/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.pointer.base.address.is.valid.at.dereference ASSERTandASSUME --cacsl2boogietranslator.pointer.to.allocated.memory.at.dereference ASSERTandASSUME --cacsl2boogietranslator.check.array.bounds.for.arrays.that.are.off.heap ASSERTandASSUME --cacsl2boogietranslator.check.if.freed.pointer.was.valid true --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:57:36,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:57:37,029 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 [2023-08-26 15:57:37,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:57:37,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:57:37,073 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:57:37,074 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:57:37,074 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:57:37,075 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:57:37,078 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:57:37,078 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:57:37,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:57:37,079 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:57:37,080 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:57:37,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:57:37,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:57:37,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:57:37,081 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:57:37,081 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:57:37,081 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:57:37,081 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:57:37,082 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:57:37,083 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:57:37,083 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:57:37,083 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:57:37,084 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:57:37,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:57:37,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:57:37,084 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:57:37,084 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:57:37,085 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:57:37,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:57:37,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:57:37,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:57:37,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:57:37,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:57:37,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:57:37,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:57:37,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:57:37,429 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:57:37,429 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:57:37,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-26 15:57:38,591 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:57:38,893 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:57:38,894 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-26 15:57:38,914 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61ed79ed/784ea858f8d5463e925eb53ee2af34d0/FLAGf0bad7ecc [2023-08-26 15:57:38,925 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a61ed79ed/784ea858f8d5463e925eb53ee2af34d0 [2023-08-26 15:57:38,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:57:38,929 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:57:38,930 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:57:38,930 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:57:38,933 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:57:38,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:57:38" (1/1) ... [2023-08-26 15:57:38,934 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50642d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:38, skipping insertion in model container [2023-08-26 15:57:38,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:57:38" (1/1) ... [2023-08-26 15:57:38,973 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:57:39,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:57:39,319 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:57:39,338 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:57:39,340 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:57:39,362 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:57:39,406 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:57:39,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39 WrapperNode [2023-08-26 15:57:39,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:57:39,408 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:57:39,408 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:57:39,408 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:57:39,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,467 INFO L138 Inliner]: procedures = 170, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 101 [2023-08-26 15:57:39,468 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:57:39,469 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:57:39,469 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:57:39,469 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:57:39,477 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,491 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,491 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,500 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,517 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:57:39,521 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:57:39,521 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:57:39,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:57:39,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (1/1) ... [2023-08-26 15:57:39,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:57:39,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:57:39,549 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) [2023-08-26 15:57:39,560 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 [2023-08-26 15:57:39,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:57:39,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:57:39,587 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:57:39,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:57:39,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:57:39,588 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 15:57:39,588 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 15:57:39,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:57:39,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:57:39,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:57:39,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:57:39,590 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 15:57:39,736 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:57:39,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:57:39,998 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:57:40,007 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:57:40,007 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-26 15:57:40,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:57:40 BoogieIcfgContainer [2023-08-26 15:57:40,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:57:40,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:57:40,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:57:40,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:57:40,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:57:38" (1/3) ... [2023-08-26 15:57:40,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df293a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:57:40, skipping insertion in model container [2023-08-26 15:57:40,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:57:39" (2/3) ... [2023-08-26 15:57:40,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6df293a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:57:40, skipping insertion in model container [2023-08-26 15:57:40,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:57:40" (3/3) ... [2023-08-26 15:57:40,018 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-08-26 15:57:40,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:57:40,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 15:57:40,034 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:57:40,092 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 15:57:40,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 134 transitions, 276 flow [2023-08-26 15:57:40,189 INFO L124 PetriNetUnfolderBase]: 32/199 cut-off events. [2023-08-26 15:57:40,189 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:57:40,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 199 events. 32/199 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 634 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 101. Up to 6 conditions per place. [2023-08-26 15:57:40,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 134 transitions, 276 flow [2023-08-26 15:57:40,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 129 transitions, 263 flow [2023-08-26 15:57:40,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:57:40,212 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 129 transitions, 263 flow [2023-08-26 15:57:40,214 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 129 transitions, 263 flow [2023-08-26 15:57:40,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 129 transitions, 263 flow [2023-08-26 15:57:40,253 INFO L124 PetriNetUnfolderBase]: 31/194 cut-off events. [2023-08-26 15:57:40,254 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:57:40,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 194 events. 31/194 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 615 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 101. Up to 6 conditions per place. [2023-08-26 15:57:40,258 INFO L119 LiptonReduction]: Number of co-enabled transitions 4402 [2023-08-26 15:57:42,713 INFO L134 LiptonReduction]: Checked pairs total: 12625 [2023-08-26 15:57:42,714 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-26 15:57:42,725 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:57:42,731 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:57:42,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:57:42,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:57:42,737 INFO L124 PetriNetUnfolderBase]: 7/40 cut-off events. [2023-08-26 15:57:42,737 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:57:42,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:57:42,738 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 15:57:42,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:57:42,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:57:42,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2116538091, now seen corresponding path program 1 times [2023-08-26 15:57:42,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:57:42,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465602943] [2023-08-26 15:57:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:57:42,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:57:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:42,854 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:57:42,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:42,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:57:42,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:57:42,902 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:57:42,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:57:42,904 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:57:42,906 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:57:42,907 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:57:42,907 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 15:57:42,941 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 15:57:42,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 167 transitions, 352 flow [2023-08-26 15:57:42,998 INFO L124 PetriNetUnfolderBase]: 54/324 cut-off events. [2023-08-26 15:57:42,998 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:57:43,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 324 events. 54/324 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1165 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 201. Up to 9 conditions per place. [2023-08-26 15:57:43,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 167 transitions, 352 flow [2023-08-26 15:57:43,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 167 transitions, 352 flow [2023-08-26 15:57:43,004 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:57:43,004 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 144 places, 167 transitions, 352 flow [2023-08-26 15:57:43,004 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 144 places, 167 transitions, 352 flow [2023-08-26 15:57:43,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 167 transitions, 352 flow [2023-08-26 15:57:43,034 INFO L124 PetriNetUnfolderBase]: 54/324 cut-off events. [2023-08-26 15:57:43,035 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:57:43,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 324 events. 54/324 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1165 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 201. Up to 9 conditions per place. [2023-08-26 15:57:43,044 INFO L119 LiptonReduction]: Number of co-enabled transitions 11408 [2023-08-26 15:57:45,405 INFO L134 LiptonReduction]: Checked pairs total: 34500 [2023-08-26 15:57:45,405 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-26 15:57:45,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:57:45,408 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:57:45,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:57:45,418 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:57:45,419 INFO L124 PetriNetUnfolderBase]: 22/99 cut-off events. [2023-08-26 15:57:45,419 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 15:57:45,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:57:45,420 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 15:57:45,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:57:45,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:57:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1349143542, now seen corresponding path program 1 times [2023-08-26 15:57:45,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:57:45,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68604724] [2023-08-26 15:57:45,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:57:45,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:57:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:45,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:57:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:45,528 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:57:45,529 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:57:45,529 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:57:45,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:57:45,529 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:57:45,530 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:57:45,530 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:57:45,530 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 15:57:45,553 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 15:57:45,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 200 transitions, 430 flow [2023-08-26 15:57:45,605 INFO L124 PetriNetUnfolderBase]: 81/486 cut-off events. [2023-08-26 15:57:45,605 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:57:45,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 486 events. 81/486 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1895 event pairs, 1 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 332. Up to 16 conditions per place. [2023-08-26 15:57:45,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 200 transitions, 430 flow [2023-08-26 15:57:45,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 200 transitions, 430 flow [2023-08-26 15:57:45,614 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:57:45,615 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 171 places, 200 transitions, 430 flow [2023-08-26 15:57:45,616 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 171 places, 200 transitions, 430 flow [2023-08-26 15:57:45,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 200 transitions, 430 flow [2023-08-26 15:57:45,663 INFO L124 PetriNetUnfolderBase]: 81/486 cut-off events. [2023-08-26 15:57:45,663 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:57:45,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 486 events. 81/486 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1895 event pairs, 1 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 332. Up to 16 conditions per place. [2023-08-26 15:57:45,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 20274 [2023-08-26 15:57:48,142 INFO L134 LiptonReduction]: Checked pairs total: 66884 [2023-08-26 15:57:48,142 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-26 15:57:48,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:57:48,145 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:57:48,145 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:57:48,156 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:57:48,156 INFO L124 PetriNetUnfolderBase]: 39/159 cut-off events. [2023-08-26 15:57:48,156 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 15:57:48,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:57:48,156 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 15:57:48,157 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:57:48,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:57:48,157 INFO L85 PathProgramCache]: Analyzing trace with hash -58824892, now seen corresponding path program 1 times [2023-08-26 15:57:48,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:57:48,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496847764] [2023-08-26 15:57:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:57:48,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:57:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:48,181 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:57:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:48,201 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:57:48,201 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:57:48,202 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:57:48,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:57:48,202 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:57:48,203 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:57:48,203 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:57:48,203 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 15:57:48,226 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 15:57:48,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 233 transitions, 510 flow [2023-08-26 15:57:48,349 INFO L124 PetriNetUnfolderBase]: 120/724 cut-off events. [2023-08-26 15:57:48,350 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:57:48,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 724 events. 120/724 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3210 event pairs, 6 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 506. Up to 32 conditions per place. [2023-08-26 15:57:48,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 233 transitions, 510 flow [2023-08-26 15:57:48,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 233 transitions, 510 flow [2023-08-26 15:57:48,369 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:57:48,369 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 233 transitions, 510 flow [2023-08-26 15:57:48,369 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 233 transitions, 510 flow [2023-08-26 15:57:48,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 233 transitions, 510 flow [2023-08-26 15:57:48,455 INFO L124 PetriNetUnfolderBase]: 120/724 cut-off events. [2023-08-26 15:57:48,455 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:57:48,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 724 events. 120/724 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3210 event pairs, 6 based on Foata normal form. 0/557 useless extension candidates. Maximal degree in co-relation 506. Up to 32 conditions per place. [2023-08-26 15:57:48,482 INFO L119 LiptonReduction]: Number of co-enabled transitions 31248 [2023-08-26 15:57:50,965 INFO L134 LiptonReduction]: Checked pairs total: 109937 [2023-08-26 15:57:50,965 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-26 15:57:50,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:57:50,967 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:57:50,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:57:50,984 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:57:50,984 INFO L124 PetriNetUnfolderBase]: 62/231 cut-off events. [2023-08-26 15:57:50,984 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-26 15:57:50,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:57:50,984 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-26 15:57:50,985 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:57:50,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:57:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash 428243843, now seen corresponding path program 1 times [2023-08-26 15:57:50,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:57:50,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512812489] [2023-08-26 15:57:50,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:57:50,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:57:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:51,025 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:57:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:51,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:57:51,075 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:57:51,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:57:51,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:57:51,075 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:57:51,076 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:57:51,076 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:57:51,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-26 15:57:51,107 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-26 15:57:51,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 266 transitions, 592 flow [2023-08-26 15:57:51,270 INFO L124 PetriNetUnfolderBase]: 187/1118 cut-off events. [2023-08-26 15:57:51,270 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:57:51,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 1118 events. 187/1118 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5601 event pairs, 23 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 769. Up to 80 conditions per place. [2023-08-26 15:57:51,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 266 transitions, 592 flow [2023-08-26 15:57:51,291 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 266 transitions, 592 flow [2023-08-26 15:57:51,291 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:57:51,291 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 266 transitions, 592 flow [2023-08-26 15:57:51,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 266 transitions, 592 flow [2023-08-26 15:57:51,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 266 transitions, 592 flow [2023-08-26 15:57:51,425 INFO L124 PetriNetUnfolderBase]: 187/1118 cut-off events. [2023-08-26 15:57:51,425 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:57:51,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 1118 events. 187/1118 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5601 event pairs, 23 based on Foata normal form. 0/865 useless extension candidates. Maximal degree in co-relation 769. Up to 80 conditions per place. [2023-08-26 15:57:51,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 44330 [2023-08-26 15:57:54,071 INFO L134 LiptonReduction]: Checked pairs total: 156898 [2023-08-26 15:57:54,071 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-08-26 15:57:54,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:57:54,073 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:57:54,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:57:54,094 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:57:54,094 INFO L124 PetriNetUnfolderBase]: 78/299 cut-off events. [2023-08-26 15:57:54,094 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-26 15:57:54,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:57:54,095 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:57:54,095 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:57:54,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:57:54,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1535242146, now seen corresponding path program 1 times [2023-08-26 15:57:54,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:57:54,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29472895] [2023-08-26 15:57:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:57:54,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:57:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:54,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:57:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:54,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:57:54,167 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:57:54,167 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:57:54,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:57:54,167 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:57:54,168 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:57:54,168 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:57:54,168 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-26 15:57:54,195 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-26 15:57:54,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 299 transitions, 676 flow [2023-08-26 15:57:54,481 INFO L124 PetriNetUnfolderBase]: 318/1832 cut-off events. [2023-08-26 15:57:54,481 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:57:54,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 1832 events. 318/1832 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10950 event pairs, 72 based on Foata normal form. 0/1429 useless extension candidates. Maximal degree in co-relation 1217. Up to 192 conditions per place. [2023-08-26 15:57:54,512 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 299 transitions, 676 flow [2023-08-26 15:57:54,532 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 299 transitions, 676 flow [2023-08-26 15:57:54,532 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:57:54,532 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 299 transitions, 676 flow [2023-08-26 15:57:54,532 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 299 transitions, 676 flow [2023-08-26 15:57:54,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 299 transitions, 676 flow [2023-08-26 15:57:54,798 INFO L124 PetriNetUnfolderBase]: 318/1832 cut-off events. [2023-08-26 15:57:54,798 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:57:54,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 1832 events. 318/1832 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10950 event pairs, 72 based on Foata normal form. 0/1429 useless extension candidates. Maximal degree in co-relation 1217. Up to 192 conditions per place. [2023-08-26 15:57:54,908 INFO L119 LiptonReduction]: Number of co-enabled transitions 59520 [2023-08-26 15:57:57,591 INFO L134 LiptonReduction]: Checked pairs total: 214570 [2023-08-26 15:57:57,591 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-08-26 15:57:57,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:57:57,593 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:57:57,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:57:57,623 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:57:57,623 INFO L124 PetriNetUnfolderBase]: 98/378 cut-off events. [2023-08-26 15:57:57,623 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-08-26 15:57:57,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:57:57,623 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:57:57,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:57:57,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:57:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash -576453554, now seen corresponding path program 1 times [2023-08-26 15:57:57,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:57:57,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579025609] [2023-08-26 15:57:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:57:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:57:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:57,659 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:57:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:57,695 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:57:57,698 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:57:57,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:57:57,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:57:57,699 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:57:57,700 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:57:57,700 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:57:57,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-26 15:57:57,734 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-26 15:57:57,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 332 transitions, 762 flow [2023-08-26 15:57:58,291 INFO L124 PetriNetUnfolderBase]: 593/3202 cut-off events. [2023-08-26 15:57:58,292 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:57:58,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 3202 events. 593/3202 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 22812 event pairs, 201 based on Foata normal form. 0/2521 useless extension candidates. Maximal degree in co-relation 2050. Up to 448 conditions per place. [2023-08-26 15:57:58,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 332 transitions, 762 flow [2023-08-26 15:57:58,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 332 transitions, 762 flow [2023-08-26 15:57:58,388 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:57:58,388 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 332 transitions, 762 flow [2023-08-26 15:57:58,388 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 332 transitions, 762 flow [2023-08-26 15:57:58,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 332 transitions, 762 flow [2023-08-26 15:57:58,921 INFO L124 PetriNetUnfolderBase]: 593/3202 cut-off events. [2023-08-26 15:57:58,921 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:57:58,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 3202 events. 593/3202 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 22812 event pairs, 201 based on Foata normal form. 0/2521 useless extension candidates. Maximal degree in co-relation 2050. Up to 448 conditions per place. [2023-08-26 15:57:59,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 76818 [2023-08-26 15:58:01,806 INFO L134 LiptonReduction]: Checked pairs total: 286584 [2023-08-26 15:58:01,807 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-08-26 15:58:01,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:58:01,808 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:58:01,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:58:01,842 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:58:01,842 INFO L124 PetriNetUnfolderBase]: 129/492 cut-off events. [2023-08-26 15:58:01,842 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-08-26 15:58:01,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:58:01,843 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:58:01,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:58:01,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:58:01,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1926025069, now seen corresponding path program 1 times [2023-08-26 15:58:01,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:58:01,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822374883] [2023-08-26 15:58:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:58:01,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:58:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:58:01,865 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:58:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:58:01,884 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:58:01,885 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:58:01,885 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:58:01,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:58:01,885 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:58:01,885 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:58:01,886 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:58:01,886 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-26 15:58:01,910 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-26 15:58:01,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 365 transitions, 850 flow [2023-08-26 15:58:03,023 INFO L124 PetriNetUnfolderBase]: 1188/5916 cut-off events. [2023-08-26 15:58:03,023 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:58:03,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 5916 events. 1188/5916 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49664 event pairs, 522 based on Foata normal form. 0/4701 useless extension candidates. Maximal degree in co-relation 3684. Up to 1024 conditions per place. [2023-08-26 15:58:03,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 365 transitions, 850 flow [2023-08-26 15:58:03,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 365 transitions, 850 flow [2023-08-26 15:58:03,146 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:58:03,146 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 365 transitions, 850 flow [2023-08-26 15:58:03,146 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 365 transitions, 850 flow [2023-08-26 15:58:03,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 365 transitions, 850 flow [2023-08-26 15:58:04,142 INFO L124 PetriNetUnfolderBase]: 1188/5916 cut-off events. [2023-08-26 15:58:04,142 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:58:04,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 5916 events. 1188/5916 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49664 event pairs, 522 based on Foata normal form. 0/4701 useless extension candidates. Maximal degree in co-relation 3684. Up to 1024 conditions per place. [2023-08-26 15:58:04,387 INFO L119 LiptonReduction]: Number of co-enabled transitions 96224 [2023-08-26 15:58:07,390 INFO L134 LiptonReduction]: Checked pairs total: 360818 [2023-08-26 15:58:07,391 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-08-26 15:58:07,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:58:07,392 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:58:07,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:58:07,475 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:58:07,475 INFO L124 PetriNetUnfolderBase]: 162/619 cut-off events. [2023-08-26 15:58:07,476 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2023-08-26 15:58:07,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:58:07,476 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:58:07,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:58:07,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:58:07,476 INFO L85 PathProgramCache]: Analyzing trace with hash -397843028, now seen corresponding path program 1 times [2023-08-26 15:58:07,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:58:07,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822710995] [2023-08-26 15:58:07,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:58:07,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:58:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:58:07,497 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:58:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:58:07,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:58:07,516 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:58:07,516 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:58:07,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:58:07,516 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:58:07,517 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:58:07,517 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:58:07,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-26 15:58:07,543 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 15:58:07,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 398 transitions, 940 flow [2023-08-26 15:58:09,669 INFO L124 PetriNetUnfolderBase]: 2487/11382 cut-off events. [2023-08-26 15:58:09,669 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:58:09,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13759 conditions, 11382 events. 2487/11382 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 112131 event pairs, 1291 based on Foata normal form. 0/9121 useless extension candidates. Maximal degree in co-relation 6983. Up to 2304 conditions per place. [2023-08-26 15:58:09,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 398 transitions, 940 flow [2023-08-26 15:58:09,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 333 places, 398 transitions, 940 flow [2023-08-26 15:58:09,875 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:58:09,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 333 places, 398 transitions, 940 flow [2023-08-26 15:58:09,876 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 333 places, 398 transitions, 940 flow [2023-08-26 15:58:09,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 398 transitions, 940 flow [2023-08-26 15:58:12,012 INFO L124 PetriNetUnfolderBase]: 2487/11382 cut-off events. [2023-08-26 15:58:12,013 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:58:12,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13759 conditions, 11382 events. 2487/11382 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 112131 event pairs, 1291 based on Foata normal form. 0/9121 useless extension candidates. Maximal degree in co-relation 6983. Up to 2304 conditions per place. [2023-08-26 15:58:12,496 INFO L119 LiptonReduction]: Number of co-enabled transitions 117738 [2023-08-26 15:58:15,448 INFO L134 LiptonReduction]: Checked pairs total: 451046 [2023-08-26 15:58:15,448 INFO L136 LiptonReduction]: Total number of compositions: 233 [2023-08-26 15:58:15,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:58:15,450 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:58:15,450 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:58:15,518 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:58:15,518 INFO L124 PetriNetUnfolderBase]: 209/793 cut-off events. [2023-08-26 15:58:15,518 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-08-26 15:58:15,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:58:15,518 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:58:15,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:58:15,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:58:15,519 INFO L85 PathProgramCache]: Analyzing trace with hash 724619458, now seen corresponding path program 1 times [2023-08-26 15:58:15,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:58:15,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103632177] [2023-08-26 15:58:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:58:15,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:58:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:58:15,540 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:58:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:58:15,560 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:58:15,560 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:58:15,560 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:58:15,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:58:15,561 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:58:15,561 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:58:15,561 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:58:15,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-26 15:58:15,591 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-26 15:58:15,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 431 transitions, 1032 flow [2023-08-26 15:58:20,368 INFO L124 PetriNetUnfolderBase]: 5322/22480 cut-off events. [2023-08-26 15:58:20,369 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:58:20,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27686 conditions, 22480 events. 5322/22480 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 249428 event pairs, 3084 based on Foata normal form. 0/18149 useless extension candidates. Maximal degree in co-relation 13739. Up to 5120 conditions per place. [2023-08-26 15:58:20,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 360 places, 431 transitions, 1032 flow [2023-08-26 15:58:20,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 360 places, 431 transitions, 1032 flow [2023-08-26 15:58:20,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:58:20,871 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 360 places, 431 transitions, 1032 flow [2023-08-26 15:58:20,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 360 places, 431 transitions, 1032 flow [2023-08-26 15:58:20,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 360 places, 431 transitions, 1032 flow [2023-08-26 15:58:25,570 INFO L124 PetriNetUnfolderBase]: 5322/22480 cut-off events. [2023-08-26 15:58:25,570 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:58:25,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27686 conditions, 22480 events. 5322/22480 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 249428 event pairs, 3084 based on Foata normal form. 0/18149 useless extension candidates. Maximal degree in co-relation 13739. Up to 5120 conditions per place. [2023-08-26 15:58:26,945 INFO L119 LiptonReduction]: Number of co-enabled transitions 141360 [2023-08-26 15:58:30,066 INFO L134 LiptonReduction]: Checked pairs total: 543801 [2023-08-26 15:58:30,066 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-08-26 15:58:30,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:58:30,068 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:58:30,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:58:30,150 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:58:30,150 INFO L124 PetriNetUnfolderBase]: 265/1002 cut-off events. [2023-08-26 15:58:30,150 INFO L125 PetriNetUnfolderBase]: For 408/408 co-relation queries the response was YES. [2023-08-26 15:58:30,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:58:30,150 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:58:30,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:58:30,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:58:30,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1276353665, now seen corresponding path program 1 times [2023-08-26 15:58:30,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:58:30,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501043495] [2023-08-26 15:58:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:58:30,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:58:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:58:30,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:58:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:58:30,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:58:30,225 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:58:30,225 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:58:30,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 15:58:30,225 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:58:30,226 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:58:30,226 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:58:30,226 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-26 15:58:30,256 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-26 15:58:30,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 464 transitions, 1126 flow [2023-08-26 15:58:40,488 INFO L124 PetriNetUnfolderBase]: 11485/45098 cut-off events. [2023-08-26 15:58:40,489 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:58:41,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56462 conditions, 45098 events. 11485/45098 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 555152 event pairs, 7181 based on Foata normal form. 0/36649 useless extension candidates. Maximal degree in co-relation 27665. Up to 11264 conditions per place. [2023-08-26 15:58:41,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 387 places, 464 transitions, 1126 flow [2023-08-26 15:58:42,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 387 places, 464 transitions, 1126 flow [2023-08-26 15:58:42,391 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:58:42,391 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 387 places, 464 transitions, 1126 flow [2023-08-26 15:58:42,392 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 387 places, 464 transitions, 1126 flow [2023-08-26 15:58:42,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 464 transitions, 1126 flow [2023-08-26 15:58:52,713 INFO L124 PetriNetUnfolderBase]: 11485/45098 cut-off events. [2023-08-26 15:58:52,713 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:58:53,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56462 conditions, 45098 events. 11485/45098 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 555152 event pairs, 7181 based on Foata normal form. 0/36649 useless extension candidates. Maximal degree in co-relation 27665. Up to 11264 conditions per place. [2023-08-26 15:58:55,682 INFO L119 LiptonReduction]: Number of co-enabled transitions 167090 [2023-08-26 15:58:58,951 INFO L134 LiptonReduction]: Checked pairs total: 653797 [2023-08-26 15:58:58,951 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-08-26 15:58:58,952 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:58:58,953 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:58:58,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:58:59,111 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:58:59,111 INFO L124 PetriNetUnfolderBase]: 371/1341 cut-off events. [2023-08-26 15:58:59,111 INFO L125 PetriNetUnfolderBase]: For 614/614 co-relation queries the response was YES. [2023-08-26 15:58:59,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:58:59,112 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:58:59,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:58:59,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:58:59,112 INFO L85 PathProgramCache]: Analyzing trace with hash -441129747, now seen corresponding path program 1 times [2023-08-26 15:58:59,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:58:59,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093708620] [2023-08-26 15:58:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:58:59,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:58:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:58:59,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:58:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:58:59,161 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:58:59,161 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:58:59,162 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:58:59,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 15:58:59,162 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:58:59,162 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:58:59,162 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:58:59,162 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-26 15:58:59,194 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-26 15:58:59,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 497 transitions, 1222 flow [2023-08-26 15:59:23,238 INFO L124 PetriNetUnfolderBase]: 24816/91268 cut-off events. [2023-08-26 15:59:23,238 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:59:26,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115959 conditions, 91268 events. 24816/91268 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 1231948 event pairs, 16398 based on Foata normal form. 0/74605 useless extension candidates. Maximal degree in co-relation 56441. Up to 24576 conditions per place. [2023-08-26 15:59:26,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 414 places, 497 transitions, 1222 flow [2023-08-26 15:59:28,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 414 places, 497 transitions, 1222 flow [2023-08-26 15:59:28,350 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:59:28,350 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 497 transitions, 1222 flow [2023-08-26 15:59:28,350 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 497 transitions, 1222 flow [2023-08-26 15:59:28,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 497 transitions, 1222 flow [2023-08-26 15:59:53,696 INFO L124 PetriNetUnfolderBase]: 24816/91268 cut-off events. [2023-08-26 15:59:53,696 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:59:57,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115959 conditions, 91268 events. 24816/91268 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 1231948 event pairs, 16398 based on Foata normal form. 0/74605 useless extension candidates. Maximal degree in co-relation 56441. Up to 24576 conditions per place. [2023-08-26 16:00:06,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 194928 [2023-08-26 16:00:09,739 INFO L134 LiptonReduction]: Checked pairs total: 758907 [2023-08-26 16:00:09,740 INFO L136 LiptonReduction]: Total number of compositions: 281 [2023-08-26 16:00:09,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 16:00:09,741 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 16:00:09,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 16:00:09,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 16:00:09,918 INFO L124 PetriNetUnfolderBase]: 526/1815 cut-off events. [2023-08-26 16:00:09,918 INFO L125 PetriNetUnfolderBase]: For 909/909 co-relation queries the response was YES. [2023-08-26 16:00:09,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:00:09,918 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:00:09,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 16:00:09,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:00:09,918 INFO L85 PathProgramCache]: Analyzing trace with hash -189651599, now seen corresponding path program 1 times [2023-08-26 16:00:09,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:00:09,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121669941] [2023-08-26 16:00:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:00:09,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:00:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 16:00:09,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 16:00:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 16:00:09,969 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 16:00:09,969 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 16:00:09,969 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 16:00:09,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 16:00:09,970 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 16:00:09,970 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 16:00:09,970 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 16:00:09,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-26 16:00:10,005 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-26 16:00:10,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 530 transitions, 1320 flow [2023-08-26 16:01:10,019 INFO L124 PetriNetUnfolderBase]: 53507/185566 cut-off events. [2023-08-26 16:01:10,019 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 16:01:19,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238945 conditions, 185566 events. 53507/185566 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 2729885 event pairs, 36879 based on Foata normal form. 0/152497 useless extension candidates. Maximal degree in co-relation 115938. Up to 53248 conditions per place. [2023-08-26 16:01:19,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 441 places, 530 transitions, 1320 flow [2023-08-26 16:01:24,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 441 places, 530 transitions, 1320 flow [2023-08-26 16:01:24,037 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 16:01:24,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 441 places, 530 transitions, 1320 flow [2023-08-26 16:01:24,038 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 441 places, 530 transitions, 1320 flow [2023-08-26 16:01:24,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 530 transitions, 1320 flow [2023-08-26 16:02:19,277 INFO L124 PetriNetUnfolderBase]: 53507/185566 cut-off events. [2023-08-26 16:02:19,278 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 16:02:27,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238945 conditions, 185566 events. 53507/185566 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 2729885 event pairs, 36879 based on Foata normal form. 0/152497 useless extension candidates. Maximal degree in co-relation 115938. Up to 53248 conditions per place. [2023-08-26 16:02:48,373 INFO L119 LiptonReduction]: Number of co-enabled transitions 224874 [2023-08-26 16:02:51,912 INFO L134 LiptonReduction]: Checked pairs total: 888589 [2023-08-26 16:02:51,912 INFO L136 LiptonReduction]: Total number of compositions: 298 [2023-08-26 16:02:51,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 16:02:51,914 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;@16af89aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 16:02:51,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 16:02:52,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 16:02:52,168 INFO L124 PetriNetUnfolderBase]: 726/2430 cut-off events. [2023-08-26 16:02:52,168 INFO L125 PetriNetUnfolderBase]: For 1282/1282 co-relation queries the response was YES. [2023-08-26 16:02:52,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 16:02:52,168 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 16:02:52,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 16:02:52,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 16:02:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash 403697369, now seen corresponding path program 1 times [2023-08-26 16:02:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 16:02:52,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048786949] [2023-08-26 16:02:52,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 16:02:52,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 16:02:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 16:02:52,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 16:02:52,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 16:02:52,222 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 16:02:52,223 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 16:02:52,223 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 16:02:52,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 16:02:52,223 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 16:02:52,224 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 16:02:52,224 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 16:02:52,224 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-26 16:02:52,260 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-26 16:02:52,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 563 transitions, 1420 flow