/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 00:16:00,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 00:16:00,397 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 00:16:00,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 00:16:00,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 00:16:00,438 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 00:16:00,439 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 00:16:00,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 00:16:00,444 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 00:16:00,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 00:16:00,445 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 00:16:00,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 00:16:00,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 00:16:00,446 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 00:16:00,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 00:16:00,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 00:16:00,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 00:16:00,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 00:16:00,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 00:16:00,448 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 00:16:00,448 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 00:16:00,449 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 00:16:00,449 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 00:16:00,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 00:16:00,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 00:16:00,450 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 00:16:00,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 00:16:00,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:16:00,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 00:16:00,451 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 00:16:00,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 00:16:00,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 00:16:00,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 00:16:00,452 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 00:16:00,452 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 00:16:00,452 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 00:16:00,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 00:16:00,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 00:16:00,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 00:16:00,791 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 00:16:00,793 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 00:16:00,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-24 00:16:01,948 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 00:16:02,267 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 00:16:02,268 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-24 00:16:02,287 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70062dfae/c7866a715a64405bbb033d728dfe8a29/FLAGa6d8973b3 [2023-08-24 00:16:02,302 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70062dfae/c7866a715a64405bbb033d728dfe8a29 [2023-08-24 00:16:02,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 00:16:02,309 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 00:16:02,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 00:16:02,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 00:16:02,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 00:16:02,314 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:16:02" (1/1) ... [2023-08-24 00:16:02,314 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4815c873 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:02, skipping insertion in model container [2023-08-24 00:16:02,315 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:16:02" (1/1) ... [2023-08-24 00:16:02,370 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 00:16:02,752 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2023-08-24 00:16:02,796 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:16:02,908 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 00:16:02,935 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 00:16:02,936 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 00:16:02,959 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i[47038,47051] [2023-08-24 00:16:02,979 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:16:03,052 INFO L206 MainTranslator]: Completed translation [2023-08-24 00:16:03,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03 WrapperNode [2023-08-24 00:16:03,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 00:16:03,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 00:16:03,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 00:16:03,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 00:16:03,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,092 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,133 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 237 [2023-08-24 00:16:03,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 00:16:03,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 00:16:03,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 00:16:03,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 00:16:03,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,156 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,156 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,188 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,192 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,194 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,205 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 00:16:03,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 00:16:03,206 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 00:16:03,206 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 00:16:03,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (1/1) ... [2023-08-24 00:16:03,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:16:03,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:16:03,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 00:16:03,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 00:16:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 00:16:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-24 00:16:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-24 00:16:03,291 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-24 00:16:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 00:16:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 00:16:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-24 00:16:03,292 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-24 00:16:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 00:16:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 00:16:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 00:16:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 00:16:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 00:16:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 00:16:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 00:16:03,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 00:16:03,296 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 00:16:03,431 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 00:16:03,432 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 00:16:03,761 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 00:16:03,772 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 00:16:03,772 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-24 00:16:03,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:16:03 BoogieIcfgContainer [2023-08-24 00:16:03,775 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 00:16:03,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 00:16:03,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 00:16:03,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 00:16:03,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:16:02" (1/3) ... [2023-08-24 00:16:03,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37db9031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:16:03, skipping insertion in model container [2023-08-24 00:16:03,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:16:03" (2/3) ... [2023-08-24 00:16:03,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37db9031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:16:03, skipping insertion in model container [2023-08-24 00:16:03,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:16:03" (3/3) ... [2023-08-24 00:16:03,784 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-08-24 00:16:03,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 00:16:03,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 00:16:03,801 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 00:16:03,933 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 00:16:03,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 238 transitions, 498 flow [2023-08-24 00:16:04,144 INFO L124 PetriNetUnfolderBase]: 54/450 cut-off events. [2023-08-24 00:16:04,144 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-24 00:16:04,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 450 events. 54/450 cut-off events. For 8/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1825 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2023-08-24 00:16:04,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 238 transitions, 498 flow [2023-08-24 00:16:04,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 236 transitions, 488 flow [2023-08-24 00:16:04,170 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 00:16:04,182 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 236 transitions, 488 flow [2023-08-24 00:16:04,186 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 236 transitions, 488 flow [2023-08-24 00:16:04,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 236 transitions, 488 flow [2023-08-24 00:16:04,256 INFO L124 PetriNetUnfolderBase]: 50/438 cut-off events. [2023-08-24 00:16:04,256 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-08-24 00:16:04,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 438 events. 50/438 cut-off events. For 4/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1736 event pairs, 0 based on Foata normal form. 0/374 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2023-08-24 00:16:04,274 INFO L119 LiptonReduction]: Number of co-enabled transitions 16700 [2023-08-24 00:16:09,866 INFO L134 LiptonReduction]: Checked pairs total: 25406 [2023-08-24 00:16:09,866 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-08-24 00:16:09,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 00:16:09,884 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6bbc1e2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 00:16:09,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 00:16:09,888 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 00:16:09,889 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-24 00:16:09,889 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 00:16:09,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:16:09,889 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-24 00:16:09,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:16:09,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:16:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash 345550649, now seen corresponding path program 1 times [2023-08-24 00:16:09,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:16:09,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287203762] [2023-08-24 00:16:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:16:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:10,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:10,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:16:10,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287203762] [2023-08-24 00:16:10,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287203762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:16:10,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:16:10,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 00:16:10,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915697033] [2023-08-24 00:16:10,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:16:10,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 00:16:10,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:16:10,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 00:16:10,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 00:16:10,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 00:16:10,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 65 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:10,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:16:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 00:16:10,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:16:10,858 INFO L124 PetriNetUnfolderBase]: 3305/5512 cut-off events. [2023-08-24 00:16:10,858 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-08-24 00:16:10,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 5512 events. 3305/5512 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30832 event pairs, 3078 based on Foata normal form. 276/4853 useless extension candidates. Maximal degree in co-relation 9712. Up to 5166 conditions per place. [2023-08-24 00:16:10,882 INFO L140 encePairwiseOnDemand]: 413/427 looper letters, 47 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-24 00:16:10,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 224 flow [2023-08-24 00:16:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 00:16:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 00:16:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-08-24 00:16:10,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277127244340359 [2023-08-24 00:16:10,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-08-24 00:16:10,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-08-24 00:16:10,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:16:10,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-08-24 00:16:10,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:10,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:10,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 427.0) internal successors, (1708), 4 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:10,923 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 146 flow. Second operand 3 states and 676 transitions. [2023-08-24 00:16:10,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 224 flow [2023-08-24 00:16:10,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 55 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 00:16:10,932 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 136 flow [2023-08-24 00:16:10,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2023-08-24 00:16:10,936 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-24 00:16:10,937 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 136 flow [2023-08-24 00:16:10,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:10,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:16:10,938 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-24 00:16:10,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 00:16:10,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:16:10,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:16:10,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1561326090, now seen corresponding path program 1 times [2023-08-24 00:16:10,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:16:10,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927206184] [2023-08-24 00:16:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:10,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:16:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:11,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:16:11,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927206184] [2023-08-24 00:16:11,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927206184] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:16:11,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644827939] [2023-08-24 00:16:11,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:11,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:16:11,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:16:11,091 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:16:11,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 00:16:11,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:11,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 00:16:11,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:16:11,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:11,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:16:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:11,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644827939] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:16:11,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:16:11,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-24 00:16:11,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509344210] [2023-08-24 00:16:11,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:16:11,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 00:16:11,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:16:11,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 00:16:11,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 00:16:11,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 00:16:11,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 206.57142857142858) internal successors, (1446), 7 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:11,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:16:11,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 00:16:11,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:16:11,882 INFO L124 PetriNetUnfolderBase]: 3305/5515 cut-off events. [2023-08-24 00:16:11,882 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-08-24 00:16:11,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10771 conditions, 5515 events. 3305/5515 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30837 event pairs, 3078 based on Foata normal form. 0/4580 useless extension candidates. Maximal degree in co-relation 10758. Up to 5166 conditions per place. [2023-08-24 00:16:11,909 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 47 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-24 00:16:11,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 252 flow [2023-08-24 00:16:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 00:16:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 00:16:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1285 transitions. [2023-08-24 00:16:11,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015612802498048 [2023-08-24 00:16:11,913 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1285 transitions. [2023-08-24 00:16:11,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1285 transitions. [2023-08-24 00:16:11,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:16:11,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1285 transitions. [2023-08-24 00:16:11,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.16666666666666) internal successors, (1285), 6 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:11,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 427.0) internal successors, (2989), 7 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:11,922 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 427.0) internal successors, (2989), 7 states have internal predecessors, (2989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:11,922 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 136 flow. Second operand 6 states and 1285 transitions. [2023-08-24 00:16:11,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 252 flow [2023-08-24 00:16:11,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 248 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 00:16:11,925 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 168 flow [2023-08-24 00:16:11,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-24 00:16:11,926 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2023-08-24 00:16:11,926 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 168 flow [2023-08-24 00:16:11,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 206.57142857142858) internal successors, (1446), 7 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:11,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:16:11,928 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-24 00:16:11,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 00:16:12,133 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 [2023-08-24 00:16:12,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:16:12,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:16:12,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1629948295, now seen corresponding path program 2 times [2023-08-24 00:16:12,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:16:12,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254249584] [2023-08-24 00:16:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:12,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:16:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:12,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:16:12,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254249584] [2023-08-24 00:16:12,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254249584] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:16:12,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912841452] [2023-08-24 00:16:12,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 00:16:12,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:16:12,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:16:12,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:16:12,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 00:16:12,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 00:16:12,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:16:12,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 00:16:12,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:16:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:12,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:16:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:12,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912841452] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:16:12,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:16:12,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 00:16:12,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976824393] [2023-08-24 00:16:12,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:16:12,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 00:16:12,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:16:12,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 00:16:12,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-24 00:16:12,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 00:16:12,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 168 flow. Second operand has 13 states, 13 states have (on average 206.30769230769232) internal successors, (2682), 13 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:12,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:16:12,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 00:16:12,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:16:13,250 INFO L124 PetriNetUnfolderBase]: 3305/5521 cut-off events. [2023-08-24 00:16:13,250 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2023-08-24 00:16:13,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10808 conditions, 5521 events. 3305/5521 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30833 event pairs, 3078 based on Foata normal form. 6/4593 useless extension candidates. Maximal degree in co-relation 10749. Up to 5166 conditions per place. [2023-08-24 00:16:13,274 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 47 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2023-08-24 00:16:13,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 64 transitions, 320 flow [2023-08-24 00:16:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 00:16:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 00:16:13,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2524 transitions. [2023-08-24 00:16:13,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492583918813427 [2023-08-24 00:16:13,281 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2524 transitions. [2023-08-24 00:16:13,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2524 transitions. [2023-08-24 00:16:13,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:16:13,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2524 transitions. [2023-08-24 00:16:13,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 210.33333333333334) internal successors, (2524), 12 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:13,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 427.0) internal successors, (5551), 13 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:13,299 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 427.0) internal successors, (5551), 13 states have internal predecessors, (5551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:13,299 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 168 flow. Second operand 12 states and 2524 transitions. [2023-08-24 00:16:13,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 64 transitions, 320 flow [2023-08-24 00:16:13,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 64 transitions, 306 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 00:16:13,306 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 238 flow [2023-08-24 00:16:13,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=238, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2023-08-24 00:16:13,308 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2023-08-24 00:16:13,308 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 238 flow [2023-08-24 00:16:13,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 206.30769230769232) internal successors, (2682), 13 states have internal predecessors, (2682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:16:13,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:16:13,311 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-24 00:16:13,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 00:16:13,517 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 [2023-08-24 00:16:13,517 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:16:13,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:16:13,518 INFO L85 PathProgramCache]: Analyzing trace with hash -921840295, now seen corresponding path program 3 times [2023-08-24 00:16:13,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:16:13,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590409754] [2023-08-24 00:16:13,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:16:13,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:16:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:16:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:16:13,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:16:13,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590409754] [2023-08-24 00:16:13,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590409754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:16:13,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061709829] [2023-08-24 00:16:13,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 00:16:13,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:16:13,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:16:13,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:16:13,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 00:20:37,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-24 00:20:37,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:20:37,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 00:20:37,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:20:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:20:37,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:20:37,674 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:20:37,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061709829] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:20:37,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:20:37,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-24 00:20:37,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869478399] [2023-08-24 00:20:37,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:20:37,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 00:20:37,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:20:37,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 00:20:37,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-24 00:20:37,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 00:20:37,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 238 flow. Second operand has 25 states, 25 states have (on average 206.16) internal successors, (5154), 25 states have internal predecessors, (5154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:20:37,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:20:37,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 00:20:37,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:20:38,424 INFO L124 PetriNetUnfolderBase]: 3305/5533 cut-off events. [2023-08-24 00:20:38,425 INFO L125 PetriNetUnfolderBase]: For 569/569 co-relation queries the response was YES. [2023-08-24 00:20:38,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10892 conditions, 5533 events. 3305/5533 cut-off events. For 569/569 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30839 event pairs, 3078 based on Foata normal form. 12/4611 useless extension candidates. Maximal degree in co-relation 10755. Up to 5166 conditions per place. [2023-08-24 00:20:38,458 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 47 selfloop transitions, 23 changer transitions 0/76 dead transitions. [2023-08-24 00:20:38,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 76 transitions, 474 flow [2023-08-24 00:20:38,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 00:20:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 00:20:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5002 transitions. [2023-08-24 00:20:38,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2023-08-24 00:20:38,471 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5002 transitions. [2023-08-24 00:20:38,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5002 transitions. [2023-08-24 00:20:38,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:20:38,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5002 transitions. [2023-08-24 00:20:38,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 208.41666666666666) internal successors, (5002), 24 states have internal predecessors, (5002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:20:38,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 427.0) internal successors, (10675), 25 states have internal predecessors, (10675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:20:38,576 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 427.0) internal successors, (10675), 25 states have internal predecessors, (10675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:20:38,576 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 238 flow. Second operand 24 states and 5002 transitions. [2023-08-24 00:20:38,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 76 transitions, 474 flow [2023-08-24 00:20:38,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 76 transitions, 402 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-24 00:20:38,581 INFO L231 Difference]: Finished difference. Result has 110 places, 76 transitions, 358 flow [2023-08-24 00:20:38,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=358, PETRI_PLACES=110, PETRI_TRANSITIONS=76} [2023-08-24 00:20:38,582 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 56 predicate places. [2023-08-24 00:20:38,582 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 76 transitions, 358 flow [2023-08-24 00:20:38,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 206.16) internal successors, (5154), 25 states have internal predecessors, (5154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:20:38,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:20:38,584 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-24 00:20:38,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 00:20:38,804 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 [2023-08-24 00:20:38,804 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:20:38,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:20:38,805 INFO L85 PathProgramCache]: Analyzing trace with hash 999660313, now seen corresponding path program 4 times [2023-08-24 00:20:38,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:20:38,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261034427] [2023-08-24 00:20:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:20:38,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:20:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:20:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:20:40,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:20:40,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261034427] [2023-08-24 00:20:40,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261034427] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:20:40,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592622255] [2023-08-24 00:20:40,050 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 00:20:40,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:20:40,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:20:40,053 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:20:40,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 00:20:40,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 00:20:40,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:20:40,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-24 00:20:40,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:20:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:20:40,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:20:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:20:41,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592622255] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:20:41,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:20:41,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-24 00:20:41,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268627391] [2023-08-24 00:20:41,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:20:41,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-24 00:20:41,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:20:41,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-24 00:20:41,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-24 00:20:41,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 00:20:41,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 76 transitions, 358 flow. Second operand has 49 states, 49 states have (on average 206.08163265306123) internal successors, (10098), 49 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:20:41,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:20:41,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 00:20:41,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:20:42,355 INFO L124 PetriNetUnfolderBase]: 3305/5557 cut-off events. [2023-08-24 00:20:42,355 INFO L125 PetriNetUnfolderBase]: For 5339/5339 co-relation queries the response was YES. [2023-08-24 00:20:42,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11036 conditions, 5557 events. 3305/5557 cut-off events. For 5339/5339 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30837 event pairs, 3078 based on Foata normal form. 24/4647 useless extension candidates. Maximal degree in co-relation 10767. Up to 5166 conditions per place. [2023-08-24 00:20:42,380 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 47 selfloop transitions, 47 changer transitions 0/100 dead transitions. [2023-08-24 00:20:42,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 100 transitions, 738 flow [2023-08-24 00:20:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 00:20:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 00:20:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9958 transitions. [2023-08-24 00:20:42,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48585089773614365 [2023-08-24 00:20:42,404 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9958 transitions. [2023-08-24 00:20:42,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9958 transitions. [2023-08-24 00:20:42,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:20:42,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9958 transitions. [2023-08-24 00:20:42,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 207.45833333333334) internal successors, (9958), 48 states have internal predecessors, (9958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:20:42,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 427.0) internal successors, (20923), 49 states have internal predecessors, (20923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:20:42,458 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 427.0) internal successors, (20923), 49 states have internal predecessors, (20923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:20:42,458 INFO L175 Difference]: Start difference. First operand has 110 places, 76 transitions, 358 flow. Second operand 48 states and 9958 transitions. [2023-08-24 00:20:42,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 100 transitions, 738 flow [2023-08-24 00:20:42,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 100 transitions, 594 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-08-24 00:20:42,465 INFO L231 Difference]: Finished difference. Result has 170 places, 100 transitions, 598 flow [2023-08-24 00:20:42,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=598, PETRI_PLACES=170, PETRI_TRANSITIONS=100} [2023-08-24 00:20:42,466 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2023-08-24 00:20:42,466 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 100 transitions, 598 flow [2023-08-24 00:20:42,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 206.08163265306123) internal successors, (10098), 49 states have internal predecessors, (10098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:20:42,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:20:42,469 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-08-24 00:20:42,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 00:20:42,677 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 [2023-08-24 00:20:42,678 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 00:20:42,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:20:42,678 INFO L85 PathProgramCache]: Analyzing trace with hash 786777753, now seen corresponding path program 5 times [2023-08-24 00:20:42,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:20:42,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163749064] [2023-08-24 00:20:42,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:20:42,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:20:42,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:20:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 00:20:46,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:20:46,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163749064] [2023-08-24 00:20:46,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163749064] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:20:46,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502145999] [2023-08-24 00:20:46,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 00:20:46,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:20:46,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:20:46,247 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 00:20:46,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-08-24 00:30:37,090 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 00:30:37,090 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 00:30:38,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-24 00:30:38,297 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-24 00:30:38,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-24 00:30:38,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 00:30:38,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-24 00:30:38,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-08-24 00:30:38,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257566246] [2023-08-24 00:30:38,325 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-24 00:30:38,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-24 00:30:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:30:38,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-24 00:30:38,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-24 00:30:38,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 00:30:38,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 100 transitions, 598 flow. Second operand has 49 states, 49 states have (on average 206.0408163265306) internal successors, (10096), 49 states have internal predecessors, (10096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 00:30:38,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:30:38,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 00:30:38,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:30:38,339 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-24 00:30:38,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 00:30:38,340 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 00:30:38,341 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-24 00:30:38,341 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 00:30:38,341 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-24 00:30:38,342 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-08-24 00:30:38,345 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 00:30:38,345 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 00:30:38,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:30:38 BasicIcfg [2023-08-24 00:30:38,348 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 00:30:38,348 INFO L158 Benchmark]: Toolchain (without parser) took 876039.75ms. Allocated memory was 325.1MB in the beginning and 557.8MB in the end (delta: 232.8MB). Free memory was 281.1MB in the beginning and 368.0MB in the end (delta: -87.0MB). Peak memory consumption was 146.9MB. Max. memory is 16.0GB. [2023-08-24 00:30:38,349 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 325.1MB. Free memory is still 302.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 00:30:38,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 743.64ms. Allocated memory is still 325.1MB. Free memory was 281.1MB in the beginning and 244.4MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-08-24 00:30:38,349 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.02ms. Allocated memory is still 325.1MB. Free memory was 244.4MB in the beginning and 241.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 00:30:38,349 INFO L158 Benchmark]: Boogie Preprocessor took 69.73ms. Allocated memory is still 325.1MB. Free memory was 241.2MB in the beginning and 239.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 00:30:38,350 INFO L158 Benchmark]: RCFGBuilder took 569.89ms. Allocated memory is still 325.1MB. Free memory was 239.1MB in the beginning and 212.9MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-24 00:30:38,350 INFO L158 Benchmark]: TraceAbstraction took 874569.29ms. Allocated memory was 325.1MB in the beginning and 557.8MB in the end (delta: 232.8MB). Free memory was 212.9MB in the beginning and 368.0MB in the end (delta: -155.1MB). Peak memory consumption was 79.7MB. Max. memory is 16.0GB. [2023-08-24 00:30:38,351 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 325.1MB. Free memory is still 302.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 743.64ms. Allocated memory is still 325.1MB. Free memory was 281.1MB in the beginning and 244.4MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 80.02ms. Allocated memory is still 325.1MB. Free memory was 244.4MB in the beginning and 241.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 69.73ms. Allocated memory is still 325.1MB. Free memory was 241.2MB in the beginning and 239.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 569.89ms. Allocated memory is still 325.1MB. Free memory was 239.1MB in the beginning and 212.9MB in the end (delta: 26.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 874569.29ms. Allocated memory was 325.1MB in the beginning and 557.8MB in the end (delta: 232.8MB). Free memory was 212.9MB in the beginning and 368.0MB in the end (delta: -155.1MB). Peak memory consumption was 79.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.7s, 218 PlacesBefore, 54 PlacesAfterwards, 236 TransitionsBefore, 65 TransitionsAfterwards, 16700 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 116 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 189 TotalNumberOfCompositions, 25406 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14554, independent: 14220, independent conditional: 0, independent unconditional: 14220, dependent: 334, dependent conditional: 0, dependent unconditional: 334, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8783, independent: 8691, independent conditional: 0, independent unconditional: 8691, dependent: 92, dependent conditional: 0, dependent unconditional: 92, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14554, independent: 5529, independent conditional: 0, independent unconditional: 5529, dependent: 242, dependent conditional: 0, dependent unconditional: 242, unknown: 8783, unknown conditional: 0, unknown unconditional: 8783] , Statistics on independence cache: Total cache size (in pairs): 386, Positive cache size: 350, Positive conditional cache size: 0, Positive unconditional cache size: 350, Negative cache size: 36, Negative conditional cache size: 0, Negative unconditional cache size: 36, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1050]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 1051]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 328 locations, 4 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: 874.4s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1200 IncrementalHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 1200 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=598occurred in iteration=5, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 263.8s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2961 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 14 InterpolantComputations, 1 PerfectInterpolantSequences, 28/2066 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