/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 --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:31:55,542 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:31:55,616 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 [2023-08-27 05:31:55,622 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:31:55,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:31:55,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:31:55,654 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:31:55,654 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:31:55,654 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:31:55,655 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:31:55,655 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:31:55,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:31:55,656 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:31:55,656 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:31:55,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:31:55,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:31:55,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:31:55,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:31:55,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:31:55,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:31:55,658 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:31:55,661 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:31:55,661 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:31:55,661 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:31:55,662 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:31:55,662 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:31:55,662 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:31:55,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:31:55,663 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:31:55,663 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:31:55,664 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:31:55,664 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:31:55,664 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:31:55,664 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:31:55,664 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:31:55,664 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:31:55,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:31:55,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:31:55,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:31:55,985 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:31:55,986 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:31:55,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-27 05:31:57,180 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:31:57,451 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:31:57,452 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_87-lists_racefree.i [2023-08-27 05:31:57,471 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030d502f6/df81570a3be0402d987b2b7af0b64d69/FLAGf6ee4f4c3 [2023-08-27 05:31:57,484 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030d502f6/df81570a3be0402d987b2b7af0b64d69 [2023-08-27 05:31:57,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:31:57,487 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:31:57,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:31:57,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:31:57,493 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:31:57,494 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:31:57" (1/1) ... [2023-08-27 05:31:57,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcccdd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:57, skipping insertion in model container [2023-08-27 05:31:57,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:31:57" (1/1) ... [2023-08-27 05:31:57,559 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:31:58,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:31:58,066 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:31:58,085 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 05:31:58,086 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 05:31:58,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:31:58,176 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:31:58,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58 WrapperNode [2023-08-27 05:31:58,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:31:58,178 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:31:58,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:31:58,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:31:58,183 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,215 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,259 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 250 [2023-08-27 05:31:58,259 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:31:58,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:31:58,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:31:58,261 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:31:58,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,269 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,305 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,307 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,308 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,312 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:31:58,313 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:31:58,313 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:31:58,313 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:31:58,313 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (1/1) ... [2023-08-27 05:31:58,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:31:58,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:31:58,342 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) [2023-08-27 05:31:58,376 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 [2023-08-27 05:31:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:31:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-27 05:31:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-27 05:31:58,394 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-27 05:31:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:31:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:31:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-27 05:31:58,395 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-27 05:31:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:31:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:31:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 05:31:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:31:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-27 05:31:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:31:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:31:58,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:31:58,398 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 05:31:58,567 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:31:58,569 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:31:59,018 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:31:59,028 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:31:59,028 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-27 05:31:59,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:31:59 BoogieIcfgContainer [2023-08-27 05:31:59,031 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:31:59,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:31:59,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:31:59,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:31:59,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:31:57" (1/3) ... [2023-08-27 05:31:59,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f47e702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:31:59, skipping insertion in model container [2023-08-27 05:31:59,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:31:58" (2/3) ... [2023-08-27 05:31:59,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f47e702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:31:59, skipping insertion in model container [2023-08-27 05:31:59,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:31:59" (3/3) ... [2023-08-27 05:31:59,038 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_87-lists_racefree.i [2023-08-27 05:31:59,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:31:59,054 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-27 05:31:59,054 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:31:59,154 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 05:31:59,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 266 transitions, 554 flow [2023-08-27 05:31:59,401 INFO L124 PetriNetUnfolderBase]: 56/506 cut-off events. [2023-08-27 05:31:59,401 INFO L125 PetriNetUnfolderBase]: For 8/15 co-relation queries the response was YES. [2023-08-27 05:31:59,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 506 events. 56/506 cut-off events. For 8/15 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2156 event pairs, 0 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 255. Up to 8 conditions per place. [2023-08-27 05:31:59,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 266 transitions, 554 flow [2023-08-27 05:31:59,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 260 transitions, 536 flow [2023-08-27 05:31:59,431 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:31:59,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 260 transitions, 536 flow [2023-08-27 05:31:59,444 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 260 transitions, 536 flow [2023-08-27 05:31:59,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 260 transitions, 536 flow [2023-08-27 05:31:59,511 INFO L124 PetriNetUnfolderBase]: 52/482 cut-off events. [2023-08-27 05:31:59,512 INFO L125 PetriNetUnfolderBase]: For 4/7 co-relation queries the response was YES. [2023-08-27 05:31:59,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 482 events. 52/482 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1979 event pairs, 0 based on Foata normal form. 0/397 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-27 05:31:59,530 INFO L119 LiptonReduction]: Number of co-enabled transitions 20728 [2023-08-27 05:32:05,708 INFO L134 LiptonReduction]: Checked pairs total: 31763 [2023-08-27 05:32:05,708 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-27 05:32:05,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:32:05,724 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;@64ae2c31, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:32:05,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-27 05:32:05,729 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:32:05,729 INFO L124 PetriNetUnfolderBase]: 1/25 cut-off events. [2023-08-27 05:32:05,729 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:32:05,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:32:05,730 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-27 05:32:05,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:32:05,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:32:05,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1231676759, now seen corresponding path program 1 times [2023-08-27 05:32:05,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:32:05,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717566094] [2023-08-27 05:32:05,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:32:05,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:32:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:32:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:32:05,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:32:05,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717566094] [2023-08-27 05:32:05,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717566094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 05:32:05,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 05:32:05,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 05:32:05,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798353984] [2023-08-27 05:32:05,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 05:32:05,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 05:32:05,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:32:05,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 05:32:05,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 05:32:05,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 496 [2023-08-27 05:32:05,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:05,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:32:05,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 496 [2023-08-27 05:32:05,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:32:06,928 INFO L124 PetriNetUnfolderBase]: 4521/7716 cut-off events. [2023-08-27 05:32:06,928 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-08-27 05:32:06,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14871 conditions, 7716 events. 4521/7716 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 47967 event pairs, 4242 based on Foata normal form. 580/6227 useless extension candidates. Maximal degree in co-relation 13164. Up to 7074 conditions per place. [2023-08-27 05:32:06,952 INFO L140 encePairwiseOnDemand]: 481/496 looper letters, 42 selfloop transitions, 2 changer transitions 13/65 dead transitions. [2023-08-27 05:32:06,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 65 transitions, 260 flow [2023-08-27 05:32:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 05:32:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 05:32:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-08-27 05:32:06,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147849462365591 [2023-08-27 05:32:06,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-08-27 05:32:06,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-08-27 05:32:06,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:32:06,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-08-27 05:32:06,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:06,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:06,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 496.0) internal successors, (1984), 4 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:06,983 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 168 flow. Second operand 3 states and 766 transitions. [2023-08-27 05:32:06,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 65 transitions, 260 flow [2023-08-27 05:32:06,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 05:32:06,991 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 124 flow [2023-08-27 05:32:06,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-08-27 05:32:06,996 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-08-27 05:32:06,996 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 124 flow [2023-08-27 05:32:06,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:06,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:32:06,997 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-27 05:32:06,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:32:06,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:32:06,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:32:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash -574938170, now seen corresponding path program 1 times [2023-08-27 05:32:06,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:32:06,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150212738] [2023-08-27 05:32:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:32:06,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:32:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:32:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:32:07,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:32:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150212738] [2023-08-27 05:32:07,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150212738] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 05:32:07,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758371024] [2023-08-27 05:32:07,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:32:07,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 05:32:07,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:32:07,369 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) [2023-08-27 05:32:07,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 05:32:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:32:07,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-27 05:32:07,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 05:32:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:32:07,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 05:32:07,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:32:07,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758371024] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 05:32:07,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 05:32:07,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 05:32:07,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055926713] [2023-08-27 05:32:07,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 05:32:07,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 05:32:07,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:32:07,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 05:32:07,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 05:32:07,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 496 [2023-08-27 05:32:07,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 233.57142857142858) internal successors, (1635), 7 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:07,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:32:07,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 496 [2023-08-27 05:32:07,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:32:08,011 INFO L124 PetriNetUnfolderBase]: 2267/3942 cut-off events. [2023-08-27 05:32:08,011 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-27 05:32:08,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7578 conditions, 3942 events. 2267/3942 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 22039 event pairs, 2146 based on Foata normal form. 0/2829 useless extension candidates. Maximal degree in co-relation 7565. Up to 3588 conditions per place. [2023-08-27 05:32:08,025 INFO L140 encePairwiseOnDemand]: 493/496 looper letters, 42 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-08-27 05:32:08,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 230 flow [2023-08-27 05:32:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 05:32:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 05:32:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1442 transitions. [2023-08-27 05:32:08,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845430107526882 [2023-08-27 05:32:08,030 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1442 transitions. [2023-08-27 05:32:08,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1442 transitions. [2023-08-27 05:32:08,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:32:08,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1442 transitions. [2023-08-27 05:32:08,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:08,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 496.0) internal successors, (3472), 7 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:08,049 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 496.0) internal successors, (3472), 7 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:08,049 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 124 flow. Second operand 6 states and 1442 transitions. [2023-08-27 05:32:08,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 230 flow [2023-08-27 05:32:08,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 226 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 05:32:08,052 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 156 flow [2023-08-27 05:32:08,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-08-27 05:32:08,052 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -1 predicate places. [2023-08-27 05:32:08,053 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 156 flow [2023-08-27 05:32:08,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 233.57142857142858) internal successors, (1635), 7 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:08,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:32:08,054 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-27 05:32:08,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 05:32:08,259 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 [2023-08-27 05:32:08,260 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:32:08,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:32:08,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1929218327, now seen corresponding path program 2 times [2023-08-27 05:32:08,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:32:08,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729085078] [2023-08-27 05:32:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:32:08,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:32:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:32:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:32:08,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:32:08,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729085078] [2023-08-27 05:32:08,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729085078] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 05:32:08,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702824007] [2023-08-27 05:32:08,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 05:32:08,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 05:32:08,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:32:08,454 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) [2023-08-27 05:32:08,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 05:32:08,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 05:32:08,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 05:32:08,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-27 05:32:08,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 05:32:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:32:08,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 05:32:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:32:08,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702824007] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 05:32:08,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 05:32:08,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-27 05:32:08,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806641207] [2023-08-27 05:32:08,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 05:32:08,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 05:32:08,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:32:08,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 05:32:08,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 05:32:08,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 496 [2023-08-27 05:32:08,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 156 flow. Second operand has 13 states, 13 states have (on average 233.30769230769232) internal successors, (3033), 13 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:08,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:32:08,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 496 [2023-08-27 05:32:08,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:32:09,226 INFO L124 PetriNetUnfolderBase]: 2267/3948 cut-off events. [2023-08-27 05:32:09,226 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-27 05:32:09,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7615 conditions, 3948 events. 2267/3948 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 22063 event pairs, 2146 based on Foata normal form. 6/2842 useless extension candidates. Maximal degree in co-relation 7556. Up to 3588 conditions per place. [2023-08-27 05:32:09,241 INFO L140 encePairwiseOnDemand]: 493/496 looper letters, 42 selfloop transitions, 11 changer transitions 0/61 dead transitions. [2023-08-27 05:32:09,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 61 transitions, 298 flow [2023-08-27 05:32:09,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 05:32:09,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 05:32:09,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2843 transitions. [2023-08-27 05:32:09,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776545698924731 [2023-08-27 05:32:09,248 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2843 transitions. [2023-08-27 05:32:09,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2843 transitions. [2023-08-27 05:32:09,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:32:09,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2843 transitions. [2023-08-27 05:32:09,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 236.91666666666666) internal successors, (2843), 12 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:09,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 496.0) internal successors, (6448), 13 states have internal predecessors, (6448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:09,266 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 496.0) internal successors, (6448), 13 states have internal predecessors, (6448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:09,266 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 156 flow. Second operand 12 states and 2843 transitions. [2023-08-27 05:32:09,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 61 transitions, 298 flow [2023-08-27 05:32:09,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 61 transitions, 284 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 05:32:09,269 INFO L231 Difference]: Finished difference. Result has 79 places, 61 transitions, 226 flow [2023-08-27 05:32:09,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=226, PETRI_PLACES=79, PETRI_TRANSITIONS=61} [2023-08-27 05:32:09,269 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 15 predicate places. [2023-08-27 05:32:09,270 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 61 transitions, 226 flow [2023-08-27 05:32:09,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 233.30769230769232) internal successors, (3033), 13 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:32:09,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:32:09,271 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-27 05:32:09,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 05:32:09,471 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 [2023-08-27 05:32:09,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:32:09,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:32:09,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1702544713, now seen corresponding path program 3 times [2023-08-27 05:32:09,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:32:09,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848600500] [2023-08-27 05:32:09,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:32:09,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:32:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:32:09,940 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:32:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:32:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848600500] [2023-08-27 05:32:09,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848600500] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 05:32:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118977492] [2023-08-27 05:32:09,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 05:32:09,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 05:32:09,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:32:09,942 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) [2023-08-27 05:32:09,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 05:34:41,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-27 05:34:41,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 05:34:41,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-27 05:34:41,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 05:34:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:34:41,388 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 05:34:41,592 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:34:41,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118977492] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 05:34:41,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 05:34:41,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-27 05:34:41,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510824548] [2023-08-27 05:34:41,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 05:34:41,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 05:34:41,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:34:41,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 05:34:41,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-27 05:34:41,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 496 [2023-08-27 05:34:41,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 61 transitions, 226 flow. Second operand has 25 states, 25 states have (on average 233.16) internal successors, (5829), 25 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:34:41,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:34:41,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 496 [2023-08-27 05:34:41,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:34:42,184 INFO L124 PetriNetUnfolderBase]: 2267/3960 cut-off events. [2023-08-27 05:34:42,185 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2023-08-27 05:34:42,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7699 conditions, 3960 events. 2267/3960 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 22068 event pairs, 2146 based on Foata normal form. 12/2860 useless extension candidates. Maximal degree in co-relation 7562. Up to 3588 conditions per place. [2023-08-27 05:34:42,211 INFO L140 encePairwiseOnDemand]: 493/496 looper letters, 42 selfloop transitions, 23 changer transitions 0/73 dead transitions. [2023-08-27 05:34:42,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 73 transitions, 452 flow [2023-08-27 05:34:42,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-27 05:34:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-27 05:34:42,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5645 transitions. [2023-08-27 05:34:42,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47421034946236557 [2023-08-27 05:34:42,235 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5645 transitions. [2023-08-27 05:34:42,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5645 transitions. [2023-08-27 05:34:42,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:34:42,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5645 transitions. [2023-08-27 05:34:42,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 235.20833333333334) internal successors, (5645), 24 states have internal predecessors, (5645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:34:42,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 496.0) internal successors, (12400), 25 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:34:42,280 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 496.0) internal successors, (12400), 25 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:34:42,280 INFO L175 Difference]: Start difference. First operand has 79 places, 61 transitions, 226 flow. Second operand 24 states and 5645 transitions. [2023-08-27 05:34:42,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 73 transitions, 452 flow [2023-08-27 05:34:42,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 73 transitions, 380 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-27 05:34:42,288 INFO L231 Difference]: Finished difference. Result has 109 places, 73 transitions, 346 flow [2023-08-27 05:34:42,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=346, PETRI_PLACES=109, PETRI_TRANSITIONS=73} [2023-08-27 05:34:42,290 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 45 predicate places. [2023-08-27 05:34:42,290 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 73 transitions, 346 flow [2023-08-27 05:34:42,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 233.16) internal successors, (5829), 25 states have internal predecessors, (5829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:34:42,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:34:42,293 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-27 05:34:42,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 05:34:42,509 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 [2023-08-27 05:34:42,509 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:34:42,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:34:42,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1106020873, now seen corresponding path program 4 times [2023-08-27 05:34:42,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:34:42,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559421449] [2023-08-27 05:34:42,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:34:42,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:34:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:34:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:34:43,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:34:43,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559421449] [2023-08-27 05:34:43,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559421449] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 05:34:43,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159725086] [2023-08-27 05:34:43,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-27 05:34:43,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 05:34:43,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:34:43,773 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) [2023-08-27 05:34:43,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 05:34:44,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-27 05:34:44,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 05:34:44,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-27 05:34:44,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 05:34:44,297 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:34:44,297 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 05:34:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:34:44,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159725086] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 05:34:44,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 05:34:44,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-27 05:34:44,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396636899] [2023-08-27 05:34:44,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 05:34:44,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-27 05:34:44,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:34:44,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-27 05:34:44,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-27 05:34:44,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 496 [2023-08-27 05:34:44,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 73 transitions, 346 flow. Second operand has 49 states, 49 states have (on average 233.08163265306123) internal successors, (11421), 49 states have internal predecessors, (11421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:34:44,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:34:44,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 496 [2023-08-27 05:34:44,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:34:45,659 INFO L124 PetriNetUnfolderBase]: 2267/3984 cut-off events. [2023-08-27 05:34:45,659 INFO L125 PetriNetUnfolderBase]: For 5241/5241 co-relation queries the response was YES. [2023-08-27 05:34:45,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7843 conditions, 3984 events. 2267/3984 cut-off events. For 5241/5241 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 22068 event pairs, 2146 based on Foata normal form. 24/2896 useless extension candidates. Maximal degree in co-relation 7574. Up to 3588 conditions per place. [2023-08-27 05:34:45,676 INFO L140 encePairwiseOnDemand]: 493/496 looper letters, 42 selfloop transitions, 47 changer transitions 0/97 dead transitions. [2023-08-27 05:34:45,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 97 transitions, 716 flow [2023-08-27 05:34:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-27 05:34:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-27 05:34:45,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11249 transitions. [2023-08-27 05:34:45,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724882392473118 [2023-08-27 05:34:45,700 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11249 transitions. [2023-08-27 05:34:45,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11249 transitions. [2023-08-27 05:34:45,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 05:34:45,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11249 transitions. [2023-08-27 05:34:45,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 234.35416666666666) internal successors, (11249), 48 states have internal predecessors, (11249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:34:45,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 496.0) internal successors, (24304), 49 states have internal predecessors, (24304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:34:45,760 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 496.0) internal successors, (24304), 49 states have internal predecessors, (24304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:34:45,761 INFO L175 Difference]: Start difference. First operand has 109 places, 73 transitions, 346 flow. Second operand 48 states and 11249 transitions. [2023-08-27 05:34:45,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 97 transitions, 716 flow [2023-08-27 05:34:45,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 97 transitions, 572 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-08-27 05:34:45,768 INFO L231 Difference]: Finished difference. Result has 169 places, 97 transitions, 586 flow [2023-08-27 05:34:45,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=496, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=586, PETRI_PLACES=169, PETRI_TRANSITIONS=97} [2023-08-27 05:34:45,769 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 105 predicate places. [2023-08-27 05:34:45,769 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 97 transitions, 586 flow [2023-08-27 05:34:45,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 233.08163265306123) internal successors, (11421), 49 states have internal predecessors, (11421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:34:45,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:34:45,771 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-08-27 05:34:45,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 05:34:45,980 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 [2023-08-27 05:34:45,980 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:34:45,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:34:45,980 INFO L85 PathProgramCache]: Analyzing trace with hash -683455369, now seen corresponding path program 5 times [2023-08-27 05:34:45,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:34:45,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634692263] [2023-08-27 05:34:45,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:34:45,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:34:46,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 05:34:49,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1083 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-27 05:34:49,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 05:34:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634692263] [2023-08-27 05:34:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634692263] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 05:34:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499750917] [2023-08-27 05:34:49,541 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-27 05:34:49,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 05:34:49,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:34:49,544 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) [2023-08-27 05:34:49,544 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... [2023-08-27 05:46:33,265 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 [2023-08-27 05:46:33,266 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 [2023-08-27 05:46:34,278 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 [2023-08-27 05:46:34,473 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-08-27 05:46:34,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-08-27 05:46:34,501 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-27 05:46:34,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-27 05:46:34,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-08-27 05:46:34,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568164956] [2023-08-27 05:46:34,505 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-27 05:46:34,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-27 05:46:34,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 05:46:34,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-27 05:46:34,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-27 05:46:34,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 496 [2023-08-27 05:46:34,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 97 transitions, 586 flow. Second operand has 49 states, 49 states have (on average 233.0408163265306) internal successors, (11419), 49 states have internal predecessors, (11419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 05:46:34,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 05:46:34,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 496 [2023-08-27 05:46:34,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 05:46:34,537 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-27 05:46:34,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 05:46:34,537 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-27 05:46:34,539 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-27 05:46:34,540 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-08-27 05:46:34,543 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (1/2) [2023-08-27 05:46:34,545 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 05:46:34,545 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 05:46:34,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 05:46:34 BasicIcfg [2023-08-27 05:46:34,548 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 05:46:34,549 INFO L158 Benchmark]: Toolchain (without parser) took 877061.92ms. Allocated memory was 358.6MB in the beginning and 564.1MB in the end (delta: 205.5MB). Free memory was 332.2MB in the beginning and 327.1MB in the end (delta: 5.1MB). Peak memory consumption was 211.7MB. Max. memory is 16.0GB. [2023-08-27 05:46:34,550 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory was 336.3MB in the beginning and 336.1MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 05:46:34,550 INFO L158 Benchmark]: CACSL2BoogieTranslator took 688.78ms. Allocated memory is still 358.6MB. Free memory was 332.2MB in the beginning and 295.7MB in the end (delta: 36.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-27 05:46:34,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.81ms. Allocated memory is still 358.6MB. Free memory was 295.7MB in the beginning and 292.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 05:46:34,550 INFO L158 Benchmark]: Boogie Preprocessor took 51.17ms. Allocated memory is still 358.6MB. Free memory was 292.7MB in the beginning and 290.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 05:46:34,550 INFO L158 Benchmark]: RCFGBuilder took 718.26ms. Allocated memory is still 358.6MB. Free memory was 290.2MB in the beginning and 263.4MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 05:46:34,551 INFO L158 Benchmark]: TraceAbstraction took 875515.57ms. Allocated memory was 358.6MB in the beginning and 564.1MB in the end (delta: 205.5MB). Free memory was 263.4MB in the beginning and 327.1MB in the end (delta: -63.7MB). Peak memory consumption was 142.5MB. Max. memory is 16.0GB. [2023-08-27 05:46:34,556 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 358.6MB. Free memory was 336.3MB in the beginning and 336.1MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 688.78ms. Allocated memory is still 358.6MB. Free memory was 332.2MB in the beginning and 295.7MB in the end (delta: 36.5MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 81.81ms. Allocated memory is still 358.6MB. Free memory was 295.7MB in the beginning and 292.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 51.17ms. Allocated memory is still 358.6MB. Free memory was 292.7MB in the beginning and 290.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 718.26ms. Allocated memory is still 358.6MB. Free memory was 290.2MB in the beginning and 263.4MB in the end (delta: 26.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 875515.57ms. Allocated memory was 358.6MB in the beginning and 564.1MB in the end (delta: 205.5MB). Free memory was 263.4MB in the beginning and 327.1MB in the end (delta: -63.7MB). Peak memory consumption was 142.5MB. 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: 6.3s, 241 PlacesBefore, 64 PlacesAfterwards, 260 TransitionsBefore, 76 TransitionsAfterwards, 20728 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 152 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 22 ConcurrentYvCompositions, 7 ChoiceCompositions, 230 TotalNumberOfCompositions, 31763 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19706, independent: 19352, independent conditional: 0, independent unconditional: 19352, dependent: 354, dependent conditional: 0, dependent unconditional: 354, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10733, independent: 10638, independent conditional: 0, independent unconditional: 10638, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19706, independent: 8714, independent conditional: 0, independent unconditional: 8714, dependent: 259, dependent conditional: 0, dependent unconditional: 259, unknown: 10733, unknown conditional: 0, unknown unconditional: 10733] , Statistics on independence cache: Total cache size (in pairs): 455, Positive cache size: 418, Positive conditional cache size: 0, Positive unconditional cache size: 418, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1049]: 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: 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. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 362 locations, 22 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: 875.4s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 982 IncrementalHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 982 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, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=586occurred 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, 151.8s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3006 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