/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 PROGRAM_FIRST -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 13:04:16,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 13:04:16,724 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 13:04:16,727 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 13:04:16,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 13:04:16,741 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 13:04:16,742 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 13:04:16,742 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 13:04:16,743 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 13:04:16,743 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 13:04:16,743 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 13:04:16,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 13:04:16,744 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 13:04:16,744 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 13:04:16,744 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 13:04:16,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 13:04:16,745 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 13:04:16,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 13:04:16,745 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 13:04:16,745 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 13:04:16,746 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 13:04:16,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 13:04:16,746 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 13:04:16,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 13:04:16,747 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 13:04:16,747 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 13:04:16,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 13:04:16,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:04:16,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 13:04:16,748 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 13:04:16,748 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 13:04:16,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 13:04:16,749 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 13:04:16,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 13:04:16,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 13:04:16,749 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 13:04:16,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 13:04:17,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 13:04:17,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 13:04:17,008 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 13:04:17,008 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 13:04:17,012 INFO L431 ainManager$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 13:04:17,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 13:04:18,149 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 13:04:18,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_86-lists_racing.i [2023-08-24 13:04:18,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/516ace46e/46133faecf2d4644bf9736588a6f75c0/FLAGebe0502d0 [2023-08-24 13:04:18,170 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/516ace46e/46133faecf2d4644bf9736588a6f75c0 [2023-08-24 13:04:18,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 13:04:18,172 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 13:04:18,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 13:04:18,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 13:04:18,175 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 13:04:18,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a06fb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18, skipping insertion in model container [2023-08-24 13:04:18,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,207 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 13:04:18,457 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 13:04:18,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:04:18,556 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 13:04:18,576 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 13:04:18,577 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-24 13:04:18,584 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 13:04:18,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:04:18,658 INFO L206 MainTranslator]: Completed translation [2023-08-24 13:04:18,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18 WrapperNode [2023-08-24 13:04:18,660 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 13:04:18,660 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 13:04:18,661 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 13:04:18,661 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 13:04:18,665 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,688 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,711 INFO L138 Inliner]: procedures = 278, calls = 60, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 237 [2023-08-24 13:04:18,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 13:04:18,715 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 13:04:18,715 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 13:04:18,715 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 13:04:18,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,724 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,724 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,730 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,745 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,750 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 13:04:18,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 13:04:18,751 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 13:04:18,751 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 13:04:18,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (1/1) ... [2023-08-24 13:04:18,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:04:18,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:04:18,792 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 13:04:18,798 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 13:04:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 13:04:18,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-24 13:04:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-24 13:04:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-24 13:04:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 13:04:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 13:04:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-24 13:04:18,819 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-24 13:04:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 13:04:18,819 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 13:04:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 13:04:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 13:04:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-24 13:04:18,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 13:04:18,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 13:04:18,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 13:04:18,822 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 13:04:18,925 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 13:04:18,926 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 13:04:19,200 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 13:04:19,209 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 13:04:19,209 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-24 13:04:19,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:04:19 BoogieIcfgContainer [2023-08-24 13:04:19,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 13:04:19,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 13:04:19,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 13:04:19,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 13:04:19,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:04:18" (1/3) ... [2023-08-24 13:04:19,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14862bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:04:19, skipping insertion in model container [2023-08-24 13:04:19,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:04:18" (2/3) ... [2023-08-24 13:04:19,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14862bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:04:19, skipping insertion in model container [2023-08-24 13:04:19,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:04:19" (3/3) ... [2023-08-24 13:04:19,218 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-08-24 13:04:19,237 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 13:04:19,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 13:04:19,238 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 13:04:19,327 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 13:04:19,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 238 transitions, 498 flow [2023-08-24 13:04:19,518 INFO L124 PetriNetUnfolderBase]: 54/450 cut-off events. [2023-08-24 13:04:19,519 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-24 13:04:19,528 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 13:04:19,528 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 238 transitions, 498 flow [2023-08-24 13:04:19,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 235 transitions, 484 flow [2023-08-24 13:04:19,538 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:04:19,547 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 235 transitions, 484 flow [2023-08-24 13:04:19,549 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 235 transitions, 484 flow [2023-08-24 13:04:19,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 235 transitions, 484 flow [2023-08-24 13:04:19,593 INFO L124 PetriNetUnfolderBase]: 50/437 cut-off events. [2023-08-24 13:04:19,593 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 13:04:19,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 437 events. 50/437 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1719 event pairs, 0 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 219. Up to 8 conditions per place. [2023-08-24 13:04:19,605 INFO L119 LiptonReduction]: Number of co-enabled transitions 16642 [2023-08-24 13:04:24,102 INFO L134 LiptonReduction]: Checked pairs total: 25128 [2023-08-24 13:04:24,102 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-08-24 13:04:24,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 13:04:24,124 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;@1fcfe9c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:04:24,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 13:04:24,134 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:04:24,134 INFO L124 PetriNetUnfolderBase]: 8/75 cut-off events. [2023-08-24 13:04:24,134 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 13:04:24,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:04:24,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:04:24,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:04:24,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:04:24,139 INFO L85 PathProgramCache]: Analyzing trace with hash 394101827, now seen corresponding path program 1 times [2023-08-24 13:04:24,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:04:24,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839971829] [2023-08-24 13:04:24,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:24,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:04:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:04:24,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:04:24,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839971829] [2023-08-24 13:04:24,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839971829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:04:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:04:24,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 13:04:24,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580903633] [2023-08-24 13:04:24,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:04:24,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:04:24,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:04:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:04:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:04:24,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 13:04:24,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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 13:04:24,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:04:24,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 13:04:24,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:04:24,803 INFO L124 PetriNetUnfolderBase]: 3305/5518 cut-off events. [2023-08-24 13:04:24,803 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2023-08-24 13:04:24,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10758 conditions, 5518 events. 3305/5518 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 30928 event pairs, 3078 based on Foata normal form. 276/4859 useless extension candidates. Maximal degree in co-relation 9717. Up to 5166 conditions per place. [2023-08-24 13:04:24,818 INFO L140 encePairwiseOnDemand]: 413/427 looper letters, 35 selfloop transitions, 2 changer transitions 14/54 dead transitions. [2023-08-24 13:04:24,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 220 flow [2023-08-24 13:04:24,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:04:24,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:04:24,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-08-24 13:04:24,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277127244340359 [2023-08-24 13:04:24,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-08-24 13:04:24,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-08-24 13:04:24,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:04:24,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-08-24 13:04:24,835 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 13:04:24,838 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 13:04:24,839 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 13:04:24,840 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 142 flow. Second operand 3 states and 676 transitions. [2023-08-24 13:04:24,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 220 flow [2023-08-24 13:04:24,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 13:04:24,846 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 101 flow [2023-08-24 13:04:24,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-08-24 13:04:24,849 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 2 predicate places. [2023-08-24 13:04:24,849 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 101 flow [2023-08-24 13:04:24,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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 13:04:24,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:04:24,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:04:24,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 13:04:24,850 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:04:24,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:04:24,850 INFO L85 PathProgramCache]: Analyzing trace with hash -757131802, now seen corresponding path program 1 times [2023-08-24 13:04:24,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:04:24,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340122888] [2023-08-24 13:04:24,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:24,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:04:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:04:24,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:04:24,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340122888] [2023-08-24 13:04:24,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340122888] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:04:24,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448770415] [2023-08-24 13:04:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:24,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:04:24,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:04:24,947 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 13:04:24,959 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 13:04:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:25,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-24 13:04:25,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:04:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:04:25,078 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 13:04:25,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448770415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:04:25,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 13:04:25,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-24 13:04:25,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45390888] [2023-08-24 13:04:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:04:25,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:04:25,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:04:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:04:25,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:04:25,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 427 [2023-08-24 13:04:25,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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 13:04:25,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:04:25,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 427 [2023-08-24 13:04:25,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:04:25,298 INFO L124 PetriNetUnfolderBase]: 1315/2236 cut-off events. [2023-08-24 13:04:25,298 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 13:04:25,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4438 conditions, 2236 events. 1315/2236 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11351 event pairs, 641 based on Foata normal form. 0/1876 useless extension candidates. Maximal degree in co-relation 4425. Up to 2128 conditions per place. [2023-08-24 13:04:25,306 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 43 selfloop transitions, 2 changer transitions 1/49 dead transitions. [2023-08-24 13:04:25,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 211 flow [2023-08-24 13:04:25,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:04:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:04:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2023-08-24 13:04:25,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183450429352069 [2023-08-24 13:04:25,309 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2023-08-24 13:04:25,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2023-08-24 13:04:25,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:04:25,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2023-08-24 13:04:25,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 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 13:04:25,319 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 13:04:25,320 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 13:04:25,320 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 101 flow. Second operand 3 states and 664 transitions. [2023-08-24 13:04:25,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 211 flow [2023-08-24 13:04:25,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 49 transitions, 207 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 13:04:25,322 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 105 flow [2023-08-24 13:04:25,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-24 13:04:25,323 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-08-24 13:04:25,324 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 105 flow [2023-08-24 13:04:25,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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 13:04:25,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:04:25,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:04:25,329 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 13:04:25,531 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 13:04:25,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:04:25,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:04:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1140494633, now seen corresponding path program 1 times [2023-08-24 13:04:25,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:04:25,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459298509] [2023-08-24 13:04:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:25,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:04:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:04:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:04:25,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459298509] [2023-08-24 13:04:25,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459298509] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:04:25,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498679451] [2023-08-24 13:04:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:25,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:04:25,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:04:25,660 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 13:04:25,662 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 13:04:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:25,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 13:04:25,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:04:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:04:25,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:04:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:04:25,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498679451] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:04:25,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:04:25,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-24 13:04:25,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107132582] [2023-08-24 13:04:25,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:04:25,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 13:04:25,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:04:25,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 13:04:25,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 13:04:25,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 13:04:25,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 105 flow. Second operand has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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 13:04:25,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:04:25,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 13:04:25,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:04:26,007 INFO L124 PetriNetUnfolderBase]: 1315/2279 cut-off events. [2023-08-24 13:04:26,007 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-24 13:04:26,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 2279 events. 1315/2279 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 11536 event pairs, 1216 based on Foata normal form. 3/1923 useless extension candidates. Maximal degree in co-relation 4480. Up to 2138 conditions per place. [2023-08-24 13:04:26,015 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 35 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2023-08-24 13:04:26,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 197 flow [2023-08-24 13:04:26,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:04:26,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:04:26,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1273 transitions. [2023-08-24 13:04:26,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968774395003903 [2023-08-24 13:04:26,018 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1273 transitions. [2023-08-24 13:04:26,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1273 transitions. [2023-08-24 13:04:26,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:04:26,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1273 transitions. [2023-08-24 13:04:26,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.16666666666666) internal successors, (1273), 6 states have internal predecessors, (1273), 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 13:04:26,024 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 13:04:26,025 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 13:04:26,025 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 105 flow. Second operand 6 states and 1273 transitions. [2023-08-24 13:04:26,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 197 flow [2023-08-24 13:04:26,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 13:04:26,026 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 137 flow [2023-08-24 13:04:26,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=137, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2023-08-24 13:04:26,027 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2023-08-24 13:04:26,027 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 137 flow [2023-08-24 13:04:26,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 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 13:04:26,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:04:26,028 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:04:26,043 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 13:04:26,232 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 13:04:26,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-24 13:04:26,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:04:26,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1121219578, now seen corresponding path program 2 times [2023-08-24 13:04:26,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:04:26,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409873667] [2023-08-24 13:04:26,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:26,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:04:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-24 13:04:26,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:04:26,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409873667] [2023-08-24 13:04:26,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409873667] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:04:26,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162530612] [2023-08-24 13:04:26,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:04:26,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:04:26,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:04:26,384 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 13:04:26,385 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 13:04:26,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 13:04:26,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:04:26,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 13:04:26,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:04:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:04:26,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:04:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 13:04:26,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162530612] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:04:26,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:04:26,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-08-24 13:04:26,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934244406] [2023-08-24 13:04:26,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:04:26,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 13:04:26,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:04:26,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 13:04:26,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-08-24 13:04:26,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 427 [2023-08-24 13:04:26,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 137 flow. Second operand has 14 states, 14 states have (on average 200.28571428571428) internal successors, (2804), 14 states have internal predecessors, (2804), 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 13:04:26,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:04:26,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 427 [2023-08-24 13:04:26,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:04:26,710 INFO L124 PetriNetUnfolderBase]: 17/58 cut-off events. [2023-08-24 13:04:26,710 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-24 13:04:26,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 58 events. 17/58 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 87 event pairs, 1 based on Foata normal form. 15/73 useless extension candidates. Maximal degree in co-relation 155. Up to 34 conditions per place. [2023-08-24 13:04:26,711 INFO L140 encePairwiseOnDemand]: 422/427 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-08-24 13:04:26,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 198 flow [2023-08-24 13:04:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 13:04:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 13:04:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2812 transitions. [2023-08-24 13:04:26,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039143526262966 [2023-08-24 13:04:26,715 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2812 transitions. [2023-08-24 13:04:26,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2812 transitions. [2023-08-24 13:04:26,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:04:26,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2812 transitions. [2023-08-24 13:04:26,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 200.85714285714286) internal successors, (2812), 14 states have internal predecessors, (2812), 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 13:04:26,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 427.0) internal successors, (6405), 15 states have internal predecessors, (6405), 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 13:04:26,727 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 427.0) internal successors, (6405), 15 states have internal predecessors, (6405), 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 13:04:26,727 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 137 flow. Second operand 14 states and 2812 transitions. [2023-08-24 13:04:26,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 198 flow [2023-08-24 13:04:26,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 182 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-24 13:04:26,728 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-24 13:04:26,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-24 13:04:26,729 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -14 predicate places. [2023-08-24 13:04:26,729 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-24 13:04:26,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 200.28571428571428) internal successors, (2804), 14 states have internal predecessors, (2804), 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 13:04:26,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-24 13:04:26,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-24 13:04:26,739 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 13:04:26,948 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 13:04:26,949 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-24 13:04:26,950 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE (1/2) [2023-08-24 13:04:26,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 238 transitions, 498 flow [2023-08-24 13:04:26,977 INFO L124 PetriNetUnfolderBase]: 54/450 cut-off events. [2023-08-24 13:04:26,977 INFO L125 PetriNetUnfolderBase]: For 8/16 co-relation queries the response was YES. [2023-08-24 13:04:26,979 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 13:04:26,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 238 transitions, 498 flow [2023-08-24 13:04:26,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 236 transitions, 488 flow [2023-08-24 13:04:26,980 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:04:26,981 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 236 transitions, 488 flow [2023-08-24 13:04:26,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 236 transitions, 488 flow [2023-08-24 13:04:26,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 236 transitions, 488 flow [2023-08-24 13:04:27,003 INFO L124 PetriNetUnfolderBase]: 50/438 cut-off events. [2023-08-24 13:04:27,003 INFO L125 PetriNetUnfolderBase]: For 4/8 co-relation queries the response was YES. [2023-08-24 13:04:27,004 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 13:04:27,011 INFO L119 LiptonReduction]: Number of co-enabled transitions 16700 [2023-08-24 13:04:31,179 INFO L134 LiptonReduction]: Checked pairs total: 25415 [2023-08-24 13:04:31,179 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-08-24 13:04:31,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 13:04:31,181 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;@1fcfe9c1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:04:31,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-24 13:04:31,183 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:04:31,183 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-24 13:04:31,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 13:04:31,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:04:31,183 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-24 13:04:31,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:04:31,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:04:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1932571154, now seen corresponding path program 1 times [2023-08-24 13:04:31,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:04:31,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692655039] [2023-08-24 13:04:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:31,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:04:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:31,215 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 13:04:31,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:04:31,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692655039] [2023-08-24 13:04:31,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692655039] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:04:31,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:04:31,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 13:04:31,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407589626] [2023-08-24 13:04:31,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:04:31,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 13:04:31,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:04:31,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 13:04:31,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 13:04:31,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 13:04:31,220 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 13:04:31,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:04:31,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 13:04:31,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:04:31,542 INFO L124 PetriNetUnfolderBase]: 3305/5512 cut-off events. [2023-08-24 13:04:31,542 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-08-24 13:04:31,546 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 161. Compared 30805 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 13:04:31,553 INFO L140 encePairwiseOnDemand]: 413/427 looper letters, 38 selfloop transitions, 2 changer transitions 9/55 dead transitions. [2023-08-24 13:04:31,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 224 flow [2023-08-24 13:04:31,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 13:04:31,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 13:04:31,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-08-24 13:04:31,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277127244340359 [2023-08-24 13:04:31,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-08-24 13:04:31,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-08-24 13:04:31,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:04:31,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-08-24 13:04:31,556 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 13:04:31,557 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 13:04:31,558 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 13:04:31,558 INFO L175 Difference]: Start difference. First operand has 54 places, 65 transitions, 146 flow. Second operand 3 states and 676 transitions. [2023-08-24 13:04:31,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 224 flow [2023-08-24 13:04:31,560 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 13:04:31,561 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 112 flow [2023-08-24 13:04:31,561 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=112, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2023-08-24 13:04:31,563 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-24 13:04:31,563 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 112 flow [2023-08-24 13:04:31,563 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 13:04:31,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:04:31,563 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-24 13:04:31,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 13:04:31,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:04:31,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:04:31,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1224325872, now seen corresponding path program 1 times [2023-08-24 13:04:31,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:04:31,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766076659] [2023-08-24 13:04:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:31,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:04:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:31,602 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 13:04:31,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:04:31,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766076659] [2023-08-24 13:04:31,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766076659] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:04:31,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847843400] [2023-08-24 13:04:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:31,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:04:31,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:04:31,604 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 13:04:31,605 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 13:04:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:31,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-24 13:04:31,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:04:31,713 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 13:04:31,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:04:31,729 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 13:04:31,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847843400] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:04:31,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:04:31,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-24 13:04:31,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64949932] [2023-08-24 13:04:31,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:04:31,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 13:04:31,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:04:31,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 13:04:31,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-24 13:04:31,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 13:04:31,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 112 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 13:04:31,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:04:31,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 13:04:31,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:04:31,927 INFO L124 PetriNetUnfolderBase]: 1331/2314 cut-off events. [2023-08-24 13:04:31,927 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-24 13:04:31,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4514 conditions, 2314 events. 1331/2314 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11284 event pairs, 1250 based on Foata normal form. 0/1965 useless extension candidates. Maximal degree in co-relation 4501. Up to 2152 conditions per place. [2023-08-24 13:04:31,935 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 38 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-08-24 13:04:31,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 210 flow [2023-08-24 13:04:31,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:04:31,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:04:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1276 transitions. [2023-08-24 13:04:31,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49804839968774395 [2023-08-24 13:04:31,939 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1276 transitions. [2023-08-24 13:04:31,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1276 transitions. [2023-08-24 13:04:31,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:04:31,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1276 transitions. [2023-08-24 13:04:31,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.66666666666666) internal successors, (1276), 6 states have internal predecessors, (1276), 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 13:04:31,944 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 13:04:31,945 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 13:04:31,945 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 112 flow. Second operand 6 states and 1276 transitions. [2023-08-24 13:04:31,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 210 flow [2023-08-24 13:04:31,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 206 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 13:04:31,946 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 144 flow [2023-08-24 13:04:31,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-08-24 13:04:31,947 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-24 13:04:31,947 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 144 flow [2023-08-24 13:04:31,947 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 13:04:31,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:04:31,947 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-24 13:04:31,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-24 13:04:32,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:04:32,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:04:32,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:04:32,154 INFO L85 PathProgramCache]: Analyzing trace with hash 563804562, now seen corresponding path program 2 times [2023-08-24 13:04:32,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:04:32,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632287985] [2023-08-24 13:04:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:32,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:04:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:32,254 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 13:04:32,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:04:32,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632287985] [2023-08-24 13:04:32,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632287985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:04:32,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179746828] [2023-08-24 13:04:32,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 13:04:32,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:04:32,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:04:32,256 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 13:04:32,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 13:04:32,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 13:04:32,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:04:32,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 13:04:32,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:04:32,404 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 13:04:32,405 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:04:32,440 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 13:04:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179746828] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:04:32,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:04:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 13:04:32,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246583291] [2023-08-24 13:04:32,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:04:32,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 13:04:32,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:04:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 13:04:32,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-24 13:04:32,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 13:04:32,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 144 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 13:04:32,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:04:32,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 13:04:32,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:04:32,690 INFO L124 PetriNetUnfolderBase]: 1331/2320 cut-off events. [2023-08-24 13:04:32,690 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-24 13:04:32,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4551 conditions, 2320 events. 1331/2320 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11288 event pairs, 1250 based on Foata normal form. 6/1978 useless extension candidates. Maximal degree in co-relation 4492. Up to 2152 conditions per place. [2023-08-24 13:04:32,698 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 38 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2023-08-24 13:04:32,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 278 flow [2023-08-24 13:04:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 13:04:32,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 13:04:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2515 transitions. [2023-08-24 13:04:32,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49082747853239655 [2023-08-24 13:04:32,703 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2515 transitions. [2023-08-24 13:04:32,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2515 transitions. [2023-08-24 13:04:32,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:04:32,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2515 transitions. [2023-08-24 13:04:32,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 209.58333333333334) internal successors, (2515), 12 states have internal predecessors, (2515), 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 13:04:32,714 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 13:04:32,716 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 13:04:32,716 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 144 flow. Second operand 12 states and 2515 transitions. [2023-08-24 13:04:32,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 278 flow [2023-08-24 13:04:32,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 55 transitions, 264 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 13:04:32,718 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 214 flow [2023-08-24 13:04:32,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=214, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-08-24 13:04:32,720 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 19 predicate places. [2023-08-24 13:04:32,720 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 214 flow [2023-08-24 13:04:32,721 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 13:04:32,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:04:32,721 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-24 13:04:32,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-24 13:04:32,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:04:32,925 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:04:32,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:04:32,926 INFO L85 PathProgramCache]: Analyzing trace with hash -306258734, now seen corresponding path program 3 times [2023-08-24 13:04:32,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:04:32,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091144149] [2023-08-24 13:04:32,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:04:32,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:04:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:04:33,198 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 13:04:33,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:04:33,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091144149] [2023-08-24 13:04:33,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091144149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:04:33,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769115213] [2023-08-24 13:04:33,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 13:04:33,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:04:33,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:04:33,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 13:04:33,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 13:07:27,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-24 13:07:27,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:07:27,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 13:07:27,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:07:27,757 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 13:07:27,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:07:27,892 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 13:07:27,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769115213] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:07:27,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:07:27,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-24 13:07:27,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126973904] [2023-08-24 13:07:27,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:07:27,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 13:07:27,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:07:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 13:07:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-24 13:07:27,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 13:07:27,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 214 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 13:07:27,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:07:27,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 13:07:27,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:07:28,259 INFO L124 PetriNetUnfolderBase]: 1331/2332 cut-off events. [2023-08-24 13:07:28,259 INFO L125 PetriNetUnfolderBase]: For 471/471 co-relation queries the response was YES. [2023-08-24 13:07:28,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4635 conditions, 2332 events. 1331/2332 cut-off events. For 471/471 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11279 event pairs, 1250 based on Foata normal form. 12/1996 useless extension candidates. Maximal degree in co-relation 4498. Up to 2152 conditions per place. [2023-08-24 13:07:28,269 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 38 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2023-08-24 13:07:28,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 67 transitions, 432 flow [2023-08-24 13:07:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 13:07:28,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 13:07:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4993 transitions. [2023-08-24 13:07:28,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4872170179547229 [2023-08-24 13:07:28,279 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4993 transitions. [2023-08-24 13:07:28,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4993 transitions. [2023-08-24 13:07:28,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:07:28,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4993 transitions. [2023-08-24 13:07:28,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 208.04166666666666) internal successors, (4993), 24 states have internal predecessors, (4993), 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 13:07:28,303 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 13:07:28,304 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 13:07:28,304 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 214 flow. Second operand 24 states and 4993 transitions. [2023-08-24 13:07:28,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 67 transitions, 432 flow [2023-08-24 13:07:28,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 67 transitions, 360 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-24 13:07:28,308 INFO L231 Difference]: Finished difference. Result has 103 places, 67 transitions, 334 flow [2023-08-24 13:07:28,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=334, PETRI_PLACES=103, PETRI_TRANSITIONS=67} [2023-08-24 13:07:28,309 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 49 predicate places. [2023-08-24 13:07:28,309 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 67 transitions, 334 flow [2023-08-24 13:07:28,310 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 13:07:28,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:07:28,311 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 2, 1, 1, 1, 1, 1] [2023-08-24 13:07:28,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 13:07:28,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:07:28,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:07:28,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:07:28,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1293659310, now seen corresponding path program 4 times [2023-08-24 13:07:28,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:07:28,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842395086] [2023-08-24 13:07:28,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:07:28,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:07:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:07:29,371 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 13:07:29,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:07:29,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842395086] [2023-08-24 13:07:29,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842395086] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:07:29,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789274302] [2023-08-24 13:07:29,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 13:07:29,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:07:29,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:07:29,373 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 13:07:29,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 13:07:29,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 13:07:29,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 13:07:29,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-24 13:07:29,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 13:07:29,768 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 13:07:29,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 13:07:30,294 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 13:07:30,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789274302] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 13:07:30,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 13:07:30,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-24 13:07:30,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260314087] [2023-08-24 13:07:30,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 13:07:30,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-24 13:07:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:07:30,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-24 13:07:30,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-24 13:07:30,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 13:07:30,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 67 transitions, 334 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 13:07:30,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:07:30,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 13:07:30,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:07:30,703 INFO L124 PetriNetUnfolderBase]: 1331/2356 cut-off events. [2023-08-24 13:07:30,703 INFO L125 PetriNetUnfolderBase]: For 5241/5241 co-relation queries the response was YES. [2023-08-24 13:07:30,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4779 conditions, 2356 events. 1331/2356 cut-off events. For 5241/5241 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11288 event pairs, 1250 based on Foata normal form. 24/2032 useless extension candidates. Maximal degree in co-relation 4510. Up to 2152 conditions per place. [2023-08-24 13:07:30,712 INFO L140 encePairwiseOnDemand]: 424/427 looper letters, 38 selfloop transitions, 47 changer transitions 0/91 dead transitions. [2023-08-24 13:07:30,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 91 transitions, 696 flow [2023-08-24 13:07:30,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 13:07:30,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 13:07:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9949 transitions. [2023-08-24 13:07:30,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48541178766588605 [2023-08-24 13:07:30,725 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9949 transitions. [2023-08-24 13:07:30,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9949 transitions. [2023-08-24 13:07:30,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:07:30,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9949 transitions. [2023-08-24 13:07:30,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 207.27083333333334) internal successors, (9949), 48 states have internal predecessors, (9949), 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 13:07:30,753 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 13:07:30,755 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 13:07:30,755 INFO L175 Difference]: Start difference. First operand has 103 places, 67 transitions, 334 flow. Second operand 48 states and 9949 transitions. [2023-08-24 13:07:30,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 91 transitions, 696 flow [2023-08-24 13:07:30,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 91 transitions, 552 flow, removed 61 selfloop flow, removed 11 redundant places. [2023-08-24 13:07:30,759 INFO L231 Difference]: Finished difference. Result has 163 places, 91 transitions, 574 flow [2023-08-24 13:07:30,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=427, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=574, PETRI_PLACES=163, PETRI_TRANSITIONS=91} [2023-08-24 13:07:30,760 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 109 predicate places. [2023-08-24 13:07:30,760 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 91 transitions, 574 flow [2023-08-24 13:07:30,762 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 13:07:30,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:07:30,762 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 2, 1, 1, 1, 1, 1] [2023-08-24 13:07:30,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 13:07:30,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:07:30,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 13:07:30,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:07:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash -791281582, now seen corresponding path program 5 times [2023-08-24 13:07:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:07:30,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665910643] [2023-08-24 13:07:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:07:30,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:07:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:07:33,455 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 13:07:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:07:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665910643] [2023-08-24 13:07:33,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665910643] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 13:07:33,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908433997] [2023-08-24 13:07:33,455 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 13:07:33,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 13:07:33,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:07:33,456 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 13:07:33,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Received shutdown request... [2023-08-24 13:18:59,812 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 13:18:59,812 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 13:19:00,823 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 13:19:01,019 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forcibly destroying the process [2023-08-24 13:19:01,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 137 [2023-08-24 13:19:01,055 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-24 13:19:01,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-08-24 13:19:01,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2023-08-24 13:19:01,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610941972] [2023-08-24 13:19:01,055 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-08-24 13:19:01,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-24 13:19:01,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:19:01,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-24 13:19:01,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-24 13:19:01,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 427 [2023-08-24 13:19:01,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 91 transitions, 574 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 13:19:01,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:19:01,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 427 [2023-08-24 13:19:01,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:19:01,067 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-24 13:19:01,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 13:19:01,067 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 13:19:01,067 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-24 13:19:01,067 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1] [2023-08-24 13:19:01,068 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT (2/2) [2023-08-24 13:19:01,068 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 13:19:01,068 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 13:19:01,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:19:01 BasicIcfg [2023-08-24 13:19:01,071 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 13:19:01,071 INFO L158 Benchmark]: Toolchain (without parser) took 882899.00ms. Allocated memory was 367.0MB in the beginning and 975.2MB in the end (delta: 608.2MB). Free memory was 340.6MB in the beginning and 594.9MB in the end (delta: -254.3MB). Peak memory consumption was 353.6MB. Max. memory is 16.0GB. [2023-08-24 13:19:01,071 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 367.0MB. Free memory was 344.9MB in the beginning and 344.7MB in the end (delta: 165.5kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 13:19:01,072 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.89ms. Allocated memory is still 367.0MB. Free memory was 340.6MB in the beginning and 303.8MB in the end (delta: 36.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-24 13:19:01,072 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.73ms. Allocated memory is still 367.0MB. Free memory was 303.8MB in the beginning and 300.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:19:01,072 INFO L158 Benchmark]: Boogie Preprocessor took 35.03ms. Allocated memory is still 367.0MB. Free memory was 300.9MB in the beginning and 298.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:19:01,072 INFO L158 Benchmark]: RCFGBuilder took 459.48ms. Allocated memory is still 367.0MB. Free memory was 298.4MB in the beginning and 273.8MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-24 13:19:01,072 INFO L158 Benchmark]: TraceAbstraction took 881857.31ms. Allocated memory was 367.0MB in the beginning and 975.2MB in the end (delta: 608.2MB). Free memory was 273.2MB in the beginning and 594.9MB in the end (delta: -321.7MB). Peak memory consumption was 286.5MB. Max. memory is 16.0GB. [2023-08-24 13:19:01,074 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 367.0MB. Free memory was 344.9MB in the beginning and 344.7MB in the end (delta: 165.5kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 486.89ms. Allocated memory is still 367.0MB. Free memory was 340.6MB in the beginning and 303.8MB in the end (delta: 36.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.73ms. Allocated memory is still 367.0MB. Free memory was 303.8MB in the beginning and 300.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.03ms. Allocated memory is still 367.0MB. Free memory was 300.9MB in the beginning and 298.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 459.48ms. Allocated memory is still 367.0MB. Free memory was 298.4MB in the beginning and 273.8MB in the end (delta: 24.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 881857.31ms. Allocated memory was 367.0MB in the beginning and 975.2MB in the end (delta: 608.2MB). Free memory was 273.2MB in the beginning and 594.9MB in the end (delta: -321.7MB). Peak memory consumption was 286.5MB. 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: 4.6s, 217 PlacesBefore, 53 PlacesAfterwards, 235 TransitionsBefore, 64 TransitionsAfterwards, 16642 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 116 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 189 TotalNumberOfCompositions, 25128 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14752, independent: 14426, independent conditional: 0, independent unconditional: 14426, dependent: 326, dependent conditional: 0, dependent unconditional: 326, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8766, independent: 8670, independent conditional: 0, independent unconditional: 8670, dependent: 96, dependent conditional: 0, dependent unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14752, independent: 5756, independent conditional: 0, independent unconditional: 5756, dependent: 230, dependent conditional: 0, dependent unconditional: 230, unknown: 8766, unknown conditional: 0, unknown unconditional: 8766] , Statistics on independence cache: Total cache size (in pairs): 416, Positive cache size: 382, Positive conditional cache size: 0, Positive unconditional cache size: 382, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 218 PlacesBefore, 54 PlacesAfterwards, 236 TransitionsBefore, 65 TransitionsAfterwards, 16700 CoEnabledTransitionPairs, 6 FixpointIterations, 45 TrivialSequentialCompositions, 116 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 7 ChoiceCompositions, 189 TotalNumberOfCompositions, 25415 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15115, independent: 14783, independent conditional: 0, independent unconditional: 14783, dependent: 332, dependent conditional: 0, dependent unconditional: 332, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8937, independent: 8835, independent conditional: 0, independent unconditional: 8835, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15115, independent: 5948, independent conditional: 0, independent unconditional: 5948, dependent: 230, dependent conditional: 0, dependent unconditional: 230, unknown: 8937, unknown conditional: 0, unknown unconditional: 8937] , Statistics on independence cache: Total cache size (in pairs): 475, Positive cache size: 436, Positive conditional cache size: 0, Positive unconditional cache size: 436, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, 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: 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: 7.6s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 332 IncrementalHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 332 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1067 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 2 PerfectInterpolantSequences, 16/41 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency 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: 874.1s, OverallIterations: 6, TraceHistogramMax: 46, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1002 IncrementalHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 1002 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, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=574occurred 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: 0.1s SsaConstructionTime, 174.7s SatisfiabilityAnalysisTime, 4.3s 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