 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,203 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,208 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:09:55,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:09:55,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:09:55,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:09:55,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (1/1) ... [2023-11-17 11:09:55,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:09:55,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:09:55,255 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:09:55,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:09:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 11:09:55,282 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 11:09:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 11:09:55,282 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 11:09:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:09:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:09:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:09:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:09:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:09:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:09:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:09:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:09:55,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:09:55,285 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:09:55,408 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:09:55,409 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:09:55,528 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:09:55,638 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:09:55,639 INFO L307 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-17 11:09:55,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:09:55 BoogieIcfgContainer [2023-11-17 11:09:55,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:09:55,641 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:09:55,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:09:55,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:09:55,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:09:54" (1/3) ... [2023-11-17 11:09:55,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5288ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:09:55, skipping insertion in model container [2023-11-17 11:09:55,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:09:55" (2/3) ... [2023-11-17 11:09:55,644 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5288ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:09:55, skipping insertion in model container [2023-11-17 11:09:55,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:09:55" (3/3) ... [2023-11-17 11:09:55,646 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2023-11-17 11:09:55,657 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:09:55,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:09:55,658 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:09:55,683 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:09:55,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 66 flow [2023-11-17 11:09:55,722 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2023-11-17 11:09:55,722 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:09:55,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-11-17 11:09:55,741 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 66 flow [2023-11-17 11:09:55,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 27 transitions, 60 flow [2023-11-17 11:09:55,746 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:09:55,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 30 places, 27 transitions, 60 flow [2023-11-17 11:09:55,762 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 30 places, 27 transitions, 60 flow [2023-11-17 11:09:55,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 30 places, 27 transitions, 60 flow [2023-11-17 11:09:55,779 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2023-11-17 11:09:55,779 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:09:55,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 4/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2023-11-17 11:09:55,781 INFO L119 LiptonReduction]: Number of co-enabled transitions 270 [2023-11-17 11:09:57,070 INFO L134 LiptonReduction]: Checked pairs total: 210 [2023-11-17 11:09:57,070 INFO L136 LiptonReduction]: Total number of compositions: 18 [2023-11-17 11:09:57,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:09:57,097 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7621d93e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:09:57,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:09:57,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:09:57,100 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2023-11-17 11:09:57,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:09:57,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:09:57,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:09:57,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:09:57,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:09:57,105 INFO L85 PathProgramCache]: Analyzing trace with hash -146274990, now seen corresponding path program 1 times [2023-11-17 11:09:57,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:09:57,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989914411] [2023-11-17 11:09:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:09:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:09:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:09:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:09:57,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989914411] [2023-11-17 11:09:57,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989914411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:09:57,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:09:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:09:57,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030413288] [2023-11-17 11:09:57,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:09:57,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:09:57,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:09:57,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:09:57,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:09:57,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2023-11-17 11:09:57,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:57,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:09:57,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2023-11-17 11:09:57,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:09:57,440 INFO L124 PetriNetUnfolderBase]: 97/149 cut-off events. [2023-11-17 11:09:57,440 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:09:57,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 149 events. 97/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 323 event pairs, 20 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 300. Up to 91 conditions per place. [2023-11-17 11:09:57,444 INFO L140 encePairwiseOnDemand]: 43/47 looper letters, 18 selfloop transitions, 2 changer transitions 1/21 dead transitions. [2023-11-17 11:09:57,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 21 transitions, 90 flow [2023-11-17 11:09:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:09:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:09:57,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2023-11-17 11:09:57,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843971631205673 [2023-11-17 11:09:57,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 59 transitions. [2023-11-17 11:09:57,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 59 transitions. [2023-11-17 11:09:57,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:09:57,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 59 transitions. [2023-11-17 11:09:57,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:57,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:57,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:57,463 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 3 states and 59 transitions. [2023-11-17 11:09:57,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 21 transitions, 90 flow [2023-11-17 11:09:57,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 88 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:09:57,466 INFO L231 Difference]: Finished difference. Result has 19 places, 14 transitions, 42 flow [2023-11-17 11:09:57,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=19, PETRI_TRANSITIONS=14} [2023-11-17 11:09:57,470 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-11-17 11:09:57,471 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 14 transitions, 42 flow [2023-11-17 11:09:57,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:57,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:09:57,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:09:57,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:09:57,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:09:57,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:09:57,474 INFO L85 PathProgramCache]: Analyzing trace with hash -239558132, now seen corresponding path program 1 times [2023-11-17 11:09:57,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:09:57,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582590025] [2023-11-17 11:09:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:09:57,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:09:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:09:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:57,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:09:57,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582590025] [2023-11-17 11:09:57,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582590025] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:09:57,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747154110] [2023-11-17 11:09:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:09:57,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:09:57,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:09:57,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:09:57,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 11:09:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:09:57,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 11:09:57,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:09:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:57,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:09:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:57,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747154110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:09:57,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:09:57,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-17 11:09:57,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722418505] [2023-11-17 11:09:57,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:09:57,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:09:57,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:09:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:09:57,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:09:57,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2023-11-17 11:09:57,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 14 transitions, 42 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:57,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:09:57,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2023-11-17 11:09:57,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:09:57,776 INFO L124 PetriNetUnfolderBase]: 133/203 cut-off events. [2023-11-17 11:09:57,777 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:09:57,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 203 events. 133/203 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 442 event pairs, 20 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 471. Up to 64 conditions per place. [2023-11-17 11:09:57,778 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 36 selfloop transitions, 5 changer transitions 0/41 dead transitions. [2023-11-17 11:09:57,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 41 transitions, 184 flow [2023-11-17 11:09:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:09:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:09:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2023-11-17 11:09:57,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41134751773049644 [2023-11-17 11:09:57,780 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 116 transitions. [2023-11-17 11:09:57,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 116 transitions. [2023-11-17 11:09:57,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:09:57,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 116 transitions. [2023-11-17 11:09:57,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:57,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:57,782 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 47.0) internal successors, (329), 7 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:57,782 INFO L175 Difference]: Start difference. First operand has 19 places, 14 transitions, 42 flow. Second operand 6 states and 116 transitions. [2023-11-17 11:09:57,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 41 transitions, 184 flow [2023-11-17 11:09:57,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 41 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:09:57,783 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 76 flow [2023-11-17 11:09:57,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-11-17 11:09:57,784 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 7 predicate places. [2023-11-17 11:09:57,784 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 76 flow [2023-11-17 11:09:57,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:57,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:09:57,785 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-17 11:09:57,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 11:09:57,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:09:57,991 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:09:57,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:09:57,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1558602706, now seen corresponding path program 2 times [2023-11-17 11:09:57,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:09:57,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683917258] [2023-11-17 11:09:57,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:09:57,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:09:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:09:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:58,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:09:58,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683917258] [2023-11-17 11:09:58,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683917258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:09:58,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783480454] [2023-11-17 11:09:58,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:09:58,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:09:58,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:09:58,089 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:09:58,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 11:09:58,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:09:58,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:09:58,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 11:09:58,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:09:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:58,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:09:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:58,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783480454] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:09:58,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:09:58,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-17 11:09:58,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733109433] [2023-11-17 11:09:58,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:09:58,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 11:09:58,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:09:58,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 11:09:58,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:09:58,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2023-11-17 11:09:58,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 76 flow. Second operand has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 13 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:58,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:09:58,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2023-11-17 11:09:58,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:09:58,337 INFO L124 PetriNetUnfolderBase]: 241/365 cut-off events. [2023-11-17 11:09:58,337 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-11-17 11:09:58,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 365 events. 241/365 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 841 event pairs, 20 based on Foata normal form. 54/339 useless extension candidates. Maximal degree in co-relation 993. Up to 109 conditions per place. [2023-11-17 11:09:58,340 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 72 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2023-11-17 11:09:58,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 83 transitions, 398 flow [2023-11-17 11:09:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 11:09:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 11:09:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2023-11-17 11:09:58,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41312056737588654 [2023-11-17 11:09:58,342 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 233 transitions. [2023-11-17 11:09:58,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 233 transitions. [2023-11-17 11:09:58,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:09:58,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 233 transitions. [2023-11-17 11:09:58,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 19.416666666666668) internal successors, (233), 12 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:58,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:58,345 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 47.0) internal successors, (611), 13 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:58,345 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 76 flow. Second operand 12 states and 233 transitions. [2023-11-17 11:09:58,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 83 transitions, 398 flow [2023-11-17 11:09:58,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 83 transitions, 384 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 11:09:58,348 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 146 flow [2023-11-17 11:09:58,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=146, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2023-11-17 11:09:58,349 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 23 predicate places. [2023-11-17 11:09:58,349 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 146 flow [2023-11-17 11:09:58,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 13 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:58,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:09:58,349 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-11-17 11:09:58,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-17 11:09:58,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-17 11:09:58,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:09:58,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:09:58,556 INFO L85 PathProgramCache]: Analyzing trace with hash -254158446, now seen corresponding path program 3 times [2023-11-17 11:09:58,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:09:58,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711307228] [2023-11-17 11:09:58,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:09:58,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:09:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:09:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:58,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:09:58,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711307228] [2023-11-17 11:09:58,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711307228] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:09:58,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669701491] [2023-11-17 11:09:58,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:09:58,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:09:58,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:09:58,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:09:58,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 11:09:58,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-17 11:09:58,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:09:58,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 11:09:58,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:09:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:58,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:09:58,990 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:58,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669701491] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:09:58,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:09:58,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2023-11-17 11:09:58,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786415826] [2023-11-17 11:09:58,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:09:58,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 11:09:58,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:09:58,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 11:09:58,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2023-11-17 11:09:58,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2023-11-17 11:09:58,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 146 flow. Second operand has 15 states, 15 states have (on average 13.4) internal successors, (201), 15 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:58,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:09:58,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2023-11-17 11:09:58,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:09:59,110 INFO L124 PetriNetUnfolderBase]: 277/419 cut-off events. [2023-11-17 11:09:59,111 INFO L125 PetriNetUnfolderBase]: For 963/963 co-relation queries the response was YES. [2023-11-17 11:09:59,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330 conditions, 419 events. 277/419 cut-off events. For 963/963 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 973 event pairs, 20 based on Foata normal form. 18/345 useless extension candidates. Maximal degree in co-relation 1308. Up to 100 conditions per place. [2023-11-17 11:09:59,114 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 84 selfloop transitions, 13 changer transitions 0/97 dead transitions. [2023-11-17 11:09:59,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 97 transitions, 500 flow [2023-11-17 11:09:59,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 11:09:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 11:09:59,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 267 transitions. [2023-11-17 11:09:59,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40577507598784196 [2023-11-17 11:09:59,115 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 267 transitions. [2023-11-17 11:09:59,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 267 transitions. [2023-11-17 11:09:59,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:09:59,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 267 transitions. [2023-11-17 11:09:59,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 19.071428571428573) internal successors, (267), 14 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:59,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 47.0) internal successors, (705), 15 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:59,118 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 47.0) internal successors, (705), 15 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:59,118 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 146 flow. Second operand 14 states and 267 transitions. [2023-11-17 11:09:59,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 97 transitions, 500 flow [2023-11-17 11:09:59,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 97 transitions, 448 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-11-17 11:09:59,122 INFO L231 Difference]: Finished difference. Result has 51 places, 25 transitions, 146 flow [2023-11-17 11:09:59,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=146, PETRI_PLACES=51, PETRI_TRANSITIONS=25} [2023-11-17 11:09:59,123 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 33 predicate places. [2023-11-17 11:09:59,123 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 25 transitions, 146 flow [2023-11-17 11:09:59,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.4) internal successors, (201), 15 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:09:59,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:09:59,124 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 1, 1, 1, 1, 1, 1] [2023-11-17 11:09:59,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 11:09:59,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:09:59,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:09:59,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:09:59,330 INFO L85 PathProgramCache]: Analyzing trace with hash 566845650, now seen corresponding path program 4 times [2023-11-17 11:09:59,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:09:59,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986777196] [2023-11-17 11:09:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:09:59,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:09:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:09:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:09:59,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:09:59,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986777196] [2023-11-17 11:09:59,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986777196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:09:59,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631275696] [2023-11-17 11:09:59,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:09:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:09:59,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:09:59,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:09:59,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 11:10:00,030 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:10:00,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:10:00,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-17 11:10:00,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:10:00,532 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:10:00,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:10:01,002 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:10:01,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631275696] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:10:01,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:10:01,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2023-11-17 11:10:01,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726081378] [2023-11-17 11:10:01,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:10:01,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-17 11:10:01,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:10:01,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-17 11:10:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1330, Unknown=0, NotChecked=0, Total=1640 [2023-11-17 11:10:01,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 47 [2023-11-17 11:10:01,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 25 transitions, 146 flow. Second operand has 41 states, 41 states have (on average 8.317073170731707) internal successors, (341), 41 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:10:01,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:10:01,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 47 [2023-11-17 11:10:01,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:10:07,217 INFO L124 PetriNetUnfolderBase]: 12587/18888 cut-off events. [2023-11-17 11:10:07,217 INFO L125 PetriNetUnfolderBase]: For 54254/54254 co-relation queries the response was YES. [2023-11-17 11:10:07,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59602 conditions, 18888 events. 12587/18888 cut-off events. For 54254/54254 co-relation queries the response was YES. Maximal size of possible extension queue 689. Compared 116262 event pairs, 65 based on Foata normal form. 113/14295 useless extension candidates. Maximal degree in co-relation 59578. Up to 3940 conditions per place. [2023-11-17 11:10:07,351 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 529 selfloop transitions, 901 changer transitions 0/1430 dead transitions. [2023-11-17 11:10:07,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 1430 transitions, 11091 flow [2023-11-17 11:10:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-11-17 11:10:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2023-11-17 11:10:07,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 1587 transitions. [2023-11-17 11:10:07,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.318546768366118 [2023-11-17 11:10:07,359 INFO L72 ComplementDD]: Start complementDD. Operand 106 states and 1587 transitions. [2023-11-17 11:10:07,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 1587 transitions. [2023-11-17 11:10:07,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:10:07,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 106 states and 1587 transitions. [2023-11-17 11:10:07,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 107 states, 106 states have (on average 14.971698113207546) internal successors, (1587), 106 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:10:07,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 107 states, 107 states have (on average 47.0) internal successors, (5029), 107 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:10:07,373 INFO L81 ComplementDD]: Finished complementDD. Result has 107 states, 107 states have (on average 47.0) internal successors, (5029), 107 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:10:07,373 INFO L175 Difference]: Start difference. First operand has 51 places, 25 transitions, 146 flow. Second operand 106 states and 1587 transitions. [2023-11-17 11:10:07,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 1430 transitions, 11091 flow [2023-11-17 11:10:07,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 1430 transitions, 9001 flow, removed 597 selfloop flow, removed 11 redundant places. [2023-11-17 11:10:07,596 INFO L231 Difference]: Finished difference. Result has 161 places, 926 transitions, 5608 flow [2023-11-17 11:10:07,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=106, PETRI_FLOW=5608, PETRI_PLACES=161, PETRI_TRANSITIONS=926} [2023-11-17 11:10:07,665 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 143 predicate places. [2023-11-17 11:10:07,665 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 926 transitions, 5608 flow [2023-11-17 11:10:07,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 8.317073170731707) internal successors, (341), 41 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:10:07,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:10:07,665 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:10:07,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 11:10:07,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:10:07,866 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:10:07,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:10:07,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1597778822, now seen corresponding path program 1 times [2023-11-17 11:10:07,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:10:07,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650283233] [2023-11-17 11:10:07,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:10:07,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:10:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:10:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:10:08,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:10:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650283233] [2023-11-17 11:10:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650283233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:10:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642570402] [2023-11-17 11:10:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:10:08,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:10:08,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:10:08,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:10:08,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 11:10:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:10:08,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-17 11:10:08,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:10:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 37 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:10:08,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:10:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:10:09,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642570402] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:10:09,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:10:09,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2023-11-17 11:10:09,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635966257] [2023-11-17 11:10:09,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:10:09,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-17 11:10:09,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:10:09,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-17 11:10:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1821, Unknown=0, NotChecked=0, Total=2162 [2023-11-17 11:10:09,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 47 [2023-11-17 11:10:09,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 926 transitions, 5608 flow. Second operand has 47 states, 47 states have (on average 8.340425531914894) internal successors, (392), 47 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:10:09,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:10:09,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 47 [2023-11-17 11:10:09,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:11:00,705 INFO L124 PetriNetUnfolderBase]: 169295/253828 cut-off events. [2023-11-17 11:11:00,705 INFO L125 PetriNetUnfolderBase]: For 6072551/6072551 co-relation queries the response was YES. [2023-11-17 11:11:02,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074934 conditions, 253828 events. 169295/253828 cut-off events. For 6072551/6072551 co-relation queries the response was YES. Maximal size of possible extension queue 11946. Compared 2238308 event pairs, 3850 based on Foata normal form. 4266/258094 useless extension candidates. Maximal degree in co-relation 1074894. Up to 48060 conditions per place. [2023-11-17 11:11:03,278 INFO L140 encePairwiseOnDemand]: 42/47 looper letters, 1847 selfloop transitions, 24522 changer transitions 0/26369 dead transitions. [2023-11-17 11:11:03,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 26369 transitions, 205412 flow [2023-11-17 11:11:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 246 states. [2023-11-17 11:11:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2023-11-17 11:11:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 3439 transitions. [2023-11-17 11:11:03,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29743988929251 [2023-11-17 11:11:03,285 INFO L72 ComplementDD]: Start complementDD. Operand 246 states and 3439 transitions. [2023-11-17 11:11:03,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 246 states and 3439 transitions. [2023-11-17 11:11:03,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:11:03,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 246 states and 3439 transitions. [2023-11-17 11:11:03,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 247 states, 246 states have (on average 13.979674796747968) internal successors, (3439), 246 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:11:03,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 247 states, 247 states have (on average 47.0) internal successors, (11609), 247 states have internal predecessors, (11609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:11:03,303 INFO L81 ComplementDD]: Finished complementDD. Result has 247 states, 247 states have (on average 47.0) internal successors, (11609), 247 states have internal predecessors, (11609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:11:03,303 INFO L175 Difference]: Start difference. First operand has 161 places, 926 transitions, 5608 flow. Second operand 246 states and 3439 transitions. [2023-11-17 11:11:03,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 26369 transitions, 205412 flow Received shutdown request... [2023-11-17 11:19:24,674 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 11:19:24,675 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 [2023-11-17 11:19:25,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 11:19:25,716 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 [2023-11-17 11:19:27,498 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 11:19:27,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:19:27,499 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 11:19:27,500 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 11:19:27,500 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 11:19:27,500 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-17 11:19:27,503 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:19:27,503 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:19:27,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:19:27 BasicIcfg [2023-11-17 11:19:27,505 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:19:27,505 INFO L158 Benchmark]: Toolchain (without parser) took 572793.62ms. Allocated memory was 316.7MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 261.5MB in the beginning and 1.0GB in the end (delta: -753.4MB). Peak memory consumption was 6.4GB. Max. memory is 8.0GB. [2023-11-17 11:19:27,505 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:19:27,506 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.71ms. Allocated memory is still 316.7MB. Free memory was 261.1MB in the beginning and 241.9MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 11:19:27,506 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.85ms. Allocated memory is still 316.7MB. Free memory was 241.9MB in the beginning and 239.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:19:27,506 INFO L158 Benchmark]: Boogie Preprocessor took 30.41ms. Allocated memory is still 316.7MB. Free memory was 239.8MB in the beginning and 238.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:19:27,506 INFO L158 Benchmark]: RCFGBuilder took 431.01ms. Allocated memory is still 316.7MB. Free memory was 238.1MB in the beginning and 277.0MB in the end (delta: -38.9MB). Peak memory consumption was 23.6MB. Max. memory is 8.0GB. [2023-11-17 11:19:27,507 INFO L158 Benchmark]: TraceAbstraction took 571863.77ms. Allocated memory was 316.7MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 276.5MB in the beginning and 1.0GB in the end (delta: -738.4MB). Peak memory consumption was 6.4GB. Max. memory is 8.0GB. [2023-11-17 11:19:27,508 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 139.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 419.71ms. Allocated memory is still 316.7MB. Free memory was 261.1MB in the beginning and 241.9MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.85ms. Allocated memory is still 316.7MB. Free memory was 241.9MB in the beginning and 239.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.41ms. Allocated memory is still 316.7MB. Free memory was 239.8MB in the beginning and 238.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 431.01ms. Allocated memory is still 316.7MB. Free memory was 238.1MB in the beginning and 277.0MB in the end (delta: -38.9MB). Peak memory consumption was 23.6MB. Max. memory is 8.0GB. * TraceAbstraction took 571863.77ms. Allocated memory was 316.7MB in the beginning and 7.3GB in the end (delta: 7.0GB). Free memory was 276.5MB in the beginning and 1.0GB in the end (delta: -738.4MB). Peak memory consumption was 6.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 30 PlacesBefore, 18 PlacesAfterwards, 27 TransitionsBefore, 14 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 3 FixpointIterations, 3 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 18 TotalNumberOfCompositions, 210 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 178, independent: 172, independent conditional: 0, independent unconditional: 172, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 138, independent: 133, independent conditional: 0, independent unconditional: 133, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 138, independent: 133, independent conditional: 0, independent unconditional: 133, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 14, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 178, independent: 39, independent conditional: 0, independent unconditional: 39, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 138, unknown conditional: 0, unknown unconditional: 138] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 681]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 720]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 38 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: 571.8s, OverallIterations: 6, TraceHistogramMax: 12, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 565.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2813 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2813 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 672 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5697 IncrementalHoareTripleChecker+Invalid, 6369 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 672 mSolverCounterUnsat, 0 mSDtfsCounter, 5697 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 501 GetRequests, 61 SyntacticMatches, 10 SemanticMatches, 430 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37268 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5608occurred in iteration=5, InterpolantAutomatonStates: 141, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 206 ConstructedInterpolants, 0 QuantifiedInterpolants, 2083 SizeOfPredicates, 22 NumberOfNonLiveVariables, 947 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 16 InterpolantComputations, 1 PerfectInterpolantSequences, 92/669 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