/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 03:24:07,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 03:24:07,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 03:24:07,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 03:24:07,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 03:24:07,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 03:24:07,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 03:24:07,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 03:24:07,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 03:24:07,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 03:24:07,144 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 03:24:07,144 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 03:24:07,144 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 03:24:07,145 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 03:24:07,145 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 03:24:07,146 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 03:24:07,146 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 03:24:07,146 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 03:24:07,147 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 03:24:07,147 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 03:24:07,147 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 03:24:07,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 03:24:07,148 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 03:24:07,148 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 03:24:07,148 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 03:24:07,149 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 03:24:07,149 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 03:24:07,149 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:24:07,149 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 03:24:07,150 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 03:24:07,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 03:24:07,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 03:24:07,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 03:24:07,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 03:24:07,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 03:24:07,152 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 03:24:07,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 03:24:07,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 03:24:07,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 03:24:07,494 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 03:24:07,495 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 03:24:07,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-27 03:24:08,637 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 03:24:08,910 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 03:24:08,911 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-27 03:24:08,926 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38603661f/a310664812a8453892cd5a12ed3e55da/FLAG0db5bd0c3 [2023-08-27 03:24:08,939 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38603661f/a310664812a8453892cd5a12ed3e55da [2023-08-27 03:24:08,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 03:24:08,944 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 03:24:08,945 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 03:24:08,945 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 03:24:08,948 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 03:24:08,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:24:08" (1/1) ... [2023-08-27 03:24:08,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51afcda3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:08, skipping insertion in model container [2023-08-27 03:24:08,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:24:08" (1/1) ... [2023-08-27 03:24:09,001 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 03:24:09,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:24:09,327 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 03:24:09,358 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-27 03:24:09,360 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [253] [2023-08-27 03:24:09,392 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:24:09,423 INFO L206 MainTranslator]: Completed translation [2023-08-27 03:24:09,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09 WrapperNode [2023-08-27 03:24:09,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 03:24:09,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 03:24:09,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 03:24:09,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 03:24:09,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,463 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 115 [2023-08-27 03:24:09,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 03:24:09,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 03:24:09,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 03:24:09,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 03:24:09,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,482 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,485 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,487 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 03:24:09,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 03:24:09,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 03:24:09,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 03:24:09,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (1/1) ... [2023-08-27 03:24:09,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:24:09,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:24:09,534 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 03:24:09,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 03:24:09,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 03:24:09,572 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-27 03:24:09,572 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-27 03:24:09,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 03:24:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 03:24:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 03:24:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 03:24:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 03:24:09,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 03:24:09,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 03:24:09,575 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 03:24:09,728 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 03:24:09,730 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 03:24:10,014 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 03:24:10,146 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 03:24:10,146 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-27 03:24:10,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:24:10 BoogieIcfgContainer [2023-08-27 03:24:10,148 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 03:24:10,152 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 03:24:10,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 03:24:10,155 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 03:24:10,155 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:24:08" (1/3) ... [2023-08-27 03:24:10,156 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6e6296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:24:10, skipping insertion in model container [2023-08-27 03:24:10,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:24:09" (2/3) ... [2023-08-27 03:24:10,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d6e6296 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:24:10, skipping insertion in model container [2023-08-27 03:24:10,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:24:10" (3/3) ... [2023-08-27 03:24:10,158 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-08-27 03:24:10,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 03:24:10,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-27 03:24:10,175 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 03:24:10,248 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:10,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 109 transitions, 223 flow [2023-08-27 03:24:10,354 INFO L124 PetriNetUnfolderBase]: 11/119 cut-off events. [2023-08-27 03:24:10,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:24:10,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 11/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2023-08-27 03:24:10,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 109 transitions, 223 flow [2023-08-27 03:24:10,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 109 transitions, 223 flow [2023-08-27 03:24:10,369 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:10,381 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 109 transitions, 223 flow [2023-08-27 03:24:10,384 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 109 transitions, 223 flow [2023-08-27 03:24:10,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 109 transitions, 223 flow [2023-08-27 03:24:10,419 INFO L124 PetriNetUnfolderBase]: 11/119 cut-off events. [2023-08-27 03:24:10,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:24:10,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 119 events. 11/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 151 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2023-08-27 03:24:10,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 2080 [2023-08-27 03:24:12,282 INFO L134 LiptonReduction]: Checked pairs total: 3059 [2023-08-27 03:24:12,282 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-27 03:24:12,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:12,299 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:12,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:12,303 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:12,303 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-27 03:24:12,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:24:12,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:12,304 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-27 03:24:12,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:12,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:12,308 INFO L85 PathProgramCache]: Analyzing trace with hash -938808433, now seen corresponding path program 1 times [2023-08-27 03:24:12,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:12,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789908525] [2023-08-27 03:24:12,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:12,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:12,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:12,438 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:12,440 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:12,441 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:12,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 03:24:12,443 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:12,445 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:12,446 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:12,446 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-27 03:24:12,499 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:12,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 190 transitions, 392 flow [2023-08-27 03:24:12,539 INFO L124 PetriNetUnfolderBase]: 21/212 cut-off events. [2023-08-27 03:24:12,540 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 03:24:12,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 21/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 560 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 172. Up to 6 conditions per place. [2023-08-27 03:24:12,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 190 transitions, 392 flow [2023-08-27 03:24:12,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 190 transitions, 392 flow [2023-08-27 03:24:12,545 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:12,545 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 190 transitions, 392 flow [2023-08-27 03:24:12,546 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 190 transitions, 392 flow [2023-08-27 03:24:12,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 190 transitions, 392 flow [2023-08-27 03:24:12,579 INFO L124 PetriNetUnfolderBase]: 21/212 cut-off events. [2023-08-27 03:24:12,579 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 03:24:12,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 212 events. 21/212 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 560 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 172. Up to 6 conditions per place. [2023-08-27 03:24:12,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 17120 [2023-08-27 03:24:14,757 INFO L134 LiptonReduction]: Checked pairs total: 36376 [2023-08-27 03:24:14,757 INFO L136 LiptonReduction]: Total number of compositions: 153 [2023-08-27 03:24:14,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:14,760 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:14,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:14,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:14,766 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2023-08-27 03:24:14,766 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 03:24:14,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:14,767 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-27 03:24:14,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:14,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash -647472918, now seen corresponding path program 1 times [2023-08-27 03:24:14,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:14,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193923054] [2023-08-27 03:24:14,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:14,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:14,797 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:14,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:14,815 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:14,815 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:14,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 03:24:14,815 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:14,816 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:14,816 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:14,816 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-27 03:24:14,866 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:14,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 271 transitions, 563 flow [2023-08-27 03:24:14,920 INFO L124 PetriNetUnfolderBase]: 31/305 cut-off events. [2023-08-27 03:24:14,920 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 03:24:14,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 305 events. 31/305 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1042 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2023-08-27 03:24:14,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 271 transitions, 563 flow [2023-08-27 03:24:14,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 271 transitions, 563 flow [2023-08-27 03:24:14,929 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:14,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 271 transitions, 563 flow [2023-08-27 03:24:14,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 271 transitions, 563 flow [2023-08-27 03:24:14,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 271 transitions, 563 flow [2023-08-27 03:24:15,009 INFO L124 PetriNetUnfolderBase]: 31/305 cut-off events. [2023-08-27 03:24:15,009 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 03:24:15,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 305 events. 31/305 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1042 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 252. Up to 8 conditions per place. [2023-08-27 03:24:15,031 INFO L119 LiptonReduction]: Number of co-enabled transitions 45120 [2023-08-27 03:24:17,665 INFO L134 LiptonReduction]: Checked pairs total: 102602 [2023-08-27 03:24:17,665 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-27 03:24:17,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:17,668 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:17,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:17,676 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:17,676 INFO L124 PetriNetUnfolderBase]: 6/82 cut-off events. [2023-08-27 03:24:17,676 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-27 03:24:17,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:17,676 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-27 03:24:17,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:17,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash -665115709, now seen corresponding path program 1 times [2023-08-27 03:24:17,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:17,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959751496] [2023-08-27 03:24:17,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:17,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:17,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:17,742 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:17,743 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:17,743 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:17,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 03:24:17,743 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:17,744 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:17,744 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:17,744 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-27 03:24:17,843 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:17,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 352 transitions, 736 flow [2023-08-27 03:24:17,930 INFO L124 PetriNetUnfolderBase]: 41/398 cut-off events. [2023-08-27 03:24:17,932 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 03:24:17,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 398 events. 41/398 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1573 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 332. Up to 10 conditions per place. [2023-08-27 03:24:17,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 352 transitions, 736 flow [2023-08-27 03:24:17,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 352 transitions, 736 flow [2023-08-27 03:24:17,945 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:17,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 352 transitions, 736 flow [2023-08-27 03:24:17,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 352 transitions, 736 flow [2023-08-27 03:24:17,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 352 transitions, 736 flow [2023-08-27 03:24:18,017 INFO L124 PetriNetUnfolderBase]: 41/398 cut-off events. [2023-08-27 03:24:18,017 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 03:24:18,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 398 events. 41/398 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1573 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 332. Up to 10 conditions per place. [2023-08-27 03:24:18,047 INFO L119 LiptonReduction]: Number of co-enabled transitions 86080 [2023-08-27 03:24:20,958 INFO L134 LiptonReduction]: Checked pairs total: 202996 [2023-08-27 03:24:20,958 INFO L136 LiptonReduction]: Total number of compositions: 288 [2023-08-27 03:24:20,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:20,961 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:20,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:20,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:20,974 INFO L124 PetriNetUnfolderBase]: 11/128 cut-off events. [2023-08-27 03:24:20,974 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-27 03:24:20,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:20,974 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:20,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:20,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash 702650790, now seen corresponding path program 1 times [2023-08-27 03:24:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813282107] [2023-08-27 03:24:20,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:21,014 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:21,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:21,061 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:21,061 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:21,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 03:24:21,061 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:21,062 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:21,062 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:21,062 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-27 03:24:21,123 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:21,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 433 transitions, 911 flow [2023-08-27 03:24:21,214 INFO L124 PetriNetUnfolderBase]: 51/491 cut-off events. [2023-08-27 03:24:21,214 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 03:24:21,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 491 events. 51/491 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2092 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 412. Up to 12 conditions per place. [2023-08-27 03:24:21,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 398 places, 433 transitions, 911 flow [2023-08-27 03:24:21,233 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 433 transitions, 911 flow [2023-08-27 03:24:21,233 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:21,233 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 398 places, 433 transitions, 911 flow [2023-08-27 03:24:21,234 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 398 places, 433 transitions, 911 flow [2023-08-27 03:24:21,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 398 places, 433 transitions, 911 flow [2023-08-27 03:24:21,321 INFO L124 PetriNetUnfolderBase]: 51/491 cut-off events. [2023-08-27 03:24:21,321 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 03:24:21,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 491 events. 51/491 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2092 event pairs, 0 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 412. Up to 12 conditions per place. [2023-08-27 03:24:21,368 INFO L119 LiptonReduction]: Number of co-enabled transitions 140000 [2023-08-27 03:24:24,771 INFO L134 LiptonReduction]: Checked pairs total: 334382 [2023-08-27 03:24:24,771 INFO L136 LiptonReduction]: Total number of compositions: 359 [2023-08-27 03:24:24,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:24,774 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:24,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:24,791 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:24,791 INFO L124 PetriNetUnfolderBase]: 14/161 cut-off events. [2023-08-27 03:24:24,791 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 03:24:24,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:24,791 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:24,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:24,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1679710503, now seen corresponding path program 1 times [2023-08-27 03:24:24,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:24,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62740150] [2023-08-27 03:24:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:24,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:24,813 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:24,832 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:24,832 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:24,833 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:24,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 03:24:24,833 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:24,833 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:24,833 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:24,833 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-27 03:24:24,890 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:24,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 472 places, 514 transitions, 1088 flow [2023-08-27 03:24:25,050 INFO L124 PetriNetUnfolderBase]: 61/584 cut-off events. [2023-08-27 03:24:25,051 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-27 03:24:25,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 584 events. 61/584 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2611 event pairs, 0 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 510. Up to 14 conditions per place. [2023-08-27 03:24:25,064 INFO L82 GeneralOperation]: Start removeDead. Operand has 472 places, 514 transitions, 1088 flow [2023-08-27 03:24:25,071 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 472 places, 514 transitions, 1088 flow [2023-08-27 03:24:25,071 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:25,071 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 472 places, 514 transitions, 1088 flow [2023-08-27 03:24:25,072 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 472 places, 514 transitions, 1088 flow [2023-08-27 03:24:25,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 472 places, 514 transitions, 1088 flow [2023-08-27 03:24:25,187 INFO L124 PetriNetUnfolderBase]: 61/584 cut-off events. [2023-08-27 03:24:25,188 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-27 03:24:25,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 624 conditions, 584 events. 61/584 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2611 event pairs, 0 based on Foata normal form. 0/450 useless extension candidates. Maximal degree in co-relation 510. Up to 14 conditions per place. [2023-08-27 03:24:25,255 INFO L119 LiptonReduction]: Number of co-enabled transitions 206880 [2023-08-27 03:24:29,378 INFO L134 LiptonReduction]: Checked pairs total: 530332 [2023-08-27 03:24:29,379 INFO L136 LiptonReduction]: Total number of compositions: 428 [2023-08-27 03:24:29,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:29,381 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:29,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:29,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:29,403 INFO L124 PetriNetUnfolderBase]: 20/200 cut-off events. [2023-08-27 03:24:29,403 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-27 03:24:29,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:29,404 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:29,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:29,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash -166856006, now seen corresponding path program 1 times [2023-08-27 03:24:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:29,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584865730] [2023-08-27 03:24:29,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:29,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:29,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:29,445 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:29,445 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:29,445 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:29,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 03:24:29,446 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:29,446 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:29,446 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:29,446 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-27 03:24:29,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:29,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 595 transitions, 1267 flow [2023-08-27 03:24:29,691 INFO L124 PetriNetUnfolderBase]: 71/677 cut-off events. [2023-08-27 03:24:29,691 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-27 03:24:29,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 677 events. 71/677 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3137 event pairs, 0 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 611. Up to 16 conditions per place. [2023-08-27 03:24:29,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 546 places, 595 transitions, 1267 flow [2023-08-27 03:24:29,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 546 places, 595 transitions, 1267 flow [2023-08-27 03:24:29,713 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:29,714 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 546 places, 595 transitions, 1267 flow [2023-08-27 03:24:29,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 546 places, 595 transitions, 1267 flow [2023-08-27 03:24:29,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 546 places, 595 transitions, 1267 flow [2023-08-27 03:24:29,866 INFO L124 PetriNetUnfolderBase]: 71/677 cut-off events. [2023-08-27 03:24:29,866 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-27 03:24:29,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 677 events. 71/677 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3137 event pairs, 0 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 611. Up to 16 conditions per place. [2023-08-27 03:24:29,927 INFO L119 LiptonReduction]: Number of co-enabled transitions 286720 [2023-08-27 03:24:34,732 INFO L134 LiptonReduction]: Checked pairs total: 675435 [2023-08-27 03:24:34,733 INFO L136 LiptonReduction]: Total number of compositions: 475 [2023-08-27 03:24:34,734 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:34,735 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:34,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:34,792 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:34,792 INFO L124 PetriNetUnfolderBase]: 23/235 cut-off events. [2023-08-27 03:24:34,792 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-08-27 03:24:34,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:34,793 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:34,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:34,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:34,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1126710002, now seen corresponding path program 1 times [2023-08-27 03:24:34,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:34,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216019712] [2023-08-27 03:24:34,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:34,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:34,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:34,858 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:34,858 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:34,858 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:34,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 03:24:34,859 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:34,859 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:34,859 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:34,859 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-27 03:24:34,939 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:34,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 620 places, 676 transitions, 1448 flow [2023-08-27 03:24:35,140 INFO L124 PetriNetUnfolderBase]: 81/770 cut-off events. [2023-08-27 03:24:35,140 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-27 03:24:35,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 770 events. 81/770 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3677 event pairs, 0 based on Foata normal form. 0/592 useless extension candidates. Maximal degree in co-relation 714. Up to 18 conditions per place. [2023-08-27 03:24:35,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 620 places, 676 transitions, 1448 flow [2023-08-27 03:24:35,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 620 places, 676 transitions, 1448 flow [2023-08-27 03:24:35,183 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:35,184 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 620 places, 676 transitions, 1448 flow [2023-08-27 03:24:35,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 620 places, 676 transitions, 1448 flow [2023-08-27 03:24:35,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 620 places, 676 transitions, 1448 flow [2023-08-27 03:24:35,379 INFO L124 PetriNetUnfolderBase]: 81/770 cut-off events. [2023-08-27 03:24:35,379 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-27 03:24:35,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 770 events. 81/770 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3677 event pairs, 0 based on Foata normal form. 0/592 useless extension candidates. Maximal degree in co-relation 714. Up to 18 conditions per place. [2023-08-27 03:24:35,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 379520 [2023-08-27 03:24:40,606 INFO L134 LiptonReduction]: Checked pairs total: 910747 [2023-08-27 03:24:40,607 INFO L136 LiptonReduction]: Total number of compositions: 538 [2023-08-27 03:24:40,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:40,609 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:40,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:40,647 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:40,647 INFO L124 PetriNetUnfolderBase]: 27/278 cut-off events. [2023-08-27 03:24:40,647 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-27 03:24:40,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:40,647 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:40,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:40,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:40,648 INFO L85 PathProgramCache]: Analyzing trace with hash -928477435, now seen corresponding path program 1 times [2023-08-27 03:24:40,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:40,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676971346] [2023-08-27 03:24:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:40,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:40,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:40,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:40,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:40,693 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:40,693 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:40,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 03:24:40,693 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:40,694 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:40,694 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:40,694 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-27 03:24:40,772 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:40,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 694 places, 757 transitions, 1631 flow [2023-08-27 03:24:41,015 INFO L124 PetriNetUnfolderBase]: 91/863 cut-off events. [2023-08-27 03:24:41,015 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-27 03:24:41,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 863 events. 91/863 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4199 event pairs, 0 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 818. Up to 20 conditions per place. [2023-08-27 03:24:41,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 694 places, 757 transitions, 1631 flow [2023-08-27 03:24:41,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 694 places, 757 transitions, 1631 flow [2023-08-27 03:24:41,059 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:41,059 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 694 places, 757 transitions, 1631 flow [2023-08-27 03:24:41,060 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 694 places, 757 transitions, 1631 flow [2023-08-27 03:24:41,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 694 places, 757 transitions, 1631 flow [2023-08-27 03:24:41,346 INFO L124 PetriNetUnfolderBase]: 91/863 cut-off events. [2023-08-27 03:24:41,347 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-27 03:24:41,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 936 conditions, 863 events. 91/863 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4199 event pairs, 0 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 818. Up to 20 conditions per place. [2023-08-27 03:24:41,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 485280 [2023-08-27 03:24:46,971 INFO L134 LiptonReduction]: Checked pairs total: 1144149 [2023-08-27 03:24:46,972 INFO L136 LiptonReduction]: Total number of compositions: 615 [2023-08-27 03:24:46,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:46,974 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:46,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:47,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:47,026 INFO L124 PetriNetUnfolderBase]: 34/319 cut-off events. [2023-08-27 03:24:47,026 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2023-08-27 03:24:47,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:47,027 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:47,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:47,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:47,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2074719591, now seen corresponding path program 1 times [2023-08-27 03:24:47,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:47,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587133070] [2023-08-27 03:24:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:47,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:47,052 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:47,078 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:47,079 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:47,079 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:47,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 03:24:47,080 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:47,083 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:47,083 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:47,083 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-27 03:24:47,191 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:47,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 768 places, 838 transitions, 1816 flow [2023-08-27 03:24:47,527 INFO L124 PetriNetUnfolderBase]: 101/956 cut-off events. [2023-08-27 03:24:47,527 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-27 03:24:47,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 956 events. 101/956 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4704 event pairs, 0 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 923. Up to 22 conditions per place. [2023-08-27 03:24:47,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 768 places, 838 transitions, 1816 flow [2023-08-27 03:24:47,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 768 places, 838 transitions, 1816 flow [2023-08-27 03:24:47,581 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:47,581 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 768 places, 838 transitions, 1816 flow [2023-08-27 03:24:47,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 768 places, 838 transitions, 1816 flow [2023-08-27 03:24:47,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 768 places, 838 transitions, 1816 flow [2023-08-27 03:24:47,820 INFO L124 PetriNetUnfolderBase]: 101/956 cut-off events. [2023-08-27 03:24:47,820 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-27 03:24:47,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 956 events. 101/956 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4704 event pairs, 0 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 923. Up to 22 conditions per place. [2023-08-27 03:24:48,034 INFO L119 LiptonReduction]: Number of co-enabled transitions 604000 [2023-08-27 03:24:54,645 INFO L134 LiptonReduction]: Checked pairs total: 1417781 [2023-08-27 03:24:54,646 INFO L136 LiptonReduction]: Total number of compositions: 679 [2023-08-27 03:24:54,647 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:24:54,647 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:24:54,647 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:24:54,699 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:24:54,699 INFO L124 PetriNetUnfolderBase]: 34/344 cut-off events. [2023-08-27 03:24:54,699 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2023-08-27 03:24:54,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:24:54,699 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:24:54,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:24:54,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:24:54,700 INFO L85 PathProgramCache]: Analyzing trace with hash -718337358, now seen corresponding path program 1 times [2023-08-27 03:24:54,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:24:54,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002829225] [2023-08-27 03:24:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:24:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:24:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:54,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:24:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:24:54,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:24:54,744 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:24:54,744 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:24:54,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 03:24:54,744 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:24:54,745 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:24:54,745 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:24:54,745 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-27 03:24:54,853 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:24:54,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 842 places, 919 transitions, 2003 flow [2023-08-27 03:24:55,215 INFO L124 PetriNetUnfolderBase]: 111/1049 cut-off events. [2023-08-27 03:24:55,216 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-27 03:24:55,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 1049 events. 111/1049 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5227 event pairs, 0 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 1029. Up to 24 conditions per place. [2023-08-27 03:24:55,257 INFO L82 GeneralOperation]: Start removeDead. Operand has 842 places, 919 transitions, 2003 flow [2023-08-27 03:24:55,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 842 places, 919 transitions, 2003 flow [2023-08-27 03:24:55,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:24:55,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 842 places, 919 transitions, 2003 flow [2023-08-27 03:24:55,269 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 842 places, 919 transitions, 2003 flow [2023-08-27 03:24:55,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 842 places, 919 transitions, 2003 flow [2023-08-27 03:24:55,563 INFO L124 PetriNetUnfolderBase]: 111/1049 cut-off events. [2023-08-27 03:24:55,564 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-27 03:24:55,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 1049 events. 111/1049 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5227 event pairs, 0 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 1029. Up to 24 conditions per place. [2023-08-27 03:24:55,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 735680 [2023-08-27 03:25:02,346 INFO L134 LiptonReduction]: Checked pairs total: 1710996 [2023-08-27 03:25:02,346 INFO L136 LiptonReduction]: Total number of compositions: 735 [2023-08-27 03:25:02,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:02,347 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:02,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:02,392 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:02,392 INFO L124 PetriNetUnfolderBase]: 37/385 cut-off events. [2023-08-27 03:25:02,392 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-08-27 03:25:02,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:02,393 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:02,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:02,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash -907300424, now seen corresponding path program 1 times [2023-08-27 03:25:02,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:02,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456861592] [2023-08-27 03:25:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:02,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:02,432 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:02,454 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:02,455 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:02,455 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:02,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 03:25:02,455 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:02,456 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:02,456 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:02,456 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-27 03:25:02,558 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:02,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 916 places, 1000 transitions, 2192 flow [2023-08-27 03:25:02,924 INFO L124 PetriNetUnfolderBase]: 121/1142 cut-off events. [2023-08-27 03:25:02,924 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-27 03:25:02,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1257 conditions, 1142 events. 121/1142 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5790 event pairs, 0 based on Foata normal form. 0/876 useless extension candidates. Maximal degree in co-relation 1136. Up to 26 conditions per place. [2023-08-27 03:25:02,981 INFO L82 GeneralOperation]: Start removeDead. Operand has 916 places, 1000 transitions, 2192 flow [2023-08-27 03:25:02,998 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 916 places, 1000 transitions, 2192 flow [2023-08-27 03:25:02,998 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:02,998 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 916 places, 1000 transitions, 2192 flow [2023-08-27 03:25:02,998 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 916 places, 1000 transitions, 2192 flow [2023-08-27 03:25:02,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 916 places, 1000 transitions, 2192 flow [2023-08-27 03:25:03,508 INFO L124 PetriNetUnfolderBase]: 121/1142 cut-off events. [2023-08-27 03:25:03,508 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-27 03:25:03,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1257 conditions, 1142 events. 121/1142 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5790 event pairs, 0 based on Foata normal form. 0/876 useless extension candidates. Maximal degree in co-relation 1136. Up to 26 conditions per place. [2023-08-27 03:25:03,711 INFO L119 LiptonReduction]: Number of co-enabled transitions 880320 [2023-08-27 03:25:11,386 INFO L134 LiptonReduction]: Checked pairs total: 2068813 [2023-08-27 03:25:11,387 INFO L136 LiptonReduction]: Total number of compositions: 820 [2023-08-27 03:25:11,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:11,388 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:11,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:11,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:11,444 INFO L124 PetriNetUnfolderBase]: 45/433 cut-off events. [2023-08-27 03:25:11,444 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2023-08-27 03:25:11,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:11,444 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:11,445 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:11,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:11,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1893341862, now seen corresponding path program 1 times [2023-08-27 03:25:11,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:11,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905477519] [2023-08-27 03:25:11,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:11,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:11,467 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:11,490 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:11,490 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:11,491 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:11,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 03:25:11,491 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:11,491 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:11,491 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:11,491 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-27 03:25:11,592 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:11,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 990 places, 1081 transitions, 2383 flow [2023-08-27 03:25:11,986 INFO L124 PetriNetUnfolderBase]: 131/1235 cut-off events. [2023-08-27 03:25:11,986 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2023-08-27 03:25:12,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 1235 events. 131/1235 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6310 event pairs, 0 based on Foata normal form. 0/947 useless extension candidates. Maximal degree in co-relation 1244. Up to 28 conditions per place. [2023-08-27 03:25:12,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 990 places, 1081 transitions, 2383 flow [2023-08-27 03:25:12,074 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 990 places, 1081 transitions, 2383 flow [2023-08-27 03:25:12,074 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:12,074 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 990 places, 1081 transitions, 2383 flow [2023-08-27 03:25:12,074 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 990 places, 1081 transitions, 2383 flow [2023-08-27 03:25:12,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 990 places, 1081 transitions, 2383 flow [2023-08-27 03:25:12,579 INFO L124 PetriNetUnfolderBase]: 131/1235 cut-off events. [2023-08-27 03:25:12,579 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2023-08-27 03:25:12,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 1235 events. 131/1235 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6310 event pairs, 0 based on Foata normal form. 0/947 useless extension candidates. Maximal degree in co-relation 1244. Up to 28 conditions per place. [2023-08-27 03:25:12,819 INFO L119 LiptonReduction]: Number of co-enabled transitions 1037920 [2023-08-27 03:25:21,130 INFO L134 LiptonReduction]: Checked pairs total: 2712314 [2023-08-27 03:25:21,131 INFO L136 LiptonReduction]: Total number of compositions: 891 [2023-08-27 03:25:21,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:21,137 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:21,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:21,198 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:21,199 INFO L124 PetriNetUnfolderBase]: 48/463 cut-off events. [2023-08-27 03:25:21,199 INFO L125 PetriNetUnfolderBase]: For 442/442 co-relation queries the response was YES. [2023-08-27 03:25:21,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:21,199 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:21,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:21,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:21,199 INFO L85 PathProgramCache]: Analyzing trace with hash -121925641, now seen corresponding path program 1 times [2023-08-27 03:25:21,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:21,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013553847] [2023-08-27 03:25:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:21,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:21,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:21,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:21,265 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:21,265 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:21,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 03:25:21,265 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:21,266 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:21,266 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:21,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-27 03:25:21,381 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:21,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1064 places, 1162 transitions, 2576 flow [2023-08-27 03:25:21,852 INFO L124 PetriNetUnfolderBase]: 141/1328 cut-off events. [2023-08-27 03:25:21,852 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-08-27 03:25:21,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1328 events. 141/1328 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6857 event pairs, 0 based on Foata normal form. 0/1018 useless extension candidates. Maximal degree in co-relation 1353. Up to 30 conditions per place. [2023-08-27 03:25:21,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 1064 places, 1162 transitions, 2576 flow [2023-08-27 03:25:21,953 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1064 places, 1162 transitions, 2576 flow [2023-08-27 03:25:21,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:21,954 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1064 places, 1162 transitions, 2576 flow [2023-08-27 03:25:21,954 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1064 places, 1162 transitions, 2576 flow [2023-08-27 03:25:21,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1064 places, 1162 transitions, 2576 flow [2023-08-27 03:25:22,419 INFO L124 PetriNetUnfolderBase]: 141/1328 cut-off events. [2023-08-27 03:25:22,420 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-08-27 03:25:22,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1328 events. 141/1328 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6857 event pairs, 0 based on Foata normal form. 0/1018 useless extension candidates. Maximal degree in co-relation 1353. Up to 30 conditions per place. [2023-08-27 03:25:22,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 1208480 [2023-08-27 03:25:31,502 INFO L134 LiptonReduction]: Checked pairs total: 3223229 [2023-08-27 03:25:31,502 INFO L136 LiptonReduction]: Total number of compositions: 970 [2023-08-27 03:25:31,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:31,504 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:31,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:31,591 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:31,591 INFO L124 PetriNetUnfolderBase]: 55/510 cut-off events. [2023-08-27 03:25:31,591 INFO L125 PetriNetUnfolderBase]: For 546/546 co-relation queries the response was YES. [2023-08-27 03:25:31,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:31,591 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:31,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:31,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1438807211, now seen corresponding path program 1 times [2023-08-27 03:25:31,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:31,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982559055] [2023-08-27 03:25:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:31,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:31,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:31,646 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:31,647 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:31,647 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:31,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 03:25:31,647 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:31,647 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:31,647 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:31,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-27 03:25:31,758 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:31,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1138 places, 1243 transitions, 2771 flow [2023-08-27 03:25:32,298 INFO L124 PetriNetUnfolderBase]: 151/1421 cut-off events. [2023-08-27 03:25:32,299 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2023-08-27 03:25:32,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 1421 events. 151/1421 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7354 event pairs, 0 based on Foata normal form. 0/1089 useless extension candidates. Maximal degree in co-relation 1463. Up to 32 conditions per place. [2023-08-27 03:25:32,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 1138 places, 1243 transitions, 2771 flow [2023-08-27 03:25:32,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1138 places, 1243 transitions, 2771 flow [2023-08-27 03:25:32,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:32,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1138 places, 1243 transitions, 2771 flow [2023-08-27 03:25:32,416 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1138 places, 1243 transitions, 2771 flow [2023-08-27 03:25:32,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1138 places, 1243 transitions, 2771 flow [2023-08-27 03:25:32,954 INFO L124 PetriNetUnfolderBase]: 151/1421 cut-off events. [2023-08-27 03:25:32,954 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2023-08-27 03:25:33,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 1421 events. 151/1421 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7354 event pairs, 0 based on Foata normal form. 0/1089 useless extension candidates. Maximal degree in co-relation 1463. Up to 32 conditions per place. [2023-08-27 03:25:33,253 INFO L119 LiptonReduction]: Number of co-enabled transitions 1392000 [2023-08-27 03:25:43,861 INFO L134 LiptonReduction]: Checked pairs total: 3326751 [2023-08-27 03:25:43,861 INFO L136 LiptonReduction]: Total number of compositions: 1022 [2023-08-27 03:25:43,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:43,863 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:43,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:43,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:43,956 INFO L124 PetriNetUnfolderBase]: 59/541 cut-off events. [2023-08-27 03:25:43,956 INFO L125 PetriNetUnfolderBase]: For 665/665 co-relation queries the response was YES. [2023-08-27 03:25:43,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:43,957 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:43,957 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:43,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2106219331, now seen corresponding path program 1 times [2023-08-27 03:25:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:43,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235177267] [2023-08-27 03:25:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:43,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:43,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:44,013 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:44,013 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:44,013 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:44,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 03:25:44,014 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:44,014 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:44,014 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:44,014 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-08-27 03:25:44,136 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:44,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1212 places, 1324 transitions, 2968 flow [2023-08-27 03:25:44,850 INFO L124 PetriNetUnfolderBase]: 161/1514 cut-off events. [2023-08-27 03:25:44,850 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-27 03:25:44,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1514 events. 161/1514 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 7859 event pairs, 0 based on Foata normal form. 0/1160 useless extension candidates. Maximal degree in co-relation 1574. Up to 34 conditions per place. [2023-08-27 03:25:44,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 1212 places, 1324 transitions, 2968 flow [2023-08-27 03:25:44,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1212 places, 1324 transitions, 2968 flow [2023-08-27 03:25:44,929 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:44,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1212 places, 1324 transitions, 2968 flow [2023-08-27 03:25:44,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1212 places, 1324 transitions, 2968 flow [2023-08-27 03:25:44,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1212 places, 1324 transitions, 2968 flow [2023-08-27 03:25:45,494 INFO L124 PetriNetUnfolderBase]: 161/1514 cut-off events. [2023-08-27 03:25:45,494 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-27 03:25:45,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1514 events. 161/1514 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 7859 event pairs, 0 based on Foata normal form. 0/1160 useless extension candidates. Maximal degree in co-relation 1574. Up to 34 conditions per place. [2023-08-27 03:25:45,885 INFO L119 LiptonReduction]: Number of co-enabled transitions 1588480 [2023-08-27 03:25:56,489 INFO L134 LiptonReduction]: Checked pairs total: 3768337 [2023-08-27 03:25:56,489 INFO L136 LiptonReduction]: Total number of compositions: 1082 [2023-08-27 03:25:56,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:25:56,491 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:25:56,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:25:56,594 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:25:56,594 INFO L124 PetriNetUnfolderBase]: 63/585 cut-off events. [2023-08-27 03:25:56,594 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2023-08-27 03:25:56,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:25:56,594 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:25:56,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:25:56,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:25:56,594 INFO L85 PathProgramCache]: Analyzing trace with hash -245542529, now seen corresponding path program 1 times [2023-08-27 03:25:56,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:25:56,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112911089] [2023-08-27 03:25:56,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:25:56,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:25:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:56,622 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:25:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:25:56,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:25:56,654 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:25:56,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:25:56,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 03:25:56,654 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:25:56,654 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:25:56,655 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:25:56,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-08-27 03:25:56,793 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:25:56,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1286 places, 1405 transitions, 3167 flow [2023-08-27 03:25:57,550 INFO L124 PetriNetUnfolderBase]: 171/1607 cut-off events. [2023-08-27 03:25:57,550 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-08-27 03:25:57,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1812 conditions, 1607 events. 171/1607 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8414 event pairs, 0 based on Foata normal form. 0/1231 useless extension candidates. Maximal degree in co-relation 1686. Up to 36 conditions per place. [2023-08-27 03:25:57,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 1286 places, 1405 transitions, 3167 flow [2023-08-27 03:25:57,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1286 places, 1405 transitions, 3167 flow [2023-08-27 03:25:57,662 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:25:57,663 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1286 places, 1405 transitions, 3167 flow [2023-08-27 03:25:57,663 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1286 places, 1405 transitions, 3167 flow [2023-08-27 03:25:57,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1286 places, 1405 transitions, 3167 flow [2023-08-27 03:25:58,291 INFO L124 PetriNetUnfolderBase]: 171/1607 cut-off events. [2023-08-27 03:25:58,291 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-08-27 03:25:58,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1812 conditions, 1607 events. 171/1607 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8414 event pairs, 0 based on Foata normal form. 0/1231 useless extension candidates. Maximal degree in co-relation 1686. Up to 36 conditions per place. [2023-08-27 03:25:58,732 INFO L119 LiptonReduction]: Number of co-enabled transitions 1797920 [2023-08-27 03:26:10,411 INFO L134 LiptonReduction]: Checked pairs total: 4301411 [2023-08-27 03:26:10,411 INFO L136 LiptonReduction]: Total number of compositions: 1161 [2023-08-27 03:26:10,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:26:10,413 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:26:10,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:26:10,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:26:10,530 INFO L124 PetriNetUnfolderBase]: 67/614 cut-off events. [2023-08-27 03:26:10,530 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2023-08-27 03:26:10,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:26:10,530 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:26:10,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:26:10,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:26:10,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1051839357, now seen corresponding path program 1 times [2023-08-27 03:26:10,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:26:10,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559096795] [2023-08-27 03:26:10,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:26:10,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:26:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:10,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:26:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:10,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:26:10,596 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:26:10,596 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:26:10,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 03:26:10,596 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:26:10,597 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:26:10,597 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:26:10,597 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-08-27 03:26:10,743 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:26:10,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1360 places, 1486 transitions, 3368 flow [2023-08-27 03:26:11,482 INFO L124 PetriNetUnfolderBase]: 181/1700 cut-off events. [2023-08-27 03:26:11,482 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2023-08-27 03:26:11,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 1700 events. 181/1700 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8913 event pairs, 0 based on Foata normal form. 0/1302 useless extension candidates. Maximal degree in co-relation 1799. Up to 38 conditions per place. [2023-08-27 03:26:11,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 1360 places, 1486 transitions, 3368 flow [2023-08-27 03:26:11,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1360 places, 1486 transitions, 3368 flow [2023-08-27 03:26:11,639 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:26:11,639 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1360 places, 1486 transitions, 3368 flow [2023-08-27 03:26:11,639 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1360 places, 1486 transitions, 3368 flow [2023-08-27 03:26:11,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1360 places, 1486 transitions, 3368 flow [2023-08-27 03:26:12,375 INFO L124 PetriNetUnfolderBase]: 181/1700 cut-off events. [2023-08-27 03:26:12,376 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2023-08-27 03:26:12,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 1700 events. 181/1700 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8913 event pairs, 0 based on Foata normal form. 0/1302 useless extension candidates. Maximal degree in co-relation 1799. Up to 38 conditions per place. [2023-08-27 03:26:12,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 2020320 [2023-08-27 03:26:25,056 INFO L134 LiptonReduction]: Checked pairs total: 4768409 [2023-08-27 03:26:25,056 INFO L136 LiptonReduction]: Total number of compositions: 1209 [2023-08-27 03:26:25,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:26:25,058 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:26:25,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:26:25,229 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:26:25,229 INFO L124 PetriNetUnfolderBase]: 70/662 cut-off events. [2023-08-27 03:26:25,229 INFO L125 PetriNetUnfolderBase]: For 1122/1122 co-relation queries the response was YES. [2023-08-27 03:26:25,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:26:25,229 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:26:25,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:26:25,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:26:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash -594337333, now seen corresponding path program 1 times [2023-08-27 03:26:25,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:26:25,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262758901] [2023-08-27 03:26:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:26:25,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:26:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:25,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:26:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:25,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:26:25,302 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:26:25,302 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:26:25,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 03:26:25,302 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:26:25,303 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:26:25,303 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:26:25,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-08-27 03:26:25,500 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:26:25,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1434 places, 1567 transitions, 3571 flow [2023-08-27 03:26:26,397 INFO L124 PetriNetUnfolderBase]: 191/1793 cut-off events. [2023-08-27 03:26:26,397 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-08-27 03:26:26,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 1793 events. 191/1793 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 9479 event pairs, 0 based on Foata normal form. 0/1373 useless extension candidates. Maximal degree in co-relation 1913. Up to 40 conditions per place. [2023-08-27 03:26:26,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 1434 places, 1567 transitions, 3571 flow [2023-08-27 03:26:26,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1434 places, 1567 transitions, 3571 flow [2023-08-27 03:26:26,596 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:26:26,596 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1434 places, 1567 transitions, 3571 flow [2023-08-27 03:26:26,596 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1434 places, 1567 transitions, 3571 flow [2023-08-27 03:26:26,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1434 places, 1567 transitions, 3571 flow [2023-08-27 03:26:27,398 INFO L124 PetriNetUnfolderBase]: 191/1793 cut-off events. [2023-08-27 03:26:27,398 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-08-27 03:26:27,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 1793 events. 191/1793 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 9479 event pairs, 0 based on Foata normal form. 0/1373 useless extension candidates. Maximal degree in co-relation 1913. Up to 40 conditions per place. [2023-08-27 03:26:27,923 INFO L119 LiptonReduction]: Number of co-enabled transitions 2255680 [2023-08-27 03:26:41,473 INFO L134 LiptonReduction]: Checked pairs total: 5412841 [2023-08-27 03:26:41,473 INFO L136 LiptonReduction]: Total number of compositions: 1278 [2023-08-27 03:26:41,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:26:41,475 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:26:41,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:26:41,617 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:26:41,617 INFO L124 PetriNetUnfolderBase]: 75/701 cut-off events. [2023-08-27 03:26:41,617 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-08-27 03:26:41,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:26:41,617 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:26:41,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:26:41,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:26:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1604979993, now seen corresponding path program 1 times [2023-08-27 03:26:41,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:26:41,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997912500] [2023-08-27 03:26:41,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:26:41,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:26:41,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:41,653 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:26:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:41,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:26:41,692 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:26:41,692 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:26:41,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 03:26:41,692 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:26:41,693 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:26:41,693 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:26:41,693 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-08-27 03:26:41,844 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:26:41,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1508 places, 1648 transitions, 3776 flow [2023-08-27 03:26:42,920 INFO L124 PetriNetUnfolderBase]: 201/1886 cut-off events. [2023-08-27 03:26:42,920 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-27 03:26:43,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 1886 events. 201/1886 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 10024 event pairs, 0 based on Foata normal form. 0/1444 useless extension candidates. Maximal degree in co-relation 2028. Up to 42 conditions per place. [2023-08-27 03:26:43,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 1508 places, 1648 transitions, 3776 flow [2023-08-27 03:26:43,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1508 places, 1648 transitions, 3776 flow [2023-08-27 03:26:43,061 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:26:43,061 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1508 places, 1648 transitions, 3776 flow [2023-08-27 03:26:43,061 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1508 places, 1648 transitions, 3776 flow [2023-08-27 03:26:43,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1508 places, 1648 transitions, 3776 flow [2023-08-27 03:26:43,995 INFO L124 PetriNetUnfolderBase]: 201/1886 cut-off events. [2023-08-27 03:26:43,996 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-27 03:26:44,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2157 conditions, 1886 events. 201/1886 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 10024 event pairs, 0 based on Foata normal form. 0/1444 useless extension candidates. Maximal degree in co-relation 2028. Up to 42 conditions per place. [2023-08-27 03:26:45,059 INFO L119 LiptonReduction]: Number of co-enabled transitions 2504000 [2023-08-27 03:26:59,514 INFO L134 LiptonReduction]: Checked pairs total: 6665532 [2023-08-27 03:26:59,514 INFO L136 LiptonReduction]: Total number of compositions: 1351 [2023-08-27 03:26:59,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:26:59,516 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:26:59,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:26:59,675 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:26:59,675 INFO L124 PetriNetUnfolderBase]: 82/737 cut-off events. [2023-08-27 03:26:59,675 INFO L125 PetriNetUnfolderBase]: For 1520/1520 co-relation queries the response was YES. [2023-08-27 03:26:59,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:26:59,675 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:26:59,675 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:26:59,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:26:59,675 INFO L85 PathProgramCache]: Analyzing trace with hash 61181562, now seen corresponding path program 1 times [2023-08-27 03:26:59,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:26:59,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692358732] [2023-08-27 03:26:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:26:59,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:26:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:59,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:26:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:26:59,748 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:26:59,749 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:26:59,749 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:26:59,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 03:26:59,749 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:26:59,750 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:26:59,750 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:26:59,750 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-08-27 03:26:59,916 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:26:59,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1582 places, 1729 transitions, 3983 flow [2023-08-27 03:27:01,345 INFO L124 PetriNetUnfolderBase]: 211/1979 cut-off events. [2023-08-27 03:27:01,345 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2023-08-27 03:27:01,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 1979 events. 211/1979 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 10509 event pairs, 0 based on Foata normal form. 0/1515 useless extension candidates. Maximal degree in co-relation 2144. Up to 44 conditions per place. [2023-08-27 03:27:01,474 INFO L82 GeneralOperation]: Start removeDead. Operand has 1582 places, 1729 transitions, 3983 flow [2023-08-27 03:27:01,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1582 places, 1729 transitions, 3983 flow [2023-08-27 03:27:01,507 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:27:01,507 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1582 places, 1729 transitions, 3983 flow [2023-08-27 03:27:01,508 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1582 places, 1729 transitions, 3983 flow [2023-08-27 03:27:01,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1582 places, 1729 transitions, 3983 flow [2023-08-27 03:27:02,745 INFO L124 PetriNetUnfolderBase]: 211/1979 cut-off events. [2023-08-27 03:27:02,745 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2023-08-27 03:27:02,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2274 conditions, 1979 events. 211/1979 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 10509 event pairs, 0 based on Foata normal form. 0/1515 useless extension candidates. Maximal degree in co-relation 2144. Up to 44 conditions per place. [2023-08-27 03:27:03,490 INFO L119 LiptonReduction]: Number of co-enabled transitions 2765280 [2023-08-27 03:27:19,270 INFO L134 LiptonReduction]: Checked pairs total: 7160854 [2023-08-27 03:27:19,270 INFO L136 LiptonReduction]: Total number of compositions: 1413 [2023-08-27 03:27:19,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:27:19,272 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:27:19,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:27:19,443 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:27:19,443 INFO L124 PetriNetUnfolderBase]: 83/779 cut-off events. [2023-08-27 03:27:19,443 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2023-08-27 03:27:19,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:27:19,443 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:27:19,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:27:19,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:27:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash -202591570, now seen corresponding path program 1 times [2023-08-27 03:27:19,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:27:19,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485237535] [2023-08-27 03:27:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:27:19,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:27:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:19,478 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:27:19,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:19,527 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:27:19,528 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:27:19,528 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:27:19,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 03:27:19,528 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:27:19,528 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:27:19,528 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:27:19,529 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-08-27 03:27:19,701 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:27:19,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1656 places, 1810 transitions, 4192 flow [2023-08-27 03:27:21,031 INFO L124 PetriNetUnfolderBase]: 221/2072 cut-off events. [2023-08-27 03:27:21,031 INFO L125 PetriNetUnfolderBase]: For 2002/2002 co-relation queries the response was YES. [2023-08-27 03:27:21,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 2072 events. 221/2072 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 11041 event pairs, 0 based on Foata normal form. 0/1586 useless extension candidates. Maximal degree in co-relation 2261. Up to 46 conditions per place. [2023-08-27 03:27:21,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 1656 places, 1810 transitions, 4192 flow [2023-08-27 03:27:21,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1656 places, 1810 transitions, 4192 flow [2023-08-27 03:27:21,224 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:27:21,224 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1656 places, 1810 transitions, 4192 flow [2023-08-27 03:27:21,224 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1656 places, 1810 transitions, 4192 flow [2023-08-27 03:27:21,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1656 places, 1810 transitions, 4192 flow [2023-08-27 03:27:22,678 INFO L124 PetriNetUnfolderBase]: 221/2072 cut-off events. [2023-08-27 03:27:22,678 INFO L125 PetriNetUnfolderBase]: For 2002/2002 co-relation queries the response was YES. [2023-08-27 03:27:22,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2392 conditions, 2072 events. 221/2072 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 11041 event pairs, 0 based on Foata normal form. 0/1586 useless extension candidates. Maximal degree in co-relation 2261. Up to 46 conditions per place. [2023-08-27 03:27:23,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 3039520 [2023-08-27 03:27:40,320 INFO L134 LiptonReduction]: Checked pairs total: 8074938 [2023-08-27 03:27:40,320 INFO L136 LiptonReduction]: Total number of compositions: 1482 [2023-08-27 03:27:40,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:27:40,322 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:27:40,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:27:40,577 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:27:40,577 INFO L124 PetriNetUnfolderBase]: 91/826 cut-off events. [2023-08-27 03:27:40,577 INFO L125 PetriNetUnfolderBase]: For 2002/2002 co-relation queries the response was YES. [2023-08-27 03:27:40,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:27:40,577 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:27:40,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:27:40,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:27:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1775228194, now seen corresponding path program 1 times [2023-08-27 03:27:40,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:27:40,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155545039] [2023-08-27 03:27:40,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:27:40,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:27:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:40,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:27:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:27:40,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:27:40,675 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:27:40,675 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:27:40,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 03:27:40,675 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:27:40,675 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:27:40,676 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:27:40,676 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-08-27 03:27:40,905 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:27:40,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1730 places, 1891 transitions, 4403 flow [2023-08-27 03:27:42,422 INFO L124 PetriNetUnfolderBase]: 231/2165 cut-off events. [2023-08-27 03:27:42,423 INFO L125 PetriNetUnfolderBase]: For 2277/2277 co-relation queries the response was YES. [2023-08-27 03:27:42,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2511 conditions, 2165 events. 231/2165 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 11558 event pairs, 0 based on Foata normal form. 0/1657 useless extension candidates. Maximal degree in co-relation 2379. Up to 48 conditions per place. [2023-08-27 03:27:42,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 1730 places, 1891 transitions, 4403 flow [2023-08-27 03:27:42,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1730 places, 1891 transitions, 4403 flow [2023-08-27 03:27:42,635 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:27:42,635 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1730 places, 1891 transitions, 4403 flow [2023-08-27 03:27:42,635 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1730 places, 1891 transitions, 4403 flow [2023-08-27 03:27:42,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1730 places, 1891 transitions, 4403 flow [2023-08-27 03:27:44,127 INFO L124 PetriNetUnfolderBase]: 231/2165 cut-off events. [2023-08-27 03:27:44,127 INFO L125 PetriNetUnfolderBase]: For 2277/2277 co-relation queries the response was YES. [2023-08-27 03:27:44,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2511 conditions, 2165 events. 231/2165 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 11558 event pairs, 0 based on Foata normal form. 0/1657 useless extension candidates. Maximal degree in co-relation 2379. Up to 48 conditions per place. [2023-08-27 03:27:44,939 INFO L119 LiptonReduction]: Number of co-enabled transitions 3326720 [2023-08-27 03:28:03,157 INFO L134 LiptonReduction]: Checked pairs total: 8890964 [2023-08-27 03:28:03,157 INFO L136 LiptonReduction]: Total number of compositions: 1581 [2023-08-27 03:28:03,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:28:03,159 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:28:03,159 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:28:03,366 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:28:03,366 INFO L124 PetriNetUnfolderBase]: 102/864 cut-off events. [2023-08-27 03:28:03,366 INFO L125 PetriNetUnfolderBase]: For 2277/2277 co-relation queries the response was YES. [2023-08-27 03:28:03,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:28:03,366 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:28:03,366 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:28:03,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:28:03,366 INFO L85 PathProgramCache]: Analyzing trace with hash -968841972, now seen corresponding path program 1 times [2023-08-27 03:28:03,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:28:03,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849293641] [2023-08-27 03:28:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:28:03,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:28:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:03,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:28:03,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:03,482 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:28:03,482 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:28:03,482 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:28:03,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 03:28:03,482 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:28:03,483 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:28:03,483 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:28:03,483 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-08-27 03:28:03,651 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:28:03,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1804 places, 1972 transitions, 4616 flow [2023-08-27 03:28:05,221 INFO L124 PetriNetUnfolderBase]: 241/2258 cut-off events. [2023-08-27 03:28:05,222 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2023-08-27 03:28:05,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 2258 events. 241/2258 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 12060 event pairs, 0 based on Foata normal form. 0/1728 useless extension candidates. Maximal degree in co-relation 2498. Up to 50 conditions per place. [2023-08-27 03:28:05,401 INFO L82 GeneralOperation]: Start removeDead. Operand has 1804 places, 1972 transitions, 4616 flow [2023-08-27 03:28:05,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1804 places, 1972 transitions, 4616 flow [2023-08-27 03:28:05,443 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:28:05,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1804 places, 1972 transitions, 4616 flow [2023-08-27 03:28:05,443 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1804 places, 1972 transitions, 4616 flow [2023-08-27 03:28:05,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1804 places, 1972 transitions, 4616 flow [2023-08-27 03:28:07,059 INFO L124 PetriNetUnfolderBase]: 241/2258 cut-off events. [2023-08-27 03:28:07,059 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2023-08-27 03:28:07,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 2258 events. 241/2258 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 12060 event pairs, 0 based on Foata normal form. 0/1728 useless extension candidates. Maximal degree in co-relation 2498. Up to 50 conditions per place. [2023-08-27 03:28:07,910 INFO L119 LiptonReduction]: Number of co-enabled transitions 3626880 [2023-08-27 03:28:26,867 INFO L134 LiptonReduction]: Checked pairs total: 8591940 [2023-08-27 03:28:26,867 INFO L136 LiptonReduction]: Total number of compositions: 1617 [2023-08-27 03:28:26,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:28:26,869 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:28:26,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:28:27,088 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:28:27,088 INFO L124 PetriNetUnfolderBase]: 100/894 cut-off events. [2023-08-27 03:28:27,088 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2023-08-27 03:28:27,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:28:27,088 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:28:27,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:28:27,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:28:27,089 INFO L85 PathProgramCache]: Analyzing trace with hash -90863183, now seen corresponding path program 1 times [2023-08-27 03:28:27,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:28:27,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602499231] [2023-08-27 03:28:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:28:27,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:28:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:27,127 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:28:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:27,178 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:28:27,179 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:28:27,179 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:28:27,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 03:28:27,179 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:28:27,179 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:28:27,180 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:28:27,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-08-27 03:28:27,434 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:28:27,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1878 places, 2053 transitions, 4831 flow [2023-08-27 03:28:29,288 INFO L124 PetriNetUnfolderBase]: 251/2351 cut-off events. [2023-08-27 03:28:29,288 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2023-08-27 03:28:29,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 2351 events. 251/2351 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 12579 event pairs, 0 based on Foata normal form. 0/1799 useless extension candidates. Maximal degree in co-relation 2618. Up to 52 conditions per place. [2023-08-27 03:28:29,455 INFO L82 GeneralOperation]: Start removeDead. Operand has 1878 places, 2053 transitions, 4831 flow [2023-08-27 03:28:29,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1878 places, 2053 transitions, 4831 flow [2023-08-27 03:28:29,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:28:29,492 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1878 places, 2053 transitions, 4831 flow [2023-08-27 03:28:29,493 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1878 places, 2053 transitions, 4831 flow [2023-08-27 03:28:29,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1878 places, 2053 transitions, 4831 flow [2023-08-27 03:28:31,306 INFO L124 PetriNetUnfolderBase]: 251/2351 cut-off events. [2023-08-27 03:28:31,307 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2023-08-27 03:28:31,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 2351 events. 251/2351 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 12579 event pairs, 0 based on Foata normal form. 0/1799 useless extension candidates. Maximal degree in co-relation 2618. Up to 52 conditions per place. [2023-08-27 03:28:32,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 3940000 [2023-08-27 03:28:51,206 INFO L134 LiptonReduction]: Checked pairs total: 10436298 [2023-08-27 03:28:51,206 INFO L136 LiptonReduction]: Total number of compositions: 1668 [2023-08-27 03:28:51,208 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:28:51,208 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:28:51,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:28:51,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:28:51,530 INFO L124 PetriNetUnfolderBase]: 101/946 cut-off events. [2023-08-27 03:28:51,531 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2023-08-27 03:28:51,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:28:51,531 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:28:51,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:28:51,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:28:51,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1487402079, now seen corresponding path program 1 times [2023-08-27 03:28:51,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:28:51,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132797502] [2023-08-27 03:28:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:28:51,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:28:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:51,577 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:28:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:28:51,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:28:51,638 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:28:51,638 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:28:51,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 03:28:51,638 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:28:51,638 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:28:51,638 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:28:51,638 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-08-27 03:28:51,832 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:28:51,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1952 places, 2134 transitions, 5048 flow [2023-08-27 03:28:53,646 INFO L124 PetriNetUnfolderBase]: 261/2444 cut-off events. [2023-08-27 03:28:53,646 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2023-08-27 03:28:53,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 2444 events. 261/2444 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 13152 event pairs, 0 based on Foata normal form. 0/1870 useless extension candidates. Maximal degree in co-relation 2739. Up to 54 conditions per place. [2023-08-27 03:28:53,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 1952 places, 2134 transitions, 5048 flow [2023-08-27 03:28:54,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1952 places, 2134 transitions, 5048 flow [2023-08-27 03:28:54,091 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:28:54,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1952 places, 2134 transitions, 5048 flow [2023-08-27 03:28:54,092 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1952 places, 2134 transitions, 5048 flow [2023-08-27 03:28:54,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1952 places, 2134 transitions, 5048 flow [2023-08-27 03:28:56,138 INFO L124 PetriNetUnfolderBase]: 261/2444 cut-off events. [2023-08-27 03:28:56,138 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2023-08-27 03:28:56,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 2444 events. 261/2444 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 13152 event pairs, 0 based on Foata normal form. 0/1870 useless extension candidates. Maximal degree in co-relation 2739. Up to 54 conditions per place. [2023-08-27 03:28:57,195 INFO L119 LiptonReduction]: Number of co-enabled transitions 4266080 [2023-08-27 03:29:17,268 INFO L134 LiptonReduction]: Checked pairs total: 11423808 [2023-08-27 03:29:17,268 INFO L136 LiptonReduction]: Total number of compositions: 1737 [2023-08-27 03:29:17,270 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:29:17,271 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:29:17,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:29:17,625 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:29:17,625 INFO L124 PetriNetUnfolderBase]: 110/992 cut-off events. [2023-08-27 03:29:17,626 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2023-08-27 03:29:17,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:29:17,626 INFO L208 CegarLoopForPetriNet]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:29:17,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:29:17,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:29:17,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1066134889, now seen corresponding path program 1 times [2023-08-27 03:29:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:29:17,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996943261] [2023-08-27 03:29:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:29:17,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:29:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:29:17,670 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:29:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:29:17,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:29:17,728 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:29:17,728 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:29:17,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 03:29:17,729 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:29:17,729 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:29:17,729 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:29:17,729 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-08-27 03:29:17,947 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:29:17,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2026 places, 2215 transitions, 5267 flow [2023-08-27 03:29:20,051 INFO L124 PetriNetUnfolderBase]: 271/2537 cut-off events. [2023-08-27 03:29:20,051 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-27 03:29:20,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 2537 events. 271/2537 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 13644 event pairs, 0 based on Foata normal form. 0/1941 useless extension candidates. Maximal degree in co-relation 2861. Up to 56 conditions per place. [2023-08-27 03:29:20,253 INFO L82 GeneralOperation]: Start removeDead. Operand has 2026 places, 2215 transitions, 5267 flow [2023-08-27 03:29:20,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2026 places, 2215 transitions, 5267 flow [2023-08-27 03:29:20,318 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:29:20,318 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2026 places, 2215 transitions, 5267 flow [2023-08-27 03:29:20,319 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2026 places, 2215 transitions, 5267 flow [2023-08-27 03:29:20,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2026 places, 2215 transitions, 5267 flow [2023-08-27 03:29:22,366 INFO L124 PetriNetUnfolderBase]: 271/2537 cut-off events. [2023-08-27 03:29:22,366 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-27 03:29:22,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2997 conditions, 2537 events. 271/2537 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 13644 event pairs, 0 based on Foata normal form. 0/1941 useless extension candidates. Maximal degree in co-relation 2861. Up to 56 conditions per place. [2023-08-27 03:29:23,494 INFO L119 LiptonReduction]: Number of co-enabled transitions 4605120 [2023-08-27 03:29:45,026 INFO L134 LiptonReduction]: Checked pairs total: 12094848 [2023-08-27 03:29:45,026 INFO L136 LiptonReduction]: Total number of compositions: 1816 [2023-08-27 03:29:45,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:29:45,028 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:29:45,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:29:45,433 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:29:45,433 INFO L124 PetriNetUnfolderBase]: 113/1022 cut-off events. [2023-08-27 03:29:45,433 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-27 03:29:45,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:29:45,433 INFO L208 CegarLoopForPetriNet]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:29:45,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:29:45,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:29:45,433 INFO L85 PathProgramCache]: Analyzing trace with hash -626338969, now seen corresponding path program 1 times [2023-08-27 03:29:45,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:29:45,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001368666] [2023-08-27 03:29:45,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:29:45,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:29:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:29:45,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:29:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:29:45,546 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:29:45,546 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:29:45,546 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:29:45,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-27 03:29:45,546 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:29:45,547 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:29:45,547 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:29:45,547 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-08-27 03:29:45,770 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:29:45,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2100 places, 2296 transitions, 5488 flow [2023-08-27 03:29:47,998 INFO L124 PetriNetUnfolderBase]: 281/2630 cut-off events. [2023-08-27 03:29:47,998 INFO L125 PetriNetUnfolderBase]: For 4032/4032 co-relation queries the response was YES. [2023-08-27 03:29:48,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 2630 events. 281/2630 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 14188 event pairs, 0 based on Foata normal form. 0/2012 useless extension candidates. Maximal degree in co-relation 2984. Up to 58 conditions per place. [2023-08-27 03:29:48,224 INFO L82 GeneralOperation]: Start removeDead. Operand has 2100 places, 2296 transitions, 5488 flow [2023-08-27 03:29:48,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2100 places, 2296 transitions, 5488 flow [2023-08-27 03:29:48,297 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:29:48,297 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2100 places, 2296 transitions, 5488 flow [2023-08-27 03:29:48,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2100 places, 2296 transitions, 5488 flow [2023-08-27 03:29:48,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2100 places, 2296 transitions, 5488 flow [2023-08-27 03:29:50,519 INFO L124 PetriNetUnfolderBase]: 281/2630 cut-off events. [2023-08-27 03:29:50,519 INFO L125 PetriNetUnfolderBase]: For 4032/4032 co-relation queries the response was YES. [2023-08-27 03:29:50,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3121 conditions, 2630 events. 281/2630 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 14188 event pairs, 0 based on Foata normal form. 0/2012 useless extension candidates. Maximal degree in co-relation 2984. Up to 58 conditions per place. [2023-08-27 03:29:51,673 INFO L119 LiptonReduction]: Number of co-enabled transitions 4957120 [2023-08-27 03:30:15,345 INFO L134 LiptonReduction]: Checked pairs total: 13236857 [2023-08-27 03:30:15,345 INFO L136 LiptonReduction]: Total number of compositions: 1880 [2023-08-27 03:30:15,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:30:15,347 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:30:15,347 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:30:15,744 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:30:15,744 INFO L124 PetriNetUnfolderBase]: 120/1064 cut-off events. [2023-08-27 03:30:15,744 INFO L125 PetriNetUnfolderBase]: For 4032/4032 co-relation queries the response was YES. [2023-08-27 03:30:15,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:30:15,744 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:30:15,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:30:15,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:30:15,745 INFO L85 PathProgramCache]: Analyzing trace with hash 341205115, now seen corresponding path program 1 times [2023-08-27 03:30:15,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:30:15,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121796275] [2023-08-27 03:30:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:30:15,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:30:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:30:15,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:30:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:30:15,857 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:30:15,857 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:30:15,857 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:30:15,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-27 03:30:15,858 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:30:15,858 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:30:15,858 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:30:15,858 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-08-27 03:30:16,059 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:30:16,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2174 places, 2377 transitions, 5711 flow [2023-08-27 03:30:18,641 INFO L124 PetriNetUnfolderBase]: 291/2723 cut-off events. [2023-08-27 03:30:18,641 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-08-27 03:30:18,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 2723 events. 291/2723 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 14666 event pairs, 0 based on Foata normal form. 0/2083 useless extension candidates. Maximal degree in co-relation 3108. Up to 60 conditions per place. [2023-08-27 03:30:18,892 INFO L82 GeneralOperation]: Start removeDead. Operand has 2174 places, 2377 transitions, 5711 flow [2023-08-27 03:30:18,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2174 places, 2377 transitions, 5711 flow [2023-08-27 03:30:18,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:30:18,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2174 places, 2377 transitions, 5711 flow [2023-08-27 03:30:18,944 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2174 places, 2377 transitions, 5711 flow [2023-08-27 03:30:18,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2174 places, 2377 transitions, 5711 flow [2023-08-27 03:30:21,250 INFO L124 PetriNetUnfolderBase]: 291/2723 cut-off events. [2023-08-27 03:30:21,250 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-08-27 03:30:21,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 2723 events. 291/2723 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 14666 event pairs, 0 based on Foata normal form. 0/2083 useless extension candidates. Maximal degree in co-relation 3108. Up to 60 conditions per place. [2023-08-27 03:30:22,669 INFO L119 LiptonReduction]: Number of co-enabled transitions 5322080 [2023-08-27 03:30:46,618 INFO L134 LiptonReduction]: Checked pairs total: 13991769 [2023-08-27 03:30:46,618 INFO L136 LiptonReduction]: Total number of compositions: 1933 [2023-08-27 03:30:46,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:30:46,620 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:30:46,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:30:47,069 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:30:47,070 INFO L124 PetriNetUnfolderBase]: 119/1093 cut-off events. [2023-08-27 03:30:47,070 INFO L125 PetriNetUnfolderBase]: For 4466/4466 co-relation queries the response was YES. [2023-08-27 03:30:47,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:30:47,070 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:30:47,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:30:47,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:30:47,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1204259052, now seen corresponding path program 1 times [2023-08-27 03:30:47,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:30:47,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74375022] [2023-08-27 03:30:47,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:30:47,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:30:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:30:47,121 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:30:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:30:47,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:30:47,191 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:30:47,191 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:30:47,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-27 03:30:47,191 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:30:47,192 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:30:47,192 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:30:47,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-08-27 03:30:47,397 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:30:47,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2248 places, 2458 transitions, 5936 flow [2023-08-27 03:30:50,034 INFO L124 PetriNetUnfolderBase]: 301/2816 cut-off events. [2023-08-27 03:30:50,034 INFO L125 PetriNetUnfolderBase]: For 4930/4930 co-relation queries the response was YES. [2023-08-27 03:30:50,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3372 conditions, 2816 events. 301/2816 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 15251 event pairs, 0 based on Foata normal form. 0/2154 useless extension candidates. Maximal degree in co-relation 3233. Up to 62 conditions per place. [2023-08-27 03:30:50,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 2248 places, 2458 transitions, 5936 flow [2023-08-27 03:30:50,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2248 places, 2458 transitions, 5936 flow [2023-08-27 03:30:50,387 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:30:50,387 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2248 places, 2458 transitions, 5936 flow [2023-08-27 03:30:50,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2248 places, 2458 transitions, 5936 flow [2023-08-27 03:30:50,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2248 places, 2458 transitions, 5936 flow [2023-08-27 03:30:53,086 INFO L124 PetriNetUnfolderBase]: 301/2816 cut-off events. [2023-08-27 03:30:53,086 INFO L125 PetriNetUnfolderBase]: For 4930/4930 co-relation queries the response was YES. [2023-08-27 03:30:53,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3372 conditions, 2816 events. 301/2816 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 15251 event pairs, 0 based on Foata normal form. 0/2154 useless extension candidates. Maximal degree in co-relation 3233. Up to 62 conditions per place. [2023-08-27 03:30:54,397 INFO L119 LiptonReduction]: Number of co-enabled transitions 5700000 [2023-08-27 03:31:20,022 INFO L134 LiptonReduction]: Checked pairs total: 13705989 [2023-08-27 03:31:20,022 INFO L136 LiptonReduction]: Total number of compositions: 1977 [2023-08-27 03:31:20,024 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:31:20,024 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:31:20,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:31:20,425 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:31:20,425 INFO L124 PetriNetUnfolderBase]: 127/1144 cut-off events. [2023-08-27 03:31:20,425 INFO L125 PetriNetUnfolderBase]: For 4930/4930 co-relation queries the response was YES. [2023-08-27 03:31:20,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:31:20,425 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:31:20,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:31:20,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:31:20,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1729792521, now seen corresponding path program 1 times [2023-08-27 03:31:20,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:31:20,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171090245] [2023-08-27 03:31:20,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:31:20,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:31:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:31:20,514 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:31:20,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:31:20,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:31:20,572 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:31:20,572 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:31:20,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-27 03:31:20,572 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:31:20,573 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:31:20,573 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:31:20,573 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-08-27 03:31:20,797 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:31:20,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2322 places, 2539 transitions, 6163 flow [2023-08-27 03:31:23,636 INFO L124 PetriNetUnfolderBase]: 311/2909 cut-off events. [2023-08-27 03:31:23,636 INFO L125 PetriNetUnfolderBase]: For 5425/5425 co-relation queries the response was YES. [2023-08-27 03:31:23,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3499 conditions, 2909 events. 311/2909 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 15713 event pairs, 0 based on Foata normal form. 0/2225 useless extension candidates. Maximal degree in co-relation 3359. Up to 64 conditions per place. [2023-08-27 03:31:23,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 2322 places, 2539 transitions, 6163 flow [2023-08-27 03:31:24,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2322 places, 2539 transitions, 6163 flow [2023-08-27 03:31:24,023 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:31:24,023 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2322 places, 2539 transitions, 6163 flow [2023-08-27 03:31:24,023 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2322 places, 2539 transitions, 6163 flow [2023-08-27 03:31:24,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2322 places, 2539 transitions, 6163 flow [2023-08-27 03:31:27,006 INFO L124 PetriNetUnfolderBase]: 311/2909 cut-off events. [2023-08-27 03:31:27,007 INFO L125 PetriNetUnfolderBase]: For 5425/5425 co-relation queries the response was YES. [2023-08-27 03:31:27,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3499 conditions, 2909 events. 311/2909 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 15713 event pairs, 0 based on Foata normal form. 0/2225 useless extension candidates. Maximal degree in co-relation 3359. Up to 64 conditions per place. [2023-08-27 03:31:28,408 INFO L119 LiptonReduction]: Number of co-enabled transitions 6090880 [2023-08-27 03:31:55,415 INFO L134 LiptonReduction]: Checked pairs total: 14546410 [2023-08-27 03:31:55,416 INFO L136 LiptonReduction]: Total number of compositions: 2047 [2023-08-27 03:31:55,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:31:55,417 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:31:55,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:31:55,849 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:31:55,850 INFO L124 PetriNetUnfolderBase]: 131/1188 cut-off events. [2023-08-27 03:31:55,850 INFO L125 PetriNetUnfolderBase]: For 5425/5425 co-relation queries the response was YES. [2023-08-27 03:31:55,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:31:55,850 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:31:55,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:31:55,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:31:55,850 INFO L85 PathProgramCache]: Analyzing trace with hash -964166245, now seen corresponding path program 1 times [2023-08-27 03:31:55,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:31:55,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078712159] [2023-08-27 03:31:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:31:55,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:31:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:31:55,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:31:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:31:55,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:31:55,972 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:31:55,972 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:31:55,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-27 03:31:55,973 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:31:55,973 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:31:55,973 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:31:55,973 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-08-27 03:31:56,258 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:31:56,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2396 places, 2620 transitions, 6392 flow [2023-08-27 03:31:59,212 INFO L124 PetriNetUnfolderBase]: 321/3002 cut-off events. [2023-08-27 03:31:59,212 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2023-08-27 03:31:59,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3627 conditions, 3002 events. 321/3002 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 16286 event pairs, 0 based on Foata normal form. 0/2296 useless extension candidates. Maximal degree in co-relation 3486. Up to 66 conditions per place. [2023-08-27 03:31:59,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 2396 places, 2620 transitions, 6392 flow [2023-08-27 03:31:59,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2396 places, 2620 transitions, 6392 flow [2023-08-27 03:31:59,612 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:31:59,612 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2396 places, 2620 transitions, 6392 flow [2023-08-27 03:31:59,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2396 places, 2620 transitions, 6392 flow [2023-08-27 03:31:59,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2396 places, 2620 transitions, 6392 flow [2023-08-27 03:32:02,663 INFO L124 PetriNetUnfolderBase]: 321/3002 cut-off events. [2023-08-27 03:32:02,664 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2023-08-27 03:32:02,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3627 conditions, 3002 events. 321/3002 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 16286 event pairs, 0 based on Foata normal form. 0/2296 useless extension candidates. Maximal degree in co-relation 3486. Up to 66 conditions per place. [2023-08-27 03:32:04,179 INFO L119 LiptonReduction]: Number of co-enabled transitions 6494720 [2023-08-27 03:32:34,095 INFO L134 LiptonReduction]: Checked pairs total: 17115097 [2023-08-27 03:32:34,095 INFO L136 LiptonReduction]: Total number of compositions: 2162 [2023-08-27 03:32:34,097 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:32:34,097 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:32:34,097 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:32:34,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:32:34,685 INFO L124 PetriNetUnfolderBase]: 133/1219 cut-off events. [2023-08-27 03:32:34,686 INFO L125 PetriNetUnfolderBase]: For 5952/5952 co-relation queries the response was YES. [2023-08-27 03:32:34,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:32:34,686 INFO L208 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:32:34,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:32:34,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:32:34,686 INFO L85 PathProgramCache]: Analyzing trace with hash -412894549, now seen corresponding path program 1 times [2023-08-27 03:32:34,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:32:34,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206863742] [2023-08-27 03:32:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:32:34,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:32:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:32:34,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:32:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:32:34,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:32:34,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:32:34,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:32:34,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-27 03:32:34,829 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:32:34,830 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:32:34,830 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:32:34,830 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-08-27 03:32:35,124 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:32:35,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2470 places, 2701 transitions, 6623 flow [2023-08-27 03:32:38,352 INFO L124 PetriNetUnfolderBase]: 331/3095 cut-off events. [2023-08-27 03:32:38,352 INFO L125 PetriNetUnfolderBase]: For 6512/6512 co-relation queries the response was YES. [2023-08-27 03:32:38,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3756 conditions, 3095 events. 331/3095 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 16787 event pairs, 0 based on Foata normal form. 0/2367 useless extension candidates. Maximal degree in co-relation 3614. Up to 68 conditions per place. [2023-08-27 03:32:38,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 2470 places, 2701 transitions, 6623 flow [2023-08-27 03:32:38,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2470 places, 2701 transitions, 6623 flow [2023-08-27 03:32:38,747 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:32:38,747 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2470 places, 2701 transitions, 6623 flow [2023-08-27 03:32:38,747 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2470 places, 2701 transitions, 6623 flow [2023-08-27 03:32:38,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2470 places, 2701 transitions, 6623 flow [2023-08-27 03:32:41,914 INFO L124 PetriNetUnfolderBase]: 331/3095 cut-off events. [2023-08-27 03:32:41,914 INFO L125 PetriNetUnfolderBase]: For 6512/6512 co-relation queries the response was YES. [2023-08-27 03:32:42,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3756 conditions, 3095 events. 331/3095 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 16787 event pairs, 0 based on Foata normal form. 0/2367 useless extension candidates. Maximal degree in co-relation 3614. Up to 68 conditions per place. [2023-08-27 03:32:43,782 INFO L119 LiptonReduction]: Number of co-enabled transitions 6911520 [2023-08-27 03:33:13,142 INFO L134 LiptonReduction]: Checked pairs total: 18232638 [2023-08-27 03:33:13,143 INFO L136 LiptonReduction]: Total number of compositions: 2211 [2023-08-27 03:33:13,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:33:13,144 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:33:13,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:33:13,628 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:33:13,628 INFO L124 PetriNetUnfolderBase]: 141/1264 cut-off events. [2023-08-27 03:33:13,628 INFO L125 PetriNetUnfolderBase]: For 6512/6512 co-relation queries the response was YES. [2023-08-27 03:33:13,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:33:13,629 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:33:13,629 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:33:13,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:33:13,629 INFO L85 PathProgramCache]: Analyzing trace with hash -825015903, now seen corresponding path program 1 times [2023-08-27 03:33:13,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:33:13,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864779360] [2023-08-27 03:33:13,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:33:13,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:33:13,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:33:13,689 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:33:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:33:13,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:33:13,763 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:33:13,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:33:13,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-27 03:33:13,764 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:33:13,764 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:33:13,764 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:33:13,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-08-27 03:33:14,141 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:33:14,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2544 places, 2782 transitions, 6856 flow [2023-08-27 03:33:17,199 INFO L124 PetriNetUnfolderBase]: 341/3188 cut-off events. [2023-08-27 03:33:17,199 INFO L125 PetriNetUnfolderBase]: For 7106/7106 co-relation queries the response was YES. [2023-08-27 03:33:17,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3886 conditions, 3188 events. 341/3188 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 17375 event pairs, 0 based on Foata normal form. 0/2438 useless extension candidates. Maximal degree in co-relation 3743. Up to 70 conditions per place. [2023-08-27 03:33:17,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 2544 places, 2782 transitions, 6856 flow [2023-08-27 03:33:17,668 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2544 places, 2782 transitions, 6856 flow [2023-08-27 03:33:17,669 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:33:17,669 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2544 places, 2782 transitions, 6856 flow [2023-08-27 03:33:17,669 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2544 places, 2782 transitions, 6856 flow [2023-08-27 03:33:17,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2544 places, 2782 transitions, 6856 flow [2023-08-27 03:33:20,874 INFO L124 PetriNetUnfolderBase]: 341/3188 cut-off events. [2023-08-27 03:33:20,874 INFO L125 PetriNetUnfolderBase]: For 7106/7106 co-relation queries the response was YES. [2023-08-27 03:33:21,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3886 conditions, 3188 events. 341/3188 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 17375 event pairs, 0 based on Foata normal form. 0/2438 useless extension candidates. Maximal degree in co-relation 3743. Up to 70 conditions per place. [2023-08-27 03:33:22,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 7341280 [2023-08-27 03:33:54,345 INFO L134 LiptonReduction]: Checked pairs total: 19390292 [2023-08-27 03:33:54,346 INFO L136 LiptonReduction]: Total number of compositions: 2262 [2023-08-27 03:33:54,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:33:54,348 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:33:54,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:33:54,952 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:33:54,952 INFO L124 PetriNetUnfolderBase]: 139/1295 cut-off events. [2023-08-27 03:33:54,952 INFO L125 PetriNetUnfolderBase]: For 7106/7106 co-relation queries the response was YES. [2023-08-27 03:33:54,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:33:54,952 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:33:54,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:33:54,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:33:54,953 INFO L85 PathProgramCache]: Analyzing trace with hash 589604886, now seen corresponding path program 1 times [2023-08-27 03:33:54,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:33:54,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655600188] [2023-08-27 03:33:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:33:54,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:33:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:33:55,038 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:33:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:33:55,122 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:33:55,122 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:33:55,122 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:33:55,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-27 03:33:55,122 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:33:55,123 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:33:55,123 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:33:55,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-08-27 03:33:55,406 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:33:55,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2618 places, 2863 transitions, 7091 flow [2023-08-27 03:33:58,884 INFO L124 PetriNetUnfolderBase]: 351/3281 cut-off events. [2023-08-27 03:33:58,884 INFO L125 PetriNetUnfolderBase]: For 7735/7735 co-relation queries the response was YES. [2023-08-27 03:33:59,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4017 conditions, 3281 events. 351/3281 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 17873 event pairs, 0 based on Foata normal form. 0/2509 useless extension candidates. Maximal degree in co-relation 3873. Up to 72 conditions per place. [2023-08-27 03:33:59,262 INFO L82 GeneralOperation]: Start removeDead. Operand has 2618 places, 2863 transitions, 7091 flow [2023-08-27 03:33:59,333 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2618 places, 2863 transitions, 7091 flow [2023-08-27 03:33:59,334 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:33:59,334 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2618 places, 2863 transitions, 7091 flow [2023-08-27 03:33:59,334 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2618 places, 2863 transitions, 7091 flow [2023-08-27 03:33:59,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2618 places, 2863 transitions, 7091 flow [2023-08-27 03:34:02,798 INFO L124 PetriNetUnfolderBase]: 351/3281 cut-off events. [2023-08-27 03:34:02,798 INFO L125 PetriNetUnfolderBase]: For 7735/7735 co-relation queries the response was YES. [2023-08-27 03:34:03,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4017 conditions, 3281 events. 351/3281 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 17873 event pairs, 0 based on Foata normal form. 0/2509 useless extension candidates. Maximal degree in co-relation 3873. Up to 72 conditions per place. [2023-08-27 03:34:04,520 INFO L119 LiptonReduction]: Number of co-enabled transitions 7784000 [2023-08-27 03:34:37,838 INFO L134 LiptonReduction]: Checked pairs total: 20782718 [2023-08-27 03:34:37,838 INFO L136 LiptonReduction]: Total number of compositions: 2335 [2023-08-27 03:34:37,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-27 03:34:37,840 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;@ceb8490, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:34:37,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-27 03:34:38,339 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:34:38,339 INFO L124 PetriNetUnfolderBase]: 145/1328 cut-off events. [2023-08-27 03:34:38,339 INFO L125 PetriNetUnfolderBase]: For 7735/7735 co-relation queries the response was YES. [2023-08-27 03:34:38,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:34:38,339 INFO L208 CegarLoopForPetriNet]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:34:38,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-27 03:34:38,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:34:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash -279302132, now seen corresponding path program 1 times [2023-08-27 03:34:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:34:38,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789576776] [2023-08-27 03:34:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:34:38,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:34:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:34:38,409 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 03:34:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 03:34:38,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 03:34:38,552 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 03:34:38,552 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-27 03:34:38,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-27 03:34:38,553 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-27 03:34:38,553 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-27 03:34:38,553 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-27 03:34:38,553 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-08-27 03:34:38,820 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:34:38,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2692 places, 2944 transitions, 7328 flow [2023-08-27 03:34:42,413 INFO L124 PetriNetUnfolderBase]: 361/3374 cut-off events. [2023-08-27 03:34:42,413 INFO L125 PetriNetUnfolderBase]: For 8400/8400 co-relation queries the response was YES. [2023-08-27 03:34:42,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4149 conditions, 3374 events. 361/3374 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 18371 event pairs, 0 based on Foata normal form. 0/2580 useless extension candidates. Maximal degree in co-relation 4004. Up to 74 conditions per place. [2023-08-27 03:34:42,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 2692 places, 2944 transitions, 7328 flow [2023-08-27 03:34:42,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2692 places, 2944 transitions, 7328 flow [2023-08-27 03:34:42,879 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:34:42,879 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2692 places, 2944 transitions, 7328 flow [2023-08-27 03:34:42,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2692 places, 2944 transitions, 7328 flow [2023-08-27 03:34:42,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2692 places, 2944 transitions, 7328 flow [2023-08-27 03:34:46,567 INFO L124 PetriNetUnfolderBase]: 361/3374 cut-off events. [2023-08-27 03:34:46,567 INFO L125 PetriNetUnfolderBase]: For 8400/8400 co-relation queries the response was YES. [2023-08-27 03:34:46,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4149 conditions, 3374 events. 361/3374 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 18371 event pairs, 0 based on Foata normal form. 0/2580 useless extension candidates. Maximal degree in co-relation 4004. Up to 74 conditions per place. [2023-08-27 03:34:48,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 8239680