/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_20-callback_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:45:00,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:45:01,080 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 15:45:01,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:45:01,085 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:45:01,114 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:45:01,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:45:01,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:45:01,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:45:01,120 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:45:01,120 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:45:01,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:45:01,121 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:45:01,122 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:45:01,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:45:01,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:45:01,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:45:01,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:45:01,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:45:01,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:45:01,124 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:45:01,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:45:01,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:45:01,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:45:01,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:45:01,126 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:45:01,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:45:01,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:45:01,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:45:01,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:45:01,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:45:01,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:45:01,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:45:01,128 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:45:01,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:45:01,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:45:01,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:45:01,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:45:01,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:45:01,485 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:45:01,485 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:45:01,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-08-26 15:45:02,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:45:02,965 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:45:02,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-08-26 15:45:02,980 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0548a16/bacfbadeecbe4db88c37d7ee1c49fdfb/FLAGfb762bd83 [2023-08-26 15:45:02,991 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a0548a16/bacfbadeecbe4db88c37d7ee1c49fdfb [2023-08-26 15:45:02,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:45:02,994 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:45:02,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:45:02,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:45:02,997 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:45:02,997 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:45:02" (1/1) ... [2023-08-26 15:45:02,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@529e53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:02, skipping insertion in model container [2023-08-26 15:45:02,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:45:02" (1/1) ... [2023-08-26 15:45:03,039 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:45:03,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:45:03,402 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:45:03,427 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-26 15:45:03,429 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [245] [2023-08-26 15:45:03,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:45:03,499 WARN L669 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 15:45:03,505 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:45:03,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03 WrapperNode [2023-08-26 15:45:03,506 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:45:03,507 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:45:03,507 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:45:03,507 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:45:03,512 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,572 INFO L138 Inliner]: procedures = 173, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 141 [2023-08-26 15:45:03,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:45:03,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:45:03,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:45:03,574 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:45:03,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,598 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,607 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,610 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,614 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:45:03,615 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:45:03,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:45:03,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:45:03,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (1/1) ... [2023-08-26 15:45:03,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:45:03,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:45:03,662 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 15:45:03,673 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 15:45:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:45:03,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:45:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:45:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:45:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:45:03,704 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 15:45:03,704 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 15:45:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:45:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:45:03,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:45:03,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:45:03,706 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 15:45:03,854 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:45:03,856 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:45:04,143 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:45:04,150 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:45:04,151 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-26 15:45:04,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:45:04 BoogieIcfgContainer [2023-08-26 15:45:04,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:45:04,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:45:04,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:45:04,170 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:45:04,170 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:45:02" (1/3) ... [2023-08-26 15:45:04,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402e0736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:45:04, skipping insertion in model container [2023-08-26 15:45:04,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:45:03" (2/3) ... [2023-08-26 15:45:04,171 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402e0736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:45:04, skipping insertion in model container [2023-08-26 15:45:04,172 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:45:04" (3/3) ... [2023-08-26 15:45:04,173 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2023-08-26 15:45:04,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:45:04,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 15:45:04,192 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:45:04,282 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 15:45:04,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 148 transitions, 304 flow [2023-08-26 15:45:04,391 INFO L124 PetriNetUnfolderBase]: 27/225 cut-off events. [2023-08-26 15:45:04,391 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:45:04,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 225 events. 27/225 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 634 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2023-08-26 15:45:04,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 148 transitions, 304 flow [2023-08-26 15:45:04,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 143 transitions, 291 flow [2023-08-26 15:45:04,406 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:04,413 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 143 transitions, 291 flow [2023-08-26 15:45:04,415 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 143 transitions, 291 flow [2023-08-26 15:45:04,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 143 transitions, 291 flow [2023-08-26 15:45:04,447 INFO L124 PetriNetUnfolderBase]: 26/220 cut-off events. [2023-08-26 15:45:04,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:45:04,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 220 events. 26/220 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 590 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2023-08-26 15:45:04,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 3984 [2023-08-26 15:45:07,948 INFO L134 LiptonReduction]: Checked pairs total: 5637 [2023-08-26 15:45:07,949 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-26 15:45:07,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:07,966 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:07,966 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:07,972 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:07,972 INFO L124 PetriNetUnfolderBase]: 7/34 cut-off events. [2023-08-26 15:45:07,972 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:45:07,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:07,973 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 15:45:07,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:07,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash -517538022, now seen corresponding path program 1 times [2023-08-26 15:45:07,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:07,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741535809] [2023-08-26 15:45:07,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:07,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:08,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:08,135 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:08,136 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:08,137 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:08,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:45:08,139 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:08,141 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:08,142 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:08,142 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 15:45:08,165 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 15:45:08,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 174 transitions, 366 flow [2023-08-26 15:45:08,241 INFO L124 PetriNetUnfolderBase]: 45/355 cut-off events. [2023-08-26 15:45:08,241 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:45:08,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 355 events. 45/355 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1297 event pairs, 0 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 227. Up to 9 conditions per place. [2023-08-26 15:45:08,246 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 174 transitions, 366 flow [2023-08-26 15:45:08,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 174 transitions, 366 flow [2023-08-26 15:45:08,250 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:08,250 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 174 transitions, 366 flow [2023-08-26 15:45:08,251 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 174 transitions, 366 flow [2023-08-26 15:45:08,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 174 transitions, 366 flow [2023-08-26 15:45:08,296 INFO L124 PetriNetUnfolderBase]: 45/355 cut-off events. [2023-08-26 15:45:08,297 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:45:08,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 355 events. 45/355 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1297 event pairs, 0 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 227. Up to 9 conditions per place. [2023-08-26 15:45:08,304 INFO L119 LiptonReduction]: Number of co-enabled transitions 9648 [2023-08-26 15:45:11,573 INFO L134 LiptonReduction]: Checked pairs total: 15587 [2023-08-26 15:45:11,573 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-26 15:45:11,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:11,576 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:11,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:11,582 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:11,582 INFO L124 PetriNetUnfolderBase]: 20/77 cut-off events. [2023-08-26 15:45:11,582 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 15:45:11,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:11,582 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 15:45:11,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:11,583 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:11,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2121227673, now seen corresponding path program 1 times [2023-08-26 15:45:11,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:11,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814254778] [2023-08-26 15:45:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:11,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:11,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:11,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:11,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:11,636 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:11,636 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:11,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:45:11,636 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:11,637 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:11,637 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:11,637 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 15:45:11,654 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 15:45:11,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 200 transitions, 430 flow [2023-08-26 15:45:11,703 INFO L124 PetriNetUnfolderBase]: 68/522 cut-off events. [2023-08-26 15:45:11,704 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:45:11,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 522 events. 68/522 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2148 event pairs, 1 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 363. Up to 16 conditions per place. [2023-08-26 15:45:11,708 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 200 transitions, 430 flow [2023-08-26 15:45:11,711 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 200 transitions, 430 flow [2023-08-26 15:45:11,711 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:11,711 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 200 transitions, 430 flow [2023-08-26 15:45:11,711 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 200 transitions, 430 flow [2023-08-26 15:45:11,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 200 transitions, 430 flow [2023-08-26 15:45:11,766 INFO L124 PetriNetUnfolderBase]: 68/522 cut-off events. [2023-08-26 15:45:11,766 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:45:11,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 522 events. 68/522 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2148 event pairs, 1 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 363. Up to 16 conditions per place. [2023-08-26 15:45:11,784 INFO L119 LiptonReduction]: Number of co-enabled transitions 16416 [2023-08-26 15:45:15,171 INFO L134 LiptonReduction]: Checked pairs total: 26268 [2023-08-26 15:45:15,172 INFO L136 LiptonReduction]: Total number of compositions: 184 [2023-08-26 15:45:15,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:15,175 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:15,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:15,183 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:15,183 INFO L124 PetriNetUnfolderBase]: 33/121 cut-off events. [2023-08-26 15:45:15,183 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 15:45:15,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:15,183 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 15:45:15,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:15,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:15,184 INFO L85 PathProgramCache]: Analyzing trace with hash 513488198, now seen corresponding path program 1 times [2023-08-26 15:45:15,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:15,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360007075] [2023-08-26 15:45:15,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:15,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:15,240 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:15,287 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:15,287 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:15,288 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:15,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:45:15,288 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:15,288 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:15,289 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:15,289 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 15:45:15,320 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 15:45:15,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 226 transitions, 496 flow [2023-08-26 15:45:15,399 INFO L124 PetriNetUnfolderBase]: 103/765 cut-off events. [2023-08-26 15:45:15,399 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:45:15,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 765 events. 103/765 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3477 event pairs, 6 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 542. Up to 32 conditions per place. [2023-08-26 15:45:15,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 226 transitions, 496 flow [2023-08-26 15:45:15,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 226 transitions, 496 flow [2023-08-26 15:45:15,412 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:15,412 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 226 transitions, 496 flow [2023-08-26 15:45:15,413 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 226 transitions, 496 flow [2023-08-26 15:45:15,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 226 transitions, 496 flow [2023-08-26 15:45:15,485 INFO L124 PetriNetUnfolderBase]: 103/765 cut-off events. [2023-08-26 15:45:15,485 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:45:15,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 765 events. 103/765 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3477 event pairs, 6 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 542. Up to 32 conditions per place. [2023-08-26 15:45:15,513 INFO L119 LiptonReduction]: Number of co-enabled transitions 24480 [2023-08-26 15:45:18,923 INFO L134 LiptonReduction]: Checked pairs total: 42936 [2023-08-26 15:45:18,924 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-08-26 15:45:18,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:18,926 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:18,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:18,938 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:18,938 INFO L124 PetriNetUnfolderBase]: 50/178 cut-off events. [2023-08-26 15:45:18,938 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-26 15:45:18,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:18,938 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:18,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:18,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 578734875, now seen corresponding path program 1 times [2023-08-26 15:45:18,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:18,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506739766] [2023-08-26 15:45:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:18,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:18,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:19,017 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:19,017 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:19,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:19,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:45:19,018 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:19,018 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:19,018 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:19,019 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-26 15:45:19,038 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-26 15:45:19,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 252 transitions, 564 flow [2023-08-26 15:45:19,203 INFO L124 PetriNetUnfolderBase]: 166/1164 cut-off events. [2023-08-26 15:45:19,204 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:45:19,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 1164 events. 166/1164 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6057 event pairs, 23 based on Foata normal form. 0/933 useless extension candidates. Maximal degree in co-relation 810. Up to 80 conditions per place. [2023-08-26 15:45:19,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 252 transitions, 564 flow [2023-08-26 15:45:19,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 252 transitions, 564 flow [2023-08-26 15:45:19,221 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:19,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 227 places, 252 transitions, 564 flow [2023-08-26 15:45:19,221 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 227 places, 252 transitions, 564 flow [2023-08-26 15:45:19,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 252 transitions, 564 flow [2023-08-26 15:45:19,342 INFO L124 PetriNetUnfolderBase]: 166/1164 cut-off events. [2023-08-26 15:45:19,342 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:45:19,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1275 conditions, 1164 events. 166/1164 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6057 event pairs, 23 based on Foata normal form. 0/933 useless extension candidates. Maximal degree in co-relation 810. Up to 80 conditions per place. [2023-08-26 15:45:19,384 INFO L119 LiptonReduction]: Number of co-enabled transitions 33840 [2023-08-26 15:45:22,746 INFO L134 LiptonReduction]: Checked pairs total: 58249 [2023-08-26 15:45:22,746 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-08-26 15:45:22,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:22,748 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:22,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:22,763 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:22,763 INFO L124 PetriNetUnfolderBase]: 61/228 cut-off events. [2023-08-26 15:45:22,763 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 15:45:22,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:22,763 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:22,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:22,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:22,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2128054083, now seen corresponding path program 1 times [2023-08-26 15:45:22,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:22,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551414200] [2023-08-26 15:45:22,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:22,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:22,795 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:22,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:22,842 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:22,843 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:22,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:45:22,843 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:22,844 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:22,844 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:22,844 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-26 15:45:22,869 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-26 15:45:22,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 278 transitions, 634 flow [2023-08-26 15:45:23,114 INFO L124 PetriNetUnfolderBase]: 293/1883 cut-off events. [2023-08-26 15:45:23,114 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:45:23,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 1883 events. 293/1883 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11424 event pairs, 72 based on Foata normal form. 0/1506 useless extension candidates. Maximal degree in co-relation 1263. Up to 192 conditions per place. [2023-08-26 15:45:23,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 278 transitions, 634 flow [2023-08-26 15:45:23,161 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 278 transitions, 634 flow [2023-08-26 15:45:23,161 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:23,161 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 278 transitions, 634 flow [2023-08-26 15:45:23,161 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 278 transitions, 634 flow [2023-08-26 15:45:23,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 278 transitions, 634 flow [2023-08-26 15:45:23,407 INFO L124 PetriNetUnfolderBase]: 293/1883 cut-off events. [2023-08-26 15:45:23,408 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:45:23,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2115 conditions, 1883 events. 293/1883 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 11424 event pairs, 72 based on Foata normal form. 0/1506 useless extension candidates. Maximal degree in co-relation 1263. Up to 192 conditions per place. [2023-08-26 15:45:23,550 INFO L119 LiptonReduction]: Number of co-enabled transitions 44496 [2023-08-26 15:45:27,352 INFO L134 LiptonReduction]: Checked pairs total: 79355 [2023-08-26 15:45:27,352 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-26 15:45:27,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:27,354 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:27,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:27,374 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:27,374 INFO L124 PetriNetUnfolderBase]: 81/302 cut-off events. [2023-08-26 15:45:27,375 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-26 15:45:27,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:27,375 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:27,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:27,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:27,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2027189109, now seen corresponding path program 1 times [2023-08-26 15:45:27,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:27,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309915073] [2023-08-26 15:45:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:27,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:27,399 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:27,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:27,418 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:27,419 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:27,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:45:27,419 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:27,419 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:27,420 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:27,420 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-26 15:45:27,442 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-26 15:45:27,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 304 transitions, 706 flow [2023-08-26 15:45:27,945 INFO L124 PetriNetUnfolderBase]: 564/3258 cut-off events. [2023-08-26 15:45:27,945 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:45:28,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3756 conditions, 3258 events. 564/3258 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 23385 event pairs, 201 based on Foata normal form. 0/2607 useless extension candidates. Maximal degree in co-relation 2101. Up to 448 conditions per place. [2023-08-26 15:45:28,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 304 transitions, 706 flow [2023-08-26 15:45:28,029 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 273 places, 304 transitions, 706 flow [2023-08-26 15:45:28,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:28,029 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 273 places, 304 transitions, 706 flow [2023-08-26 15:45:28,029 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 273 places, 304 transitions, 706 flow [2023-08-26 15:45:28,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 304 transitions, 706 flow [2023-08-26 15:45:28,572 INFO L124 PetriNetUnfolderBase]: 564/3258 cut-off events. [2023-08-26 15:45:28,572 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:45:28,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3756 conditions, 3258 events. 564/3258 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 23385 event pairs, 201 based on Foata normal form. 0/2607 useless extension candidates. Maximal degree in co-relation 2101. Up to 448 conditions per place. [2023-08-26 15:45:28,715 INFO L119 LiptonReduction]: Number of co-enabled transitions 56448 [2023-08-26 15:45:32,485 INFO L134 LiptonReduction]: Checked pairs total: 108901 [2023-08-26 15:45:32,485 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-08-26 15:45:32,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:32,487 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:32,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:32,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:32,516 INFO L124 PetriNetUnfolderBase]: 109/407 cut-off events. [2023-08-26 15:45:32,516 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-26 15:45:32,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:32,516 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:32,517 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:32,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash -502713278, now seen corresponding path program 1 times [2023-08-26 15:45:32,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:32,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624550128] [2023-08-26 15:45:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:32,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:32,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:32,588 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:32,594 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:32,594 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:32,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:45:32,595 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:32,595 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:32,595 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:32,595 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-26 15:45:32,618 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-26 15:45:32,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 330 transitions, 780 flow [2023-08-26 15:45:33,668 INFO L124 PetriNetUnfolderBase]: 1155/5977 cut-off events. [2023-08-26 15:45:33,669 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:45:33,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 5977 events. 1155/5977 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 50863 event pairs, 522 based on Foata normal form. 0/4796 useless extension candidates. Maximal degree in co-relation 3740. Up to 1024 conditions per place. [2023-08-26 15:45:33,804 INFO L82 GeneralOperation]: Start removeDead. Operand has 296 places, 330 transitions, 780 flow [2023-08-26 15:45:33,839 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 330 transitions, 780 flow [2023-08-26 15:45:33,839 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:33,839 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 296 places, 330 transitions, 780 flow [2023-08-26 15:45:33,840 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 296 places, 330 transitions, 780 flow [2023-08-26 15:45:33,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 296 places, 330 transitions, 780 flow [2023-08-26 15:45:34,833 INFO L124 PetriNetUnfolderBase]: 1155/5977 cut-off events. [2023-08-26 15:45:34,833 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:45:34,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7062 conditions, 5977 events. 1155/5977 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 50863 event pairs, 522 based on Foata normal form. 0/4796 useless extension candidates. Maximal degree in co-relation 3740. Up to 1024 conditions per place. [2023-08-26 15:45:35,055 INFO L119 LiptonReduction]: Number of co-enabled transitions 69696 [2023-08-26 15:45:39,082 INFO L134 LiptonReduction]: Checked pairs total: 126139 [2023-08-26 15:45:39,082 INFO L136 LiptonReduction]: Total number of compositions: 298 [2023-08-26 15:45:39,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:39,084 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:39,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:39,134 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:39,134 INFO L124 PetriNetUnfolderBase]: 137/527 cut-off events. [2023-08-26 15:45:39,134 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-26 15:45:39,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:39,135 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:39,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:39,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:39,135 INFO L85 PathProgramCache]: Analyzing trace with hash -426142063, now seen corresponding path program 1 times [2023-08-26 15:45:39,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:39,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423414930] [2023-08-26 15:45:39,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:39,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:39,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:39,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:39,175 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:39,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:39,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:45:39,175 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:39,176 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:39,176 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:39,176 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-26 15:45:39,204 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 15:45:39,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 356 transitions, 856 flow [2023-08-26 15:45:41,111 INFO L124 PetriNetUnfolderBase]: 2450/11448 cut-off events. [2023-08-26 15:45:41,111 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:45:41,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13825 conditions, 11448 events. 2450/11448 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 111983 event pairs, 1291 based on Foata normal form. 0/9225 useless extension candidates. Maximal degree in co-relation 7044. Up to 2304 conditions per place. [2023-08-26 15:45:41,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 356 transitions, 856 flow [2023-08-26 15:45:41,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 356 transitions, 856 flow [2023-08-26 15:45:41,443 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:41,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 319 places, 356 transitions, 856 flow [2023-08-26 15:45:41,443 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 319 places, 356 transitions, 856 flow [2023-08-26 15:45:41,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 356 transitions, 856 flow [2023-08-26 15:45:43,334 INFO L124 PetriNetUnfolderBase]: 2450/11448 cut-off events. [2023-08-26 15:45:43,334 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:45:43,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13825 conditions, 11448 events. 2450/11448 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 111983 event pairs, 1291 based on Foata normal form. 0/9225 useless extension candidates. Maximal degree in co-relation 7044. Up to 2304 conditions per place. [2023-08-26 15:45:43,836 INFO L119 LiptonReduction]: Number of co-enabled transitions 84240 [2023-08-26 15:45:47,877 INFO L134 LiptonReduction]: Checked pairs total: 158094 [2023-08-26 15:45:47,877 INFO L136 LiptonReduction]: Total number of compositions: 341 [2023-08-26 15:45:47,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:47,879 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:47,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:47,921 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:47,921 INFO L124 PetriNetUnfolderBase]: 183/706 cut-off events. [2023-08-26 15:45:47,921 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-26 15:45:47,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:47,921 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:47,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:47,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:47,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1350098940, now seen corresponding path program 1 times [2023-08-26 15:45:47,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:47,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782670048] [2023-08-26 15:45:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:47,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:47,964 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:47,964 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:47,964 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:47,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:45:47,965 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:47,965 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:47,965 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:47,965 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-26 15:45:47,993 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-26 15:45:47,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 382 transitions, 934 flow [2023-08-26 15:45:52,988 INFO L124 PetriNetUnfolderBase]: 5281/22551 cut-off events. [2023-08-26 15:45:52,988 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:45:53,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27757 conditions, 22551 events. 5281/22551 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 251717 event pairs, 3084 based on Foata normal form. 0/18262 useless extension candidates. Maximal degree in co-relation 13805. Up to 5120 conditions per place. [2023-08-26 15:45:53,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 382 transitions, 934 flow [2023-08-26 15:45:53,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 382 transitions, 934 flow [2023-08-26 15:45:53,434 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:53,434 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 382 transitions, 934 flow [2023-08-26 15:45:53,435 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 382 transitions, 934 flow [2023-08-26 15:45:53,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 382 transitions, 934 flow [2023-08-26 15:45:57,555 INFO L124 PetriNetUnfolderBase]: 5281/22551 cut-off events. [2023-08-26 15:45:57,555 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:45:57,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27757 conditions, 22551 events. 5281/22551 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 251717 event pairs, 3084 based on Foata normal form. 0/18262 useless extension candidates. Maximal degree in co-relation 13805. Up to 5120 conditions per place. [2023-08-26 15:45:58,703 INFO L119 LiptonReduction]: Number of co-enabled transitions 100080 [2023-08-26 15:46:03,069 INFO L134 LiptonReduction]: Checked pairs total: 184109 [2023-08-26 15:46:03,069 INFO L136 LiptonReduction]: Total number of compositions: 343 [2023-08-26 15:46:03,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:46:03,071 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:46:03,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:46:03,147 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:46:03,147 INFO L124 PetriNetUnfolderBase]: 261/984 cut-off events. [2023-08-26 15:46:03,147 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-26 15:46:03,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:46:03,148 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:46:03,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:46:03,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:46:03,148 INFO L85 PathProgramCache]: Analyzing trace with hash 852727965, now seen corresponding path program 1 times [2023-08-26 15:46:03,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:46:03,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730247273] [2023-08-26 15:46:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:46:03,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:46:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:46:03,170 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:46:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:46:03,191 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:46:03,192 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:46:03,192 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:46:03,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 15:46:03,192 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:46:03,192 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:46:03,193 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:46:03,193 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-26 15:46:03,221 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-26 15:46:03,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 408 transitions, 1014 flow [2023-08-26 15:46:12,018 INFO L124 PetriNetUnfolderBase]: 11440/45174 cut-off events. [2023-08-26 15:46:12,018 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:46:13,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56538 conditions, 45174 events. 11440/45174 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 556339 event pairs, 7181 based on Foata normal form. 0/36771 useless extension candidates. Maximal degree in co-relation 27735. Up to 11264 conditions per place. [2023-08-26 15:46:13,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 408 transitions, 1014 flow [2023-08-26 15:46:13,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 408 transitions, 1014 flow [2023-08-26 15:46:13,717 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:46:13,717 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 408 transitions, 1014 flow [2023-08-26 15:46:13,717 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 408 transitions, 1014 flow [2023-08-26 15:46:13,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 408 transitions, 1014 flow [2023-08-26 15:46:22,711 INFO L124 PetriNetUnfolderBase]: 11440/45174 cut-off events. [2023-08-26 15:46:22,711 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:46:23,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56538 conditions, 45174 events. 11440/45174 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 556339 event pairs, 7181 based on Foata normal form. 0/36771 useless extension candidates. Maximal degree in co-relation 27735. Up to 11264 conditions per place. [2023-08-26 15:46:25,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 117216 [2023-08-26 15:46:30,047 INFO L134 LiptonReduction]: Checked pairs total: 231467 [2023-08-26 15:46:30,047 INFO L136 LiptonReduction]: Total number of compositions: 372 [2023-08-26 15:46:30,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:46:30,049 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:46:30,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:46:30,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:46:30,139 INFO L124 PetriNetUnfolderBase]: 392/1408 cut-off events. [2023-08-26 15:46:30,139 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-26 15:46:30,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:46:30,139 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:46:30,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:46:30,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:46:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1465540756, now seen corresponding path program 1 times [2023-08-26 15:46:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:46:30,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083683402] [2023-08-26 15:46:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:46:30,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:46:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:46:30,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:46:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:46:30,186 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:46:30,186 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:46:30,186 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:46:30,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 15:46:30,187 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:46:30,187 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:46:30,187 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:46:30,187 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-26 15:46:30,222 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-26 15:46:30,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 388 places, 434 transitions, 1096 flow [2023-08-26 15:46:50,277 INFO L124 PetriNetUnfolderBase]: 24767/91349 cut-off events. [2023-08-26 15:46:50,277 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:46:54,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116040 conditions, 91349 events. 24767/91349 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 1228238 event pairs, 16398 based on Foata normal form. 0/74736 useless extension candidates. Maximal degree in co-relation 56514. Up to 24576 conditions per place. [2023-08-26 15:46:54,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 388 places, 434 transitions, 1096 flow [2023-08-26 15:46:55,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 388 places, 434 transitions, 1096 flow [2023-08-26 15:46:55,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:46:55,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 388 places, 434 transitions, 1096 flow [2023-08-26 15:46:55,242 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 388 places, 434 transitions, 1096 flow [2023-08-26 15:46:55,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 388 places, 434 transitions, 1096 flow [2023-08-26 15:47:17,520 INFO L124 PetriNetUnfolderBase]: 24767/91349 cut-off events. [2023-08-26 15:47:17,520 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:47:21,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116040 conditions, 91349 events. 24767/91349 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 1228238 event pairs, 16398 based on Foata normal form. 0/74736 useless extension candidates. Maximal degree in co-relation 56514. Up to 24576 conditions per place. [2023-08-26 15:47:26,136 INFO L119 LiptonReduction]: Number of co-enabled transitions 135648 [2023-08-26 15:47:30,575 INFO L134 LiptonReduction]: Checked pairs total: 254469 [2023-08-26 15:47:30,575 INFO L136 LiptonReduction]: Total number of compositions: 396 [2023-08-26 15:47:30,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:47:30,576 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:47:30,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:47:30,762 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:47:30,762 INFO L124 PetriNetUnfolderBase]: 603/2050 cut-off events. [2023-08-26 15:47:30,762 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-26 15:47:30,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:47:30,763 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 15:47:30,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:47:30,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:47:30,763 INFO L85 PathProgramCache]: Analyzing trace with hash 895608463, now seen corresponding path program 1 times [2023-08-26 15:47:30,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:47:30,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035436856] [2023-08-26 15:47:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:47:30,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:47:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:47:30,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:47:30,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:47:30,811 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:47:30,812 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:47:30,812 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:47:30,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 15:47:30,812 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:47:30,813 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:47:30,813 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:47:30,813 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-26 15:47:30,845 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-26 15:47:30,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 460 transitions, 1180 flow [2023-08-26 15:48:15,136 INFO L124 PetriNetUnfolderBase]: 53454/185652 cut-off events. [2023-08-26 15:48:15,137 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:48:23,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239031 conditions, 185652 events. 53454/185652 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 2715035 event pairs, 36879 based on Foata normal form. 0/152637 useless extension candidates. Maximal degree in co-relation 116014. Up to 53248 conditions per place. [2023-08-26 15:48:23,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 411 places, 460 transitions, 1180 flow [2023-08-26 15:48:26,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 460 transitions, 1180 flow [2023-08-26 15:48:26,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:48:26,424 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 460 transitions, 1180 flow [2023-08-26 15:48:26,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 460 transitions, 1180 flow [2023-08-26 15:48:26,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 460 transitions, 1180 flow [2023-08-26 15:49:12,103 INFO L124 PetriNetUnfolderBase]: 53454/185652 cut-off events. [2023-08-26 15:49:12,103 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:49:20,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239031 conditions, 185652 events. 53454/185652 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 2715035 event pairs, 36879 based on Foata normal form. 0/152637 useless extension candidates. Maximal degree in co-relation 116014. Up to 53248 conditions per place. [2023-08-26 15:49:36,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 155376 [2023-08-26 15:49:40,906 INFO L134 LiptonReduction]: Checked pairs total: 295090 [2023-08-26 15:49:40,906 INFO L136 LiptonReduction]: Total number of compositions: 424 [2023-08-26 15:49:40,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:49:40,908 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;@33cf9089, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:49:40,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:49:41,121 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:49:41,121 INFO L124 PetriNetUnfolderBase]: 956/3057 cut-off events. [2023-08-26 15:49:41,121 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2023-08-26 15:49:41,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:49:41,121 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 15:49:41,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:49:41,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:49:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash -985704843, now seen corresponding path program 1 times [2023-08-26 15:49:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:49:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817134086] [2023-08-26 15:49:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:49:41,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:49:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:49:41,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:49:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:49:41,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:49:41,176 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:49:41,176 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:49:41,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 15:49:41,177 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:49:41,177 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:49:41,177 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:49:41,177 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-26 15:49:41,212 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-26 15:49:41,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 486 transitions, 1266 flow