/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_60-invariant_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 05:17:42,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 05:17:42,951 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 05:17:42,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 05:17:42,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 05:17:42,988 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 05:17:42,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 05:17:42,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 05:17:42,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 05:17:42,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 05:17:42,994 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 05:17:42,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 05:17:42,994 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 05:17:42,995 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 05:17:42,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 05:17:42,996 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 05:17:42,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 05:17:42,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 05:17:42,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 05:17:42,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 05:17:42,997 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 05:17:42,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 05:17:42,997 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 05:17:42,998 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 05:17:42,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 05:17:42,998 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 05:17:42,998 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 05:17:42,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:17:42,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 05:17:42,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 05:17:43,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 05:17:43,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 05:17:43,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 05:17:43,000 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 05:17:43,001 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 05:17:43,001 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 05:17:43,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 05:17:43,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 05:17:43,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 05:17:43,316 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 05:17:43,318 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 05:17:43,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-27 05:17:44,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 05:17:44,632 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 05:17:44,633 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-27 05:17:44,658 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6b073e7/cbdd65421b4845498102d95633dbddf6/FLAGae1557058 [2023-08-27 05:17:44,672 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a6b073e7/cbdd65421b4845498102d95633dbddf6 [2023-08-27 05:17:44,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 05:17:44,678 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 05:17:44,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 05:17:44,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 05:17:44,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 05:17:44,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:17:44" (1/1) ... [2023-08-27 05:17:44,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b91d007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:44, skipping insertion in model container [2023-08-27 05:17:44,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 05:17:44" (1/1) ... [2023-08-27 05:17:44,738 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 05:17:45,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:17:45,087 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 05:17:45,113 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:17:45,115 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 05:17:45,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 05:17:45,187 INFO L206 MainTranslator]: Completed translation [2023-08-27 05:17:45,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45 WrapperNode [2023-08-27 05:17:45,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 05:17:45,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 05:17:45,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 05:17:45,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 05:17:45,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,207 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,228 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 161 [2023-08-27 05:17:45,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 05:17:45,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 05:17:45,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 05:17:45,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 05:17:45,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,242 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,242 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,251 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,258 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 05:17:45,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 05:17:45,261 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 05:17:45,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 05:17:45,262 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (1/1) ... [2023-08-27 05:17:45,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 05:17:45,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 05:17:45,309 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 05:17:45,330 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 05:17:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 05:17:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 05:17:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 05:17:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 05:17:45,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 05:17:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 05:17:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 05:17:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 05:17:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 05:17:45,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 05:17:45,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 05:17:45,345 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 05:17:45,447 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 05:17:45,448 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 05:17:45,749 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 05:17:45,757 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 05:17:45,758 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-27 05:17:45,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:17:45 BoogieIcfgContainer [2023-08-27 05:17:45,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 05:17:45,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 05:17:45,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 05:17:45,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 05:17:45,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 05:17:44" (1/3) ... [2023-08-27 05:17:45,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23be0b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:17:45, skipping insertion in model container [2023-08-27 05:17:45,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 05:17:45" (2/3) ... [2023-08-27 05:17:45,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23be0b41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 05:17:45, skipping insertion in model container [2023-08-27 05:17:45,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 05:17:45" (3/3) ... [2023-08-27 05:17:45,770 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-08-27 05:17:45,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 05:17:45,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-27 05:17:45,787 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 05:17:45,873 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 05:17:45,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 172 transitions, 352 flow [2023-08-27 05:17:46,036 INFO L124 PetriNetUnfolderBase]: 36/241 cut-off events. [2023-08-27 05:17:46,036 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 05:17:46,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 241 events. 36/241 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 865 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-08-27 05:17:46,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 172 transitions, 352 flow [2023-08-27 05:17:46,050 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 163 transitions, 331 flow [2023-08-27 05:17:46,054 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:17:46,065 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 163 transitions, 331 flow [2023-08-27 05:17:46,068 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 163 transitions, 331 flow [2023-08-27 05:17:46,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 163 transitions, 331 flow [2023-08-27 05:17:46,126 INFO L124 PetriNetUnfolderBase]: 35/232 cut-off events. [2023-08-27 05:17:46,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:17:46,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 232 events. 35/232 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 846 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-08-27 05:17:46,135 INFO L119 LiptonReduction]: Number of co-enabled transitions 9006 [2023-08-27 05:17:48,831 INFO L134 LiptonReduction]: Checked pairs total: 22487 [2023-08-27 05:17:48,832 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-08-27 05:17:48,853 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:17:48,858 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:17:48,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:17:48,863 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:17:48,863 INFO L124 PetriNetUnfolderBase]: 8/44 cut-off events. [2023-08-27 05:17:48,863 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 05:17:48,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:17:48,864 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 05:17:48,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:17:48,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:17:48,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1844712772, now seen corresponding path program 1 times [2023-08-27 05:17:48,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:17:48,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314466415] [2023-08-27 05:17:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:17:48,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:17:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:17:48,974 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:17:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:17:49,013 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:17:49,014 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:17:49,015 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:17:49,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 05:17:49,017 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:17:49,019 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:17:49,020 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:17:49,020 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 05:17:49,044 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 05:17:49,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 231 transitions, 480 flow [2023-08-27 05:17:49,093 INFO L124 PetriNetUnfolderBase]: 62/406 cut-off events. [2023-08-27 05:17:49,093 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:17:49,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 406 events. 62/406 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1624 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 243. Up to 9 conditions per place. [2023-08-27 05:17:49,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 231 transitions, 480 flow [2023-08-27 05:17:49,101 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 231 transitions, 480 flow [2023-08-27 05:17:49,101 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:17:49,101 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 231 transitions, 480 flow [2023-08-27 05:17:49,101 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 231 transitions, 480 flow [2023-08-27 05:17:49,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 231 transitions, 480 flow [2023-08-27 05:17:49,142 INFO L124 PetriNetUnfolderBase]: 62/406 cut-off events. [2023-08-27 05:17:49,143 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 05:17:49,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 406 events. 62/406 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1624 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 243. Up to 9 conditions per place. [2023-08-27 05:17:49,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 26676 [2023-08-27 05:17:52,326 INFO L134 LiptonReduction]: Checked pairs total: 84187 [2023-08-27 05:17:52,326 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-08-27 05:17:52,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:17:52,329 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:17:52,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:17:52,340 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:17:52,340 INFO L124 PetriNetUnfolderBase]: 30/124 cut-off events. [2023-08-27 05:17:52,341 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 05:17:52,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:17:52,341 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 05:17:52,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:17:52,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:17:52,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1206318272, now seen corresponding path program 1 times [2023-08-27 05:17:52,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:17:52,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61700437] [2023-08-27 05:17:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:17:52,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:17:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:17:52,400 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:17:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:17:52,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:17:52,440 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:17:52,440 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:17:52,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 05:17:52,440 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:17:52,445 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:17:52,445 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:17:52,445 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 05:17:52,477 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 05:17:52,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 290 transitions, 610 flow [2023-08-27 05:17:52,565 INFO L124 PetriNetUnfolderBase]: 93/612 cut-off events. [2023-08-27 05:17:52,565 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:17:52,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 612 events. 93/612 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2617 event pairs, 1 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 414. Up to 16 conditions per place. [2023-08-27 05:17:52,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 290 transitions, 610 flow [2023-08-27 05:17:52,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 290 transitions, 610 flow [2023-08-27 05:17:52,582 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:17:52,582 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 290 transitions, 610 flow [2023-08-27 05:17:52,582 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 290 transitions, 610 flow [2023-08-27 05:17:52,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 290 transitions, 610 flow [2023-08-27 05:17:52,655 INFO L124 PetriNetUnfolderBase]: 93/612 cut-off events. [2023-08-27 05:17:52,656 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-27 05:17:52,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 612 events. 93/612 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2617 event pairs, 1 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 414. Up to 16 conditions per place. [2023-08-27 05:17:52,688 INFO L119 LiptonReduction]: Number of co-enabled transitions 50274 [2023-08-27 05:17:55,929 INFO L134 LiptonReduction]: Checked pairs total: 146346 [2023-08-27 05:17:55,929 INFO L136 LiptonReduction]: Total number of compositions: 232 [2023-08-27 05:17:55,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:17:55,932 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:17:55,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:17:55,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:17:55,957 INFO L124 PetriNetUnfolderBase]: 53/208 cut-off events. [2023-08-27 05:17:55,957 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-27 05:17:55,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:17:55,958 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 05:17:55,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:17:55,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:17:55,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1470702247, now seen corresponding path program 1 times [2023-08-27 05:17:55,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:17:55,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253929769] [2023-08-27 05:17:55,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:17:55,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:17:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:17:56,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:17:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:17:56,054 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:17:56,054 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:17:56,054 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:17:56,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 05:17:56,054 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:17:56,055 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:17:56,055 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:17:56,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 05:17:56,089 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 05:17:56,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 349 transitions, 742 flow [2023-08-27 05:17:56,273 INFO L124 PetriNetUnfolderBase]: 136/902 cut-off events. [2023-08-27 05:17:56,275 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:17:56,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 902 events. 136/902 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4214 event pairs, 6 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 632. Up to 32 conditions per place. [2023-08-27 05:17:56,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 349 transitions, 742 flow [2023-08-27 05:17:56,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 349 transitions, 742 flow [2023-08-27 05:17:56,310 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:17:56,310 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 349 transitions, 742 flow [2023-08-27 05:17:56,311 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 349 transitions, 742 flow [2023-08-27 05:17:56,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 349 transitions, 742 flow [2023-08-27 05:17:56,445 INFO L124 PetriNetUnfolderBase]: 136/902 cut-off events. [2023-08-27 05:17:56,445 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-27 05:17:56,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 902 events. 136/902 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4214 event pairs, 6 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 632. Up to 32 conditions per place. [2023-08-27 05:17:56,505 INFO L119 LiptonReduction]: Number of co-enabled transitions 80712 [2023-08-27 05:18:00,160 INFO L134 LiptonReduction]: Checked pairs total: 245611 [2023-08-27 05:18:00,161 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-27 05:18:00,162 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:18:00,163 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:18:00,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:18:00,184 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:18:00,184 INFO L124 PetriNetUnfolderBase]: 74/289 cut-off events. [2023-08-27 05:18:00,184 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-27 05:18:00,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:18:00,184 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 05:18:00,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:18:00,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:18:00,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1203613976, now seen corresponding path program 1 times [2023-08-27 05:18:00,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:18:00,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206813038] [2023-08-27 05:18:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:18:00,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:18:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:00,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:18:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:00,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:18:00,226 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:18:00,226 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:18:00,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 05:18:00,226 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:18:00,227 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:18:00,227 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:18:00,227 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 05:18:00,253 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-27 05:18:00,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 408 transitions, 876 flow [2023-08-27 05:18:00,535 INFO L124 PetriNetUnfolderBase]: 207/1364 cut-off events. [2023-08-27 05:18:00,535 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:18:00,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 1364 events. 207/1364 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6989 event pairs, 23 based on Foata normal form. 0/1046 useless extension candidates. Maximal degree in co-relation 947. Up to 80 conditions per place. [2023-08-27 05:18:00,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 408 transitions, 876 flow [2023-08-27 05:18:00,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 408 transitions, 876 flow [2023-08-27 05:18:00,566 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:18:00,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 347 places, 408 transitions, 876 flow [2023-08-27 05:18:00,566 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 347 places, 408 transitions, 876 flow [2023-08-27 05:18:00,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 347 places, 408 transitions, 876 flow [2023-08-27 05:18:00,784 INFO L124 PetriNetUnfolderBase]: 207/1364 cut-off events. [2023-08-27 05:18:00,784 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-27 05:18:00,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 1364 events. 207/1364 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6989 event pairs, 23 based on Foata normal form. 0/1046 useless extension candidates. Maximal degree in co-relation 947. Up to 80 conditions per place. [2023-08-27 05:18:00,904 INFO L119 LiptonReduction]: Number of co-enabled transitions 117990 [2023-08-27 05:18:04,749 INFO L134 LiptonReduction]: Checked pairs total: 404772 [2023-08-27 05:18:04,749 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-08-27 05:18:04,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:18:04,759 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:18:04,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:18:04,790 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:18:04,790 INFO L124 PetriNetUnfolderBase]: 92/374 cut-off events. [2023-08-27 05:18:04,790 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-27 05:18:04,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:18:04,791 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:18:04,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:18:04,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:18:04,791 INFO L85 PathProgramCache]: Analyzing trace with hash 250657316, now seen corresponding path program 1 times [2023-08-27 05:18:04,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:18:04,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225461847] [2023-08-27 05:18:04,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:18:04,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:18:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:04,827 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:18:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:04,867 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:18:04,868 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:18:04,868 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:18:04,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 05:18:04,868 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:18:04,873 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:18:04,873 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:18:04,873 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 05:18:04,911 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-27 05:18:04,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 467 transitions, 1012 flow [2023-08-27 05:18:05,358 INFO L124 PetriNetUnfolderBase]: 342/2178 cut-off events. [2023-08-27 05:18:05,358 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:18:05,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 2178 events. 342/2178 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 13023 event pairs, 72 based on Foata normal form. 0/1697 useless extension candidates. Maximal degree in co-relation 1463. Up to 192 conditions per place. [2023-08-27 05:18:05,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 396 places, 467 transitions, 1012 flow [2023-08-27 05:18:05,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 396 places, 467 transitions, 1012 flow [2023-08-27 05:18:05,458 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:18:05,458 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 396 places, 467 transitions, 1012 flow [2023-08-27 05:18:05,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 396 places, 467 transitions, 1012 flow [2023-08-27 05:18:05,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 467 transitions, 1012 flow [2023-08-27 05:18:05,870 INFO L124 PetriNetUnfolderBase]: 342/2178 cut-off events. [2023-08-27 05:18:05,870 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-27 05:18:05,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 2178 events. 342/2178 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 13023 event pairs, 72 based on Foata normal form. 0/1697 useless extension candidates. Maximal degree in co-relation 1463. Up to 192 conditions per place. [2023-08-27 05:18:06,180 INFO L119 LiptonReduction]: Number of co-enabled transitions 162108 [2023-08-27 05:18:10,262 INFO L134 LiptonReduction]: Checked pairs total: 519162 [2023-08-27 05:18:10,262 INFO L136 LiptonReduction]: Total number of compositions: 372 [2023-08-27 05:18:10,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:18:10,264 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:18:10,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:18:10,296 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:18:10,297 INFO L124 PetriNetUnfolderBase]: 122/484 cut-off events. [2023-08-27 05:18:10,297 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-08-27 05:18:10,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:18:10,297 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:18:10,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:18:10,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:18:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash -62515252, now seen corresponding path program 1 times [2023-08-27 05:18:10,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:18:10,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951544102] [2023-08-27 05:18:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:18:10,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:18:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:10,328 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:18:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:10,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:18:10,376 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:18:10,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:18:10,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 05:18:10,377 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:18:10,377 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:18:10,377 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:18:10,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-27 05:18:10,419 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-27 05:18:10,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 526 transitions, 1150 flow [2023-08-27 05:18:11,295 INFO L124 PetriNetUnfolderBase]: 621/3712 cut-off events. [2023-08-27 05:18:11,295 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:18:11,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4210 conditions, 3712 events. 621/3712 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 26430 event pairs, 201 based on Foata normal form. 0/2940 useless extension candidates. Maximal degree in co-relation 2396. Up to 448 conditions per place. [2023-08-27 05:18:11,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 445 places, 526 transitions, 1150 flow [2023-08-27 05:18:11,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 526 transitions, 1150 flow [2023-08-27 05:18:11,453 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:18:11,453 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 445 places, 526 transitions, 1150 flow [2023-08-27 05:18:11,453 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 445 places, 526 transitions, 1150 flow [2023-08-27 05:18:11,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 526 transitions, 1150 flow [2023-08-27 05:18:12,211 INFO L124 PetriNetUnfolderBase]: 621/3712 cut-off events. [2023-08-27 05:18:12,212 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-27 05:18:12,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4210 conditions, 3712 events. 621/3712 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 26430 event pairs, 201 based on Foata normal form. 0/2940 useless extension candidates. Maximal degree in co-relation 2396. Up to 448 conditions per place. [2023-08-27 05:18:12,525 INFO L119 LiptonReduction]: Number of co-enabled transitions 213066 [2023-08-27 05:18:17,205 INFO L134 LiptonReduction]: Checked pairs total: 660047 [2023-08-27 05:18:17,205 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-08-27 05:18:17,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:18:17,209 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:18:17,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:18:17,259 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:18:17,259 INFO L124 PetriNetUnfolderBase]: 147/590 cut-off events. [2023-08-27 05:18:17,259 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-08-27 05:18:17,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:18:17,260 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:18:17,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:18:17,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:18:17,260 INFO L85 PathProgramCache]: Analyzing trace with hash 93773527, now seen corresponding path program 1 times [2023-08-27 05:18:17,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:18:17,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535847352] [2023-08-27 05:18:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:18:17,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:18:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:17,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:18:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:17,329 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:18:17,329 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:18:17,329 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:18:17,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 05:18:17,330 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:18:17,330 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:18:17,330 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:18:17,330 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-27 05:18:17,367 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-27 05:18:17,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 585 transitions, 1290 flow [2023-08-27 05:18:19,020 INFO L124 PetriNetUnfolderBase]: 1220/6718 cut-off events. [2023-08-27 05:18:19,021 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:18:19,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7803 conditions, 6718 events. 1220/6718 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 56300 event pairs, 522 based on Foata normal form. 0/5399 useless extension candidates. Maximal degree in co-relation 4194. Up to 1024 conditions per place. [2023-08-27 05:18:19,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 494 places, 585 transitions, 1290 flow [2023-08-27 05:18:19,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 494 places, 585 transitions, 1290 flow [2023-08-27 05:18:19,201 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:18:19,201 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 494 places, 585 transitions, 1290 flow [2023-08-27 05:18:19,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 494 places, 585 transitions, 1290 flow [2023-08-27 05:18:19,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 494 places, 585 transitions, 1290 flow [2023-08-27 05:18:20,854 INFO L124 PetriNetUnfolderBase]: 1220/6718 cut-off events. [2023-08-27 05:18:20,854 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-27 05:18:20,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7803 conditions, 6718 events. 1220/6718 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 56300 event pairs, 522 based on Foata normal form. 0/5399 useless extension candidates. Maximal degree in co-relation 4194. Up to 1024 conditions per place. [2023-08-27 05:18:21,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 270864 [2023-08-27 05:18:26,120 INFO L134 LiptonReduction]: Checked pairs total: 841512 [2023-08-27 05:18:26,120 INFO L136 LiptonReduction]: Total number of compositions: 463 [2023-08-27 05:18:26,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:18:26,122 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:18:26,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:18:26,177 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:18:26,177 INFO L124 PetriNetUnfolderBase]: 166/707 cut-off events. [2023-08-27 05:18:26,178 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-08-27 05:18:26,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:18:26,178 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:18:26,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:18:26,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:18:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash 615039109, now seen corresponding path program 1 times [2023-08-27 05:18:26,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:18:26,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690176449] [2023-08-27 05:18:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:18:26,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:18:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:26,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:18:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:26,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:18:26,259 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:18:26,259 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:18:26,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 05:18:26,259 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:18:26,259 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:18:26,259 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:18:26,259 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-27 05:18:26,304 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-27 05:18:26,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 644 transitions, 1432 flow [2023-08-27 05:18:29,884 INFO L124 PetriNetUnfolderBase]: 2523/12732 cut-off events. [2023-08-27 05:18:29,884 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:18:30,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15109 conditions, 12732 events. 2523/12732 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 123774 event pairs, 1291 based on Foata normal form. 0/10354 useless extension candidates. Maximal degree in co-relation 7786. Up to 2304 conditions per place. [2023-08-27 05:18:30,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 543 places, 644 transitions, 1432 flow [2023-08-27 05:18:30,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 543 places, 644 transitions, 1432 flow [2023-08-27 05:18:30,338 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:18:30,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 543 places, 644 transitions, 1432 flow [2023-08-27 05:18:30,338 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 543 places, 644 transitions, 1432 flow [2023-08-27 05:18:30,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 644 transitions, 1432 flow [2023-08-27 05:18:33,746 INFO L124 PetriNetUnfolderBase]: 2523/12732 cut-off events. [2023-08-27 05:18:33,747 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-27 05:18:34,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15109 conditions, 12732 events. 2523/12732 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 123774 event pairs, 1291 based on Foata normal form. 0/10354 useless extension candidates. Maximal degree in co-relation 7786. Up to 2304 conditions per place. [2023-08-27 05:18:34,837 INFO L119 LiptonReduction]: Number of co-enabled transitions 335502 [2023-08-27 05:18:40,097 INFO L134 LiptonReduction]: Checked pairs total: 1044538 [2023-08-27 05:18:40,098 INFO L136 LiptonReduction]: Total number of compositions: 507 [2023-08-27 05:18:40,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:18:40,100 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:18:40,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:18:40,186 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:18:40,187 INFO L124 PetriNetUnfolderBase]: 214/882 cut-off events. [2023-08-27 05:18:40,187 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-08-27 05:18:40,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:18:40,187 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:18:40,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:18:40,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:18:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1046695402, now seen corresponding path program 1 times [2023-08-27 05:18:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:18:40,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257124594] [2023-08-27 05:18:40,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:18:40,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:18:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:40,205 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:18:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:18:40,226 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:18:40,226 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:18:40,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:18:40,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 05:18:40,227 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:18:40,227 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:18:40,228 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:18:40,228 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-27 05:18:40,267 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-27 05:18:40,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 592 places, 703 transitions, 1576 flow [2023-08-27 05:18:48,007 INFO L124 PetriNetUnfolderBase]: 5362/24890 cut-off events. [2023-08-27 05:18:48,007 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:18:48,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30096 conditions, 24890 events. 5362/24890 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 275669 event pairs, 3084 based on Foata normal form. 0/20429 useless extension candidates. Maximal degree in co-relation 15092. Up to 5120 conditions per place. [2023-08-27 05:18:48,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 592 places, 703 transitions, 1576 flow [2023-08-27 05:18:49,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 592 places, 703 transitions, 1576 flow [2023-08-27 05:18:49,346 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:18:49,346 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 592 places, 703 transitions, 1576 flow [2023-08-27 05:18:49,346 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 592 places, 703 transitions, 1576 flow [2023-08-27 05:18:49,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 592 places, 703 transitions, 1576 flow [2023-08-27 05:18:56,888 INFO L124 PetriNetUnfolderBase]: 5362/24890 cut-off events. [2023-08-27 05:18:56,889 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-27 05:18:57,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30096 conditions, 24890 events. 5362/24890 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 275669 event pairs, 3084 based on Foata normal form. 0/20429 useless extension candidates. Maximal degree in co-relation 15092. Up to 5120 conditions per place. [2023-08-27 05:18:59,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 406980 [2023-08-27 05:19:05,549 INFO L134 LiptonReduction]: Checked pairs total: 1279873 [2023-08-27 05:19:05,550 INFO L136 LiptonReduction]: Total number of compositions: 559 [2023-08-27 05:19:05,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:19:05,551 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:19:05,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:19:05,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:19:05,685 INFO L124 PetriNetUnfolderBase]: 273/1114 cut-off events. [2023-08-27 05:19:05,686 INFO L125 PetriNetUnfolderBase]: For 400/400 co-relation queries the response was YES. [2023-08-27 05:19:05,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:19:05,686 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:19:05,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:19:05,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:19:05,686 INFO L85 PathProgramCache]: Analyzing trace with hash -308124897, now seen corresponding path program 1 times [2023-08-27 05:19:05,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:19:05,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664121399] [2023-08-27 05:19:05,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:19:05,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:19:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:19:05,709 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:19:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:19:05,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:19:05,734 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:19:05,734 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:19:05,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 05:19:05,735 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:19:05,735 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:19:05,735 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:19:05,735 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-27 05:19:05,784 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-27 05:19:05,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 762 transitions, 1722 flow [2023-08-27 05:19:22,953 INFO L124 PetriNetUnfolderBase]: 11529/49592 cut-off events. [2023-08-27 05:19:22,953 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:19:26,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60956 conditions, 49592 events. 11529/49592 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 614939 event pairs, 7181 based on Foata normal form. 0/41000 useless extension candidates. Maximal degree in co-relation 30079. Up to 11264 conditions per place. [2023-08-27 05:19:26,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 641 places, 762 transitions, 1722 flow [2023-08-27 05:19:27,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 641 places, 762 transitions, 1722 flow [2023-08-27 05:19:27,107 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:19:27,107 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 641 places, 762 transitions, 1722 flow [2023-08-27 05:19:27,107 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 641 places, 762 transitions, 1722 flow [2023-08-27 05:19:27,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 641 places, 762 transitions, 1722 flow [2023-08-27 05:19:44,518 INFO L124 PetriNetUnfolderBase]: 11529/49592 cut-off events. [2023-08-27 05:19:44,518 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-27 05:19:48,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60956 conditions, 49592 events. 11529/49592 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 614939 event pairs, 7181 based on Foata normal form. 0/41000 useless extension candidates. Maximal degree in co-relation 30079. Up to 11264 conditions per place. [2023-08-27 05:19:53,049 INFO L119 LiptonReduction]: Number of co-enabled transitions 485298 [2023-08-27 05:19:59,086 INFO L134 LiptonReduction]: Checked pairs total: 1517780 [2023-08-27 05:19:59,086 INFO L136 LiptonReduction]: Total number of compositions: 601 [2023-08-27 05:19:59,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:19:59,088 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;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:19:59,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:19:59,252 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:19:59,252 INFO L124 PetriNetUnfolderBase]: 400/1506 cut-off events. [2023-08-27 05:19:59,252 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2023-08-27 05:19:59,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:19:59,252 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 05:19:59,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:19:59,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:19:59,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1851991094, now seen corresponding path program 1 times [2023-08-27 05:19:59,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:19:59,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61758841] [2023-08-27 05:19:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:19:59,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:19:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:19:59,278 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:19:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:19:59,312 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:19:59,312 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:19:59,312 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:19:59,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 05:19:59,313 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:19:59,314 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:19:59,314 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:19:59,314 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-27 05:19:59,359 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-27 05:19:59,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 690 places, 821 transitions, 1870 flow [2023-08-27 05:20:38,716 INFO L124 PetriNetUnfolderBase]: 24864/99894 cut-off events. [2023-08-27 05:20:38,716 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:20:47,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124585 conditions, 99894 events. 24864/99894 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 1364231 event pairs, 16398 based on Foata normal form. 0/83075 useless extension candidates. Maximal degree in co-relation 60939. Up to 24576 conditions per place. [2023-08-27 05:20:47,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 690 places, 821 transitions, 1870 flow [2023-08-27 05:20:51,004 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 690 places, 821 transitions, 1870 flow [2023-08-27 05:20:51,004 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 05:20:51,004 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 690 places, 821 transitions, 1870 flow [2023-08-27 05:20:51,005 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 690 places, 821 transitions, 1870 flow [2023-08-27 05:20:51,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 690 places, 821 transitions, 1870 flow [2023-08-27 05:21:35,422 INFO L124 PetriNetUnfolderBase]: 24864/99894 cut-off events. [2023-08-27 05:21:35,422 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-27 05:21:45,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124585 conditions, 99894 events. 24864/99894 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1482. Compared 1364231 event pairs, 16398 based on Foata normal form. 0/83075 useless extension candidates. Maximal degree in co-relation 60939. Up to 24576 conditions per place. [2023-08-27 05:22:03,200 INFO L119 LiptonReduction]: Number of co-enabled transitions 570456 [2023-08-27 05:22:09,922 INFO L134 LiptonReduction]: Checked pairs total: 1837326 [2023-08-27 05:22:09,922 INFO L136 LiptonReduction]: Total number of compositions: 648 [2023-08-27 05:22:09,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 05:22:09,924 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16b0ede8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 05:22:09,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 05:22:10,184 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 05:22:10,184 INFO L124 PetriNetUnfolderBase]: 573/2031 cut-off events. [2023-08-27 05:22:10,184 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2023-08-27 05:22:10,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 05:22:10,184 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 05:22:10,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 05:22:10,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 05:22:10,185 INFO L85 PathProgramCache]: Analyzing trace with hash -540804790, now seen corresponding path program 1 times [2023-08-27 05:22:10,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 05:22:10,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645512259] [2023-08-27 05:22:10,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 05:22:10,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 05:22:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:22:10,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 05:22:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 05:22:10,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 05:22:10,233 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 05:22:10,233 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 05:22:10,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 05:22:10,233 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 05:22:10,233 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 05:22:10,234 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 05:22:10,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-27 05:22:10,287 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-27 05:22:10,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 739 places, 880 transitions, 2020 flow [2023-08-27 05:23:56,451 INFO L124 PetriNetUnfolderBase]: 53559/202420 cut-off events. [2023-08-27 05:23:56,452 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES.