/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:10:20,708 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:10:20,790 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 05:10:20,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:10:20,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:10:20,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:10:20,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:10:20,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:10:20,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:10:20,831 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:10:20,831 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:10:20,831 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:10:20,832 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:10:20,833 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:10:20,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:10:20,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:10:20,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:10:20,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:10:20,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:10:20,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:10:20,835 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:10:20,835 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:10:20,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:10:20,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:10:20,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:10:20,837 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:10:20,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:10:20,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:10:20,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:10:20,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:10:20,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:10:20,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:10:20,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:10:20,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:10:20,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:10:20,840 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:10:21,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:10:21,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:10:21,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:10:21,158 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:10:21,159 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:10:21,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-08-27 05:10:22,359 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:10:22,644 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:10:22,644 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-08-27 05:10:22,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a31218183/817724a8f5834eb380d27a30799469ec/FLAG06b85fb64 [2023-08-27 05:10:22,675 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a31218183/817724a8f5834eb380d27a30799469ec [2023-08-27 05:10:22,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:10:22,681 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:10:22,683 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:10:22,683 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:10:22,686 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:10:22,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:10:22" (1/1) ... [2023-08-27 05:10:22,688 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2262c223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:22, skipping insertion in model container [2023-08-27 05:10:22,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:10:22" (1/1) ... [2023-08-27 05:10:22,737 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:10:23,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:10:23,055 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:10:23,086 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:10:23,088 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:10:23,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:10:23,143 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:10:23,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23 WrapperNode [2023-08-27 05:10:23,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:10:23,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:10:23,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:10:23,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:10:23,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,206 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-08-27 05:10:23,207 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:10:23,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:10:23,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:10:23,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:10:23,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,229 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,243 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,244 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:10:23,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:10:23,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:10:23,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:10:23,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (1/1) ... [2023-08-27 05:10:23,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:10:23,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:10:23,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 05:10:23,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 05:10:23,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:10:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:10:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:10:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:10:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:10:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 05:10:23,320 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 05:10:23,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:10:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:10:23,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:10:23,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:10:23,322 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 05:10:23,475 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:10:23,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:10:23,650 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:10:23,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:10:23,657 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-27 05:10:23,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:10:23 BoogieIcfgContainer [2023-08-27 05:10:23,659 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:10:23,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:10:23,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:10:23,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:10:23,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:10:22" (1/3) ... [2023-08-27 05:10:23,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272120f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:10:23, skipping insertion in model container [2023-08-27 05:10:23,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:10:23" (2/3) ... [2023-08-27 05:10:23,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@272120f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:10:23, skipping insertion in model container [2023-08-27 05:10:23,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:10:23" (3/3) ... [2023-08-27 05:10:23,666 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2023-08-27 05:10:23,682 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:10:23,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 05:10:23,682 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:10:23,763 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 05:10:23,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 136 transitions, 280 flow [2023-08-27 05:10:23,906 INFO L124 PetriNetUnfolderBase]: 20/175 cut-off events. [2023-08-27 05:10:23,907 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 05:10:23,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 175 events. 20/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 398 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-27 05:10:23,913 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 136 transitions, 280 flow [2023-08-27 05:10:23,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 127 transitions, 259 flow [2023-08-27 05:10:23,925 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:10:23,934 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 127 transitions, 259 flow [2023-08-27 05:10:23,936 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 127 transitions, 259 flow [2023-08-27 05:10:23,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 127 transitions, 259 flow [2023-08-27 05:10:23,969 INFO L124 PetriNetUnfolderBase]: 19/166 cut-off events. [2023-08-27 05:10:23,969 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:10:23,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 166 events. 19/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 381 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-27 05:10:23,974 INFO L119 LiptonReduction]: Number of co-enabled transitions 3528 [2023-08-27 05:10:28,197 INFO L134 LiptonReduction]: Checked pairs total: 5719 [2023-08-27 05:10:28,197 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-27 05:10:28,209 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:10:28,215 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:10:28,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:10:28,220 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:10:28,220 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2023-08-27 05:10:28,220 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:10:28,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:10:28,221 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 05:10:28,221 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:10:28,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:10:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1750222386, now seen corresponding path program 1 times [2023-08-27 05:10:28,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:10:28,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201612763] [2023-08-27 05:10:28,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:10:28,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:10:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:28,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:10:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:28,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:10:28,383 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:10:28,384 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:10:28,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:10:28,386 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:10:28,388 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:10:28,389 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:10:28,389 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 05:10:28,409 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 05:10:28,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 174 transitions, 366 flow [2023-08-27 05:10:28,458 INFO L124 PetriNetUnfolderBase]: 35/289 cut-off events. [2023-08-27 05:10:28,458 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:10:28,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 289 events. 35/289 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 853 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2023-08-27 05:10:28,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 174 transitions, 366 flow [2023-08-27 05:10:28,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 174 transitions, 366 flow [2023-08-27 05:10:28,464 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:10:28,464 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 174 transitions, 366 flow [2023-08-27 05:10:28,464 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 174 transitions, 366 flow [2023-08-27 05:10:28,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 174 transitions, 366 flow [2023-08-27 05:10:28,493 INFO L124 PetriNetUnfolderBase]: 35/289 cut-off events. [2023-08-27 05:10:28,493 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:10:28,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 289 events. 35/289 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 853 event pairs, 0 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 177. Up to 8 conditions per place. [2023-08-27 05:10:28,502 INFO L119 LiptonReduction]: Number of co-enabled transitions 11016 [2023-08-27 05:10:32,258 INFO L134 LiptonReduction]: Checked pairs total: 29448 [2023-08-27 05:10:32,258 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-08-27 05:10:32,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:10:32,263 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:10:32,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:10:32,268 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:10:32,269 INFO L124 PetriNetUnfolderBase]: 16/73 cut-off events. [2023-08-27 05:10:32,269 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 05:10:32,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:10:32,269 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:10:32,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:10:32,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:10:32,270 INFO L85 PathProgramCache]: Analyzing trace with hash 78004277, now seen corresponding path program 1 times [2023-08-27 05:10:32,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:10:32,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464563870] [2023-08-27 05:10:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:10:32,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:10:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:32,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:10:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:32,327 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:10:32,328 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:10:32,328 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:10:32,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:10:32,328 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:10:32,329 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:10:32,329 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:10:32,329 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:10:32,348 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 05:10:32,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 212 transitions, 454 flow [2023-08-27 05:10:32,395 INFO L124 PetriNetUnfolderBase]: 55/444 cut-off events. [2023-08-27 05:10:32,395 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:10:32,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 444 events. 55/444 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1477 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 297. Up to 16 conditions per place. [2023-08-27 05:10:32,398 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 212 transitions, 454 flow [2023-08-27 05:10:32,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 212 transitions, 454 flow [2023-08-27 05:10:32,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:10:32,402 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 212 transitions, 454 flow [2023-08-27 05:10:32,402 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 212 transitions, 454 flow [2023-08-27 05:10:32,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 212 transitions, 454 flow [2023-08-27 05:10:32,445 INFO L124 PetriNetUnfolderBase]: 55/444 cut-off events. [2023-08-27 05:10:32,446 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:10:32,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 444 events. 55/444 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1477 event pairs, 1 based on Foata normal form. 0/349 useless extension candidates. Maximal degree in co-relation 297. Up to 16 conditions per place. [2023-08-27 05:10:32,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 20736 [2023-08-27 05:10:36,398 INFO L134 LiptonReduction]: Checked pairs total: 52088 [2023-08-27 05:10:36,398 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-08-27 05:10:36,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:10:36,401 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:10:36,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:10:36,409 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:10:36,410 INFO L124 PetriNetUnfolderBase]: 21/109 cut-off events. [2023-08-27 05:10:36,410 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 05:10:36,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:10:36,410 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:10:36,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:10:36,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:10:36,411 INFO L85 PathProgramCache]: Analyzing trace with hash 294586245, now seen corresponding path program 1 times [2023-08-27 05:10:36,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:10:36,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588416367] [2023-08-27 05:10:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:10:36,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:10:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:36,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:10:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:36,469 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:10:36,469 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:10:36,469 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:10:36,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:10:36,469 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:10:36,470 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:10:36,470 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:10:36,470 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:10:36,489 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 05:10:36,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 250 transitions, 544 flow [2023-08-27 05:10:36,573 INFO L124 PetriNetUnfolderBase]: 87/683 cut-off events. [2023-08-27 05:10:36,574 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:10:36,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 683 events. 87/683 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2655 event pairs, 6 based on Foata normal form. 0/537 useless extension candidates. Maximal degree in co-relation 464. Up to 32 conditions per place. [2023-08-27 05:10:36,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 250 transitions, 544 flow [2023-08-27 05:10:36,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 250 transitions, 544 flow [2023-08-27 05:10:36,585 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:10:36,586 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 250 transitions, 544 flow [2023-08-27 05:10:36,586 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 250 transitions, 544 flow [2023-08-27 05:10:36,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 250 transitions, 544 flow [2023-08-27 05:10:36,668 INFO L124 PetriNetUnfolderBase]: 87/683 cut-off events. [2023-08-27 05:10:36,668 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:10:36,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 683 events. 87/683 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2655 event pairs, 6 based on Foata normal form. 0/537 useless extension candidates. Maximal degree in co-relation 464. Up to 32 conditions per place. [2023-08-27 05:10:36,699 INFO L119 LiptonReduction]: Number of co-enabled transitions 33264 [2023-08-27 05:10:40,931 INFO L134 LiptonReduction]: Checked pairs total: 102191 [2023-08-27 05:10:40,931 INFO L136 LiptonReduction]: Total number of compositions: 194 [2023-08-27 05:10:40,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:10:40,934 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:10:40,934 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:10:40,947 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:10:40,947 INFO L124 PetriNetUnfolderBase]: 39/178 cut-off events. [2023-08-27 05:10:40,948 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-27 05:10:40,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:10:40,948 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 05:10:40,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:10:40,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:10:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1554241023, now seen corresponding path program 1 times [2023-08-27 05:10:40,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:10:40,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952326310] [2023-08-27 05:10:40,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:10:40,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:10:40,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:40,978 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:10:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:41,003 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:10:41,004 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:10:41,004 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:10:41,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:10:41,004 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:10:41,005 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:10:41,005 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:10:41,005 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 05:10:41,045 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-27 05:10:41,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 288 transitions, 636 flow [2023-08-27 05:10:41,194 INFO L124 PetriNetUnfolderBase]: 147/1094 cut-off events. [2023-08-27 05:10:41,194 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:10:41,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 1094 events. 147/1094 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5147 event pairs, 23 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 728. Up to 80 conditions per place. [2023-08-27 05:10:41,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 288 transitions, 636 flow [2023-08-27 05:10:41,218 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 288 transitions, 636 flow [2023-08-27 05:10:41,218 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:10:41,218 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 288 transitions, 636 flow [2023-08-27 05:10:41,219 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 288 transitions, 636 flow [2023-08-27 05:10:41,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 288 transitions, 636 flow [2023-08-27 05:10:41,373 INFO L124 PetriNetUnfolderBase]: 147/1094 cut-off events. [2023-08-27 05:10:41,374 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:10:41,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1205 conditions, 1094 events. 147/1094 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5147 event pairs, 23 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 728. Up to 80 conditions per place. [2023-08-27 05:10:41,428 INFO L119 LiptonReduction]: Number of co-enabled transitions 48600 [2023-08-27 05:10:45,483 INFO L134 LiptonReduction]: Checked pairs total: 153648 [2023-08-27 05:10:45,484 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-08-27 05:10:45,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:10:45,486 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:10:45,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:10:45,503 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:10:45,503 INFO L124 PetriNetUnfolderBase]: 43/217 cut-off events. [2023-08-27 05:10:45,503 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 05:10:45,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:10:45,503 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:10:45,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:10:45,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:10:45,504 INFO L85 PathProgramCache]: Analyzing trace with hash 406027720, now seen corresponding path program 1 times [2023-08-27 05:10:45,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:10:45,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941619812] [2023-08-27 05:10:45,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:10:45,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:10:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:45,529 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:10:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:45,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:10:45,552 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:10:45,552 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:10:45,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:10:45,553 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:10:45,553 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:10:45,553 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:10:45,553 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 05:10:45,577 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-27 05:10:45,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 326 transitions, 730 flow [2023-08-27 05:10:45,908 INFO L124 PetriNetUnfolderBase]: 271/1857 cut-off events. [2023-08-27 05:10:45,908 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:10:45,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 1857 events. 271/1857 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10693 event pairs, 72 based on Foata normal form. 0/1481 useless extension candidates. Maximal degree in co-relation 1193. Up to 192 conditions per place. [2023-08-27 05:10:45,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 326 transitions, 730 flow [2023-08-27 05:10:45,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 326 transitions, 730 flow [2023-08-27 05:10:45,946 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:10:45,946 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 326 transitions, 730 flow [2023-08-27 05:10:45,947 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 326 transitions, 730 flow [2023-08-27 05:10:45,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 326 transitions, 730 flow [2023-08-27 05:10:46,236 INFO L124 PetriNetUnfolderBase]: 271/1857 cut-off events. [2023-08-27 05:10:46,236 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:10:46,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 1857 events. 271/1857 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 10693 event pairs, 72 based on Foata normal form. 0/1481 useless extension candidates. Maximal degree in co-relation 1193. Up to 192 conditions per place. [2023-08-27 05:10:46,353 INFO L119 LiptonReduction]: Number of co-enabled transitions 66744 [2023-08-27 05:10:50,873 INFO L134 LiptonReduction]: Checked pairs total: 215487 [2023-08-27 05:10:50,873 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-08-27 05:10:50,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:10:50,875 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:10:50,875 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:10:50,902 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:10:50,902 INFO L124 PetriNetUnfolderBase]: 58/292 cut-off events. [2023-08-27 05:10:50,902 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-27 05:10:50,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:10:50,902 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:10:50,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:10:50,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:10:50,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1712384196, now seen corresponding path program 1 times [2023-08-27 05:10:50,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:10:50,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942994101] [2023-08-27 05:10:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:10:50,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:10:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:50,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:10:50,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:50,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:10:50,954 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:10:50,954 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:10:50,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 05:10:50,954 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:10:50,955 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:10:50,955 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:10:50,955 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-27 05:10:50,979 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-27 05:10:50,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 364 transitions, 826 flow [2023-08-27 05:10:51,604 INFO L124 PetriNetUnfolderBase]: 539/3340 cut-off events. [2023-08-27 05:10:51,604 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:10:51,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 3340 events. 539/3340 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 23707 event pairs, 201 based on Foata normal form. 0/2689 useless extension candidates. Maximal degree in co-relation 2075. Up to 448 conditions per place. [2023-08-27 05:10:51,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 323 places, 364 transitions, 826 flow [2023-08-27 05:10:51,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 323 places, 364 transitions, 826 flow [2023-08-27 05:10:51,692 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:10:51,692 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 323 places, 364 transitions, 826 flow [2023-08-27 05:10:51,693 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 323 places, 364 transitions, 826 flow [2023-08-27 05:10:51,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 364 transitions, 826 flow [2023-08-27 05:10:52,350 INFO L124 PetriNetUnfolderBase]: 539/3340 cut-off events. [2023-08-27 05:10:52,350 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:10:52,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 3340 events. 539/3340 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 23707 event pairs, 201 based on Foata normal form. 0/2689 useless extension candidates. Maximal degree in co-relation 2075. Up to 448 conditions per place. [2023-08-27 05:10:52,505 INFO L119 LiptonReduction]: Number of co-enabled transitions 87696 [2023-08-27 05:10:57,165 INFO L134 LiptonReduction]: Checked pairs total: 287935 [2023-08-27 05:10:57,165 INFO L136 LiptonReduction]: Total number of compositions: 270 [2023-08-27 05:10:57,167 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:10:57,167 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:10:57,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:10:57,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:10:57,201 INFO L124 PetriNetUnfolderBase]: 85/409 cut-off events. [2023-08-27 05:10:57,201 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-27 05:10:57,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:10:57,201 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:10:57,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:10:57,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:10:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1560943884, now seen corresponding path program 1 times [2023-08-27 05:10:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:10:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157693541] [2023-08-27 05:10:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:10:57,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:10:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:57,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:10:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:10:57,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:10:57,250 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:10:57,250 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:10:57,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 05:10:57,250 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:10:57,251 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:10:57,251 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:10:57,251 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-27 05:10:57,277 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 05:10:57,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 402 transitions, 924 flow [2023-08-27 05:10:58,685 INFO L124 PetriNetUnfolderBase]: 1127/6295 cut-off events. [2023-08-27 05:10:58,685 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:10:58,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7380 conditions, 6295 events. 1127/6295 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 52815 event pairs, 522 based on Foata normal form. 0/5113 useless extension candidates. Maximal degree in co-relation 3822. Up to 1024 conditions per place. [2023-08-27 05:10:58,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 356 places, 402 transitions, 924 flow [2023-08-27 05:10:58,795 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 356 places, 402 transitions, 924 flow [2023-08-27 05:10:58,796 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:10:58,796 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 356 places, 402 transitions, 924 flow [2023-08-27 05:10:58,796 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 356 places, 402 transitions, 924 flow [2023-08-27 05:10:58,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 356 places, 402 transitions, 924 flow [2023-08-27 05:10:59,962 INFO L124 PetriNetUnfolderBase]: 1127/6295 cut-off events. [2023-08-27 05:10:59,962 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:11:00,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7380 conditions, 6295 events. 1127/6295 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 52815 event pairs, 522 based on Foata normal form. 0/5113 useless extension candidates. Maximal degree in co-relation 3822. Up to 1024 conditions per place. [2023-08-27 05:11:00,270 INFO L119 LiptonReduction]: Number of co-enabled transitions 111456 [2023-08-27 05:11:05,218 INFO L134 LiptonReduction]: Checked pairs total: 374340 [2023-08-27 05:11:05,219 INFO L136 LiptonReduction]: Total number of compositions: 297 [2023-08-27 05:11:05,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:11:05,220 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:11:05,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:11:05,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:11:05,274 INFO L124 PetriNetUnfolderBase]: 115/545 cut-off events. [2023-08-27 05:11:05,275 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-27 05:11:05,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:11:05,275 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:11:05,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:11:05,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:11:05,275 INFO L85 PathProgramCache]: Analyzing trace with hash 100090206, now seen corresponding path program 1 times [2023-08-27 05:11:05,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:11:05,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494433185] [2023-08-27 05:11:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:11:05,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:11:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:11:05,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:11:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:11:05,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:11:05,367 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:11:05,367 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:11:05,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 05:11:05,368 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:11:05,371 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:11:05,371 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:11:05,372 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-27 05:11:05,406 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-27 05:11:05,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 440 transitions, 1024 flow [2023-08-27 05:11:08,064 INFO L124 PetriNetUnfolderBase]: 2419/12258 cut-off events. [2023-08-27 05:11:08,064 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:11:08,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14635 conditions, 12258 events. 2419/12258 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 120984 event pairs, 1291 based on Foata normal form. 0/10033 useless extension candidates. Maximal degree in co-relation 7362. Up to 2304 conditions per place. [2023-08-27 05:11:08,205 INFO L82 GeneralOperation]: Start removeDead. Operand has 389 places, 440 transitions, 1024 flow [2023-08-27 05:11:08,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 389 places, 440 transitions, 1024 flow [2023-08-27 05:11:08,297 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:11:08,297 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 389 places, 440 transitions, 1024 flow [2023-08-27 05:11:08,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 389 places, 440 transitions, 1024 flow [2023-08-27 05:11:08,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 389 places, 440 transitions, 1024 flow [2023-08-27 05:11:10,771 INFO L124 PetriNetUnfolderBase]: 2419/12258 cut-off events. [2023-08-27 05:11:10,771 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:11:10,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14635 conditions, 12258 events. 2419/12258 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 120984 event pairs, 1291 based on Foata normal form. 0/10033 useless extension candidates. Maximal degree in co-relation 7362. Up to 2304 conditions per place. [2023-08-27 05:11:11,537 INFO L119 LiptonReduction]: Number of co-enabled transitions 138024 [2023-08-27 05:11:16,709 INFO L134 LiptonReduction]: Checked pairs total: 475115 [2023-08-27 05:11:16,709 INFO L136 LiptonReduction]: Total number of compositions: 318 [2023-08-27 05:11:16,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:11:16,711 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:11:16,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:11:16,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:11:16,808 INFO L124 PetriNetUnfolderBase]: 170/758 cut-off events. [2023-08-27 05:11:16,808 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-27 05:11:16,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:11:16,808 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:11:16,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:11:16,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:11:16,809 INFO L85 PathProgramCache]: Analyzing trace with hash 295670163, now seen corresponding path program 1 times [2023-08-27 05:11:16,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:11:16,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389714519] [2023-08-27 05:11:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:11:16,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:11:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:11:16,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:11:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:11:16,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:11:16,861 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:11:16,861 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:11:16,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 05:11:16,862 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:11:16,865 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:11:16,865 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:11:16,865 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-27 05:11:16,930 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-27 05:11:16,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 478 transitions, 1126 flow [2023-08-27 05:11:22,740 INFO L124 PetriNetUnfolderBase]: 5247/24365 cut-off events. [2023-08-27 05:11:22,740 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:11:23,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29571 conditions, 24365 events. 5247/24365 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 272958 event pairs, 3084 based on Foata normal form. 0/20073 useless extension candidates. Maximal degree in co-relation 14615. Up to 5120 conditions per place. [2023-08-27 05:11:23,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 422 places, 478 transitions, 1126 flow [2023-08-27 05:11:23,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 422 places, 478 transitions, 1126 flow [2023-08-27 05:11:23,286 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:11:23,286 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 422 places, 478 transitions, 1126 flow [2023-08-27 05:11:23,286 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 422 places, 478 transitions, 1126 flow [2023-08-27 05:11:23,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 478 transitions, 1126 flow [2023-08-27 05:11:28,848 INFO L124 PetriNetUnfolderBase]: 5247/24365 cut-off events. [2023-08-27 05:11:28,848 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:11:29,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29571 conditions, 24365 events. 5247/24365 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 272958 event pairs, 3084 based on Foata normal form. 0/20073 useless extension candidates. Maximal degree in co-relation 14615. Up to 5120 conditions per place. [2023-08-27 05:11:30,411 INFO L119 LiptonReduction]: Number of co-enabled transitions 167400 [2023-08-27 05:11:35,574 INFO L134 LiptonReduction]: Checked pairs total: 577860 [2023-08-27 05:11:35,575 INFO L136 LiptonReduction]: Total number of compositions: 345 [2023-08-27 05:11:35,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:11:35,576 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:11:35,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:11:35,668 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:11:35,668 INFO L124 PetriNetUnfolderBase]: 236/990 cut-off events. [2023-08-27 05:11:35,668 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-27 05:11:35,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:11:35,668 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:11:35,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:11:35,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:11:35,669 INFO L85 PathProgramCache]: Analyzing trace with hash -489267372, now seen corresponding path program 1 times [2023-08-27 05:11:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:11:35,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184909895] [2023-08-27 05:11:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:11:35,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:11:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:11:35,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:11:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:11:35,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:11:35,715 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:11:35,715 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:11:35,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 05:11:35,715 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:11:35,715 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:11:35,715 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:11:35,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-27 05:11:35,750 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-27 05:11:35,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 516 transitions, 1230 flow [2023-08-27 05:11:49,006 INFO L124 PetriNetUnfolderBase]: 11403/49016 cut-off events. [2023-08-27 05:11:49,006 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:11:50,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60380 conditions, 49016 events. 11403/49016 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 611763 event pairs, 7181 based on Foata normal form. 0/40609 useless extension candidates. Maximal degree in co-relation 29549. Up to 11264 conditions per place. [2023-08-27 05:11:50,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 455 places, 516 transitions, 1230 flow [2023-08-27 05:11:50,671 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 455 places, 516 transitions, 1230 flow [2023-08-27 05:11:50,671 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:11:50,672 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 455 places, 516 transitions, 1230 flow [2023-08-27 05:11:50,672 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 455 places, 516 transitions, 1230 flow [2023-08-27 05:11:50,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 455 places, 516 transitions, 1230 flow [2023-08-27 05:12:03,476 INFO L124 PetriNetUnfolderBase]: 11403/49016 cut-off events. [2023-08-27 05:12:03,477 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:12:04,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60380 conditions, 49016 events. 11403/49016 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 611763 event pairs, 7181 based on Foata normal form. 0/40609 useless extension candidates. Maximal degree in co-relation 29549. Up to 11264 conditions per place. [2023-08-27 05:12:07,627 INFO L119 LiptonReduction]: Number of co-enabled transitions 199584 [2023-08-27 05:12:13,167 INFO L134 LiptonReduction]: Checked pairs total: 688188 [2023-08-27 05:12:13,167 INFO L136 LiptonReduction]: Total number of compositions: 373 [2023-08-27 05:12:13,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:12:13,168 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:12:13,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:12:13,320 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:12:13,320 INFO L124 PetriNetUnfolderBase]: 351/1421 cut-off events. [2023-08-27 05:12:13,320 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-27 05:12:13,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:12:13,320 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:12:13,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:12:13,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:12:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash -154447420, now seen corresponding path program 1 times [2023-08-27 05:12:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:12:13,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041114345] [2023-08-27 05:12:13,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:12:13,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:12:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:12:13,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:12:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:12:13,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:12:13,394 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:12:13,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:12:13,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 05:12:13,394 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:12:13,396 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:12:13,396 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:12:13,396 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-27 05:12:13,430 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-27 05:12:13,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 488 places, 554 transitions, 1336 flow [2023-08-27 05:12:45,005 INFO L124 PetriNetUnfolderBase]: 24727/99267 cut-off events. [2023-08-27 05:12:45,005 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:12:49,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123958 conditions, 99267 events. 24727/99267 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1490. Compared 1359199 event pairs, 16398 based on Foata normal form. 0/82649 useless extension candidates. Maximal degree in co-relation 60356. Up to 24576 conditions per place. [2023-08-27 05:12:49,368 INFO L82 GeneralOperation]: Start removeDead. Operand has 488 places, 554 transitions, 1336 flow [2023-08-27 05:12:51,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 488 places, 554 transitions, 1336 flow [2023-08-27 05:12:51,256 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:12:51,256 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 488 places, 554 transitions, 1336 flow [2023-08-27 05:12:51,257 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 488 places, 554 transitions, 1336 flow [2023-08-27 05:12:51,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 488 places, 554 transitions, 1336 flow [2023-08-27 05:13:19,207 INFO L124 PetriNetUnfolderBase]: 24727/99267 cut-off events. [2023-08-27 05:13:19,207 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:13:22,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123958 conditions, 99267 events. 24727/99267 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1490. Compared 1359199 event pairs, 16398 based on Foata normal form. 0/82649 useless extension candidates. Maximal degree in co-relation 60356. Up to 24576 conditions per place. [2023-08-27 05:13:30,475 INFO L119 LiptonReduction]: Number of co-enabled transitions 234576 [2023-08-27 05:13:36,043 INFO L134 LiptonReduction]: Checked pairs total: 819753 [2023-08-27 05:13:36,043 INFO L136 LiptonReduction]: Total number of compositions: 397 [2023-08-27 05:13:36,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:13:36,044 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;@645df14e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:13:36,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:13:36,256 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:13:36,257 INFO L124 PetriNetUnfolderBase]: 574/2095 cut-off events. [2023-08-27 05:13:36,257 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-27 05:13:36,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:13:36,257 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:13:36,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:13:36,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:13:36,257 INFO L85 PathProgramCache]: Analyzing trace with hash -827606372, now seen corresponding path program 1 times [2023-08-27 05:13:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:13:36,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163592375] [2023-08-27 05:13:36,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:13:36,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:13:36,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:13:36,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:13:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:13:36,304 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:13:36,304 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:13:36,304 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:13:36,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 05:13:36,304 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:13:36,305 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:13:36,305 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:13:36,305 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-27 05:13:36,343 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-27 05:13:36,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 521 places, 592 transitions, 1444 flow [2023-08-27 05:14:43,387 INFO L124 PetriNetUnfolderBase]: 53411/201742 cut-off events. [2023-08-27 05:14:43,387 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-27 05:14:52,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255121 conditions, 201742 events. 53411/201742 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2891. Compared 3019862 event pairs, 36879 based on Foata normal form. 0/168721 useless extension candidates. Maximal degree in co-relation 123932. Up to 53248 conditions per place. [2023-08-27 05:14:52,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 521 places, 592 transitions, 1444 flow [2023-08-27 05:14:59,182 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 521 places, 592 transitions, 1444 flow [2023-08-27 05:14:59,183 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:14:59,183 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 521 places, 592 transitions, 1444 flow [2023-08-27 05:14:59,183 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 521 places, 592 transitions, 1444 flow [2023-08-27 05:14:59,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 521 places, 592 transitions, 1444 flow