/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_36-indirect_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:51:19,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:51:19,393 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 15:51:19,398 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:51:19,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:51:19,431 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:51:19,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:51:19,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:51:19,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:51:19,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:51:19,437 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:51:19,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:51:19,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:51:19,438 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:51:19,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:51:19,439 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:51:19,439 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:51:19,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:51:19,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:51:19,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:51:19,440 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:51:19,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:51:19,440 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:51:19,441 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:51:19,441 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:51:19,441 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:51:19,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:51:19,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:51:19,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:51:19,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:51:19,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:51:19,443 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:51:19,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:51:19,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:51:19,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:51:19,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:51:19,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:51:19,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:51:19,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:51:19,824 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:51:19,825 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:51:19,826 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-26 15:51:20,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:51:21,204 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:51:21,205 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-26 15:51:21,223 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264edb53d/1233aa87db53453ca708b34c0903d6c6/FLAG450b7dd55 [2023-08-26 15:51:21,240 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/264edb53d/1233aa87db53453ca708b34c0903d6c6 [2023-08-26 15:51:21,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:51:21,246 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:51:21,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:51:21,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:51:21,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:51:21,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba16585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21, skipping insertion in model container [2023-08-26 15:51:21,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,303 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:51:21,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:51:21,637 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:51:21,666 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:51:21,668 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:51:21,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:51:21,741 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:51:21,742 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21 WrapperNode [2023-08-26 15:51:21,742 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:51:21,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:51:21,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:51:21,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:51:21,749 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,768 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,787 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2023-08-26 15:51:21,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:51:21,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:51:21,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:51:21,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:51:21,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,798 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,804 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,807 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,809 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,812 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:51:21,813 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:51:21,813 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:51:21,813 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:51:21,814 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (1/1) ... [2023-08-26 15:51:21,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:51:21,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:51:21,854 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 15:51:21,877 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 15:51:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:51:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:51:21,897 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:51:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:51:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:51:21,898 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 15:51:21,898 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 15:51:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:51:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:51:21,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:51:21,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:51:21,900 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 15:51:22,047 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:51:22,049 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:51:22,323 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:51:22,331 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:51:22,331 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 15:51:22,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:51:22 BoogieIcfgContainer [2023-08-26 15:51:22,333 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:51:22,335 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:51:22,335 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:51:22,337 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:51:22,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:51:21" (1/3) ... [2023-08-26 15:51:22,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609d658b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:51:22, skipping insertion in model container [2023-08-26 15:51:22,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:21" (2/3) ... [2023-08-26 15:51:22,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609d658b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:51:22, skipping insertion in model container [2023-08-26 15:51:22,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:51:22" (3/3) ... [2023-08-26 15:51:22,340 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2023-08-26 15:51:22,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:51:22,356 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-26 15:51:22,356 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:51:22,432 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 15:51:22,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 131 transitions, 270 flow [2023-08-26 15:51:22,554 INFO L124 PetriNetUnfolderBase]: 19/178 cut-off events. [2023-08-26 15:51:22,554 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:51:22,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 178 events. 19/178 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 535 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2023-08-26 15:51:22,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 131 transitions, 270 flow [2023-08-26 15:51:22,563 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 126 transitions, 257 flow [2023-08-26 15:51:22,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:22,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 126 transitions, 257 flow [2023-08-26 15:51:22,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 126 transitions, 257 flow [2023-08-26 15:51:22,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 126 transitions, 257 flow [2023-08-26 15:51:22,639 INFO L124 PetriNetUnfolderBase]: 18/173 cut-off events. [2023-08-26 15:51:22,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:51:22,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 173 events. 18/173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 517 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 92. Up to 4 conditions per place. [2023-08-26 15:51:22,643 INFO L119 LiptonReduction]: Number of co-enabled transitions 4240 [2023-08-26 15:51:26,201 INFO L134 LiptonReduction]: Checked pairs total: 9234 [2023-08-26 15:51:26,202 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-26 15:51:26,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:26,218 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:26,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:26,223 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:26,223 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2023-08-26 15:51:26,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:51:26,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:26,223 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 15:51:26,224 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:26,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:26,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2051275027, now seen corresponding path program 1 times [2023-08-26 15:51:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:26,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857466722] [2023-08-26 15:51:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:26,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:26,331 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:26,368 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:26,370 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:26,371 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:26,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:51:26,372 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:26,374 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:26,375 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:26,375 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 15:51:26,397 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 15:51:26,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 173 transitions, 364 flow [2023-08-26 15:51:26,439 INFO L124 PetriNetUnfolderBase]: 34/294 cut-off events. [2023-08-26 15:51:26,439 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:51:26,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 294 events. 34/294 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1051 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-08-26 15:51:26,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 173 transitions, 364 flow [2023-08-26 15:51:26,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 173 transitions, 364 flow [2023-08-26 15:51:26,447 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:26,447 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 173 transitions, 364 flow [2023-08-26 15:51:26,448 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 173 transitions, 364 flow [2023-08-26 15:51:26,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 173 transitions, 364 flow [2023-08-26 15:51:26,496 INFO L124 PetriNetUnfolderBase]: 34/294 cut-off events. [2023-08-26 15:51:26,497 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:51:26,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 294 events. 34/294 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1051 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 180. Up to 8 conditions per place. [2023-08-26 15:51:26,507 INFO L119 LiptonReduction]: Number of co-enabled transitions 12560 [2023-08-26 15:51:29,915 INFO L134 LiptonReduction]: Checked pairs total: 31150 [2023-08-26 15:51:29,916 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-08-26 15:51:29,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:29,919 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:29,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:29,927 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:29,927 INFO L124 PetriNetUnfolderBase]: 12/85 cut-off events. [2023-08-26 15:51:29,927 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 15:51:29,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:29,927 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 15:51:29,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:29,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:29,928 INFO L85 PathProgramCache]: Analyzing trace with hash 598970168, now seen corresponding path program 1 times [2023-08-26 15:51:29,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:29,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259161686] [2023-08-26 15:51:29,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:29,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:29,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:30,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:30,002 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:30,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:30,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:51:30,003 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:30,003 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:30,004 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:30,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 15:51:30,038 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 15:51:30,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 215 transitions, 460 flow [2023-08-26 15:51:30,090 INFO L124 PetriNetUnfolderBase]: 54/447 cut-off events. [2023-08-26 15:51:30,090 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:51:30,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 447 events. 54/447 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1757 event pairs, 1 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 302. Up to 16 conditions per place. [2023-08-26 15:51:30,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 215 transitions, 460 flow [2023-08-26 15:51:30,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 215 transitions, 460 flow [2023-08-26 15:51:30,096 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:30,096 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 215 transitions, 460 flow [2023-08-26 15:51:30,097 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 215 transitions, 460 flow [2023-08-26 15:51:30,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 215 transitions, 460 flow [2023-08-26 15:51:30,143 INFO L124 PetriNetUnfolderBase]: 54/447 cut-off events. [2023-08-26 15:51:30,143 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:51:30,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 447 events. 54/447 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1757 event pairs, 1 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 302. Up to 16 conditions per place. [2023-08-26 15:51:30,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 24000 [2023-08-26 15:51:33,907 INFO L134 LiptonReduction]: Checked pairs total: 63655 [2023-08-26 15:51:33,907 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-08-26 15:51:33,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:33,910 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:33,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:33,921 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:33,921 INFO L124 PetriNetUnfolderBase]: 24/138 cut-off events. [2023-08-26 15:51:33,921 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 15:51:33,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:33,921 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 15:51:33,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:33,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1206432947, now seen corresponding path program 1 times [2023-08-26 15:51:33,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:33,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173570675] [2023-08-26 15:51:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:33,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:33,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:33,990 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:33,990 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:33,990 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:33,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:51:33,991 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:33,991 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:33,991 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:33,991 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 15:51:34,039 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 15:51:34,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 257 transitions, 558 flow [2023-08-26 15:51:34,135 INFO L124 PetriNetUnfolderBase]: 86/676 cut-off events. [2023-08-26 15:51:34,137 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:51:34,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 676 events. 86/676 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2986 event pairs, 6 based on Foata normal form. 0/501 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2023-08-26 15:51:34,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 257 transitions, 558 flow [2023-08-26 15:51:34,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 257 transitions, 558 flow [2023-08-26 15:51:34,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:34,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 257 transitions, 558 flow [2023-08-26 15:51:34,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 257 transitions, 558 flow [2023-08-26 15:51:34,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 257 transitions, 558 flow [2023-08-26 15:51:34,281 INFO L124 PetriNetUnfolderBase]: 86/676 cut-off events. [2023-08-26 15:51:34,282 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:51:34,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 676 events. 86/676 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2986 event pairs, 6 based on Foata normal form. 0/501 useless extension candidates. Maximal degree in co-relation 467. Up to 32 conditions per place. [2023-08-26 15:51:34,312 INFO L119 LiptonReduction]: Number of co-enabled transitions 38880 [2023-08-26 15:51:38,300 INFO L134 LiptonReduction]: Checked pairs total: 112247 [2023-08-26 15:51:38,300 INFO L136 LiptonReduction]: Total number of compositions: 211 [2023-08-26 15:51:38,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:38,305 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:38,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:38,320 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:38,320 INFO L124 PetriNetUnfolderBase]: 31/191 cut-off events. [2023-08-26 15:51:38,320 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-26 15:51:38,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:38,320 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-26 15:51:38,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:38,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:38,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1404155948, now seen corresponding path program 1 times [2023-08-26 15:51:38,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:38,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617402676] [2023-08-26 15:51:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:38,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:38,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:38,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:38,414 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:38,415 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:38,415 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:38,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:51:38,415 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:38,415 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:38,415 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:38,415 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-26 15:51:38,440 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-26 15:51:38,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 299 transitions, 658 flow [2023-08-26 15:51:38,587 INFO L124 PetriNetUnfolderBase]: 146/1061 cut-off events. [2023-08-26 15:51:38,588 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:51:38,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 1061 events. 146/1061 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5394 event pairs, 23 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 721. Up to 80 conditions per place. [2023-08-26 15:51:38,603 INFO L82 GeneralOperation]: Start removeDead. Operand has 269 places, 299 transitions, 658 flow [2023-08-26 15:51:38,613 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 299 transitions, 658 flow [2023-08-26 15:51:38,613 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:38,613 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 299 transitions, 658 flow [2023-08-26 15:51:38,614 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 299 transitions, 658 flow [2023-08-26 15:51:38,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 299 transitions, 658 flow [2023-08-26 15:51:38,780 INFO L124 PetriNetUnfolderBase]: 146/1061 cut-off events. [2023-08-26 15:51:38,781 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:51:38,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 1061 events. 146/1061 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5394 event pairs, 23 based on Foata normal form. 0/797 useless extension candidates. Maximal degree in co-relation 721. Up to 80 conditions per place. [2023-08-26 15:51:38,821 INFO L119 LiptonReduction]: Number of co-enabled transitions 57200 [2023-08-26 15:51:43,112 INFO L134 LiptonReduction]: Checked pairs total: 188765 [2023-08-26 15:51:43,113 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-08-26 15:51:43,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:43,115 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:43,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:43,136 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:43,137 INFO L124 PetriNetUnfolderBase]: 43/257 cut-off events. [2023-08-26 15:51:43,137 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 15:51:43,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:43,137 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:51:43,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:43,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1476513306, now seen corresponding path program 1 times [2023-08-26 15:51:43,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:43,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643952258] [2023-08-26 15:51:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:43,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:43,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:43,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:43,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:43,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:43,185 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:43,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:51:43,185 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:43,186 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:43,186 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:43,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-26 15:51:43,216 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-26 15:51:43,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 341 transitions, 760 flow [2023-08-26 15:51:43,532 INFO L124 PetriNetUnfolderBase]: 270/1766 cut-off events. [2023-08-26 15:51:43,533 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:51:43,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1998 conditions, 1766 events. 270/1766 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10632 event pairs, 72 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 1160. Up to 192 conditions per place. [2023-08-26 15:51:43,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 306 places, 341 transitions, 760 flow [2023-08-26 15:51:43,570 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 306 places, 341 transitions, 760 flow [2023-08-26 15:51:43,570 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:43,570 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 341 transitions, 760 flow [2023-08-26 15:51:43,570 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 341 transitions, 760 flow [2023-08-26 15:51:43,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 341 transitions, 760 flow [2023-08-26 15:51:43,869 INFO L124 PetriNetUnfolderBase]: 270/1766 cut-off events. [2023-08-26 15:51:43,870 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:51:43,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1998 conditions, 1766 events. 270/1766 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10632 event pairs, 72 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 1160. Up to 192 conditions per place. [2023-08-26 15:51:43,989 INFO L119 LiptonReduction]: Number of co-enabled transitions 78960 [2023-08-26 15:51:48,528 INFO L134 LiptonReduction]: Checked pairs total: 241794 [2023-08-26 15:51:48,528 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-08-26 15:51:48,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:48,530 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:48,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:48,560 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:48,560 INFO L124 PetriNetUnfolderBase]: 58/335 cut-off events. [2023-08-26 15:51:48,560 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-26 15:51:48,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:48,561 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:51:48,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:48,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash -608509919, now seen corresponding path program 1 times [2023-08-26 15:51:48,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:48,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387490308] [2023-08-26 15:51:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:48,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:48,603 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:48,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:48,637 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:48,637 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:48,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:51:48,637 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:48,638 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:48,638 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:48,638 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-26 15:51:48,687 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-26 15:51:48,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 383 transitions, 864 flow [2023-08-26 15:51:49,243 INFO L124 PetriNetUnfolderBase]: 538/3127 cut-off events. [2023-08-26 15:51:49,244 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:51:49,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 3127 events. 538/3127 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 22438 event pairs, 201 based on Foata normal form. 0/2429 useless extension candidates. Maximal degree in co-relation 1984. Up to 448 conditions per place. [2023-08-26 15:51:49,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 343 places, 383 transitions, 864 flow [2023-08-26 15:51:49,353 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 383 transitions, 864 flow [2023-08-26 15:51:49,353 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:49,354 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 343 places, 383 transitions, 864 flow [2023-08-26 15:51:49,354 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 343 places, 383 transitions, 864 flow [2023-08-26 15:51:49,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 383 transitions, 864 flow [2023-08-26 15:51:49,889 INFO L124 PetriNetUnfolderBase]: 538/3127 cut-off events. [2023-08-26 15:51:49,890 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:51:49,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 3127 events. 538/3127 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 22438 event pairs, 201 based on Foata normal form. 0/2429 useless extension candidates. Maximal degree in co-relation 1984. Up to 448 conditions per place. [2023-08-26 15:51:50,073 INFO L119 LiptonReduction]: Number of co-enabled transitions 104160 [2023-08-26 15:51:54,801 INFO L134 LiptonReduction]: Checked pairs total: 362071 [2023-08-26 15:51:54,802 INFO L136 LiptonReduction]: Total number of compositions: 297 [2023-08-26 15:51:54,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:54,803 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:54,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:54,846 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:54,846 INFO L124 PetriNetUnfolderBase]: 78/437 cut-off events. [2023-08-26 15:51:54,846 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-26 15:51:54,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:54,846 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:51:54,846 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:54,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:54,847 INFO L85 PathProgramCache]: Analyzing trace with hash -539390953, now seen corresponding path program 1 times [2023-08-26 15:51:54,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:54,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108494251] [2023-08-26 15:51:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:54,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:54,869 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:54,888 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:54,889 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:54,889 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:54,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:51:54,889 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:54,889 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:54,890 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:54,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-26 15:51:54,920 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-26 15:51:54,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 425 transitions, 970 flow [2023-08-26 15:51:56,035 INFO L124 PetriNetUnfolderBase]: 1126/5832 cut-off events. [2023-08-26 15:51:56,035 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:51:56,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6917 conditions, 5832 events. 1126/5832 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49169 event pairs, 522 based on Foata normal form. 0/4597 useless extension candidates. Maximal degree in co-relation 3609. Up to 1024 conditions per place. [2023-08-26 15:51:56,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 380 places, 425 transitions, 970 flow [2023-08-26 15:51:56,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 380 places, 425 transitions, 970 flow [2023-08-26 15:51:56,158 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:56,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 380 places, 425 transitions, 970 flow [2023-08-26 15:51:56,158 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 380 places, 425 transitions, 970 flow [2023-08-26 15:51:56,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 425 transitions, 970 flow [2023-08-26 15:51:57,275 INFO L124 PetriNetUnfolderBase]: 1126/5832 cut-off events. [2023-08-26 15:51:57,275 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:51:57,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6917 conditions, 5832 events. 1126/5832 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49169 event pairs, 522 based on Foata normal form. 0/4597 useless extension candidates. Maximal degree in co-relation 3609. Up to 1024 conditions per place. [2023-08-26 15:51:57,550 INFO L119 LiptonReduction]: Number of co-enabled transitions 132800 [2023-08-26 15:52:02,506 INFO L134 LiptonReduction]: Checked pairs total: 418767 [2023-08-26 15:52:02,506 INFO L136 LiptonReduction]: Total number of compositions: 328 [2023-08-26 15:52:02,508 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:52:02,508 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:52:02,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:52:02,568 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:52:02,568 INFO L124 PetriNetUnfolderBase]: 107/572 cut-off events. [2023-08-26 15:52:02,568 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-26 15:52:02,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:52:02,568 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:52:02,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:52:02,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:52:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1047277861, now seen corresponding path program 1 times [2023-08-26 15:52:02,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:52:02,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986624308] [2023-08-26 15:52:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:52:02,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:52:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:02,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:52:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:02,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:52:02,609 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:52:02,609 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:52:02,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:52:02,609 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:52:02,610 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:52:02,610 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:52:02,610 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-26 15:52:02,646 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 15:52:02,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 417 places, 467 transitions, 1078 flow [2023-08-26 15:52:05,112 INFO L124 PetriNetUnfolderBase]: 2418/11289 cut-off events. [2023-08-26 15:52:05,112 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:52:05,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13666 conditions, 11289 events. 2418/11289 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 111022 event pairs, 1291 based on Foata normal form. 0/9005 useless extension candidates. Maximal degree in co-relation 6899. Up to 2304 conditions per place. [2023-08-26 15:52:05,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 417 places, 467 transitions, 1078 flow [2023-08-26 15:52:05,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 467 transitions, 1078 flow [2023-08-26 15:52:05,449 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:52:05,449 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 417 places, 467 transitions, 1078 flow [2023-08-26 15:52:05,450 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 417 places, 467 transitions, 1078 flow [2023-08-26 15:52:05,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 417 places, 467 transitions, 1078 flow [2023-08-26 15:52:07,814 INFO L124 PetriNetUnfolderBase]: 2418/11289 cut-off events. [2023-08-26 15:52:07,814 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:52:07,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13666 conditions, 11289 events. 2418/11289 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 111022 event pairs, 1291 based on Foata normal form. 0/9005 useless extension candidates. Maximal degree in co-relation 6899. Up to 2304 conditions per place. [2023-08-26 15:52:08,496 INFO L119 LiptonReduction]: Number of co-enabled transitions 164880 [2023-08-26 15:52:13,922 INFO L134 LiptonReduction]: Checked pairs total: 528120 [2023-08-26 15:52:13,922 INFO L136 LiptonReduction]: Total number of compositions: 360 [2023-08-26 15:52:13,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:52:13,924 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:52:13,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:52:14,007 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:52:14,007 INFO L124 PetriNetUnfolderBase]: 152/759 cut-off events. [2023-08-26 15:52:14,007 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-26 15:52:14,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:52:14,007 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:52:14,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:52:14,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:52:14,008 INFO L85 PathProgramCache]: Analyzing trace with hash 133278868, now seen corresponding path program 1 times [2023-08-26 15:52:14,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:52:14,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124471238] [2023-08-26 15:52:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:52:14,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:52:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:14,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:52:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:14,065 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:52:14,065 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:52:14,066 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:52:14,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:52:14,068 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:52:14,071 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:52:14,071 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:52:14,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-26 15:52:14,112 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-26 15:52:14,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 454 places, 509 transitions, 1188 flow [2023-08-26 15:52:19,387 INFO L124 PetriNetUnfolderBase]: 5246/22378 cut-off events. [2023-08-26 15:52:19,387 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:52:19,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27584 conditions, 22378 events. 5246/22378 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 248325 event pairs, 3084 based on Foata normal form. 0/18021 useless extension candidates. Maximal degree in co-relation 13646. Up to 5120 conditions per place. [2023-08-26 15:52:19,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 454 places, 509 transitions, 1188 flow [2023-08-26 15:52:19,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 454 places, 509 transitions, 1188 flow [2023-08-26 15:52:19,950 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:52:19,950 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 454 places, 509 transitions, 1188 flow [2023-08-26 15:52:19,951 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 454 places, 509 transitions, 1188 flow [2023-08-26 15:52:19,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 454 places, 509 transitions, 1188 flow [2023-08-26 15:52:25,189 INFO L124 PetriNetUnfolderBase]: 5246/22378 cut-off events. [2023-08-26 15:52:25,189 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:52:25,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27584 conditions, 22378 events. 5246/22378 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 248325 event pairs, 3084 based on Foata normal form. 0/18021 useless extension candidates. Maximal degree in co-relation 13646. Up to 5120 conditions per place. [2023-08-26 15:52:26,797 INFO L119 LiptonReduction]: Number of co-enabled transitions 200400 [2023-08-26 15:52:32,528 INFO L134 LiptonReduction]: Checked pairs total: 643354 [2023-08-26 15:52:32,528 INFO L136 LiptonReduction]: Total number of compositions: 382 [2023-08-26 15:52:32,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:52:32,530 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:52:32,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:52:32,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:52:32,686 INFO L124 PetriNetUnfolderBase]: 226/1033 cut-off events. [2023-08-26 15:52:32,686 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-26 15:52:32,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:52:32,686 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:52:32,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:52:32,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:52:32,686 INFO L85 PathProgramCache]: Analyzing trace with hash 689767466, now seen corresponding path program 1 times [2023-08-26 15:52:32,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:52:32,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941911362] [2023-08-26 15:52:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:52:32,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:52:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:32,710 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:52:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:32,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:52:32,731 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:52:32,731 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:52:32,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 15:52:32,731 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:52:32,732 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:52:32,732 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:52:32,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-26 15:52:32,770 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-26 15:52:32,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 491 places, 551 transitions, 1300 flow [2023-08-26 15:52:44,862 INFO L124 PetriNetUnfolderBase]: 11402/44987 cut-off events. [2023-08-26 15:52:44,862 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:52:45,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56351 conditions, 44987 events. 11402/44987 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 556917 event pairs, 7181 based on Foata normal form. 0/36509 useless extension candidates. Maximal degree in co-relation 27562. Up to 11264 conditions per place. [2023-08-26 15:52:45,932 INFO L82 GeneralOperation]: Start removeDead. Operand has 491 places, 551 transitions, 1300 flow [2023-08-26 15:52:46,732 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 491 places, 551 transitions, 1300 flow [2023-08-26 15:52:46,732 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:52:46,732 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 491 places, 551 transitions, 1300 flow [2023-08-26 15:52:46,733 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 491 places, 551 transitions, 1300 flow [2023-08-26 15:52:46,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 491 places, 551 transitions, 1300 flow [2023-08-26 15:52:58,295 INFO L124 PetriNetUnfolderBase]: 11402/44987 cut-off events. [2023-08-26 15:52:58,295 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:52:59,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56351 conditions, 44987 events. 11402/44987 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 556917 event pairs, 7181 based on Foata normal form. 0/36509 useless extension candidates. Maximal degree in co-relation 27562. Up to 11264 conditions per place. [2023-08-26 15:53:01,878 INFO L119 LiptonReduction]: Number of co-enabled transitions 239360 [2023-08-26 15:53:08,011 INFO L134 LiptonReduction]: Checked pairs total: 875342 [2023-08-26 15:53:08,011 INFO L136 LiptonReduction]: Total number of compositions: 416 [2023-08-26 15:53:08,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:53:08,013 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:53:08,013 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:53:08,161 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:53:08,161 INFO L124 PetriNetUnfolderBase]: 351/1460 cut-off events. [2023-08-26 15:53:08,161 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-26 15:53:08,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:53:08,161 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:53:08,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:53:08,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:53:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash 424867585, now seen corresponding path program 1 times [2023-08-26 15:53:08,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:53:08,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075953641] [2023-08-26 15:53:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:53:08,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:53:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:53:08,207 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:53:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:53:08,230 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:53:08,230 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:53:08,230 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:53:08,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 15:53:08,230 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:53:08,231 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:53:08,231 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:53:08,231 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-26 15:53:08,272 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-26 15:53:08,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 528 places, 593 transitions, 1414 flow [2023-08-26 15:53:36,533 INFO L124 PetriNetUnfolderBase]: 24726/91148 cut-off events. [2023-08-26 15:53:36,534 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:53:41,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115839 conditions, 91148 events. 24726/91148 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 1228115 event pairs, 16398 based on Foata normal form. 0/74453 useless extension candidates. Maximal degree in co-relation 56327. Up to 24576 conditions per place. [2023-08-26 15:53:41,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 528 places, 593 transitions, 1414 flow [2023-08-26 15:53:43,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 528 places, 593 transitions, 1414 flow [2023-08-26 15:53:43,157 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:53:43,157 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 528 places, 593 transitions, 1414 flow [2023-08-26 15:53:43,157 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 528 places, 593 transitions, 1414 flow [2023-08-26 15:53:43,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 528 places, 593 transitions, 1414 flow [2023-08-26 15:54:09,106 INFO L124 PetriNetUnfolderBase]: 24726/91148 cut-off events. [2023-08-26 15:54:09,106 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:54:12,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115839 conditions, 91148 events. 24726/91148 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 1228115 event pairs, 16398 based on Foata normal form. 0/74453 useless extension candidates. Maximal degree in co-relation 56327. Up to 24576 conditions per place. [2023-08-26 15:54:22,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 281760 [2023-08-26 15:54:28,504 INFO L134 LiptonReduction]: Checked pairs total: 926611 [2023-08-26 15:54:28,504 INFO L136 LiptonReduction]: Total number of compositions: 439 [2023-08-26 15:54:28,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:54:28,505 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:54:28,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:54:28,730 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:54:28,730 INFO L124 PetriNetUnfolderBase]: 560/2109 cut-off events. [2023-08-26 15:54:28,730 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-26 15:54:28,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:54:28,730 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 15:54:28,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:54:28,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:54:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash 480950823, now seen corresponding path program 1 times [2023-08-26 15:54:28,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:54:28,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221742307] [2023-08-26 15:54:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:54:28,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:54:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:54:28,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:54:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:54:28,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:54:28,780 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:54:28,780 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:54:28,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 15:54:28,781 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:54:28,781 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:54:28,781 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:54:28,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-26 15:54:28,825 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-26 15:54:28,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 565 places, 635 transitions, 1530 flow [2023-08-26 15:55:30,251 INFO L124 PetriNetUnfolderBase]: 53410/185437 cut-off events. [2023-08-26 15:55:30,251 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:55:39,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238816 conditions, 185437 events. 53410/185437 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 2709050 event pairs, 36879 based on Foata normal form. 0/152333 useless extension candidates. Maximal degree in co-relation 115813. Up to 53248 conditions per place. [2023-08-26 15:55:39,159 INFO L82 GeneralOperation]: Start removeDead. Operand has 565 places, 635 transitions, 1530 flow [2023-08-26 15:55:43,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 565 places, 635 transitions, 1530 flow [2023-08-26 15:55:43,100 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:55:43,100 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 565 places, 635 transitions, 1530 flow [2023-08-26 15:55:43,101 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 565 places, 635 transitions, 1530 flow [2023-08-26 15:55:43,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 565 places, 635 transitions, 1530 flow [2023-08-26 15:56:42,338 INFO L124 PetriNetUnfolderBase]: 53410/185437 cut-off events. [2023-08-26 15:56:42,338 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:56:51,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238816 conditions, 185437 events. 53410/185437 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 2709050 event pairs, 36879 based on Foata normal form. 0/152333 useless extension candidates. Maximal degree in co-relation 115813. Up to 53248 conditions per place. [2023-08-26 15:57:16,486 INFO L119 LiptonReduction]: Number of co-enabled transitions 327600 [2023-08-26 15:57:23,626 INFO L134 LiptonReduction]: Checked pairs total: 1214856 [2023-08-26 15:57:23,626 INFO L136 LiptonReduction]: Total number of compositions: 501 [2023-08-26 15:57:23,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:57:23,628 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;@bc6329, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:57:23,628 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:57:23,970 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:57:23,970 INFO L124 PetriNetUnfolderBase]: 913/3082 cut-off events. [2023-08-26 15:57:23,970 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2023-08-26 15:57:23,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:57:23,970 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 15:57:23,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:57:23,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:57:23,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1848057668, now seen corresponding path program 1 times [2023-08-26 15:57:23,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:57:23,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328875114] [2023-08-26 15:57:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:57:23,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:57:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:23,997 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:57:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:57:24,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:57:24,022 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:57:24,022 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:57:24,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 15:57:24,022 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:57:24,023 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:57:24,023 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:57:24,023 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-26 15:57:24,076 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-26 15:57:24,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 602 places, 677 transitions, 1648 flow