/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 05:08:02,475 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 05:08:02,550 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 05:08:02,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 05:08:02,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 05:08:02,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 05:08:02,597 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 05:08:02,597 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 05:08:02,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 05:08:02,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 05:08:02,601 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 05:08:02,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 05:08:02,602 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 05:08:02,603 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 05:08:02,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 05:08:02,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 05:08:02,603 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 05:08:02,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 05:08:02,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 05:08:02,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 05:08:02,604 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 05:08:02,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 05:08:02,605 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 05:08:02,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 05:08:02,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 05:08:02,606 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 05:08:02,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 05:08:02,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:08:02,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 05:08:02,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 05:08:02,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 05:08:02,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 05:08:02,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 05:08:02,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 05:08:02,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 05:08:02,609 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 05:08:02,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 05:08:02,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 05:08:02,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 05:08:02,956 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 05:08:02,957 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 05:08:02,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-24 05:08:04,024 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 05:08:04,352 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 05:08:04,352 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-24 05:08:04,378 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12faff20e/dccfd12961fc4c218652e2da8838004c/FLAG01d1b610d [2023-08-24 05:08:04,604 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12faff20e/dccfd12961fc4c218652e2da8838004c [2023-08-24 05:08:04,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 05:08:04,607 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 05:08:04,608 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 05:08:04,609 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 05:08:04,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 05:08:04,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:08:04" (1/1) ... [2023-08-24 05:08:04,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aaecc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:04, skipping insertion in model container [2023-08-24 05:08:04,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 05:08:04" (1/1) ... [2023-08-24 05:08:04,665 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 05:08:04,893 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2023-08-24 05:08:04,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:08:04,910 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 05:08:04,941 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-24 05:08:04,942 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-24 05:08:04,974 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2023-08-24 05:08:04,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 05:08:05,023 INFO L206 MainTranslator]: Completed translation [2023-08-24 05:08:05,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05 WrapperNode [2023-08-24 05:08:05,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 05:08:05,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 05:08:05,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 05:08:05,026 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 05:08:05,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,080 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 102 [2023-08-24 05:08:05,080 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 05:08:05,081 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 05:08:05,081 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 05:08:05,081 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 05:08:05,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,111 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,116 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 05:08:05,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 05:08:05,120 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 05:08:05,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 05:08:05,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (1/1) ... [2023-08-24 05:08:05,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 05:08:05,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 05:08:05,150 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 05:08:05,172 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 05:08:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 05:08:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-24 05:08:05,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-24 05:08:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 05:08:05,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 05:08:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 05:08:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 05:08:05,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 05:08:05,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 05:08:05,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 05:08:05,188 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 05:08:05,341 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 05:08:05,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 05:08:05,557 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 05:08:05,632 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 05:08:05,632 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 05:08:05,635 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:08:05 BoogieIcfgContainer [2023-08-24 05:08:05,635 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 05:08:05,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 05:08:05,638 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 05:08:05,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 05:08:05,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 05:08:04" (1/3) ... [2023-08-24 05:08:05,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733c08cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:08:05, skipping insertion in model container [2023-08-24 05:08:05,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 05:08:05" (2/3) ... [2023-08-24 05:08:05,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733c08cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 05:08:05, skipping insertion in model container [2023-08-24 05:08:05,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 05:08:05" (3/3) ... [2023-08-24 05:08:05,643 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-08-24 05:08:05,658 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 05:08:05,658 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 05:08:05,659 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 05:08:05,713 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:05,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 91 transitions, 187 flow [2023-08-24 05:08:05,789 INFO L124 PetriNetUnfolderBase]: 10/101 cut-off events. [2023-08-24 05:08:05,790 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:08:05,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 10/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-08-24 05:08:05,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 91 transitions, 187 flow [2023-08-24 05:08:05,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 91 transitions, 187 flow [2023-08-24 05:08:05,805 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:05,818 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 91 transitions, 187 flow [2023-08-24 05:08:05,824 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 91 transitions, 187 flow [2023-08-24 05:08:05,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 85 places, 91 transitions, 187 flow [2023-08-24 05:08:05,860 INFO L124 PetriNetUnfolderBase]: 10/101 cut-off events. [2023-08-24 05:08:05,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:08:05,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 101 events. 10/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-08-24 05:08:05,864 INFO L119 LiptonReduction]: Number of co-enabled transitions 1612 [2023-08-24 05:08:07,574 INFO L134 LiptonReduction]: Checked pairs total: 2202 [2023-08-24 05:08:07,575 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-24 05:08:07,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:07,598 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:07,598 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:07,601 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:07,602 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-24 05:08:07,602 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 05:08:07,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:07,602 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 05:08:07,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:07,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:07,606 INFO L85 PathProgramCache]: Analyzing trace with hash 439100169, now seen corresponding path program 1 times [2023-08-24 05:08:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:07,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006458951] [2023-08-24 05:08:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:07,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:07,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:07,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:07,733 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:07,734 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:07,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 05:08:07,735 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:07,737 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:07,738 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:07,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 05:08:07,768 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:07,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 154 transitions, 320 flow [2023-08-24 05:08:07,796 INFO L124 PetriNetUnfolderBase]: 19/176 cut-off events. [2023-08-24 05:08:07,797 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 05:08:07,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 176 events. 19/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 400 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-08-24 05:08:07,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 154 transitions, 320 flow [2023-08-24 05:08:07,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 154 transitions, 320 flow [2023-08-24 05:08:07,800 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:07,800 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 154 transitions, 320 flow [2023-08-24 05:08:07,801 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 154 transitions, 320 flow [2023-08-24 05:08:07,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 154 transitions, 320 flow [2023-08-24 05:08:07,838 INFO L124 PetriNetUnfolderBase]: 19/176 cut-off events. [2023-08-24 05:08:07,838 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 05:08:07,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 176 events. 19/176 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 400 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 136. Up to 6 conditions per place. [2023-08-24 05:08:07,846 INFO L119 LiptonReduction]: Number of co-enabled transitions 11036 [2023-08-24 05:08:09,660 INFO L134 LiptonReduction]: Checked pairs total: 20186 [2023-08-24 05:08:09,660 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-24 05:08:09,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:09,663 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:09,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:09,667 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:09,667 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2023-08-24 05:08:09,667 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 05:08:09,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:09,668 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 05:08:09,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:09,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:09,668 INFO L85 PathProgramCache]: Analyzing trace with hash -630136530, now seen corresponding path program 1 times [2023-08-24 05:08:09,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:09,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300218140] [2023-08-24 05:08:09,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:09,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:09,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:09,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:09,720 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:09,720 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:09,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 05:08:09,720 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:09,720 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:09,721 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:09,721 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 05:08:09,761 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:09,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 217 transitions, 455 flow [2023-08-24 05:08:09,800 INFO L124 PetriNetUnfolderBase]: 28/251 cut-off events. [2023-08-24 05:08:09,800 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 05:08:09,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 251 events. 28/251 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 756 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 198. Up to 8 conditions per place. [2023-08-24 05:08:09,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 217 transitions, 455 flow [2023-08-24 05:08:09,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 217 transitions, 455 flow [2023-08-24 05:08:09,807 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:09,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 217 transitions, 455 flow [2023-08-24 05:08:09,807 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 217 transitions, 455 flow [2023-08-24 05:08:09,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 217 transitions, 455 flow [2023-08-24 05:08:09,850 INFO L124 PetriNetUnfolderBase]: 28/251 cut-off events. [2023-08-24 05:08:09,850 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 05:08:09,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 251 events. 28/251 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 756 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 198. Up to 8 conditions per place. [2023-08-24 05:08:09,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 28272 [2023-08-24 05:08:12,149 INFO L134 LiptonReduction]: Checked pairs total: 57548 [2023-08-24 05:08:12,149 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-24 05:08:12,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:12,152 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:12,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:12,157 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:12,157 INFO L124 PetriNetUnfolderBase]: 7/63 cut-off events. [2023-08-24 05:08:12,158 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-24 05:08:12,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:12,158 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 05:08:12,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:12,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1774801914, now seen corresponding path program 1 times [2023-08-24 05:08:12,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:12,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532712505] [2023-08-24 05:08:12,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:12,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:12,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:12,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:12,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:12,232 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:12,237 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:12,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 05:08:12,237 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:12,238 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:12,239 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:12,239 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 05:08:12,286 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:12,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 280 transitions, 592 flow [2023-08-24 05:08:12,350 INFO L124 PetriNetUnfolderBase]: 37/326 cut-off events. [2023-08-24 05:08:12,354 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-24 05:08:12,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 326 events. 37/326 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1138 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 260. Up to 10 conditions per place. [2023-08-24 05:08:12,366 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 280 transitions, 592 flow [2023-08-24 05:08:12,370 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 280 transitions, 592 flow [2023-08-24 05:08:12,370 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:12,370 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 280 transitions, 592 flow [2023-08-24 05:08:12,371 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 280 transitions, 592 flow [2023-08-24 05:08:12,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 280 transitions, 592 flow [2023-08-24 05:08:12,418 INFO L124 PetriNetUnfolderBase]: 37/326 cut-off events. [2023-08-24 05:08:12,418 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-24 05:08:12,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 326 events. 37/326 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1138 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 260. Up to 10 conditions per place. [2023-08-24 05:08:12,441 INFO L119 LiptonReduction]: Number of co-enabled transitions 53320 [2023-08-24 05:08:14,881 INFO L134 LiptonReduction]: Checked pairs total: 109875 [2023-08-24 05:08:14,881 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-24 05:08:14,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:14,883 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:14,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:14,894 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:14,894 INFO L124 PetriNetUnfolderBase]: 12/95 cut-off events. [2023-08-24 05:08:14,894 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-24 05:08:14,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:14,894 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 05:08:14,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:14,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:14,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1252805735, now seen corresponding path program 1 times [2023-08-24 05:08:14,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:14,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159046466] [2023-08-24 05:08:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:14,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:14,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:14,989 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:14,989 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:14,990 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:14,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 05:08:14,990 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:14,991 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:14,991 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:14,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 05:08:15,037 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:15,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 343 transitions, 731 flow [2023-08-24 05:08:15,142 INFO L124 PetriNetUnfolderBase]: 46/401 cut-off events. [2023-08-24 05:08:15,143 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-24 05:08:15,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 401 events. 46/401 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1522 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 339. Up to 12 conditions per place. [2023-08-24 05:08:15,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 343 transitions, 731 flow [2023-08-24 05:08:15,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 343 transitions, 731 flow [2023-08-24 05:08:15,153 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:15,153 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 313 places, 343 transitions, 731 flow [2023-08-24 05:08:15,153 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 313 places, 343 transitions, 731 flow [2023-08-24 05:08:15,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 343 transitions, 731 flow [2023-08-24 05:08:15,229 INFO L124 PetriNetUnfolderBase]: 46/401 cut-off events. [2023-08-24 05:08:15,229 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-24 05:08:15,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 401 events. 46/401 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1522 event pairs, 0 based on Foata normal form. 0/344 useless extension candidates. Maximal degree in co-relation 339. Up to 12 conditions per place. [2023-08-24 05:08:15,260 INFO L119 LiptonReduction]: Number of co-enabled transitions 86180 [2023-08-24 05:08:18,097 INFO L134 LiptonReduction]: Checked pairs total: 177753 [2023-08-24 05:08:18,098 INFO L136 LiptonReduction]: Total number of compositions: 264 [2023-08-24 05:08:18,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:18,102 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:18,103 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:18,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:18,114 INFO L124 PetriNetUnfolderBase]: 13/116 cut-off events. [2023-08-24 05:08:18,114 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-24 05:08:18,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:18,114 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:08:18,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:18,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:18,115 INFO L85 PathProgramCache]: Analyzing trace with hash -528600392, now seen corresponding path program 1 times [2023-08-24 05:08:18,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:18,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921342459] [2023-08-24 05:08:18,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:18,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:18,137 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:18,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:18,155 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:18,155 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:18,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 05:08:18,155 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:18,156 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:18,156 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:18,156 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 05:08:18,201 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:18,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 406 transitions, 872 flow [2023-08-24 05:08:18,283 INFO L124 PetriNetUnfolderBase]: 55/476 cut-off events. [2023-08-24 05:08:18,284 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-24 05:08:18,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 476 events. 55/476 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1910 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 420. Up to 14 conditions per place. [2023-08-24 05:08:18,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 406 transitions, 872 flow [2023-08-24 05:08:18,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 370 places, 406 transitions, 872 flow [2023-08-24 05:08:18,302 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:18,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 370 places, 406 transitions, 872 flow [2023-08-24 05:08:18,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 370 places, 406 transitions, 872 flow [2023-08-24 05:08:18,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 406 transitions, 872 flow [2023-08-24 05:08:18,382 INFO L124 PetriNetUnfolderBase]: 55/476 cut-off events. [2023-08-24 05:08:18,382 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-24 05:08:18,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 476 events. 55/476 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1910 event pairs, 0 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 420. Up to 14 conditions per place. [2023-08-24 05:08:18,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 126852 [2023-08-24 05:08:21,640 INFO L134 LiptonReduction]: Checked pairs total: 264382 [2023-08-24 05:08:21,640 INFO L136 LiptonReduction]: Total number of compositions: 327 [2023-08-24 05:08:21,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:21,643 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:21,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:21,657 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:21,657 INFO L124 PetriNetUnfolderBase]: 19/147 cut-off events. [2023-08-24 05:08:21,657 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-24 05:08:21,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:21,657 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:08:21,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:21,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:21,658 INFO L85 PathProgramCache]: Analyzing trace with hash -221858652, now seen corresponding path program 1 times [2023-08-24 05:08:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:21,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445523091] [2023-08-24 05:08:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:21,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:21,697 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:21,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:21,731 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:21,731 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:21,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 05:08:21,731 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:21,737 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:21,737 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:21,737 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 05:08:21,790 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:21,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 469 transitions, 1015 flow [2023-08-24 05:08:21,930 INFO L124 PetriNetUnfolderBase]: 64/551 cut-off events. [2023-08-24 05:08:21,941 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-24 05:08:21,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 551 events. 64/551 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2257 event pairs, 0 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 503. Up to 16 conditions per place. [2023-08-24 05:08:21,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 469 transitions, 1015 flow [2023-08-24 05:08:21,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 469 transitions, 1015 flow [2023-08-24 05:08:21,965 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:21,965 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 427 places, 469 transitions, 1015 flow [2023-08-24 05:08:21,965 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 427 places, 469 transitions, 1015 flow [2023-08-24 05:08:21,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 469 transitions, 1015 flow [2023-08-24 05:08:22,070 INFO L124 PetriNetUnfolderBase]: 64/551 cut-off events. [2023-08-24 05:08:22,070 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-24 05:08:22,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 551 events. 64/551 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2257 event pairs, 0 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 503. Up to 16 conditions per place. [2023-08-24 05:08:22,125 INFO L119 LiptonReduction]: Number of co-enabled transitions 175336 [2023-08-24 05:08:25,973 INFO L134 LiptonReduction]: Checked pairs total: 375636 [2023-08-24 05:08:25,974 INFO L136 LiptonReduction]: Total number of compositions: 368 [2023-08-24 05:08:25,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:25,976 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:25,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:25,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:25,996 INFO L124 PetriNetUnfolderBase]: 25/185 cut-off events. [2023-08-24 05:08:25,996 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-24 05:08:25,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:25,997 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:08:25,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:25,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:25,997 INFO L85 PathProgramCache]: Analyzing trace with hash -282505083, now seen corresponding path program 1 times [2023-08-24 05:08:25,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:25,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485019003] [2023-08-24 05:08:25,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:25,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:26,018 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:26,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:26,037 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:26,037 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:26,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 05:08:26,037 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:26,038 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:26,038 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:26,038 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-24 05:08:26,135 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:26,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 484 places, 532 transitions, 1160 flow [2023-08-24 05:08:26,283 INFO L124 PetriNetUnfolderBase]: 73/626 cut-off events. [2023-08-24 05:08:26,283 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-24 05:08:26,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 626 events. 73/626 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2624 event pairs, 0 based on Foata normal form. 0/536 useless extension candidates. Maximal degree in co-relation 588. Up to 18 conditions per place. [2023-08-24 05:08:26,301 INFO L82 GeneralOperation]: Start removeDead. Operand has 484 places, 532 transitions, 1160 flow [2023-08-24 05:08:26,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 484 places, 532 transitions, 1160 flow [2023-08-24 05:08:26,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:26,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 484 places, 532 transitions, 1160 flow [2023-08-24 05:08:26,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 484 places, 532 transitions, 1160 flow [2023-08-24 05:08:26,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 484 places, 532 transitions, 1160 flow [2023-08-24 05:08:26,456 INFO L124 PetriNetUnfolderBase]: 73/626 cut-off events. [2023-08-24 05:08:26,456 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-24 05:08:26,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 626 events. 73/626 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2624 event pairs, 0 based on Foata normal form. 0/536 useless extension candidates. Maximal degree in co-relation 588. Up to 18 conditions per place. [2023-08-24 05:08:26,532 INFO L119 LiptonReduction]: Number of co-enabled transitions 231632 [2023-08-24 05:08:30,636 INFO L134 LiptonReduction]: Checked pairs total: 488450 [2023-08-24 05:08:30,636 INFO L136 LiptonReduction]: Total number of compositions: 410 [2023-08-24 05:08:30,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:30,638 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:30,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:30,662 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:30,662 INFO L124 PetriNetUnfolderBase]: 27/207 cut-off events. [2023-08-24 05:08:30,662 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-24 05:08:30,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:30,662 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:08:30,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:30,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash 826540551, now seen corresponding path program 1 times [2023-08-24 05:08:30,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:30,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187669032] [2023-08-24 05:08:30,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:30,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:30,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:30,731 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:30,731 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:30,731 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:30,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 05:08:30,731 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:30,733 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:30,733 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:30,733 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-24 05:08:30,809 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:30,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 541 places, 595 transitions, 1307 flow [2023-08-24 05:08:30,972 INFO L124 PetriNetUnfolderBase]: 82/701 cut-off events. [2023-08-24 05:08:30,972 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-24 05:08:30,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 701 events. 82/701 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2977 event pairs, 0 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 674. Up to 20 conditions per place. [2023-08-24 05:08:30,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 541 places, 595 transitions, 1307 flow [2023-08-24 05:08:31,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 541 places, 595 transitions, 1307 flow [2023-08-24 05:08:31,005 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:31,005 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 541 places, 595 transitions, 1307 flow [2023-08-24 05:08:31,005 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 541 places, 595 transitions, 1307 flow [2023-08-24 05:08:31,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 541 places, 595 transitions, 1307 flow [2023-08-24 05:08:31,188 INFO L124 PetriNetUnfolderBase]: 82/701 cut-off events. [2023-08-24 05:08:31,188 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-24 05:08:31,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 701 events. 82/701 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2977 event pairs, 0 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 674. Up to 20 conditions per place. [2023-08-24 05:08:31,287 INFO L119 LiptonReduction]: Number of co-enabled transitions 295740 [2023-08-24 05:08:35,683 INFO L134 LiptonReduction]: Checked pairs total: 635952 [2023-08-24 05:08:35,683 INFO L136 LiptonReduction]: Total number of compositions: 473 [2023-08-24 05:08:35,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:35,686 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:35,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:35,716 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:35,716 INFO L124 PetriNetUnfolderBase]: 35/240 cut-off events. [2023-08-24 05:08:35,716 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-24 05:08:35,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:35,716 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:08:35,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:35,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash -423094892, now seen corresponding path program 1 times [2023-08-24 05:08:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:35,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603173976] [2023-08-24 05:08:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:35,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:35,737 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:35,755 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:35,756 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:35,756 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:35,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 05:08:35,756 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:35,757 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:35,757 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:35,757 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-24 05:08:35,825 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:35,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 598 places, 658 transitions, 1456 flow [2023-08-24 05:08:36,044 INFO L124 PetriNetUnfolderBase]: 91/776 cut-off events. [2023-08-24 05:08:36,045 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-24 05:08:36,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 776 events. 91/776 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 3355 event pairs, 0 based on Foata normal form. 0/664 useless extension candidates. Maximal degree in co-relation 761. Up to 22 conditions per place. [2023-08-24 05:08:36,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 598 places, 658 transitions, 1456 flow [2023-08-24 05:08:36,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 598 places, 658 transitions, 1456 flow [2023-08-24 05:08:36,090 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:36,090 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 598 places, 658 transitions, 1456 flow [2023-08-24 05:08:36,091 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 598 places, 658 transitions, 1456 flow [2023-08-24 05:08:36,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 598 places, 658 transitions, 1456 flow [2023-08-24 05:08:36,307 INFO L124 PetriNetUnfolderBase]: 91/776 cut-off events. [2023-08-24 05:08:36,308 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-24 05:08:36,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 862 conditions, 776 events. 91/776 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 3355 event pairs, 0 based on Foata normal form. 0/664 useless extension candidates. Maximal degree in co-relation 761. Up to 22 conditions per place. [2023-08-24 05:08:36,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 367660 [2023-08-24 05:08:41,580 INFO L134 LiptonReduction]: Checked pairs total: 779380 [2023-08-24 05:08:41,580 INFO L136 LiptonReduction]: Total number of compositions: 527 [2023-08-24 05:08:41,582 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:41,582 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:41,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:41,618 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:41,618 INFO L124 PetriNetUnfolderBase]: 37/260 cut-off events. [2023-08-24 05:08:41,618 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-24 05:08:41,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:41,619 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:08:41,619 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:41,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:41,619 INFO L85 PathProgramCache]: Analyzing trace with hash -608990272, now seen corresponding path program 1 times [2023-08-24 05:08:41,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:41,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941457049] [2023-08-24 05:08:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:41,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:41,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:41,660 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:41,660 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:41,660 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:41,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 05:08:41,660 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:41,661 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:41,661 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:41,661 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-24 05:08:41,793 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:41,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 655 places, 721 transitions, 1607 flow [2023-08-24 05:08:42,059 INFO L124 PetriNetUnfolderBase]: 100/851 cut-off events. [2023-08-24 05:08:42,059 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-24 05:08:42,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 851 events. 100/851 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 3729 event pairs, 0 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 849. Up to 24 conditions per place. [2023-08-24 05:08:42,101 INFO L82 GeneralOperation]: Start removeDead. Operand has 655 places, 721 transitions, 1607 flow [2023-08-24 05:08:42,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 655 places, 721 transitions, 1607 flow [2023-08-24 05:08:42,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:42,114 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 655 places, 721 transitions, 1607 flow [2023-08-24 05:08:42,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 655 places, 721 transitions, 1607 flow [2023-08-24 05:08:42,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 655 places, 721 transitions, 1607 flow [2023-08-24 05:08:42,365 INFO L124 PetriNetUnfolderBase]: 100/851 cut-off events. [2023-08-24 05:08:42,365 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-24 05:08:42,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 851 events. 100/851 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 3729 event pairs, 0 based on Foata normal form. 0/728 useless extension candidates. Maximal degree in co-relation 849. Up to 24 conditions per place. [2023-08-24 05:08:42,518 INFO L119 LiptonReduction]: Number of co-enabled transitions 447392 [2023-08-24 05:08:47,369 INFO L134 LiptonReduction]: Checked pairs total: 940550 [2023-08-24 05:08:47,369 INFO L136 LiptonReduction]: Total number of compositions: 574 [2023-08-24 05:08:47,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:47,371 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:47,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:47,413 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:47,413 INFO L124 PetriNetUnfolderBase]: 42/297 cut-off events. [2023-08-24 05:08:47,413 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-24 05:08:47,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:47,414 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:08:47,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:47,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:47,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2041386709, now seen corresponding path program 1 times [2023-08-24 05:08:47,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:47,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457740053] [2023-08-24 05:08:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:47,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:47,437 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:47,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:47,460 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:47,460 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:47,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 05:08:47,461 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:47,462 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:47,462 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:47,462 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-24 05:08:47,544 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:47,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 712 places, 784 transitions, 1760 flow [2023-08-24 05:08:47,854 INFO L124 PetriNetUnfolderBase]: 109/926 cut-off events. [2023-08-24 05:08:47,854 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-24 05:08:47,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 926 events. 109/926 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4109 event pairs, 0 based on Foata normal form. 0/792 useless extension candidates. Maximal degree in co-relation 938. Up to 26 conditions per place. [2023-08-24 05:08:47,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 712 places, 784 transitions, 1760 flow [2023-08-24 05:08:47,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 712 places, 784 transitions, 1760 flow [2023-08-24 05:08:47,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:47,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 712 places, 784 transitions, 1760 flow [2023-08-24 05:08:47,920 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 712 places, 784 transitions, 1760 flow [2023-08-24 05:08:47,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 712 places, 784 transitions, 1760 flow [2023-08-24 05:08:48,307 INFO L124 PetriNetUnfolderBase]: 109/926 cut-off events. [2023-08-24 05:08:48,307 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-24 05:08:48,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 926 events. 109/926 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4109 event pairs, 0 based on Foata normal form. 0/792 useless extension candidates. Maximal degree in co-relation 938. Up to 26 conditions per place. [2023-08-24 05:08:48,425 INFO L119 LiptonReduction]: Number of co-enabled transitions 534936 [2023-08-24 05:08:54,125 INFO L134 LiptonReduction]: Checked pairs total: 1128286 [2023-08-24 05:08:54,126 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-08-24 05:08:54,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:08:54,127 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:08:54,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:08:54,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:08:54,163 INFO L124 PetriNetUnfolderBase]: 44/321 cut-off events. [2023-08-24 05:08:54,163 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-24 05:08:54,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:08:54,163 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:08:54,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:08:54,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:08:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1785523453, now seen corresponding path program 1 times [2023-08-24 05:08:54,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:08:54,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820788449] [2023-08-24 05:08:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:08:54,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:08:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:54,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:08:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:08:54,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:08:54,223 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:08:54,223 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:08:54,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 05:08:54,223 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:08:54,225 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:08:54,226 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:08:54,226 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-24 05:08:54,314 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:08:54,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 769 places, 847 transitions, 1915 flow [2023-08-24 05:08:54,605 INFO L124 PetriNetUnfolderBase]: 118/1001 cut-off events. [2023-08-24 05:08:54,606 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2023-08-24 05:08:54,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1001 events. 118/1001 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4473 event pairs, 0 based on Foata normal form. 0/856 useless extension candidates. Maximal degree in co-relation 1028. Up to 28 conditions per place. [2023-08-24 05:08:54,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 769 places, 847 transitions, 1915 flow [2023-08-24 05:08:54,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 769 places, 847 transitions, 1915 flow [2023-08-24 05:08:54,658 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:08:54,658 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 769 places, 847 transitions, 1915 flow [2023-08-24 05:08:54,659 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 769 places, 847 transitions, 1915 flow [2023-08-24 05:08:54,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 769 places, 847 transitions, 1915 flow [2023-08-24 05:08:55,014 INFO L124 PetriNetUnfolderBase]: 118/1001 cut-off events. [2023-08-24 05:08:55,014 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2023-08-24 05:08:55,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 1001 events. 118/1001 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4473 event pairs, 0 based on Foata normal form. 0/856 useless extension candidates. Maximal degree in co-relation 1028. Up to 28 conditions per place. [2023-08-24 05:08:55,170 INFO L119 LiptonReduction]: Number of co-enabled transitions 630292 [2023-08-24 05:09:01,672 INFO L134 LiptonReduction]: Checked pairs total: 1341615 [2023-08-24 05:09:01,672 INFO L136 LiptonReduction]: Total number of compositions: 679 [2023-08-24 05:09:01,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:09:01,674 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:09:01,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:09:01,727 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:09:01,727 INFO L124 PetriNetUnfolderBase]: 52/353 cut-off events. [2023-08-24 05:09:01,727 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2023-08-24 05:09:01,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:09:01,727 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:09:01,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:09:01,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:09:01,728 INFO L85 PathProgramCache]: Analyzing trace with hash 127424546, now seen corresponding path program 1 times [2023-08-24 05:09:01,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:09:01,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792682394] [2023-08-24 05:09:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:09:01,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:09:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:01,755 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:09:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:01,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:09:01,793 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:09:01,793 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:09:01,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 05:09:01,794 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:09:01,795 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:09:01,795 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:09:01,795 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-24 05:09:01,891 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:09:01,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 826 places, 910 transitions, 2072 flow [2023-08-24 05:09:02,298 INFO L124 PetriNetUnfolderBase]: 127/1076 cut-off events. [2023-08-24 05:09:02,298 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-08-24 05:09:02,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 1076 events. 127/1076 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4865 event pairs, 0 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 1119. Up to 30 conditions per place. [2023-08-24 05:09:02,348 INFO L82 GeneralOperation]: Start removeDead. Operand has 826 places, 910 transitions, 2072 flow [2023-08-24 05:09:02,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 826 places, 910 transitions, 2072 flow [2023-08-24 05:09:02,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:09:02,364 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 826 places, 910 transitions, 2072 flow [2023-08-24 05:09:02,364 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 826 places, 910 transitions, 2072 flow [2023-08-24 05:09:02,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 826 places, 910 transitions, 2072 flow [2023-08-24 05:09:02,754 INFO L124 PetriNetUnfolderBase]: 127/1076 cut-off events. [2023-08-24 05:09:02,754 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-08-24 05:09:02,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 1076 events. 127/1076 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 4865 event pairs, 0 based on Foata normal form. 0/920 useless extension candidates. Maximal degree in co-relation 1119. Up to 30 conditions per place. [2023-08-24 05:09:02,922 INFO L119 LiptonReduction]: Number of co-enabled transitions 733460 [2023-08-24 05:09:09,225 INFO L134 LiptonReduction]: Checked pairs total: 1586939 [2023-08-24 05:09:09,225 INFO L136 LiptonReduction]: Total number of compositions: 725 [2023-08-24 05:09:09,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:09:09,226 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:09:09,227 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:09:09,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:09:09,273 INFO L124 PetriNetUnfolderBase]: 55/383 cut-off events. [2023-08-24 05:09:09,273 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-08-24 05:09:09,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:09:09,274 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:09:09,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:09:09,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:09:09,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1402274288, now seen corresponding path program 1 times [2023-08-24 05:09:09,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:09:09,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022903686] [2023-08-24 05:09:09,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:09:09,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:09:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:09,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:09:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:09,336 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:09:09,336 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:09:09,336 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:09:09,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 05:09:09,336 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:09:09,337 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:09:09,337 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:09:09,337 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-24 05:09:09,432 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:09:09,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 883 places, 973 transitions, 2231 flow [2023-08-24 05:09:09,823 INFO L124 PetriNetUnfolderBase]: 136/1151 cut-off events. [2023-08-24 05:09:09,823 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2023-08-24 05:09:09,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 1151 events. 136/1151 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 5240 event pairs, 0 based on Foata normal form. 0/984 useless extension candidates. Maximal degree in co-relation 1211. Up to 32 conditions per place. [2023-08-24 05:09:09,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 883 places, 973 transitions, 2231 flow [2023-08-24 05:09:09,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 883 places, 973 transitions, 2231 flow [2023-08-24 05:09:09,893 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:09:09,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 883 places, 973 transitions, 2231 flow [2023-08-24 05:09:09,893 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 883 places, 973 transitions, 2231 flow [2023-08-24 05:09:09,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 883 places, 973 transitions, 2231 flow [2023-08-24 05:09:10,231 INFO L124 PetriNetUnfolderBase]: 136/1151 cut-off events. [2023-08-24 05:09:10,231 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2023-08-24 05:09:10,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1317 conditions, 1151 events. 136/1151 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 5240 event pairs, 0 based on Foata normal form. 0/984 useless extension candidates. Maximal degree in co-relation 1211. Up to 32 conditions per place. [2023-08-24 05:09:10,438 INFO L119 LiptonReduction]: Number of co-enabled transitions 844440 [2023-08-24 05:09:18,425 INFO L134 LiptonReduction]: Checked pairs total: 1824903 [2023-08-24 05:09:18,425 INFO L136 LiptonReduction]: Total number of compositions: 780 [2023-08-24 05:09:18,427 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:09:18,427 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:09:18,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:09:18,478 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:09:18,478 INFO L124 PetriNetUnfolderBase]: 60/405 cut-off events. [2023-08-24 05:09:18,478 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2023-08-24 05:09:18,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:09:18,478 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:09:18,478 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:09:18,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:09:18,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1657160077, now seen corresponding path program 1 times [2023-08-24 05:09:18,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:09:18,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894269068] [2023-08-24 05:09:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:09:18,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:09:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:18,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:09:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:18,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:09:18,528 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:09:18,528 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:09:18,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 05:09:18,529 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:09:18,529 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:09:18,529 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:09:18,529 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-08-24 05:09:18,638 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:09:18,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 940 places, 1036 transitions, 2392 flow [2023-08-24 05:09:19,051 INFO L124 PetriNetUnfolderBase]: 145/1226 cut-off events. [2023-08-24 05:09:19,051 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-24 05:09:19,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 1226 events. 145/1226 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 5607 event pairs, 0 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 1304. Up to 34 conditions per place. [2023-08-24 05:09:19,119 INFO L82 GeneralOperation]: Start removeDead. Operand has 940 places, 1036 transitions, 2392 flow [2023-08-24 05:09:19,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 940 places, 1036 transitions, 2392 flow [2023-08-24 05:09:19,139 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:09:19,139 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 940 places, 1036 transitions, 2392 flow [2023-08-24 05:09:19,139 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 940 places, 1036 transitions, 2392 flow [2023-08-24 05:09:19,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 940 places, 1036 transitions, 2392 flow [2023-08-24 05:09:19,548 INFO L124 PetriNetUnfolderBase]: 145/1226 cut-off events. [2023-08-24 05:09:19,548 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-24 05:09:19,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1411 conditions, 1226 events. 145/1226 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 5607 event pairs, 0 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 1304. Up to 34 conditions per place. [2023-08-24 05:09:19,773 INFO L119 LiptonReduction]: Number of co-enabled transitions 963232 [2023-08-24 05:09:27,453 INFO L134 LiptonReduction]: Checked pairs total: 2061306 [2023-08-24 05:09:27,453 INFO L136 LiptonReduction]: Total number of compositions: 820 [2023-08-24 05:09:27,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:09:27,455 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:09:27,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:09:27,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:09:27,525 INFO L124 PetriNetUnfolderBase]: 66/449 cut-off events. [2023-08-24 05:09:27,525 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-24 05:09:27,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:09:27,525 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:09:27,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:09:27,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:09:27,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1701743203, now seen corresponding path program 1 times [2023-08-24 05:09:27,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:09:27,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979740714] [2023-08-24 05:09:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:09:27,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:09:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:27,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:09:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:27,635 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:09:27,635 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:09:27,635 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:09:27,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 05:09:27,636 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:09:27,636 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:09:27,636 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:09:27,636 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-08-24 05:09:27,744 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:09:27,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 997 places, 1099 transitions, 2555 flow [2023-08-24 05:09:28,191 INFO L124 PetriNetUnfolderBase]: 154/1301 cut-off events. [2023-08-24 05:09:28,191 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-08-24 05:09:28,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 1301 events. 154/1301 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 6007 event pairs, 0 based on Foata normal form. 0/1112 useless extension candidates. Maximal degree in co-relation 1398. Up to 36 conditions per place. [2023-08-24 05:09:28,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 997 places, 1099 transitions, 2555 flow [2023-08-24 05:09:28,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 997 places, 1099 transitions, 2555 flow [2023-08-24 05:09:28,288 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:09:28,288 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 997 places, 1099 transitions, 2555 flow [2023-08-24 05:09:28,288 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 997 places, 1099 transitions, 2555 flow [2023-08-24 05:09:28,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 997 places, 1099 transitions, 2555 flow [2023-08-24 05:09:28,725 INFO L124 PetriNetUnfolderBase]: 154/1301 cut-off events. [2023-08-24 05:09:28,725 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-08-24 05:09:28,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1506 conditions, 1301 events. 154/1301 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 6007 event pairs, 0 based on Foata normal form. 0/1112 useless extension candidates. Maximal degree in co-relation 1398. Up to 36 conditions per place. [2023-08-24 05:09:29,112 INFO L119 LiptonReduction]: Number of co-enabled transitions 1089836 [2023-08-24 05:09:37,651 INFO L134 LiptonReduction]: Checked pairs total: 2316243 [2023-08-24 05:09:37,651 INFO L136 LiptonReduction]: Total number of compositions: 882 [2023-08-24 05:09:37,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:09:37,652 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:09:37,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:09:37,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:09:37,720 INFO L124 PetriNetUnfolderBase]: 68/465 cut-off events. [2023-08-24 05:09:37,720 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-08-24 05:09:37,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:09:37,721 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:09:37,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:09:37,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:09:37,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1644266573, now seen corresponding path program 1 times [2023-08-24 05:09:37,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:09:37,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252202888] [2023-08-24 05:09:37,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:09:37,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:09:37,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:37,753 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:09:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:37,781 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:09:37,781 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:09:37,781 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:09:37,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 05:09:37,782 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:09:37,782 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:09:37,782 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:09:37,782 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-08-24 05:09:37,899 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:09:37,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1054 places, 1162 transitions, 2720 flow [2023-08-24 05:09:38,443 INFO L124 PetriNetUnfolderBase]: 163/1376 cut-off events. [2023-08-24 05:09:38,443 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2023-08-24 05:09:38,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 1376 events. 163/1376 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 6358 event pairs, 0 based on Foata normal form. 0/1176 useless extension candidates. Maximal degree in co-relation 1493. Up to 38 conditions per place. [2023-08-24 05:09:38,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 1054 places, 1162 transitions, 2720 flow [2023-08-24 05:09:38,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1054 places, 1162 transitions, 2720 flow [2023-08-24 05:09:38,541 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:09:38,541 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1054 places, 1162 transitions, 2720 flow [2023-08-24 05:09:38,541 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1054 places, 1162 transitions, 2720 flow [2023-08-24 05:09:38,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1054 places, 1162 transitions, 2720 flow [2023-08-24 05:09:39,019 INFO L124 PetriNetUnfolderBase]: 163/1376 cut-off events. [2023-08-24 05:09:39,019 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2023-08-24 05:09:39,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 1376 events. 163/1376 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 6358 event pairs, 0 based on Foata normal form. 0/1176 useless extension candidates. Maximal degree in co-relation 1493. Up to 38 conditions per place. [2023-08-24 05:09:39,473 INFO L119 LiptonReduction]: Number of co-enabled transitions 1224252 [2023-08-24 05:09:48,550 INFO L134 LiptonReduction]: Checked pairs total: 2620887 [2023-08-24 05:09:48,551 INFO L136 LiptonReduction]: Total number of compositions: 933 [2023-08-24 05:09:48,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:09:48,552 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:09:48,553 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:09:48,632 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:09:48,632 INFO L124 PetriNetUnfolderBase]: 78/509 cut-off events. [2023-08-24 05:09:48,632 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2023-08-24 05:09:48,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:09:48,632 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:09:48,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:09:48,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:09:48,633 INFO L85 PathProgramCache]: Analyzing trace with hash -520845519, now seen corresponding path program 1 times [2023-08-24 05:09:48,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:09:48,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131060373] [2023-08-24 05:09:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:09:48,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:09:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:48,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:09:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:09:48,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:09:48,692 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:09:48,692 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:09:48,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 05:09:48,692 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:09:48,693 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:09:48,693 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:09:48,693 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-08-24 05:09:48,822 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:09:48,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1111 places, 1225 transitions, 2887 flow [2023-08-24 05:09:49,441 INFO L124 PetriNetUnfolderBase]: 172/1451 cut-off events. [2023-08-24 05:09:49,441 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-08-24 05:09:49,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1451 events. 172/1451 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 6735 event pairs, 0 based on Foata normal form. 0/1240 useless extension candidates. Maximal degree in co-relation 1589. Up to 40 conditions per place. [2023-08-24 05:09:49,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 1111 places, 1225 transitions, 2887 flow [2023-08-24 05:09:49,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1111 places, 1225 transitions, 2887 flow [2023-08-24 05:09:49,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:09:49,565 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1111 places, 1225 transitions, 2887 flow [2023-08-24 05:09:49,566 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1111 places, 1225 transitions, 2887 flow [2023-08-24 05:09:49,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1111 places, 1225 transitions, 2887 flow [2023-08-24 05:09:50,135 INFO L124 PetriNetUnfolderBase]: 172/1451 cut-off events. [2023-08-24 05:09:50,135 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-08-24 05:09:50,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1451 events. 172/1451 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 6735 event pairs, 0 based on Foata normal form. 0/1240 useless extension candidates. Maximal degree in co-relation 1589. Up to 40 conditions per place. [2023-08-24 05:09:50,459 INFO L119 LiptonReduction]: Number of co-enabled transitions 1366480 [2023-08-24 05:10:00,796 INFO L134 LiptonReduction]: Checked pairs total: 2910520 [2023-08-24 05:10:00,796 INFO L136 LiptonReduction]: Total number of compositions: 974 [2023-08-24 05:10:00,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:10:00,798 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:10:00,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:10:00,885 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:10:00,886 INFO L124 PetriNetUnfolderBase]: 78/532 cut-off events. [2023-08-24 05:10:00,886 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-08-24 05:10:00,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:10:00,886 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:10:00,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:10:00,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:10:00,886 INFO L85 PathProgramCache]: Analyzing trace with hash 909094616, now seen corresponding path program 1 times [2023-08-24 05:10:00,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:10:00,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158314838] [2023-08-24 05:10:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:10:00,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:10:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:10:00,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:10:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:10:00,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:10:00,953 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:10:00,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:10:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-24 05:10:00,953 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:10:00,953 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:10:00,953 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:10:00,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-08-24 05:10:01,068 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:10:01,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1168 places, 1288 transitions, 3056 flow [2023-08-24 05:10:01,672 INFO L124 PetriNetUnfolderBase]: 181/1526 cut-off events. [2023-08-24 05:10:01,673 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-24 05:10:01,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 1526 events. 181/1526 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 7128 event pairs, 0 based on Foata normal form. 0/1304 useless extension candidates. Maximal degree in co-relation 1686. Up to 42 conditions per place. [2023-08-24 05:10:01,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 1168 places, 1288 transitions, 3056 flow [2023-08-24 05:10:01,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1168 places, 1288 transitions, 3056 flow [2023-08-24 05:10:01,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:10:01,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1168 places, 1288 transitions, 3056 flow [2023-08-24 05:10:01,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1168 places, 1288 transitions, 3056 flow [2023-08-24 05:10:01,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1168 places, 1288 transitions, 3056 flow [2023-08-24 05:10:02,401 INFO L124 PetriNetUnfolderBase]: 181/1526 cut-off events. [2023-08-24 05:10:02,402 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-24 05:10:02,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1797 conditions, 1526 events. 181/1526 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 7128 event pairs, 0 based on Foata normal form. 0/1304 useless extension candidates. Maximal degree in co-relation 1686. Up to 42 conditions per place. [2023-08-24 05:10:02,881 INFO L119 LiptonReduction]: Number of co-enabled transitions 1516520 [2023-08-24 05:10:13,351 INFO L134 LiptonReduction]: Checked pairs total: 3237949 [2023-08-24 05:10:13,351 INFO L136 LiptonReduction]: Total number of compositions: 1025 [2023-08-24 05:10:13,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:10:13,353 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:10:13,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:10:13,455 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:10:13,455 INFO L124 PetriNetUnfolderBase]: 86/564 cut-off events. [2023-08-24 05:10:13,455 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-24 05:10:13,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:10:13,455 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:10:13,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:10:13,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:10:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1441880411, now seen corresponding path program 1 times [2023-08-24 05:10:13,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:10:13,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842117913] [2023-08-24 05:10:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:10:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:10:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:10:13,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:10:13,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:10:13,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:10:13,525 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:10:13,525 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:10:13,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-24 05:10:13,526 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:10:13,527 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:10:13,527 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:10:13,527 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-08-24 05:10:13,663 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:10:13,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1225 places, 1351 transitions, 3227 flow [2023-08-24 05:10:14,400 INFO L124 PetriNetUnfolderBase]: 190/1601 cut-off events. [2023-08-24 05:10:14,400 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2023-08-24 05:10:14,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 1601 events. 190/1601 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 7474 event pairs, 0 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 1784. Up to 44 conditions per place. [2023-08-24 05:10:14,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 1225 places, 1351 transitions, 3227 flow [2023-08-24 05:10:14,519 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1225 places, 1351 transitions, 3227 flow [2023-08-24 05:10:14,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:10:14,520 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1225 places, 1351 transitions, 3227 flow [2023-08-24 05:10:14,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1225 places, 1351 transitions, 3227 flow [2023-08-24 05:10:14,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1225 places, 1351 transitions, 3227 flow [2023-08-24 05:10:15,169 INFO L124 PetriNetUnfolderBase]: 190/1601 cut-off events. [2023-08-24 05:10:15,169 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2023-08-24 05:10:15,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1896 conditions, 1601 events. 190/1601 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 7474 event pairs, 0 based on Foata normal form. 0/1368 useless extension candidates. Maximal degree in co-relation 1784. Up to 44 conditions per place. [2023-08-24 05:10:15,617 INFO L119 LiptonReduction]: Number of co-enabled transitions 1674372 [2023-08-24 05:10:26,811 INFO L134 LiptonReduction]: Checked pairs total: 3555833 [2023-08-24 05:10:26,811 INFO L136 LiptonReduction]: Total number of compositions: 1067 [2023-08-24 05:10:26,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:10:26,814 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:10:26,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:10:26,968 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:10:26,968 INFO L124 PetriNetUnfolderBase]: 86/591 cut-off events. [2023-08-24 05:10:26,968 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2023-08-24 05:10:26,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:10:26,968 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:10:26,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:10:26,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:10:26,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1988911458, now seen corresponding path program 1 times [2023-08-24 05:10:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:10:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501917019] [2023-08-24 05:10:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:10:26,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:10:27,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:10:27,007 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:10:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:10:27,058 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:10:27,058 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:10:27,058 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:10:27,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-24 05:10:27,059 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:10:27,059 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:10:27,059 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:10:27,059 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-08-24 05:10:27,203 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:10:27,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1282 places, 1414 transitions, 3400 flow [2023-08-24 05:10:27,936 INFO L124 PetriNetUnfolderBase]: 199/1676 cut-off events. [2023-08-24 05:10:27,936 INFO L125 PetriNetUnfolderBase]: For 2002/2002 co-relation queries the response was YES. [2023-08-24 05:10:28,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 1676 events. 199/1676 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 7881 event pairs, 0 based on Foata normal form. 0/1432 useless extension candidates. Maximal degree in co-relation 1883. Up to 46 conditions per place. [2023-08-24 05:10:28,074 INFO L82 GeneralOperation]: Start removeDead. Operand has 1282 places, 1414 transitions, 3400 flow [2023-08-24 05:10:28,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1282 places, 1414 transitions, 3400 flow [2023-08-24 05:10:28,111 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:10:28,111 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1282 places, 1414 transitions, 3400 flow [2023-08-24 05:10:28,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1282 places, 1414 transitions, 3400 flow [2023-08-24 05:10:28,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1282 places, 1414 transitions, 3400 flow [2023-08-24 05:10:28,922 INFO L124 PetriNetUnfolderBase]: 199/1676 cut-off events. [2023-08-24 05:10:28,923 INFO L125 PetriNetUnfolderBase]: For 2002/2002 co-relation queries the response was YES. [2023-08-24 05:10:29,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 1676 events. 199/1676 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 7881 event pairs, 0 based on Foata normal form. 0/1432 useless extension candidates. Maximal degree in co-relation 1883. Up to 46 conditions per place. [2023-08-24 05:10:29,373 INFO L119 LiptonReduction]: Number of co-enabled transitions 1840036 [2023-08-24 05:10:41,314 INFO L134 LiptonReduction]: Checked pairs total: 3933991 [2023-08-24 05:10:41,314 INFO L136 LiptonReduction]: Total number of compositions: 1117 [2023-08-24 05:10:41,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:10:41,315 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:10:41,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:10:41,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:10:41,435 INFO L124 PetriNetUnfolderBase]: 90/617 cut-off events. [2023-08-24 05:10:41,435 INFO L125 PetriNetUnfolderBase]: For 2002/2002 co-relation queries the response was YES. [2023-08-24 05:10:41,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:10:41,435 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:10:41,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:10:41,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:10:41,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1604119119, now seen corresponding path program 1 times [2023-08-24 05:10:41,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:10:41,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81934956] [2023-08-24 05:10:41,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:10:41,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:10:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:10:41,472 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:10:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:10:41,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:10:41,516 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:10:41,516 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:10:41,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-24 05:10:41,517 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:10:41,517 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:10:41,517 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:10:41,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-08-24 05:10:41,675 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:10:41,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1339 places, 1477 transitions, 3575 flow [2023-08-24 05:10:42,528 INFO L124 PetriNetUnfolderBase]: 208/1751 cut-off events. [2023-08-24 05:10:42,528 INFO L125 PetriNetUnfolderBase]: For 2277/2277 co-relation queries the response was YES. [2023-08-24 05:10:42,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 1751 events. 208/1751 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 8236 event pairs, 0 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 1983. Up to 48 conditions per place. [2023-08-24 05:10:42,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 1339 places, 1477 transitions, 3575 flow [2023-08-24 05:10:42,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1339 places, 1477 transitions, 3575 flow [2023-08-24 05:10:42,696 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:10:42,697 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1339 places, 1477 transitions, 3575 flow [2023-08-24 05:10:42,697 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1339 places, 1477 transitions, 3575 flow [2023-08-24 05:10:42,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1339 places, 1477 transitions, 3575 flow [2023-08-24 05:10:43,498 INFO L124 PetriNetUnfolderBase]: 208/1751 cut-off events. [2023-08-24 05:10:43,498 INFO L125 PetriNetUnfolderBase]: For 2277/2277 co-relation queries the response was YES. [2023-08-24 05:10:43,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2097 conditions, 1751 events. 208/1751 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 8236 event pairs, 0 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 1983. Up to 48 conditions per place. [2023-08-24 05:10:44,057 INFO L119 LiptonReduction]: Number of co-enabled transitions 2013512 [2023-08-24 05:10:56,922 INFO L134 LiptonReduction]: Checked pairs total: 4273711 [2023-08-24 05:10:56,922 INFO L136 LiptonReduction]: Total number of compositions: 1183 [2023-08-24 05:10:56,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:10:56,924 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:10:56,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:10:57,053 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:10:57,054 INFO L124 PetriNetUnfolderBase]: 100/657 cut-off events. [2023-08-24 05:10:57,054 INFO L125 PetriNetUnfolderBase]: For 2277/2277 co-relation queries the response was YES. [2023-08-24 05:10:57,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:10:57,054 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:10:57,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:10:57,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:10:57,054 INFO L85 PathProgramCache]: Analyzing trace with hash 488388468, now seen corresponding path program 1 times [2023-08-24 05:10:57,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:10:57,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483635319] [2023-08-24 05:10:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:10:57,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:10:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:10:57,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:10:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:10:57,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:10:57,155 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:10:57,156 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:10:57,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-24 05:10:57,156 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:10:57,156 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:10:57,156 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:10:57,156 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-08-24 05:10:57,315 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:10:57,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1396 places, 1540 transitions, 3752 flow [2023-08-24 05:10:58,304 INFO L124 PetriNetUnfolderBase]: 217/1826 cut-off events. [2023-08-24 05:10:58,304 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2023-08-24 05:10:58,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 1826 events. 217/1826 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 8543 event pairs, 0 based on Foata normal form. 0/1560 useless extension candidates. Maximal degree in co-relation 2084. Up to 50 conditions per place. [2023-08-24 05:10:58,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 1396 places, 1540 transitions, 3752 flow [2023-08-24 05:10:58,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1396 places, 1540 transitions, 3752 flow [2023-08-24 05:10:58,433 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:10:58,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1396 places, 1540 transitions, 3752 flow [2023-08-24 05:10:58,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1396 places, 1540 transitions, 3752 flow [2023-08-24 05:10:58,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1396 places, 1540 transitions, 3752 flow [2023-08-24 05:10:59,286 INFO L124 PetriNetUnfolderBase]: 217/1826 cut-off events. [2023-08-24 05:10:59,286 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2023-08-24 05:10:59,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 1826 events. 217/1826 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 8543 event pairs, 0 based on Foata normal form. 0/1560 useless extension candidates. Maximal degree in co-relation 2084. Up to 50 conditions per place. [2023-08-24 05:10:59,903 INFO L119 LiptonReduction]: Number of co-enabled transitions 2194800 [2023-08-24 05:11:13,018 INFO L134 LiptonReduction]: Checked pairs total: 4750852 [2023-08-24 05:11:13,018 INFO L136 LiptonReduction]: Total number of compositions: 1227 [2023-08-24 05:11:13,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:11:13,020 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:11:13,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:11:13,165 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:11:13,165 INFO L124 PetriNetUnfolderBase]: 106/688 cut-off events. [2023-08-24 05:11:13,165 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2023-08-24 05:11:13,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:11:13,165 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:11:13,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:11:13,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:11:13,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1429520027, now seen corresponding path program 1 times [2023-08-24 05:11:13,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:11:13,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850621750] [2023-08-24 05:11:13,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:11:13,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:11:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:11:13,206 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:11:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:11:13,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:11:13,253 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:11:13,253 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:11:13,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-24 05:11:13,254 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:11:13,254 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:11:13,254 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:11:13,254 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-08-24 05:11:13,407 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:11:13,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1453 places, 1603 transitions, 3931 flow [2023-08-24 05:11:14,514 INFO L124 PetriNetUnfolderBase]: 226/1901 cut-off events. [2023-08-24 05:11:14,514 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2023-08-24 05:11:14,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2302 conditions, 1901 events. 226/1901 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 8975 event pairs, 0 based on Foata normal form. 0/1624 useless extension candidates. Maximal degree in co-relation 2186. Up to 52 conditions per place. [2023-08-24 05:11:14,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 1453 places, 1603 transitions, 3931 flow [2023-08-24 05:11:14,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1453 places, 1603 transitions, 3931 flow [2023-08-24 05:11:14,656 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:11:14,656 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1453 places, 1603 transitions, 3931 flow [2023-08-24 05:11:14,656 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1453 places, 1603 transitions, 3931 flow [2023-08-24 05:11:14,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1453 places, 1603 transitions, 3931 flow [2023-08-24 05:11:15,648 INFO L124 PetriNetUnfolderBase]: 226/1901 cut-off events. [2023-08-24 05:11:15,648 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2023-08-24 05:11:15,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2302 conditions, 1901 events. 226/1901 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 8975 event pairs, 0 based on Foata normal form. 0/1624 useless extension candidates. Maximal degree in co-relation 2186. Up to 52 conditions per place. [2023-08-24 05:11:16,335 INFO L119 LiptonReduction]: Number of co-enabled transitions 2383900 [2023-08-24 05:11:29,938 INFO L134 LiptonReduction]: Checked pairs total: 5066667 [2023-08-24 05:11:29,938 INFO L136 LiptonReduction]: Total number of compositions: 1277 [2023-08-24 05:11:29,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:11:29,940 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:11:29,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:11:30,092 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:11:30,092 INFO L124 PetriNetUnfolderBase]: 103/705 cut-off events. [2023-08-24 05:11:30,092 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2023-08-24 05:11:30,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:11:30,092 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:11:30,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:11:30,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:11:30,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1833648452, now seen corresponding path program 1 times [2023-08-24 05:11:30,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:11:30,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444466417] [2023-08-24 05:11:30,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:11:30,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:11:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:11:30,134 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:11:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:11:30,177 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:11:30,177 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:11:30,178 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:11:30,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-24 05:11:30,178 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:11:30,178 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:11:30,178 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:11:30,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-08-24 05:11:30,341 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:11:30,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1510 places, 1666 transitions, 4112 flow [2023-08-24 05:11:31,460 INFO L124 PetriNetUnfolderBase]: 235/1976 cut-off events. [2023-08-24 05:11:31,461 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2023-08-24 05:11:31,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 1976 events. 235/1976 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 9363 event pairs, 0 based on Foata normal form. 0/1688 useless extension candidates. Maximal degree in co-relation 2289. Up to 54 conditions per place. [2023-08-24 05:11:31,612 INFO L82 GeneralOperation]: Start removeDead. Operand has 1510 places, 1666 transitions, 4112 flow [2023-08-24 05:11:31,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1510 places, 1666 transitions, 4112 flow [2023-08-24 05:11:31,653 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:11:31,653 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1510 places, 1666 transitions, 4112 flow [2023-08-24 05:11:31,653 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1510 places, 1666 transitions, 4112 flow [2023-08-24 05:11:31,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1510 places, 1666 transitions, 4112 flow [2023-08-24 05:11:32,756 INFO L124 PetriNetUnfolderBase]: 235/1976 cut-off events. [2023-08-24 05:11:32,756 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2023-08-24 05:11:32,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 1976 events. 235/1976 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 9363 event pairs, 0 based on Foata normal form. 0/1688 useless extension candidates. Maximal degree in co-relation 2289. Up to 54 conditions per place. [2023-08-24 05:11:33,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 2580812 [2023-08-24 05:11:48,217 INFO L134 LiptonReduction]: Checked pairs total: 5625808 [2023-08-24 05:11:48,218 INFO L136 LiptonReduction]: Total number of compositions: 1319 [2023-08-24 05:11:48,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:11:48,219 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:11:48,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:11:48,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:11:48,392 INFO L124 PetriNetUnfolderBase]: 114/753 cut-off events. [2023-08-24 05:11:48,392 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2023-08-24 05:11:48,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:11:48,392 INFO L208 CegarLoopForPetriNet]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:11:48,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:11:48,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:11:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1230829260, now seen corresponding path program 1 times [2023-08-24 05:11:48,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:11:48,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137143997] [2023-08-24 05:11:48,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:11:48,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:11:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:11:48,440 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:11:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:11:48,489 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:11:48,490 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:11:48,490 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:11:48,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-24 05:11:48,490 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:11:48,492 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:11:48,492 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:11:48,492 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-08-24 05:11:48,665 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:11:48,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1567 places, 1729 transitions, 4295 flow [2023-08-24 05:11:50,259 INFO L124 PetriNetUnfolderBase]: 244/2051 cut-off events. [2023-08-24 05:11:50,259 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-24 05:11:50,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2511 conditions, 2051 events. 244/2051 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 9772 event pairs, 0 based on Foata normal form. 0/1752 useless extension candidates. Maximal degree in co-relation 2393. Up to 56 conditions per place. [2023-08-24 05:11:50,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 1567 places, 1729 transitions, 4295 flow [2023-08-24 05:11:50,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1567 places, 1729 transitions, 4295 flow [2023-08-24 05:11:50,421 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:11:50,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1567 places, 1729 transitions, 4295 flow [2023-08-24 05:11:50,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1567 places, 1729 transitions, 4295 flow [2023-08-24 05:11:50,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1567 places, 1729 transitions, 4295 flow [2023-08-24 05:11:51,887 INFO L124 PetriNetUnfolderBase]: 244/2051 cut-off events. [2023-08-24 05:11:51,887 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-24 05:11:52,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2511 conditions, 2051 events. 244/2051 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 9772 event pairs, 0 based on Foata normal form. 0/1752 useless extension candidates. Maximal degree in co-relation 2393. Up to 56 conditions per place. [2023-08-24 05:11:52,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 2785536 [2023-08-24 05:12:08,429 INFO L134 LiptonReduction]: Checked pairs total: 6047258 [2023-08-24 05:12:08,429 INFO L136 LiptonReduction]: Total number of compositions: 1376 [2023-08-24 05:12:08,431 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:12:08,431 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:12:08,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:12:08,610 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:12:08,610 INFO L124 PetriNetUnfolderBase]: 118/777 cut-off events. [2023-08-24 05:12:08,610 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-24 05:12:08,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:12:08,610 INFO L208 CegarLoopForPetriNet]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:12:08,610 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:12:08,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:12:08,611 INFO L85 PathProgramCache]: Analyzing trace with hash 299161815, now seen corresponding path program 1 times [2023-08-24 05:12:08,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:12:08,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626363108] [2023-08-24 05:12:08,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:12:08,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:12:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:12:08,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:12:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:12:08,700 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:12:08,700 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:12:08,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:12:08,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-24 05:12:08,700 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:12:08,701 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:12:08,701 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:12:08,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-08-24 05:12:08,929 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:12:08,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1624 places, 1792 transitions, 4480 flow [2023-08-24 05:12:10,408 INFO L124 PetriNetUnfolderBase]: 253/2126 cut-off events. [2023-08-24 05:12:10,409 INFO L125 PetriNetUnfolderBase]: For 4032/4032 co-relation queries the response was YES. [2023-08-24 05:12:10,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 2126 events. 253/2126 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 10053 event pairs, 0 based on Foata normal form. 0/1816 useless extension candidates. Maximal degree in co-relation 2498. Up to 58 conditions per place. [2023-08-24 05:12:10,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 1624 places, 1792 transitions, 4480 flow [2023-08-24 05:12:10,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1624 places, 1792 transitions, 4480 flow [2023-08-24 05:12:10,608 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:12:10,608 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1624 places, 1792 transitions, 4480 flow [2023-08-24 05:12:10,609 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1624 places, 1792 transitions, 4480 flow [2023-08-24 05:12:10,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1624 places, 1792 transitions, 4480 flow [2023-08-24 05:12:12,135 INFO L124 PetriNetUnfolderBase]: 253/2126 cut-off events. [2023-08-24 05:12:12,135 INFO L125 PetriNetUnfolderBase]: For 4032/4032 co-relation queries the response was YES. [2023-08-24 05:12:12,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 2126 events. 253/2126 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 10053 event pairs, 0 based on Foata normal form. 0/1816 useless extension candidates. Maximal degree in co-relation 2498. Up to 58 conditions per place. [2023-08-24 05:12:12,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 2998072 [2023-08-24 05:12:29,183 INFO L134 LiptonReduction]: Checked pairs total: 6551977 [2023-08-24 05:12:29,183 INFO L136 LiptonReduction]: Total number of compositions: 1431 [2023-08-24 05:12:29,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:12:29,185 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:12:29,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:12:29,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:12:29,438 INFO L124 PetriNetUnfolderBase]: 122/807 cut-off events. [2023-08-24 05:12:29,438 INFO L125 PetriNetUnfolderBase]: For 4032/4032 co-relation queries the response was YES. [2023-08-24 05:12:29,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:12:29,439 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:12:29,439 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:12:29,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:12:29,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1332006675, now seen corresponding path program 1 times [2023-08-24 05:12:29,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:12:29,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839434236] [2023-08-24 05:12:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:12:29,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:12:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:12:29,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:12:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:12:29,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:12:29,545 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:12:29,545 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:12:29,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-24 05:12:29,545 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:12:29,545 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:12:29,546 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:12:29,546 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-08-24 05:12:29,728 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:12:29,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1681 places, 1855 transitions, 4667 flow [2023-08-24 05:12:31,271 INFO L124 PetriNetUnfolderBase]: 262/2201 cut-off events. [2023-08-24 05:12:31,272 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-08-24 05:12:31,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2724 conditions, 2201 events. 262/2201 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 10438 event pairs, 0 based on Foata normal form. 0/1880 useless extension candidates. Maximal degree in co-relation 2604. Up to 60 conditions per place. [2023-08-24 05:12:31,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 1681 places, 1855 transitions, 4667 flow [2023-08-24 05:12:31,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1681 places, 1855 transitions, 4667 flow [2023-08-24 05:12:31,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:12:31,493 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1681 places, 1855 transitions, 4667 flow [2023-08-24 05:12:31,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1681 places, 1855 transitions, 4667 flow [2023-08-24 05:12:31,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1681 places, 1855 transitions, 4667 flow [2023-08-24 05:12:33,047 INFO L124 PetriNetUnfolderBase]: 262/2201 cut-off events. [2023-08-24 05:12:33,048 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-08-24 05:12:33,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2724 conditions, 2201 events. 262/2201 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 10438 event pairs, 0 based on Foata normal form. 0/1880 useless extension candidates. Maximal degree in co-relation 2604. Up to 60 conditions per place. [2023-08-24 05:12:33,995 INFO L119 LiptonReduction]: Number of co-enabled transitions 3218420 [2023-08-24 05:12:50,867 INFO L134 LiptonReduction]: Checked pairs total: 6841439 [2023-08-24 05:12:50,868 INFO L136 LiptonReduction]: Total number of compositions: 1469 [2023-08-24 05:12:50,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:12:50,870 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:12:50,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:12:51,082 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:12:51,083 INFO L124 PetriNetUnfolderBase]: 123/827 cut-off events. [2023-08-24 05:12:51,083 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-08-24 05:12:51,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:12:51,083 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:12:51,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:12:51,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:12:51,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1437393751, now seen corresponding path program 1 times [2023-08-24 05:12:51,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:12:51,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815538730] [2023-08-24 05:12:51,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:12:51,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:12:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:12:51,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:12:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:12:51,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:12:51,196 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:12:51,196 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:12:51,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-24 05:12:51,196 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:12:51,196 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:12:51,197 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:12:51,197 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-08-24 05:12:51,477 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:12:51,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1738 places, 1918 transitions, 4856 flow [2023-08-24 05:12:53,194 INFO L124 PetriNetUnfolderBase]: 271/2276 cut-off events. [2023-08-24 05:12:53,195 INFO L125 PetriNetUnfolderBase]: For 4930/4930 co-relation queries the response was YES. [2023-08-24 05:12:53,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 2276 events. 271/2276 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 10819 event pairs, 0 based on Foata normal form. 0/1944 useless extension candidates. Maximal degree in co-relation 2711. Up to 62 conditions per place. [2023-08-24 05:12:53,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 1738 places, 1918 transitions, 4856 flow [2023-08-24 05:12:53,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1738 places, 1918 transitions, 4856 flow [2023-08-24 05:12:53,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:12:53,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1738 places, 1918 transitions, 4856 flow [2023-08-24 05:12:53,445 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1738 places, 1918 transitions, 4856 flow [2023-08-24 05:12:53,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1738 places, 1918 transitions, 4856 flow [2023-08-24 05:12:55,355 INFO L124 PetriNetUnfolderBase]: 271/2276 cut-off events. [2023-08-24 05:12:55,355 INFO L125 PetriNetUnfolderBase]: For 4930/4930 co-relation queries the response was YES. [2023-08-24 05:12:55,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 2276 events. 271/2276 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 10819 event pairs, 0 based on Foata normal form. 0/1944 useless extension candidates. Maximal degree in co-relation 2711. Up to 62 conditions per place. [2023-08-24 05:12:56,225 INFO L119 LiptonReduction]: Number of co-enabled transitions 3446580 [2023-08-24 05:13:13,438 INFO L134 LiptonReduction]: Checked pairs total: 7413504 [2023-08-24 05:13:13,438 INFO L136 LiptonReduction]: Total number of compositions: 1505 [2023-08-24 05:13:13,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:13:13,440 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:13:13,440 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:13:13,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:13:13,660 INFO L124 PetriNetUnfolderBase]: 126/857 cut-off events. [2023-08-24 05:13:13,660 INFO L125 PetriNetUnfolderBase]: For 4930/4930 co-relation queries the response was YES. [2023-08-24 05:13:13,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:13:13,660 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:13:13,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:13:13,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:13:13,660 INFO L85 PathProgramCache]: Analyzing trace with hash -797141172, now seen corresponding path program 1 times [2023-08-24 05:13:13,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:13:13,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824026926] [2023-08-24 05:13:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:13:13,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:13:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:13:13,790 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:13:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:13:13,839 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:13:13,839 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:13:13,839 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:13:13,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-24 05:13:13,840 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:13:13,840 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:13:13,840 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:13:13,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-08-24 05:13:14,039 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:13:14,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1795 places, 1981 transitions, 5047 flow [2023-08-24 05:13:15,887 INFO L124 PetriNetUnfolderBase]: 280/2351 cut-off events. [2023-08-24 05:13:15,887 INFO L125 PetriNetUnfolderBase]: For 5425/5425 co-relation queries the response was YES. [2023-08-24 05:13:16,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2941 conditions, 2351 events. 280/2351 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 11119 event pairs, 0 based on Foata normal form. 0/2008 useless extension candidates. Maximal degree in co-relation 2819. Up to 64 conditions per place. [2023-08-24 05:13:16,068 INFO L82 GeneralOperation]: Start removeDead. Operand has 1795 places, 1981 transitions, 5047 flow [2023-08-24 05:13:16,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1795 places, 1981 transitions, 5047 flow [2023-08-24 05:13:16,137 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:13:16,137 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1795 places, 1981 transitions, 5047 flow [2023-08-24 05:13:16,137 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1795 places, 1981 transitions, 5047 flow [2023-08-24 05:13:16,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1795 places, 1981 transitions, 5047 flow [2023-08-24 05:13:18,609 INFO L124 PetriNetUnfolderBase]: 280/2351 cut-off events. [2023-08-24 05:13:18,609 INFO L125 PetriNetUnfolderBase]: For 5425/5425 co-relation queries the response was YES. [2023-08-24 05:13:18,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2941 conditions, 2351 events. 280/2351 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 11119 event pairs, 0 based on Foata normal form. 0/2008 useless extension candidates. Maximal degree in co-relation 2819. Up to 64 conditions per place. [2023-08-24 05:13:19,686 INFO L119 LiptonReduction]: Number of co-enabled transitions 3682552 [2023-08-24 05:13:38,376 INFO L134 LiptonReduction]: Checked pairs total: 7882226 [2023-08-24 05:13:38,377 INFO L136 LiptonReduction]: Total number of compositions: 1563 [2023-08-24 05:13:38,378 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:13:38,378 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:13:38,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:13:38,614 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:13:38,614 INFO L124 PetriNetUnfolderBase]: 134/894 cut-off events. [2023-08-24 05:13:38,614 INFO L125 PetriNetUnfolderBase]: For 5425/5425 co-relation queries the response was YES. [2023-08-24 05:13:38,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:13:38,614 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:13:38,614 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:13:38,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:13:38,615 INFO L85 PathProgramCache]: Analyzing trace with hash 291964691, now seen corresponding path program 1 times [2023-08-24 05:13:38,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:13:38,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803754263] [2023-08-24 05:13:38,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:13:38,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:13:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:13:38,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:13:38,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:13:38,729 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:13:38,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:13:38,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:13:38,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-24 05:13:38,730 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:13:38,731 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:13:38,731 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:13:38,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-08-24 05:13:38,996 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:13:39,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1852 places, 2044 transitions, 5240 flow [2023-08-24 05:13:40,909 INFO L124 PetriNetUnfolderBase]: 289/2426 cut-off events. [2023-08-24 05:13:40,910 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2023-08-24 05:13:41,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3051 conditions, 2426 events. 289/2426 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 11516 event pairs, 0 based on Foata normal form. 0/2072 useless extension candidates. Maximal degree in co-relation 2928. Up to 66 conditions per place. [2023-08-24 05:13:41,123 INFO L82 GeneralOperation]: Start removeDead. Operand has 1852 places, 2044 transitions, 5240 flow [2023-08-24 05:13:41,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1852 places, 2044 transitions, 5240 flow [2023-08-24 05:13:41,202 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:13:41,202 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1852 places, 2044 transitions, 5240 flow [2023-08-24 05:13:41,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1852 places, 2044 transitions, 5240 flow [2023-08-24 05:13:41,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1852 places, 2044 transitions, 5240 flow [2023-08-24 05:13:43,099 INFO L124 PetriNetUnfolderBase]: 289/2426 cut-off events. [2023-08-24 05:13:43,099 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2023-08-24 05:13:43,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3051 conditions, 2426 events. 289/2426 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 11516 event pairs, 0 based on Foata normal form. 0/2072 useless extension candidates. Maximal degree in co-relation 2928. Up to 66 conditions per place. [2023-08-24 05:13:44,079 INFO L119 LiptonReduction]: Number of co-enabled transitions 3926336 [2023-08-24 05:14:03,656 INFO L134 LiptonReduction]: Checked pairs total: 8328060 [2023-08-24 05:14:03,656 INFO L136 LiptonReduction]: Total number of compositions: 1616 [2023-08-24 05:14:03,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:14:03,658 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:14:03,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:14:03,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:14:03,918 INFO L124 PetriNetUnfolderBase]: 140/926 cut-off events. [2023-08-24 05:14:03,918 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2023-08-24 05:14:03,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:14:03,918 INFO L208 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:14:03,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:14:03,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:14:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash 639229301, now seen corresponding path program 1 times [2023-08-24 05:14:03,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:14:03,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122075401] [2023-08-24 05:14:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:14:03,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:14:04,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:14:04,033 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:14:04,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:14:04,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:14:04,091 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:14:04,091 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:14:04,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-24 05:14:04,092 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:14:04,092 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:14:04,092 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:14:04,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-08-24 05:14:04,299 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:14:04,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1909 places, 2107 transitions, 5435 flow [2023-08-24 05:14:06,349 INFO L124 PetriNetUnfolderBase]: 298/2501 cut-off events. [2023-08-24 05:14:06,349 INFO L125 PetriNetUnfolderBase]: For 6512/6512 co-relation queries the response was YES. [2023-08-24 05:14:06,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3162 conditions, 2501 events. 298/2501 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 11896 event pairs, 0 based on Foata normal form. 0/2136 useless extension candidates. Maximal degree in co-relation 3038. Up to 68 conditions per place. [2023-08-24 05:14:06,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 1909 places, 2107 transitions, 5435 flow [2023-08-24 05:14:06,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1909 places, 2107 transitions, 5435 flow [2023-08-24 05:14:06,774 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:14:06,774 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1909 places, 2107 transitions, 5435 flow [2023-08-24 05:14:06,774 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1909 places, 2107 transitions, 5435 flow [2023-08-24 05:14:06,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1909 places, 2107 transitions, 5435 flow [2023-08-24 05:14:08,779 INFO L124 PetriNetUnfolderBase]: 298/2501 cut-off events. [2023-08-24 05:14:08,779 INFO L125 PetriNetUnfolderBase]: For 6512/6512 co-relation queries the response was YES. [2023-08-24 05:14:08,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3162 conditions, 2501 events. 298/2501 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 11896 event pairs, 0 based on Foata normal form. 0/2136 useless extension candidates. Maximal degree in co-relation 3038. Up to 68 conditions per place. [2023-08-24 05:14:09,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 4177932 [2023-08-24 05:14:28,986 INFO L134 LiptonReduction]: Checked pairs total: 8834959 [2023-08-24 05:14:28,986 INFO L136 LiptonReduction]: Total number of compositions: 1670 [2023-08-24 05:14:28,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:14:28,988 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:14:28,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:14:29,324 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:14:29,324 INFO L124 PetriNetUnfolderBase]: 144/953 cut-off events. [2023-08-24 05:14:29,324 INFO L125 PetriNetUnfolderBase]: For 6512/6512 co-relation queries the response was YES. [2023-08-24 05:14:29,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:14:29,325 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:14:29,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:14:29,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:14:29,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1609482391, now seen corresponding path program 1 times [2023-08-24 05:14:29,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:14:29,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082274809] [2023-08-24 05:14:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:14:29,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:14:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:14:29,385 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:14:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:14:29,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:14:29,452 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:14:29,452 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:14:29,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-24 05:14:29,452 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:14:29,452 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:14:29,452 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:14:29,452 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-08-24 05:14:29,683 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:14:29,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1966 places, 2170 transitions, 5632 flow [2023-08-24 05:14:31,931 INFO L124 PetriNetUnfolderBase]: 307/2576 cut-off events. [2023-08-24 05:14:31,931 INFO L125 PetriNetUnfolderBase]: For 7106/7106 co-relation queries the response was YES. [2023-08-24 05:14:32,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 2576 events. 307/2576 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 12301 event pairs, 0 based on Foata normal form. 0/2200 useless extension candidates. Maximal degree in co-relation 3149. Up to 70 conditions per place. [2023-08-24 05:14:32,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 1966 places, 2170 transitions, 5632 flow [2023-08-24 05:14:32,212 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1966 places, 2170 transitions, 5632 flow [2023-08-24 05:14:32,212 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:14:32,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1966 places, 2170 transitions, 5632 flow [2023-08-24 05:14:32,213 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1966 places, 2170 transitions, 5632 flow [2023-08-24 05:14:32,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1966 places, 2170 transitions, 5632 flow [2023-08-24 05:14:34,342 INFO L124 PetriNetUnfolderBase]: 307/2576 cut-off events. [2023-08-24 05:14:34,343 INFO L125 PetriNetUnfolderBase]: For 7106/7106 co-relation queries the response was YES. [2023-08-24 05:14:34,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3274 conditions, 2576 events. 307/2576 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 12301 event pairs, 0 based on Foata normal form. 0/2200 useless extension candidates. Maximal degree in co-relation 3149. Up to 70 conditions per place. [2023-08-24 05:14:35,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 4437340 [2023-08-24 05:14:56,611 INFO L134 LiptonReduction]: Checked pairs total: 9480268 [2023-08-24 05:14:56,611 INFO L136 LiptonReduction]: Total number of compositions: 1724 [2023-08-24 05:14:56,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:14:56,613 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:14:56,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:14:56,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:14:56,974 INFO L124 PetriNetUnfolderBase]: 146/976 cut-off events. [2023-08-24 05:14:56,974 INFO L125 PetriNetUnfolderBase]: For 7106/7106 co-relation queries the response was YES. [2023-08-24 05:14:56,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:14:56,974 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:14:56,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:14:56,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:14:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1413739277, now seen corresponding path program 1 times [2023-08-24 05:14:56,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:14:56,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778329215] [2023-08-24 05:14:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:14:56,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:14:57,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:14:57,058 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:14:57,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:14:57,131 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:14:57,131 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:14:57,131 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:14:57,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-24 05:14:57,132 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:14:57,132 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:14:57,132 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:14:57,132 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-08-24 05:14:57,362 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:14:57,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2023 places, 2233 transitions, 5831 flow [2023-08-24 05:14:59,740 INFO L124 PetriNetUnfolderBase]: 316/2651 cut-off events. [2023-08-24 05:14:59,740 INFO L125 PetriNetUnfolderBase]: For 7735/7735 co-relation queries the response was YES. [2023-08-24 05:15:00,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 2651 events. 316/2651 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 12670 event pairs, 0 based on Foata normal form. 0/2264 useless extension candidates. Maximal degree in co-relation 3261. Up to 72 conditions per place. [2023-08-24 05:15:00,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 2023 places, 2233 transitions, 5831 flow [2023-08-24 05:15:00,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2023 places, 2233 transitions, 5831 flow [2023-08-24 05:15:00,064 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:15:00,064 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2023 places, 2233 transitions, 5831 flow [2023-08-24 05:15:00,064 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2023 places, 2233 transitions, 5831 flow [2023-08-24 05:15:00,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2023 places, 2233 transitions, 5831 flow [2023-08-24 05:15:02,443 INFO L124 PetriNetUnfolderBase]: 316/2651 cut-off events. [2023-08-24 05:15:02,443 INFO L125 PetriNetUnfolderBase]: For 7735/7735 co-relation queries the response was YES. [2023-08-24 05:15:02,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3387 conditions, 2651 events. 316/2651 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 12670 event pairs, 0 based on Foata normal form. 0/2264 useless extension candidates. Maximal degree in co-relation 3261. Up to 72 conditions per place. [2023-08-24 05:15:03,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 4704560 [2023-08-24 05:15:26,778 INFO L134 LiptonReduction]: Checked pairs total: 10199493 [2023-08-24 05:15:26,778 INFO L136 LiptonReduction]: Total number of compositions: 1769 [2023-08-24 05:15:26,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:15:26,780 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:15:26,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:15:27,101 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:15:27,101 INFO L124 PetriNetUnfolderBase]: 151/1006 cut-off events. [2023-08-24 05:15:27,101 INFO L125 PetriNetUnfolderBase]: For 7735/7735 co-relation queries the response was YES. [2023-08-24 05:15:27,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:15:27,101 INFO L208 CegarLoopForPetriNet]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:15:27,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:15:27,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:15:27,101 INFO L85 PathProgramCache]: Analyzing trace with hash 836937154, now seen corresponding path program 1 times [2023-08-24 05:15:27,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:15:27,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140149285] [2023-08-24 05:15:27,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:15:27,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:15:27,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:15:27,175 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:15:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:15:27,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:15:27,246 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:15:27,246 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:15:27,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-24 05:15:27,246 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:15:27,247 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:15:27,247 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:15:27,247 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-08-24 05:15:27,442 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:15:27,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2080 places, 2296 transitions, 6032 flow [2023-08-24 05:15:29,831 INFO L124 PetriNetUnfolderBase]: 325/2726 cut-off events. [2023-08-24 05:15:29,832 INFO L125 PetriNetUnfolderBase]: For 8400/8400 co-relation queries the response was YES. [2023-08-24 05:15:30,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 2726 events. 325/2726 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 12996 event pairs, 0 based on Foata normal form. 0/2328 useless extension candidates. Maximal degree in co-relation 3374. Up to 74 conditions per place. [2023-08-24 05:15:30,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 2080 places, 2296 transitions, 6032 flow [2023-08-24 05:15:30,332 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2080 places, 2296 transitions, 6032 flow [2023-08-24 05:15:30,333 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:15:30,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2080 places, 2296 transitions, 6032 flow [2023-08-24 05:15:30,333 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2080 places, 2296 transitions, 6032 flow [2023-08-24 05:15:30,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2080 places, 2296 transitions, 6032 flow [2023-08-24 05:15:32,653 INFO L124 PetriNetUnfolderBase]: 325/2726 cut-off events. [2023-08-24 05:15:32,653 INFO L125 PetriNetUnfolderBase]: For 8400/8400 co-relation queries the response was YES. [2023-08-24 05:15:32,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 2726 events. 325/2726 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 12996 event pairs, 0 based on Foata normal form. 0/2328 useless extension candidates. Maximal degree in co-relation 3374. Up to 74 conditions per place. [2023-08-24 05:15:33,879 INFO L119 LiptonReduction]: Number of co-enabled transitions 4979592 [2023-08-24 05:15:56,695 INFO L134 LiptonReduction]: Checked pairs total: 10597483 [2023-08-24 05:15:56,695 INFO L136 LiptonReduction]: Total number of compositions: 1803 [2023-08-24 05:15:56,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:15:56,697 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:15:56,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:15:57,037 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:15:57,037 INFO L124 PetriNetUnfolderBase]: 154/1042 cut-off events. [2023-08-24 05:15:57,037 INFO L125 PetriNetUnfolderBase]: For 8400/8400 co-relation queries the response was YES. [2023-08-24 05:15:57,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:15:57,038 INFO L208 CegarLoopForPetriNet]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:15:57,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:15:57,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:15:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash -563754587, now seen corresponding path program 1 times [2023-08-24 05:15:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:15:57,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386218388] [2023-08-24 05:15:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:15:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:15:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:15:57,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:15:57,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:15:57,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:15:57,181 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:15:57,181 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:15:57,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-24 05:15:57,182 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:15:57,182 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:15:57,182 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:15:57,182 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-08-24 05:15:57,456 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:15:57,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2137 places, 2359 transitions, 6235 flow [2023-08-24 05:15:59,968 INFO L124 PetriNetUnfolderBase]: 334/2801 cut-off events. [2023-08-24 05:15:59,968 INFO L125 PetriNetUnfolderBase]: For 9102/9102 co-relation queries the response was YES. [2023-08-24 05:16:00,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3616 conditions, 2801 events. 334/2801 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 13406 event pairs, 0 based on Foata normal form. 0/2392 useless extension candidates. Maximal degree in co-relation 3488. Up to 76 conditions per place. [2023-08-24 05:16:00,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 2137 places, 2359 transitions, 6235 flow [2023-08-24 05:16:00,313 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2137 places, 2359 transitions, 6235 flow [2023-08-24 05:16:00,314 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:16:00,314 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2137 places, 2359 transitions, 6235 flow [2023-08-24 05:16:00,314 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2137 places, 2359 transitions, 6235 flow [2023-08-24 05:16:00,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2137 places, 2359 transitions, 6235 flow [2023-08-24 05:16:02,966 INFO L124 PetriNetUnfolderBase]: 334/2801 cut-off events. [2023-08-24 05:16:02,966 INFO L125 PetriNetUnfolderBase]: For 9102/9102 co-relation queries the response was YES. [2023-08-24 05:16:03,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3616 conditions, 2801 events. 334/2801 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 13406 event pairs, 0 based on Foata normal form. 0/2392 useless extension candidates. Maximal degree in co-relation 3488. Up to 76 conditions per place. [2023-08-24 05:16:04,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 5262436 [2023-08-24 05:16:29,384 INFO L134 LiptonReduction]: Checked pairs total: 11293475 [2023-08-24 05:16:29,384 INFO L136 LiptonReduction]: Total number of compositions: 1881 [2023-08-24 05:16:29,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:16:29,386 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:16:29,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:16:29,745 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:16:29,745 INFO L124 PetriNetUnfolderBase]: 163/1064 cut-off events. [2023-08-24 05:16:29,745 INFO L125 PetriNetUnfolderBase]: For 9102/9102 co-relation queries the response was YES. [2023-08-24 05:16:29,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:16:29,745 INFO L208 CegarLoopForPetriNet]: trace histogram [38, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:16:29,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:16:29,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:16:29,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2126582502, now seen corresponding path program 1 times [2023-08-24 05:16:29,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:16:29,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142780851] [2023-08-24 05:16:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:16:29,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:16:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:16:29,813 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:16:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:16:29,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:16:29,891 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:16:29,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:16:29,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-24 05:16:29,891 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:16:29,892 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:16:29,892 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:16:29,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-08-24 05:16:30,101 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:16:30,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2194 places, 2422 transitions, 6440 flow [2023-08-24 05:16:33,034 INFO L124 PetriNetUnfolderBase]: 343/2876 cut-off events. [2023-08-24 05:16:33,034 INFO L125 PetriNetUnfolderBase]: For 9842/9842 co-relation queries the response was YES. [2023-08-24 05:16:33,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3732 conditions, 2876 events. 343/2876 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 13743 event pairs, 0 based on Foata normal form. 0/2456 useless extension candidates. Maximal degree in co-relation 3603. Up to 78 conditions per place. [2023-08-24 05:16:33,321 INFO L82 GeneralOperation]: Start removeDead. Operand has 2194 places, 2422 transitions, 6440 flow [2023-08-24 05:16:33,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2194 places, 2422 transitions, 6440 flow [2023-08-24 05:16:33,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:16:33,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2194 places, 2422 transitions, 6440 flow [2023-08-24 05:16:33,385 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2194 places, 2422 transitions, 6440 flow [2023-08-24 05:16:33,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2194 places, 2422 transitions, 6440 flow [2023-08-24 05:16:36,050 INFO L124 PetriNetUnfolderBase]: 343/2876 cut-off events. [2023-08-24 05:16:36,050 INFO L125 PetriNetUnfolderBase]: For 9842/9842 co-relation queries the response was YES. [2023-08-24 05:16:36,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3732 conditions, 2876 events. 343/2876 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 13743 event pairs, 0 based on Foata normal form. 0/2456 useless extension candidates. Maximal degree in co-relation 3603. Up to 78 conditions per place. [2023-08-24 05:16:37,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 5553092 [2023-08-24 05:17:02,445 INFO L134 LiptonReduction]: Checked pairs total: 12006321 [2023-08-24 05:17:02,445 INFO L136 LiptonReduction]: Total number of compositions: 1909 [2023-08-24 05:17:02,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:17:02,447 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:17:02,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:17:02,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:17:02,932 INFO L124 PetriNetUnfolderBase]: 165/1108 cut-off events. [2023-08-24 05:17:02,932 INFO L125 PetriNetUnfolderBase]: For 9842/9842 co-relation queries the response was YES. [2023-08-24 05:17:02,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:17:02,932 INFO L208 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:17:02,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:17:02,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:17:02,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1334897437, now seen corresponding path program 1 times [2023-08-24 05:17:02,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:17:02,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473394912] [2023-08-24 05:17:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:17:02,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:17:03,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:17:03,005 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:17:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:17:03,083 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:17:03,083 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:17:03,083 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:17:03,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-24 05:17:03,084 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:17:03,084 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:17:03,084 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:17:03,084 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-08-24 05:17:03,298 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:17:03,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2251 places, 2485 transitions, 6647 flow [2023-08-24 05:17:06,189 INFO L124 PetriNetUnfolderBase]: 352/2951 cut-off events. [2023-08-24 05:17:06,189 INFO L125 PetriNetUnfolderBase]: For 10621/10621 co-relation queries the response was YES. [2023-08-24 05:17:06,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3849 conditions, 2951 events. 352/2951 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 14144 event pairs, 0 based on Foata normal form. 0/2520 useless extension candidates. Maximal degree in co-relation 3719. Up to 80 conditions per place. [2023-08-24 05:17:06,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 2251 places, 2485 transitions, 6647 flow [2023-08-24 05:17:06,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2251 places, 2485 transitions, 6647 flow [2023-08-24 05:17:06,602 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:17:06,602 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2251 places, 2485 transitions, 6647 flow [2023-08-24 05:17:06,602 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2251 places, 2485 transitions, 6647 flow [2023-08-24 05:17:06,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2251 places, 2485 transitions, 6647 flow [2023-08-24 05:17:10,754 INFO L124 PetriNetUnfolderBase]: 352/2951 cut-off events. [2023-08-24 05:17:10,754 INFO L125 PetriNetUnfolderBase]: For 10621/10621 co-relation queries the response was YES. [2023-08-24 05:17:11,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3849 conditions, 2951 events. 352/2951 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 14144 event pairs, 0 based on Foata normal form. 0/2520 useless extension candidates. Maximal degree in co-relation 3719. Up to 80 conditions per place. [2023-08-24 05:17:12,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 5851560 [2023-08-24 05:17:38,810 INFO L134 LiptonReduction]: Checked pairs total: 12510362 [2023-08-24 05:17:38,810 INFO L136 LiptonReduction]: Total number of compositions: 1947 [2023-08-24 05:17:38,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:17:38,812 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:17:38,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:17:39,225 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:17:39,225 INFO L124 PetriNetUnfolderBase]: 168/1130 cut-off events. [2023-08-24 05:17:39,225 INFO L125 PetriNetUnfolderBase]: For 10621/10621 co-relation queries the response was YES. [2023-08-24 05:17:39,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:17:39,226 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:17:39,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:17:39,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:17:39,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1078599162, now seen corresponding path program 1 times [2023-08-24 05:17:39,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:17:39,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247088948] [2023-08-24 05:17:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:17:39,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:17:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:17:39,373 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:17:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:17:39,451 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:17:39,451 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:17:39,451 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:17:39,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-24 05:17:39,451 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:17:39,452 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:17:39,452 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:17:39,452 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-08-24 05:17:39,668 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:17:39,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2308 places, 2548 transitions, 6856 flow [2023-08-24 05:17:42,699 INFO L124 PetriNetUnfolderBase]: 361/3026 cut-off events. [2023-08-24 05:17:42,699 INFO L125 PetriNetUnfolderBase]: For 11440/11440 co-relation queries the response was YES. [2023-08-24 05:17:43,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3967 conditions, 3026 events. 361/3026 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 14471 event pairs, 0 based on Foata normal form. 0/2584 useless extension candidates. Maximal degree in co-relation 3836. Up to 82 conditions per place. [2023-08-24 05:17:43,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 2308 places, 2548 transitions, 6856 flow [2023-08-24 05:17:43,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2308 places, 2548 transitions, 6856 flow [2023-08-24 05:17:43,111 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:17:43,111 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2308 places, 2548 transitions, 6856 flow [2023-08-24 05:17:43,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2308 places, 2548 transitions, 6856 flow [2023-08-24 05:17:43,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2308 places, 2548 transitions, 6856 flow [2023-08-24 05:17:46,172 INFO L124 PetriNetUnfolderBase]: 361/3026 cut-off events. [2023-08-24 05:17:46,172 INFO L125 PetriNetUnfolderBase]: For 11440/11440 co-relation queries the response was YES. [2023-08-24 05:17:46,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3967 conditions, 3026 events. 361/3026 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 14471 event pairs, 0 based on Foata normal form. 0/2584 useless extension candidates. Maximal degree in co-relation 3836. Up to 82 conditions per place. [2023-08-24 05:17:47,711 INFO L119 LiptonReduction]: Number of co-enabled transitions 6157840 [2023-08-24 05:18:14,148 INFO L134 LiptonReduction]: Checked pairs total: 13048176 [2023-08-24 05:18:14,148 INFO L136 LiptonReduction]: Total number of compositions: 2051 [2023-08-24 05:18:14,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:18:14,150 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:18:14,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:18:14,577 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:18:14,577 INFO L124 PetriNetUnfolderBase]: 179/1153 cut-off events. [2023-08-24 05:18:14,577 INFO L125 PetriNetUnfolderBase]: For 11440/11440 co-relation queries the response was YES. [2023-08-24 05:18:14,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:18:14,577 INFO L208 CegarLoopForPetriNet]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:18:14,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:18:14,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:18:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1090438301, now seen corresponding path program 1 times [2023-08-24 05:18:14,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:18:14,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967866600] [2023-08-24 05:18:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:18:14,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:18:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:18:14,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:18:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:18:14,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:18:14,757 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:18:14,757 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:18:14,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-24 05:18:14,758 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:18:14,758 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:18:14,758 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:18:14,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-08-24 05:18:15,088 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:18:15,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2365 places, 2611 transitions, 7067 flow [2023-08-24 05:18:18,182 INFO L124 PetriNetUnfolderBase]: 370/3101 cut-off events. [2023-08-24 05:18:18,182 INFO L125 PetriNetUnfolderBase]: For 12300/12300 co-relation queries the response was YES. [2023-08-24 05:18:18,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 3101 events. 370/3101 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 14872 event pairs, 0 based on Foata normal form. 0/2648 useless extension candidates. Maximal degree in co-relation 3954. Up to 84 conditions per place. [2023-08-24 05:18:18,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 2365 places, 2611 transitions, 7067 flow [2023-08-24 05:18:18,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2365 places, 2611 transitions, 7067 flow [2023-08-24 05:18:18,611 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:18:18,611 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2365 places, 2611 transitions, 7067 flow [2023-08-24 05:18:18,611 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2365 places, 2611 transitions, 7067 flow [2023-08-24 05:18:18,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2365 places, 2611 transitions, 7067 flow [2023-08-24 05:18:21,913 INFO L124 PetriNetUnfolderBase]: 370/3101 cut-off events. [2023-08-24 05:18:21,913 INFO L125 PetriNetUnfolderBase]: For 12300/12300 co-relation queries the response was YES. [2023-08-24 05:18:22,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4086 conditions, 3101 events. 370/3101 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 14872 event pairs, 0 based on Foata normal form. 0/2648 useless extension candidates. Maximal degree in co-relation 3954. Up to 84 conditions per place. [2023-08-24 05:18:23,524 INFO L119 LiptonReduction]: Number of co-enabled transitions 6471932 [2023-08-24 05:18:52,639 INFO L134 LiptonReduction]: Checked pairs total: 13928867 [2023-08-24 05:18:52,639 INFO L136 LiptonReduction]: Total number of compositions: 2060 [2023-08-24 05:18:52,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:18:52,641 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:18:52,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:18:53,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:18:53,109 INFO L124 PetriNetUnfolderBase]: 182/1198 cut-off events. [2023-08-24 05:18:53,109 INFO L125 PetriNetUnfolderBase]: For 12300/12300 co-relation queries the response was YES. [2023-08-24 05:18:53,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:18:53,109 INFO L208 CegarLoopForPetriNet]: trace histogram [42, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:18:53,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:18:53,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:18:53,109 INFO L85 PathProgramCache]: Analyzing trace with hash -275774233, now seen corresponding path program 1 times [2023-08-24 05:18:53,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:18:53,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799648874] [2023-08-24 05:18:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:18:53,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:18:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:18:53,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:18:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:18:53,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:18:53,399 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:18:53,399 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:18:53,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-24 05:18:53,399 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:18:53,399 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:18:53,399 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:18:53,399 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-08-24 05:18:53,629 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:18:53,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2422 places, 2674 transitions, 7280 flow [2023-08-24 05:18:56,873 INFO L124 PetriNetUnfolderBase]: 379/3176 cut-off events. [2023-08-24 05:18:56,873 INFO L125 PetriNetUnfolderBase]: For 13202/13202 co-relation queries the response was YES. [2023-08-24 05:18:57,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 3176 events. 379/3176 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 15265 event pairs, 0 based on Foata normal form. 0/2712 useless extension candidates. Maximal degree in co-relation 4073. Up to 86 conditions per place. [2023-08-24 05:18:57,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 2422 places, 2674 transitions, 7280 flow [2023-08-24 05:18:57,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2422 places, 2674 transitions, 7280 flow [2023-08-24 05:18:57,341 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:18:57,341 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2422 places, 2674 transitions, 7280 flow [2023-08-24 05:18:57,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2422 places, 2674 transitions, 7280 flow [2023-08-24 05:18:57,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2422 places, 2674 transitions, 7280 flow [2023-08-24 05:19:00,727 INFO L124 PetriNetUnfolderBase]: 379/3176 cut-off events. [2023-08-24 05:19:00,727 INFO L125 PetriNetUnfolderBase]: For 13202/13202 co-relation queries the response was YES. [2023-08-24 05:19:01,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 3176 events. 379/3176 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 15265 event pairs, 0 based on Foata normal form. 0/2712 useless extension candidates. Maximal degree in co-relation 4073. Up to 86 conditions per place. [2023-08-24 05:19:02,410 INFO L119 LiptonReduction]: Number of co-enabled transitions 6793836 [2023-08-24 05:19:32,522 INFO L134 LiptonReduction]: Checked pairs total: 14291282 [2023-08-24 05:19:32,523 INFO L136 LiptonReduction]: Total number of compositions: 2108 [2023-08-24 05:19:32,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 05:19:32,524 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;@108f2f00, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 05:19:32,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 05:19:33,015 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 05:19:33,015 INFO L124 PetriNetUnfolderBase]: 179/1207 cut-off events. [2023-08-24 05:19:33,015 INFO L125 PetriNetUnfolderBase]: For 13202/13202 co-relation queries the response was YES. [2023-08-24 05:19:33,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 05:19:33,015 INFO L208 CegarLoopForPetriNet]: trace histogram [43, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 05:19:33,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 05:19:33,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 05:19:33,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1189822175, now seen corresponding path program 1 times [2023-08-24 05:19:33,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 05:19:33,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475789317] [2023-08-24 05:19:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 05:19:33,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 05:19:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:19:33,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 05:19:33,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 05:19:33,212 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 05:19:33,212 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 05:19:33,212 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 05:19:33,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-24 05:19:33,213 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 05:19:33,213 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 05:19:33,213 WARN L233 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 05:19:33,213 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2023-08-24 05:19:33,462 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-24 05:19:33,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2479 places, 2737 transitions, 7495 flow [2023-08-24 05:19:37,182 INFO L124 PetriNetUnfolderBase]: 388/3251 cut-off events. [2023-08-24 05:19:37,182 INFO L125 PetriNetUnfolderBase]: For 14147/14147 co-relation queries the response was YES. [2023-08-24 05:19:37,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4327 conditions, 3251 events. 388/3251 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 15653 event pairs, 0 based on Foata normal form. 0/2776 useless extension candidates. Maximal degree in co-relation 4193. Up to 88 conditions per place. [2023-08-24 05:19:37,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 2479 places, 2737 transitions, 7495 flow [2023-08-24 05:19:37,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2479 places, 2737 transitions, 7495 flow [2023-08-24 05:19:37,669 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 05:19:37,670 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2479 places, 2737 transitions, 7495 flow [2023-08-24 05:19:37,670 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2479 places, 2737 transitions, 7495 flow [2023-08-24 05:19:37,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2479 places, 2737 transitions, 7495 flow [2023-08-24 05:19:41,452 INFO L124 PetriNetUnfolderBase]: 388/3251 cut-off events. [2023-08-24 05:19:41,452 INFO L125 PetriNetUnfolderBase]: For 14147/14147 co-relation queries the response was YES. [2023-08-24 05:19:41,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4327 conditions, 3251 events. 388/3251 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 15653 event pairs, 0 based on Foata normal form. 0/2776 useless extension candidates. Maximal degree in co-relation 4193. Up to 88 conditions per place. [2023-08-24 05:19:43,240 INFO L119 LiptonReduction]: Number of co-enabled transitions 7123552