/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 06:38:33,720 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 06:38:33,791 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 06:38:33,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 06:38:33,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 06:38:33,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 06:38:33,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 06:38:33,828 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 06:38:33,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 06:38:33,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 06:38:33,832 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 06:38:33,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 06:38:33,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 06:38:33,834 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 06:38:33,834 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 06:38:33,834 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 06:38:33,834 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 06:38:33,835 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 06:38:33,835 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 06:38:33,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 06:38:33,835 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 06:38:33,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 06:38:33,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 06:38:33,837 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 06:38:33,837 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 06:38:33,837 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 06:38:33,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 06:38:33,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:38:33,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 06:38:33,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 06:38:33,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 06:38:33,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 06:38:33,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 06:38:33,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 06:38:33,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 06:38:33,839 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 06:38:34,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 06:38:34,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 06:38:34,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 06:38:34,157 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 06:38:34,157 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 06:38:34,158 INFO L431 ainManager$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 [2023-08-24 06:38:35,354 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 06:38:35,607 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 06:38:35,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-24 06:38:35,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c1623f1f/7c5c59cb4dfe49088c8c8113111f7f7e/FLAG69eb1733d [2023-08-24 06:38:35,635 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c1623f1f/7c5c59cb4dfe49088c8c8113111f7f7e [2023-08-24 06:38:35,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 06:38:35,640 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 06:38:35,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 06:38:35,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 06:38:35,645 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 06:38:35,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:38:35" (1/1) ... [2023-08-24 06:38:35,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318acc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:35, skipping insertion in model container [2023-08-24 06:38:35,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:38:35" (1/1) ... [2023-08-24 06:38:35,697 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 06:38:36,028 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2023-08-24 06:38:36,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:38:36,065 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 06:38:36,092 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:38:36,094 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-24 06:38:36,112 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i[30176,30189] [2023-08-24 06:38:36,128 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 06:38:36,170 INFO L206 MainTranslator]: Completed translation [2023-08-24 06:38:36,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36 WrapperNode [2023-08-24 06:38:36,171 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 06:38:36,172 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 06:38:36,172 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 06:38:36,172 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 06:38:36,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,235 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 143 [2023-08-24 06:38:36,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 06:38:36,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 06:38:36,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 06:38:36,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 06:38:36,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,273 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,274 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,277 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 06:38:36,278 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 06:38:36,278 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 06:38:36,278 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 06:38:36,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (1/1) ... [2023-08-24 06:38:36,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 06:38:36,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 06:38:36,312 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 06:38:36,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 06:38:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 06:38:36,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 06:38:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 06:38:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 06:38:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 06:38:36,347 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 06:38:36,348 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 06:38:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 06:38:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 06:38:36,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 06:38:36,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 06:38:36,349 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 06:38:36,472 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 06:38:36,474 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 06:38:36,641 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 06:38:36,648 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 06:38:36,649 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-24 06:38:36,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:38:36 BoogieIcfgContainer [2023-08-24 06:38:36,651 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 06:38:36,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 06:38:36,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 06:38:36,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 06:38:36,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:38:35" (1/3) ... [2023-08-24 06:38:36,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581f507a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:38:36, skipping insertion in model container [2023-08-24 06:38:36,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:38:36" (2/3) ... [2023-08-24 06:38:36,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@581f507a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:38:36, skipping insertion in model container [2023-08-24 06:38:36,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:38:36" (3/3) ... [2023-08-24 06:38:36,657 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-08-24 06:38:36,673 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 06:38:36,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-24 06:38:36,673 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 06:38:36,762 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-24 06:38:36,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 140 transitions, 288 flow [2023-08-24 06:38:36,911 INFO L124 PetriNetUnfolderBase]: 33/197 cut-off events. [2023-08-24 06:38:36,911 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 06:38:36,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203 conditions, 197 events. 33/197 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 650 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 107. Up to 6 conditions per place. [2023-08-24 06:38:36,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 140 transitions, 288 flow [2023-08-24 06:38:36,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 135 transitions, 275 flow [2023-08-24 06:38:36,929 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:36,939 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 135 transitions, 275 flow [2023-08-24 06:38:36,941 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 135 transitions, 275 flow [2023-08-24 06:38:36,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 135 transitions, 275 flow [2023-08-24 06:38:36,992 INFO L124 PetriNetUnfolderBase]: 32/192 cut-off events. [2023-08-24 06:38:36,992 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:38:36,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 192 events. 32/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 640 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 107. Up to 6 conditions per place. [2023-08-24 06:38:36,997 INFO L119 LiptonReduction]: Number of co-enabled transitions 5670 [2023-08-24 06:38:39,391 INFO L134 LiptonReduction]: Checked pairs total: 14740 [2023-08-24 06:38:39,391 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-24 06:38:39,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:39,406 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:39,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:39,411 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:39,411 INFO L124 PetriNetUnfolderBase]: 8/36 cut-off events. [2023-08-24 06:38:39,411 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 06:38:39,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:39,412 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-24 06:38:39,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:39,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1111622217, now seen corresponding path program 1 times [2023-08-24 06:38:39,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:39,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223580906] [2023-08-24 06:38:39,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:39,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:39,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:39,517 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:39,562 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:39,564 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:39,565 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:39,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 06:38:39,566 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:39,569 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:39,569 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:39,569 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-24 06:38:39,594 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 06:38:39,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 187 transitions, 392 flow [2023-08-24 06:38:39,653 INFO L124 PetriNetUnfolderBase]: 57/326 cut-off events. [2023-08-24 06:38:39,653 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:38:39,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 326 events. 57/326 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1230 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 199. Up to 9 conditions per place. [2023-08-24 06:38:39,659 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 187 transitions, 392 flow [2023-08-24 06:38:39,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 187 transitions, 392 flow [2023-08-24 06:38:39,662 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:39,662 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 187 transitions, 392 flow [2023-08-24 06:38:39,662 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 187 transitions, 392 flow [2023-08-24 06:38:39,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 187 transitions, 392 flow [2023-08-24 06:38:39,690 INFO L124 PetriNetUnfolderBase]: 57/326 cut-off events. [2023-08-24 06:38:39,691 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 06:38:39,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 326 events. 57/326 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1230 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 199. Up to 9 conditions per place. [2023-08-24 06:38:39,702 INFO L119 LiptonReduction]: Number of co-enabled transitions 16380 [2023-08-24 06:38:42,118 INFO L134 LiptonReduction]: Checked pairs total: 52236 [2023-08-24 06:38:42,118 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-24 06:38:42,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:42,122 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:42,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:42,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:42,128 INFO L124 PetriNetUnfolderBase]: 29/104 cut-off events. [2023-08-24 06:38:42,128 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 06:38:42,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:42,129 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-24 06:38:42,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:42,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:42,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2079060280, now seen corresponding path program 1 times [2023-08-24 06:38:42,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:42,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070189] [2023-08-24 06:38:42,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:42,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:42,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:42,180 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:42,180 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:42,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:42,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 06:38:42,181 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:42,181 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:42,181 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:42,181 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-24 06:38:42,204 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 06:38:42,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 234 transitions, 498 flow [2023-08-24 06:38:42,276 INFO L124 PetriNetUnfolderBase]: 86/488 cut-off events. [2023-08-24 06:38:42,276 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:38:42,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 488 events. 86/488 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1953 event pairs, 1 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 334. Up to 16 conditions per place. [2023-08-24 06:38:42,281 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 234 transitions, 498 flow [2023-08-24 06:38:42,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 234 transitions, 498 flow [2023-08-24 06:38:42,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:42,285 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 234 transitions, 498 flow [2023-08-24 06:38:42,285 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 234 transitions, 498 flow [2023-08-24 06:38:42,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 234 transitions, 498 flow [2023-08-24 06:38:42,337 INFO L124 PetriNetUnfolderBase]: 86/488 cut-off events. [2023-08-24 06:38:42,337 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-24 06:38:42,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 488 events. 86/488 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1953 event pairs, 1 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 334. Up to 16 conditions per place. [2023-08-24 06:38:42,360 INFO L119 LiptonReduction]: Number of co-enabled transitions 31050 [2023-08-24 06:38:45,079 INFO L134 LiptonReduction]: Checked pairs total: 92787 [2023-08-24 06:38:45,079 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-24 06:38:45,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:45,084 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:45,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:45,097 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:45,098 INFO L124 PetriNetUnfolderBase]: 50/171 cut-off events. [2023-08-24 06:38:45,098 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-24 06:38:45,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:45,098 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-24 06:38:45,103 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:45,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:45,104 INFO L85 PathProgramCache]: Analyzing trace with hash -549592537, now seen corresponding path program 1 times [2023-08-24 06:38:45,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:45,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161926032] [2023-08-24 06:38:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:45,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:45,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:45,158 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:45,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:45,200 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:45,200 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:45,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 06:38:45,201 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:45,201 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:45,201 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:45,202 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-24 06:38:45,239 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-24 06:38:45,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 281 transitions, 606 flow [2023-08-24 06:38:45,343 INFO L124 PetriNetUnfolderBase]: 127/718 cut-off events. [2023-08-24 06:38:45,343 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:38:45,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 718 events. 127/718 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3038 event pairs, 6 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 508. Up to 32 conditions per place. [2023-08-24 06:38:45,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 281 transitions, 606 flow [2023-08-24 06:38:45,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 281 transitions, 606 flow [2023-08-24 06:38:45,367 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:45,367 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 281 transitions, 606 flow [2023-08-24 06:38:45,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 281 transitions, 606 flow [2023-08-24 06:38:45,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 281 transitions, 606 flow [2023-08-24 06:38:45,456 INFO L124 PetriNetUnfolderBase]: 127/718 cut-off events. [2023-08-24 06:38:45,456 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-24 06:38:45,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 718 events. 127/718 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3038 event pairs, 6 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 508. Up to 32 conditions per place. [2023-08-24 06:38:45,490 INFO L119 LiptonReduction]: Number of co-enabled transitions 50040 [2023-08-24 06:38:48,225 INFO L134 LiptonReduction]: Checked pairs total: 158268 [2023-08-24 06:38:48,225 INFO L136 LiptonReduction]: Total number of compositions: 196 [2023-08-24 06:38:48,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:48,228 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:48,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:48,244 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:48,244 INFO L124 PetriNetUnfolderBase]: 64/228 cut-off events. [2023-08-24 06:38:48,244 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-24 06:38:48,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:48,244 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-24 06:38:48,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:48,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:48,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1888829677, now seen corresponding path program 1 times [2023-08-24 06:38:48,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:48,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986272844] [2023-08-24 06:38:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:48,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:48,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:48,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:48,287 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:48,287 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:48,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 06:38:48,287 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:48,288 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:48,288 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:48,288 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-24 06:38:48,310 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-24 06:38:48,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 328 transitions, 716 flow [2023-08-24 06:38:48,471 INFO L124 PetriNetUnfolderBase]: 196/1088 cut-off events. [2023-08-24 06:38:48,471 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:38:48,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 1088 events. 196/1088 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5222 event pairs, 23 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 763. Up to 80 conditions per place. [2023-08-24 06:38:48,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 328 transitions, 716 flow [2023-08-24 06:38:48,509 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 328 transitions, 716 flow [2023-08-24 06:38:48,510 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:48,510 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 328 transitions, 716 flow [2023-08-24 06:38:48,510 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 328 transitions, 716 flow [2023-08-24 06:38:48,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 328 transitions, 716 flow [2023-08-24 06:38:48,686 INFO L124 PetriNetUnfolderBase]: 196/1088 cut-off events. [2023-08-24 06:38:48,687 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-24 06:38:48,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 1088 events. 196/1088 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5222 event pairs, 23 based on Foata normal form. 0/897 useless extension candidates. Maximal degree in co-relation 763. Up to 80 conditions per place. [2023-08-24 06:38:48,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 73350 [2023-08-24 06:38:51,458 INFO L134 LiptonReduction]: Checked pairs total: 235242 [2023-08-24 06:38:51,458 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-24 06:38:51,459 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:51,460 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:51,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:51,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:51,484 INFO L124 PetriNetUnfolderBase]: 90/311 cut-off events. [2023-08-24 06:38:51,484 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-24 06:38:51,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:51,484 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:38:51,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:51,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1334250394, now seen corresponding path program 1 times [2023-08-24 06:38:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:51,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315841241] [2023-08-24 06:38:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:51,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:51,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:51,543 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:51,543 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:51,544 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:51,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 06:38:51,544 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:51,544 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:51,545 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:51,545 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-24 06:38:51,569 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-24 06:38:51,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 375 transitions, 828 flow [2023-08-24 06:38:51,882 INFO L124 PetriNetUnfolderBase]: 329/1746 cut-off events. [2023-08-24 06:38:51,882 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:38:51,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 1746 events. 329/1746 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9950 event pairs, 72 based on Foata normal form. 0/1468 useless extension candidates. Maximal degree in co-relation 1187. Up to 192 conditions per place. [2023-08-24 06:38:51,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 311 places, 375 transitions, 828 flow [2023-08-24 06:38:51,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 375 transitions, 828 flow [2023-08-24 06:38:51,958 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:51,959 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 311 places, 375 transitions, 828 flow [2023-08-24 06:38:51,959 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 311 places, 375 transitions, 828 flow [2023-08-24 06:38:51,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 311 places, 375 transitions, 828 flow [2023-08-24 06:38:52,295 INFO L124 PetriNetUnfolderBase]: 329/1746 cut-off events. [2023-08-24 06:38:52,296 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-24 06:38:52,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 1746 events. 329/1746 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9950 event pairs, 72 based on Foata normal form. 0/1468 useless extension candidates. Maximal degree in co-relation 1187. Up to 192 conditions per place. [2023-08-24 06:38:52,421 INFO L119 LiptonReduction]: Number of co-enabled transitions 100980 [2023-08-24 06:38:55,379 INFO L134 LiptonReduction]: Checked pairs total: 341058 [2023-08-24 06:38:55,379 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-08-24 06:38:55,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:38:55,381 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:38:55,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:38:55,422 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:38:55,423 INFO L124 PetriNetUnfolderBase]: 113/391 cut-off events. [2023-08-24 06:38:55,423 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-08-24 06:38:55,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:38:55,423 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:38:55,423 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:38:55,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:38:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1896297545, now seen corresponding path program 1 times [2023-08-24 06:38:55,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:38:55,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465539168] [2023-08-24 06:38:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:38:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:38:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:55,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:38:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:38:55,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:38:55,488 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:38:55,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:38:55,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 06:38:55,489 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:38:55,489 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:38:55,489 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:38:55,489 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-24 06:38:55,528 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-24 06:38:55,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 422 transitions, 942 flow [2023-08-24 06:38:56,082 INFO L124 PetriNetUnfolderBase]: 606/2996 cut-off events. [2023-08-24 06:38:56,083 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:38:56,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3494 conditions, 2996 events. 606/2996 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 19982 event pairs, 201 based on Foata normal form. 0/2567 useless extension candidates. Maximal degree in co-relation 1964. Up to 448 conditions per place. [2023-08-24 06:38:56,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 422 transitions, 942 flow [2023-08-24 06:38:56,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 422 transitions, 942 flow [2023-08-24 06:38:56,165 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:38:56,165 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 422 transitions, 942 flow [2023-08-24 06:38:56,165 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 422 transitions, 942 flow [2023-08-24 06:38:56,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 422 transitions, 942 flow [2023-08-24 06:38:56,683 INFO L124 PetriNetUnfolderBase]: 606/2996 cut-off events. [2023-08-24 06:38:56,684 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-24 06:38:56,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3494 conditions, 2996 events. 606/2996 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 19982 event pairs, 201 based on Foata normal form. 0/2567 useless extension candidates. Maximal degree in co-relation 1964. Up to 448 conditions per place. [2023-08-24 06:38:56,875 INFO L119 LiptonReduction]: Number of co-enabled transitions 132930 [2023-08-24 06:39:00,184 INFO L134 LiptonReduction]: Checked pairs total: 443965 [2023-08-24 06:39:00,184 INFO L136 LiptonReduction]: Total number of compositions: 276 [2023-08-24 06:39:00,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:39:00,186 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:39:00,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:39:00,228 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:39:00,228 INFO L124 PetriNetUnfolderBase]: 137/478 cut-off events. [2023-08-24 06:39:00,229 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-08-24 06:39:00,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:39:00,229 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:39:00,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:39:00,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:39:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash -672285148, now seen corresponding path program 1 times [2023-08-24 06:39:00,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:39:00,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009549940] [2023-08-24 06:39:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:39:00,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:39:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:00,251 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:39:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:00,267 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:39:00,267 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:39:00,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:39:00,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 06:39:00,267 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:39:00,268 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:39:00,268 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:39:00,268 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-24 06:39:00,296 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-24 06:39:00,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 469 transitions, 1058 flow [2023-08-24 06:39:01,693 INFO L124 PetriNetUnfolderBase]: 1203/5462 cut-off events. [2023-08-24 06:39:01,693 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:39:01,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6547 conditions, 5462 events. 1203/5462 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 43328 event pairs, 522 based on Foata normal form. 0/4754 useless extension candidates. Maximal degree in co-relation 3478. Up to 1024 conditions per place. [2023-08-24 06:39:01,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 387 places, 469 transitions, 1058 flow [2023-08-24 06:39:01,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 387 places, 469 transitions, 1058 flow [2023-08-24 06:39:01,881 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:39:01,881 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 387 places, 469 transitions, 1058 flow [2023-08-24 06:39:01,882 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 387 places, 469 transitions, 1058 flow [2023-08-24 06:39:01,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 469 transitions, 1058 flow [2023-08-24 06:39:03,002 INFO L124 PetriNetUnfolderBase]: 1203/5462 cut-off events. [2023-08-24 06:39:03,003 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-24 06:39:03,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6547 conditions, 5462 events. 1203/5462 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 43328 event pairs, 522 based on Foata normal form. 0/4754 useless extension candidates. Maximal degree in co-relation 3478. Up to 1024 conditions per place. [2023-08-24 06:39:03,389 INFO L119 LiptonReduction]: Number of co-enabled transitions 169200 [2023-08-24 06:39:06,772 INFO L134 LiptonReduction]: Checked pairs total: 568865 [2023-08-24 06:39:06,772 INFO L136 LiptonReduction]: Total number of compositions: 309 [2023-08-24 06:39:06,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:39:06,774 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:39:06,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:39:06,825 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:39:06,825 INFO L124 PetriNetUnfolderBase]: 175/601 cut-off events. [2023-08-24 06:39:06,825 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-08-24 06:39:06,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:39:06,825 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:39:06,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:39:06,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:39:06,826 INFO L85 PathProgramCache]: Analyzing trace with hash -628933622, now seen corresponding path program 1 times [2023-08-24 06:39:06,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:39:06,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342789153] [2023-08-24 06:39:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:39:06,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:39:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:06,845 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:39:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:06,863 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:39:06,863 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:39:06,863 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:39:06,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 06:39:06,864 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:39:06,864 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:39:06,864 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:39:06,864 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-24 06:39:06,894 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-24 06:39:06,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 516 transitions, 1176 flow [2023-08-24 06:39:09,359 INFO L124 PetriNetUnfolderBase]: 2504/10424 cut-off events. [2023-08-24 06:39:09,359 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:39:09,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12801 conditions, 10424 events. 2504/10424 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 96031 event pairs, 1291 based on Foata normal form. 0/9181 useless extension candidates. Maximal degree in co-relation 6529. Up to 2304 conditions per place. [2023-08-24 06:39:09,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 425 places, 516 transitions, 1176 flow [2023-08-24 06:39:09,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 425 places, 516 transitions, 1176 flow [2023-08-24 06:39:09,657 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:39:09,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 425 places, 516 transitions, 1176 flow [2023-08-24 06:39:09,658 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 425 places, 516 transitions, 1176 flow [2023-08-24 06:39:09,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 516 transitions, 1176 flow [2023-08-24 06:39:11,844 INFO L124 PetriNetUnfolderBase]: 2504/10424 cut-off events. [2023-08-24 06:39:11,845 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-24 06:39:12,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12801 conditions, 10424 events. 2504/10424 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 96031 event pairs, 1291 based on Foata normal form. 0/9181 useless extension candidates. Maximal degree in co-relation 6529. Up to 2304 conditions per place. [2023-08-24 06:39:12,587 INFO L119 LiptonReduction]: Number of co-enabled transitions 209790 [2023-08-24 06:39:16,266 INFO L134 LiptonReduction]: Checked pairs total: 705443 [2023-08-24 06:39:16,266 INFO L136 LiptonReduction]: Total number of compositions: 342 [2023-08-24 06:39:16,268 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:39:16,268 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:39:16,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:39:16,336 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:39:16,336 INFO L124 PetriNetUnfolderBase]: 221/741 cut-off events. [2023-08-24 06:39:16,336 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-08-24 06:39:16,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:39:16,337 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:39:16,337 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:39:16,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:39:16,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1796082526, now seen corresponding path program 1 times [2023-08-24 06:39:16,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:39:16,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361132908] [2023-08-24 06:39:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:39:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:39:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:16,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:39:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:16,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:39:16,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:39:16,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:39:16,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 06:39:16,404 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:39:16,404 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:39:16,404 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:39:16,405 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-24 06:39:16,442 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-24 06:39:16,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 563 transitions, 1296 flow [2023-08-24 06:39:21,495 INFO L124 PetriNetUnfolderBase]: 5341/20506 cut-off events. [2023-08-24 06:39:21,495 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:39:21,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25712 conditions, 20506 events. 5341/20506 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 214477 event pairs, 3084 based on Foata normal form. 0/18216 useless extension candidates. Maximal degree in co-relation 12781. Up to 5120 conditions per place. [2023-08-24 06:39:21,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 463 places, 563 transitions, 1296 flow [2023-08-24 06:39:22,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 563 transitions, 1296 flow [2023-08-24 06:39:22,406 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:39:22,406 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 463 places, 563 transitions, 1296 flow [2023-08-24 06:39:22,407 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 463 places, 563 transitions, 1296 flow [2023-08-24 06:39:22,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 563 transitions, 1296 flow [2023-08-24 06:39:27,378 INFO L124 PetriNetUnfolderBase]: 5341/20506 cut-off events. [2023-08-24 06:39:27,379 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-24 06:39:27,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25712 conditions, 20506 events. 5341/20506 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 214477 event pairs, 3084 based on Foata normal form. 0/18216 useless extension candidates. Maximal degree in co-relation 12781. Up to 5120 conditions per place. [2023-08-24 06:39:29,043 INFO L119 LiptonReduction]: Number of co-enabled transitions 254700 [2023-08-24 06:39:32,955 INFO L134 LiptonReduction]: Checked pairs total: 851910 [2023-08-24 06:39:32,956 INFO L136 LiptonReduction]: Total number of compositions: 373 [2023-08-24 06:39:32,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:39:32,957 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:39:32,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:39:33,035 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:39:33,035 INFO L124 PetriNetUnfolderBase]: 281/928 cut-off events. [2023-08-24 06:39:33,035 INFO L125 PetriNetUnfolderBase]: For 400/400 co-relation queries the response was YES. [2023-08-24 06:39:33,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:39:33,035 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:39:33,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:39:33,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:39:33,035 INFO L85 PathProgramCache]: Analyzing trace with hash -736186746, now seen corresponding path program 1 times [2023-08-24 06:39:33,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:39:33,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283808751] [2023-08-24 06:39:33,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:39:33,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:39:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:33,060 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:39:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:39:33,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:39:33,078 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:39:33,079 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:39:33,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 06:39:33,079 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:39:33,079 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:39:33,079 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:39:33,079 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-24 06:39:33,114 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-24 06:39:33,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 501 places, 610 transitions, 1418 flow [2023-08-24 06:39:44,367 INFO L124 PetriNetUnfolderBase]: 11506/41084 cut-off events. [2023-08-24 06:39:44,367 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:39:45,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52448 conditions, 41084 events. 11506/41084 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 479285 event pairs, 7181 based on Foata normal form. 0/36723 useless extension candidates. Maximal degree in co-relation 25691. Up to 11264 conditions per place. [2023-08-24 06:39:45,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 501 places, 610 transitions, 1418 flow [2023-08-24 06:39:46,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 501 places, 610 transitions, 1418 flow [2023-08-24 06:39:46,861 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:39:46,861 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 501 places, 610 transitions, 1418 flow [2023-08-24 06:39:46,861 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 501 places, 610 transitions, 1418 flow [2023-08-24 06:39:46,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 501 places, 610 transitions, 1418 flow [2023-08-24 06:39:58,016 INFO L124 PetriNetUnfolderBase]: 11506/41084 cut-off events. [2023-08-24 06:39:58,016 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-24 06:39:59,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52448 conditions, 41084 events. 11506/41084 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 479285 event pairs, 7181 based on Foata normal form. 0/36723 useless extension candidates. Maximal degree in co-relation 25691. Up to 11264 conditions per place. [2023-08-24 06:40:01,986 INFO L119 LiptonReduction]: Number of co-enabled transitions 303930 [2023-08-24 06:40:06,181 INFO L134 LiptonReduction]: Checked pairs total: 1017340 [2023-08-24 06:40:06,182 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-08-24 06:40:06,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:40:06,184 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:40:06,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:40:06,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:40:06,356 INFO L124 PetriNetUnfolderBase]: 384/1210 cut-off events. [2023-08-24 06:40:06,356 INFO L125 PetriNetUnfolderBase]: For 604/604 co-relation queries the response was YES. [2023-08-24 06:40:06,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:40:06,356 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:40:06,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:40:06,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:40:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1194739789, now seen corresponding path program 1 times [2023-08-24 06:40:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:40:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336992558] [2023-08-24 06:40:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:40:06,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:40:06,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:40:06,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:40:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:40:06,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:40:06,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:40:06,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:40:06,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 06:40:06,403 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:40:06,403 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:40:06,404 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:40:06,404 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-24 06:40:06,446 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-24 06:40:06,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 539 places, 657 transitions, 1542 flow [2023-08-24 06:40:33,694 INFO L124 PetriNetUnfolderBase]: 24839/83166 cut-off events. [2023-08-24 06:40:33,694 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:40:41,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107857 conditions, 83166 events. 24839/83166 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 1064529 event pairs, 16398 based on Foata normal form. 0/74686 useless extension candidates. Maximal degree in co-relation 52427. Up to 24576 conditions per place. [2023-08-24 06:40:41,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 539 places, 657 transitions, 1542 flow [2023-08-24 06:40:43,266 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 539 places, 657 transitions, 1542 flow [2023-08-24 06:40:43,267 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:40:43,267 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 539 places, 657 transitions, 1542 flow [2023-08-24 06:40:43,267 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 539 places, 657 transitions, 1542 flow [2023-08-24 06:40:43,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 539 places, 657 transitions, 1542 flow [2023-08-24 06:41:08,207 INFO L124 PetriNetUnfolderBase]: 24839/83166 cut-off events. [2023-08-24 06:41:08,207 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-24 06:41:14,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107857 conditions, 83166 events. 24839/83166 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 1064529 event pairs, 16398 based on Foata normal form. 0/74686 useless extension candidates. Maximal degree in co-relation 52427. Up to 24576 conditions per place. [2023-08-24 06:41:22,043 INFO L119 LiptonReduction]: Number of co-enabled transitions 357480 [2023-08-24 06:41:26,530 INFO L134 LiptonReduction]: Checked pairs total: 1220393 [2023-08-24 06:41:26,530 INFO L136 LiptonReduction]: Total number of compositions: 429 [2023-08-24 06:41:26,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:41:26,532 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:41:26,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:41:26,712 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:41:26,712 INFO L124 PetriNetUnfolderBase]: 554/1629 cut-off events. [2023-08-24 06:41:26,712 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2023-08-24 06:41:26,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:41:26,712 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:41:26,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:41:26,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:41:26,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1091255163, now seen corresponding path program 1 times [2023-08-24 06:41:26,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:41:26,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817314856] [2023-08-24 06:41:26,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:41:26,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:41:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:41:26,742 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:41:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:41:26,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:41:26,773 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:41:26,773 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:41:26,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 06:41:26,774 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:41:26,774 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:41:26,774 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:41:26,774 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-24 06:41:26,834 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-24 06:41:26,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 577 places, 704 transitions, 1668 flow [2023-08-24 06:42:26,019 INFO L124 PetriNetUnfolderBase]: 53532/169280 cut-off events. [2023-08-24 06:42:26,019 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-24 06:42:40,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222659 conditions, 169280 events. 53532/169280 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2807. Compared 2355261 event pairs, 36879 based on Foata normal form. 0/152585 useless extension candidates. Maximal degree in co-relation 107836. Up to 53248 conditions per place. [2023-08-24 06:42:40,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 577 places, 704 transitions, 1668 flow [2023-08-24 06:42:47,019 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 577 places, 704 transitions, 1668 flow [2023-08-24 06:42:47,019 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 06:42:47,019 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 577 places, 704 transitions, 1668 flow [2023-08-24 06:42:47,019 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 577 places, 704 transitions, 1668 flow [2023-08-24 06:42:47,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 577 places, 704 transitions, 1668 flow [2023-08-24 06:43:44,833 INFO L124 PetriNetUnfolderBase]: 53532/169280 cut-off events. [2023-08-24 06:43:44,833 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-24 06:43:59,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222659 conditions, 169280 events. 53532/169280 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2807. Compared 2355261 event pairs, 36879 based on Foata normal form. 0/152585 useless extension candidates. Maximal degree in co-relation 107836. Up to 53248 conditions per place. [2023-08-24 06:44:24,838 INFO L119 LiptonReduction]: Number of co-enabled transitions 415350 [2023-08-24 06:44:29,638 INFO L134 LiptonReduction]: Checked pairs total: 1446742 [2023-08-24 06:44:29,638 INFO L136 LiptonReduction]: Total number of compositions: 458 [2023-08-24 06:44:29,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-24 06:44:29,640 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;@3192fa96, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 06:44:29,640 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-24 06:44:29,903 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 06:44:29,903 INFO L124 PetriNetUnfolderBase]: 773/2181 cut-off events. [2023-08-24 06:44:29,904 INFO L125 PetriNetUnfolderBase]: For 1317/1317 co-relation queries the response was YES. [2023-08-24 06:44:29,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 06:44:29,904 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 06:44:29,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 06:44:29,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 06:44:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1827982967, now seen corresponding path program 1 times [2023-08-24 06:44:29,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 06:44:29,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878206511] [2023-08-24 06:44:29,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 06:44:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 06:44:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:44:29,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 06:44:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 06:44:29,954 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 06:44:29,955 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 06:44:29,955 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-24 06:44:29,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 06:44:29,955 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-24 06:44:29,956 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-24 06:44:29,956 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-24 06:44:29,956 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-24 06:44:29,997 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-24 06:44:30,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 615 places, 751 transitions, 1796 flow