/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_07-cond_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:39:34,064 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:39:34,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 15:39:34,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:39:34,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:39:34,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:39:34,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:39:34,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:39:34,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:39:34,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:39:34,142 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:39:34,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:39:34,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:39:34,142 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:39:34,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:39:34,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:39:34,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:39:34,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:39:34,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:39:34,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:39:34,144 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:39:34,148 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:39:34,148 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:39:34,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:39:34,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:39:34,152 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:39:34,153 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:39:34,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:39:34,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:39:34,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:39:34,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:39:34,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:39:34,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:39:34,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:39:34,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:39:34,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:39:34,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:39:34,438 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:39:34,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:39:34,441 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:39:34,441 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:39:34,442 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-26 15:39:35,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:39:35,647 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:39:35,648 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-08-26 15:39:35,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373c51de2/c8c474be2ea04ddfb11414b1ff8befd1/FLAGa28857c62 [2023-08-26 15:39:35,677 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/373c51de2/c8c474be2ea04ddfb11414b1ff8befd1 [2023-08-26 15:39:35,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:39:35,682 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:39:35,684 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:39:35,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:39:35,687 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:39:35,687 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:39:35" (1/1) ... [2023-08-26 15:39:35,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54573c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:35, skipping insertion in model container [2023-08-26 15:39:35,688 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:39:35" (1/1) ... [2023-08-26 15:39:35,721 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:39:36,012 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:39:36,020 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:39:36,027 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [119] [2023-08-26 15:39:36,035 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-26 15:39:36,035 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [481] [2023-08-26 15:39:36,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:39:36,083 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:39:36,083 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36 WrapperNode [2023-08-26 15:39:36,083 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:39:36,084 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:39:36,084 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:39:36,084 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:39:36,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,108 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,139 INFO L138 Inliner]: procedures = 270, calls = 31, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-08-26 15:39:36,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:39:36,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:39:36,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:39:36,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:39:36,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,146 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,146 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,155 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:39:36,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:39:36,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:39:36,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:39:36,164 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (1/1) ... [2023-08-26 15:39:36,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:39:36,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:39:36,184 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 15:39:36,190 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 15:39:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:39:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:39:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:39:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:39:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:39:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:39:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 15:39:36,209 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 15:39:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:39:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:39:36,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:39:36,210 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 15:39:36,315 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:39:36,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:39:36,518 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:39:36,525 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:39:36,526 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 15:39:36,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:39:36 BoogieIcfgContainer [2023-08-26 15:39:36,527 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:39:36,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:39:36,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:39:36,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:39:36,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:39:35" (1/3) ... [2023-08-26 15:39:36,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ffa42e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:39:36, skipping insertion in model container [2023-08-26 15:39:36,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:39:36" (2/3) ... [2023-08-26 15:39:36,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ffa42e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:39:36, skipping insertion in model container [2023-08-26 15:39:36,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:39:36" (3/3) ... [2023-08-26 15:39:36,534 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-08-26 15:39:36,545 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:39:36,545 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-08-26 15:39:36,545 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:39:36,616 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 15:39:36,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 131 transitions, 270 flow [2023-08-26 15:39:36,708 INFO L124 PetriNetUnfolderBase]: 25/183 cut-off events. [2023-08-26 15:39:36,708 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:39:36,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 183 events. 25/183 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 456 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-08-26 15:39:36,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 131 transitions, 270 flow [2023-08-26 15:39:36,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 126 transitions, 257 flow [2023-08-26 15:39:36,724 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:39:36,733 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 126 transitions, 257 flow [2023-08-26 15:39:36,736 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 126 transitions, 257 flow [2023-08-26 15:39:36,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 126 transitions, 257 flow [2023-08-26 15:39:36,768 INFO L124 PetriNetUnfolderBase]: 24/178 cut-off events. [2023-08-26 15:39:36,768 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:39:36,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 178 events. 24/178 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 438 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 91. Up to 6 conditions per place. [2023-08-26 15:39:36,771 INFO L119 LiptonReduction]: Number of co-enabled transitions 3248 [2023-08-26 15:39:39,501 INFO L134 LiptonReduction]: Checked pairs total: 5290 [2023-08-26 15:39:39,502 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-26 15:39:39,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:39:39,522 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:39:39,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:39:39,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:39:39,532 INFO L124 PetriNetUnfolderBase]: 5/33 cut-off events. [2023-08-26 15:39:39,532 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:39:39,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:39:39,532 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 15:39:39,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:39:39,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:39:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2104840082, now seen corresponding path program 1 times [2023-08-26 15:39:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:39:39,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836502616] [2023-08-26 15:39:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:39:39,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:39:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:39,619 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:39:39,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:39,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:39:39,652 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:39:39,655 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:39:39,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:39:39,656 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:39:39,660 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:39:39,660 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:39:39,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 15:39:39,683 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 15:39:39,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 161 transitions, 340 flow [2023-08-26 15:39:39,712 INFO L124 PetriNetUnfolderBase]: 43/292 cut-off events. [2023-08-26 15:39:39,712 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:39:39,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 43/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 900 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 185. Up to 9 conditions per place. [2023-08-26 15:39:39,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 161 transitions, 340 flow [2023-08-26 15:39:39,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 161 transitions, 340 flow [2023-08-26 15:39:39,715 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:39:39,715 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 161 transitions, 340 flow [2023-08-26 15:39:39,716 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 161 transitions, 340 flow [2023-08-26 15:39:39,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 161 transitions, 340 flow [2023-08-26 15:39:39,733 INFO L124 PetriNetUnfolderBase]: 43/292 cut-off events. [2023-08-26 15:39:39,733 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:39:39,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 292 events. 43/292 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 900 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 185. Up to 9 conditions per place. [2023-08-26 15:39:39,737 INFO L119 LiptonReduction]: Number of co-enabled transitions 8680 [2023-08-26 15:39:42,270 INFO L134 LiptonReduction]: Checked pairs total: 20148 [2023-08-26 15:39:42,270 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-26 15:39:42,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:39:42,273 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:39:42,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:39:42,278 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:39:42,278 INFO L124 PetriNetUnfolderBase]: 19/80 cut-off events. [2023-08-26 15:39:42,278 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 15:39:42,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:39:42,279 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 15:39:42,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:39:42,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:39:42,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1901181692, now seen corresponding path program 1 times [2023-08-26 15:39:42,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:39:42,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251157201] [2023-08-26 15:39:42,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:39:42,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:39:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:42,308 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:39:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:42,354 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:39:42,354 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:39:42,354 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:39:42,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:39:42,355 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:39:42,355 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:39:42,356 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:39:42,356 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 15:39:42,374 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 15:39:42,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 191 transitions, 412 flow [2023-08-26 15:39:42,419 INFO L124 PetriNetUnfolderBase]: 66/438 cut-off events. [2023-08-26 15:39:42,420 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:39:42,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 438 events. 66/438 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1528 event pairs, 1 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-26 15:39:42,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 191 transitions, 412 flow [2023-08-26 15:39:42,424 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 191 transitions, 412 flow [2023-08-26 15:39:42,424 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:39:42,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 191 transitions, 412 flow [2023-08-26 15:39:42,425 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 191 transitions, 412 flow [2023-08-26 15:39:42,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 191 transitions, 412 flow [2023-08-26 15:39:42,472 INFO L124 PetriNetUnfolderBase]: 66/438 cut-off events. [2023-08-26 15:39:42,472 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:39:42,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 438 events. 66/438 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1528 event pairs, 1 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 300. Up to 16 conditions per place. [2023-08-26 15:39:42,482 INFO L119 LiptonReduction]: Number of co-enabled transitions 15624 [2023-08-26 15:39:44,981 INFO L134 LiptonReduction]: Checked pairs total: 37934 [2023-08-26 15:39:44,981 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-26 15:39:44,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:39:44,983 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:39:44,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:39:44,989 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:39:44,989 INFO L124 PetriNetUnfolderBase]: 26/117 cut-off events. [2023-08-26 15:39:44,990 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 15:39:44,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:39:44,990 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 15:39:44,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:39:44,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:39:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1934266784, now seen corresponding path program 1 times [2023-08-26 15:39:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:39:44,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013268633] [2023-08-26 15:39:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:39:44,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:39:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:45,034 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:39:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:45,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:39:45,051 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:39:45,051 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:39:45,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:39:45,052 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:39:45,052 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:39:45,052 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:39:45,052 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 15:39:45,067 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 15:39:45,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 221 transitions, 486 flow [2023-08-26 15:39:45,122 INFO L124 PetriNetUnfolderBase]: 101/660 cut-off events. [2023-08-26 15:39:45,122 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:39:45,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 660 events. 101/660 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2670 event pairs, 6 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 458. Up to 32 conditions per place. [2023-08-26 15:39:45,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 221 transitions, 486 flow [2023-08-26 15:39:45,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 221 transitions, 486 flow [2023-08-26 15:39:45,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:39:45,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 221 transitions, 486 flow [2023-08-26 15:39:45,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 221 transitions, 486 flow [2023-08-26 15:39:45,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 221 transitions, 486 flow [2023-08-26 15:39:45,188 INFO L124 PetriNetUnfolderBase]: 101/660 cut-off events. [2023-08-26 15:39:45,188 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:39:45,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 660 events. 101/660 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2670 event pairs, 6 based on Foata normal form. 0/512 useless extension candidates. Maximal degree in co-relation 458. Up to 32 conditions per place. [2023-08-26 15:39:45,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 24304 [2023-08-26 15:39:47,871 INFO L134 LiptonReduction]: Checked pairs total: 64191 [2023-08-26 15:39:47,871 INFO L136 LiptonReduction]: Total number of compositions: 165 [2023-08-26 15:39:47,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:39:47,873 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:39:47,873 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:39:47,882 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:39:47,882 INFO L124 PetriNetUnfolderBase]: 44/179 cut-off events. [2023-08-26 15:39:47,882 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-26 15:39:47,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:39:47,882 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-26 15:39:47,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:39:47,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:39:47,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1396474344, now seen corresponding path program 1 times [2023-08-26 15:39:47,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:39:47,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553004341] [2023-08-26 15:39:47,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:39:47,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:39:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:47,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:39:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:47,913 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:39:47,913 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:39:47,914 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:39:47,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:39:47,914 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:39:47,914 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:39:47,914 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:39:47,914 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-26 15:39:47,935 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-26 15:39:47,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 251 transitions, 562 flow [2023-08-26 15:39:48,030 INFO L124 PetriNetUnfolderBase]: 164/1038 cut-off events. [2023-08-26 15:39:48,030 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:39:48,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 1038 events. 164/1038 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5041 event pairs, 23 based on Foata normal form. 0/808 useless extension candidates. Maximal degree in co-relation 705. Up to 80 conditions per place. [2023-08-26 15:39:48,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 218 places, 251 transitions, 562 flow [2023-08-26 15:39:48,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 218 places, 251 transitions, 562 flow [2023-08-26 15:39:48,044 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:39:48,044 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 251 transitions, 562 flow [2023-08-26 15:39:48,044 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 251 transitions, 562 flow [2023-08-26 15:39:48,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 218 places, 251 transitions, 562 flow [2023-08-26 15:39:48,132 INFO L124 PetriNetUnfolderBase]: 164/1038 cut-off events. [2023-08-26 15:39:48,132 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:39:48,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1149 conditions, 1038 events. 164/1038 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5041 event pairs, 23 based on Foata normal form. 0/808 useless extension candidates. Maximal degree in co-relation 705. Up to 80 conditions per place. [2023-08-26 15:39:48,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 34720 [2023-08-26 15:39:50,823 INFO L134 LiptonReduction]: Checked pairs total: 95458 [2023-08-26 15:39:50,823 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-08-26 15:39:50,826 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:39:50,827 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:39:50,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:39:50,838 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:39:50,838 INFO L124 PetriNetUnfolderBase]: 52/224 cut-off events. [2023-08-26 15:39:50,838 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 15:39:50,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:39:50,839 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:39:50,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:39:50,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:39:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash -619005967, now seen corresponding path program 1 times [2023-08-26 15:39:50,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:39:50,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343821919] [2023-08-26 15:39:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:39:50,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:39:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:50,867 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:39:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:50,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:39:50,903 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:39:50,903 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:39:50,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:39:50,903 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:39:50,903 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:39:50,904 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:39:50,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-26 15:39:50,922 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-26 15:39:50,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 281 transitions, 640 flow [2023-08-26 15:39:51,100 INFO L124 PetriNetUnfolderBase]: 291/1736 cut-off events. [2023-08-26 15:39:51,100 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:39:51,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 1736 events. 291/1736 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10121 event pairs, 72 based on Foata normal form. 0/1360 useless extension candidates. Maximal degree in co-relation 1137. Up to 192 conditions per place. [2023-08-26 15:39:51,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 281 transitions, 640 flow [2023-08-26 15:39:51,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 281 transitions, 640 flow [2023-08-26 15:39:51,128 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:39:51,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 281 transitions, 640 flow [2023-08-26 15:39:51,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 281 transitions, 640 flow [2023-08-26 15:39:51,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 281 transitions, 640 flow [2023-08-26 15:39:51,324 INFO L124 PetriNetUnfolderBase]: 291/1736 cut-off events. [2023-08-26 15:39:51,324 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:39:51,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1968 conditions, 1736 events. 291/1736 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10121 event pairs, 72 based on Foata normal form. 0/1360 useless extension candidates. Maximal degree in co-relation 1137. Up to 192 conditions per place. [2023-08-26 15:39:51,374 INFO L119 LiptonReduction]: Number of co-enabled transitions 46872 [2023-08-26 15:39:54,106 INFO L134 LiptonReduction]: Checked pairs total: 132397 [2023-08-26 15:39:54,106 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-08-26 15:39:54,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:39:54,108 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:39:54,108 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:39:54,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:39:54,123 INFO L124 PetriNetUnfolderBase]: 71/300 cut-off events. [2023-08-26 15:39:54,123 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-26 15:39:54,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:39:54,124 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:39:54,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:39:54,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:39:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1865990408, now seen corresponding path program 1 times [2023-08-26 15:39:54,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:39:54,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52683508] [2023-08-26 15:39:54,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:39:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:39:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:54,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:39:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:54,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:39:54,153 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:39:54,154 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:39:54,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:39:54,154 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:39:54,154 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:39:54,154 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:39:54,154 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-26 15:39:54,170 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-26 15:39:54,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 311 transitions, 720 flow [2023-08-26 15:39:54,522 INFO L124 PetriNetUnfolderBase]: 562/3090 cut-off events. [2023-08-26 15:39:54,522 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:39:54,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3588 conditions, 3090 events. 562/3090 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 21965 event pairs, 201 based on Foata normal form. 0/2440 useless extension candidates. Maximal degree in co-relation 1954. Up to 448 conditions per place. [2023-08-26 15:39:54,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 311 transitions, 720 flow [2023-08-26 15:39:54,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 311 transitions, 720 flow [2023-08-26 15:39:54,584 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:39:54,584 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 311 transitions, 720 flow [2023-08-26 15:39:54,584 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 311 transitions, 720 flow [2023-08-26 15:39:54,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 311 transitions, 720 flow [2023-08-26 15:39:54,919 INFO L124 PetriNetUnfolderBase]: 562/3090 cut-off events. [2023-08-26 15:39:54,919 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:39:54,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3588 conditions, 3090 events. 562/3090 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 21965 event pairs, 201 based on Foata normal form. 0/2440 useless extension candidates. Maximal degree in co-relation 1954. Up to 448 conditions per place. [2023-08-26 15:39:55,053 INFO L119 LiptonReduction]: Number of co-enabled transitions 60760 [2023-08-26 15:39:58,010 INFO L134 LiptonReduction]: Checked pairs total: 176815 [2023-08-26 15:39:58,011 INFO L136 LiptonReduction]: Total number of compositions: 208 [2023-08-26 15:39:58,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:39:58,012 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:39:58,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:39:58,035 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:39:58,035 INFO L124 PetriNetUnfolderBase]: 98/407 cut-off events. [2023-08-26 15:39:58,035 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-26 15:39:58,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:39:58,035 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:39:58,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:39:58,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:39:58,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1730045709, now seen corresponding path program 1 times [2023-08-26 15:39:58,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:39:58,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068901301] [2023-08-26 15:39:58,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:39:58,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:39:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:58,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:39:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:39:58,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:39:58,072 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:39:58,072 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:39:58,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:39:58,073 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:39:58,073 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:39:58,073 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:39:58,073 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-26 15:39:58,092 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-26 15:39:58,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 341 transitions, 802 flow [2023-08-26 15:39:58,977 INFO L124 PetriNetUnfolderBase]: 1153/5788 cut-off events. [2023-08-26 15:39:58,977 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:39:59,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6873 conditions, 5788 events. 1153/5788 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 48343 event pairs, 522 based on Foata normal form. 0/4608 useless extension candidates. Maximal degree in co-relation 3572. Up to 1024 conditions per place. [2023-08-26 15:39:59,023 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 341 transitions, 802 flow [2023-08-26 15:39:59,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 341 transitions, 802 flow [2023-08-26 15:39:59,062 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:39:59,062 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 293 places, 341 transitions, 802 flow [2023-08-26 15:39:59,062 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 293 places, 341 transitions, 802 flow [2023-08-26 15:39:59,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 341 transitions, 802 flow [2023-08-26 15:39:59,917 INFO L124 PetriNetUnfolderBase]: 1153/5788 cut-off events. [2023-08-26 15:39:59,917 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:39:59,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6873 conditions, 5788 events. 1153/5788 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 48343 event pairs, 522 based on Foata normal form. 0/4608 useless extension candidates. Maximal degree in co-relation 3572. Up to 1024 conditions per place. [2023-08-26 15:40:00,149 INFO L119 LiptonReduction]: Number of co-enabled transitions 76384 [2023-08-26 15:40:03,183 INFO L134 LiptonReduction]: Checked pairs total: 250233 [2023-08-26 15:40:03,183 INFO L136 LiptonReduction]: Total number of compositions: 223 [2023-08-26 15:40:03,184 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:40:03,185 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:40:03,185 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:40:03,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:40:03,217 INFO L124 PetriNetUnfolderBase]: 132/532 cut-off events. [2023-08-26 15:40:03,217 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-26 15:40:03,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:40:03,217 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:40:03,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:40:03,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:40:03,217 INFO L85 PathProgramCache]: Analyzing trace with hash 593597817, now seen corresponding path program 1 times [2023-08-26 15:40:03,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:40:03,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658735328] [2023-08-26 15:40:03,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:40:03,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:40:03,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:40:03,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:40:03,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:40:03,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:40:03,302 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:40:03,302 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:40:03,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:40:03,302 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:40:03,303 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:40:03,303 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:40:03,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-26 15:40:03,323 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 15:40:03,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 371 transitions, 886 flow [2023-08-26 15:40:05,125 INFO L124 PetriNetUnfolderBase]: 2448/11238 cut-off events. [2023-08-26 15:40:05,125 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:40:05,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13615 conditions, 11238 events. 2448/11238 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 109532 event pairs, 1291 based on Foata normal form. 0/9016 useless extension candidates. Maximal degree in co-relation 6855. Up to 2304 conditions per place. [2023-08-26 15:40:05,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 371 transitions, 886 flow [2023-08-26 15:40:05,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 371 transitions, 886 flow [2023-08-26 15:40:05,300 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:40:05,300 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 371 transitions, 886 flow [2023-08-26 15:40:05,300 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 371 transitions, 886 flow [2023-08-26 15:40:05,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 371 transitions, 886 flow [2023-08-26 15:40:07,169 INFO L124 PetriNetUnfolderBase]: 2448/11238 cut-off events. [2023-08-26 15:40:07,169 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:40:07,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13615 conditions, 11238 events. 2448/11238 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 109532 event pairs, 1291 based on Foata normal form. 0/9016 useless extension candidates. Maximal degree in co-relation 6855. Up to 2304 conditions per place. [2023-08-26 15:40:07,678 INFO L119 LiptonReduction]: Number of co-enabled transitions 93744 [2023-08-26 15:40:10,854 INFO L134 LiptonReduction]: Checked pairs total: 280421 [2023-08-26 15:40:10,854 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-08-26 15:40:10,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:40:10,855 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:40:10,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:40:10,900 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:40:10,900 INFO L124 PetriNetUnfolderBase]: 180/709 cut-off events. [2023-08-26 15:40:10,900 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-26 15:40:10,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:40:10,900 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:40:10,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:40:10,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:40:10,901 INFO L85 PathProgramCache]: Analyzing trace with hash -727682217, now seen corresponding path program 1 times [2023-08-26 15:40:10,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:40:10,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485038911] [2023-08-26 15:40:10,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:40:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:40:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:40:10,922 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:40:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:40:10,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:40:10,936 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:40:10,936 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:40:10,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:40:10,936 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:40:10,937 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:40:10,937 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:40:10,937 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-26 15:40:10,956 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-26 15:40:10,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 401 transitions, 972 flow [2023-08-26 15:40:15,519 INFO L124 PetriNetUnfolderBase]: 5279/22320 cut-off events. [2023-08-26 15:40:15,520 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:40:15,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27526 conditions, 22320 events. 5279/22320 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 246373 event pairs, 3084 based on Foata normal form. 0/18032 useless extension candidates. Maximal degree in co-relation 13595. Up to 5120 conditions per place. [2023-08-26 15:40:15,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 343 places, 401 transitions, 972 flow [2023-08-26 15:40:15,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 401 transitions, 972 flow [2023-08-26 15:40:15,896 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:40:15,896 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 343 places, 401 transitions, 972 flow [2023-08-26 15:40:15,897 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 343 places, 401 transitions, 972 flow [2023-08-26 15:40:15,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 343 places, 401 transitions, 972 flow [2023-08-26 15:40:19,827 INFO L124 PetriNetUnfolderBase]: 5279/22320 cut-off events. [2023-08-26 15:40:19,827 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:40:20,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27526 conditions, 22320 events. 5279/22320 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 246373 event pairs, 3084 based on Foata normal form. 0/18032 useless extension candidates. Maximal degree in co-relation 13595. Up to 5120 conditions per place. [2023-08-26 15:40:20,871 INFO L119 LiptonReduction]: Number of co-enabled transitions 112840 [2023-08-26 15:40:24,186 INFO L134 LiptonReduction]: Checked pairs total: 340188 [2023-08-26 15:40:24,186 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-08-26 15:40:24,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:40:24,188 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:40:24,188 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:40:24,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:40:24,274 INFO L124 PetriNetUnfolderBase]: 257/992 cut-off events. [2023-08-26 15:40:24,274 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-26 15:40:24,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:40:24,275 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:40:24,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:40:24,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:40:24,275 INFO L85 PathProgramCache]: Analyzing trace with hash -531545039, now seen corresponding path program 1 times [2023-08-26 15:40:24,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:40:24,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282448405] [2023-08-26 15:40:24,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:40:24,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:40:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:40:24,293 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:40:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:40:24,310 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:40:24,310 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:40:24,310 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:40:24,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 15:40:24,311 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:40:24,311 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:40:24,311 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:40:24,311 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-26 15:40:24,336 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-26 15:40:24,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 368 places, 431 transitions, 1060 flow [2023-08-26 15:40:33,085 INFO L124 PetriNetUnfolderBase]: 11438/44922 cut-off events. [2023-08-26 15:40:33,085 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:40:33,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56286 conditions, 44922 events. 11438/44922 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 552768 event pairs, 7181 based on Foata normal form. 0/36520 useless extension candidates. Maximal degree in co-relation 27504. Up to 11264 conditions per place. [2023-08-26 15:40:33,687 INFO L82 GeneralOperation]: Start removeDead. Operand has 368 places, 431 transitions, 1060 flow [2023-08-26 15:40:34,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 368 places, 431 transitions, 1060 flow [2023-08-26 15:40:34,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:40:34,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 368 places, 431 transitions, 1060 flow [2023-08-26 15:40:34,254 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 368 places, 431 transitions, 1060 flow [2023-08-26 15:40:34,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 368 places, 431 transitions, 1060 flow [2023-08-26 15:40:43,188 INFO L124 PetriNetUnfolderBase]: 11438/44922 cut-off events. [2023-08-26 15:40:43,188 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:40:43,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56286 conditions, 44922 events. 11438/44922 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 552768 event pairs, 7181 based on Foata normal form. 0/36520 useless extension candidates. Maximal degree in co-relation 27504. Up to 11264 conditions per place. [2023-08-26 15:40:45,693 INFO L119 LiptonReduction]: Number of co-enabled transitions 133672 [2023-08-26 15:40:49,068 INFO L134 LiptonReduction]: Checked pairs total: 453253 [2023-08-26 15:40:49,068 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-08-26 15:40:49,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:40:49,069 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:40:49,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:40:49,182 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:40:49,182 INFO L124 PetriNetUnfolderBase]: 374/1361 cut-off events. [2023-08-26 15:40:49,182 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-26 15:40:49,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:40:49,182 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:40:49,182 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:40:49,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:40:49,182 INFO L85 PathProgramCache]: Analyzing trace with hash 821519541, now seen corresponding path program 1 times [2023-08-26 15:40:49,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:40:49,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642792917] [2023-08-26 15:40:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:40:49,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:40:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:40:49,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:40:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:40:49,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:40:49,219 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:40:49,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:40:49,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 15:40:49,219 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:40:49,220 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:40:49,220 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:40:49,220 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-26 15:40:49,238 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-26 15:40:49,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 461 transitions, 1150 flow [2023-08-26 15:41:08,826 INFO L124 PetriNetUnfolderBase]: 24765/91076 cut-off events. [2023-08-26 15:41:08,826 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:41:11,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115767 conditions, 91076 events. 24765/91076 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 1228918 event pairs, 16398 based on Foata normal form. 0/74464 useless extension candidates. Maximal degree in co-relation 56262. Up to 24576 conditions per place. [2023-08-26 15:41:11,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 461 transitions, 1150 flow [2023-08-26 15:41:12,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 393 places, 461 transitions, 1150 flow [2023-08-26 15:41:12,449 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:41:12,449 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 393 places, 461 transitions, 1150 flow [2023-08-26 15:41:12,449 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 393 places, 461 transitions, 1150 flow [2023-08-26 15:41:12,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 461 transitions, 1150 flow [2023-08-26 15:41:32,552 INFO L124 PetriNetUnfolderBase]: 24765/91076 cut-off events. [2023-08-26 15:41:32,552 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:41:34,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115767 conditions, 91076 events. 24765/91076 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 1228918 event pairs, 16398 based on Foata normal form. 0/74464 useless extension candidates. Maximal degree in co-relation 56262. Up to 24576 conditions per place. [2023-08-26 15:41:39,110 INFO L119 LiptonReduction]: Number of co-enabled transitions 156240 [2023-08-26 15:41:42,557 INFO L134 LiptonReduction]: Checked pairs total: 529144 [2023-08-26 15:41:42,557 INFO L136 LiptonReduction]: Total number of compositions: 283 [2023-08-26 15:41:42,558 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:41:42,558 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:41:42,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:41:42,720 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:41:42,721 INFO L124 PetriNetUnfolderBase]: 599/2031 cut-off events. [2023-08-26 15:41:42,721 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-26 15:41:42,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:41:42,721 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 15:41:42,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:41:42,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:41:42,721 INFO L85 PathProgramCache]: Analyzing trace with hash 659718986, now seen corresponding path program 1 times [2023-08-26 15:41:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:41:42,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072433806] [2023-08-26 15:41:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:41:42,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:41:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:41:42,738 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:41:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:41:42,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:41:42,754 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:41:42,754 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:41:42,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 15:41:42,755 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:41:42,755 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:41:42,755 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:41:42,755 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-26 15:41:42,777 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-26 15:41:42,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 491 transitions, 1242 flow [2023-08-26 15:42:26,870 INFO L124 PetriNetUnfolderBase]: 53452/185358 cut-off events. [2023-08-26 15:42:26,870 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:42:33,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238737 conditions, 185358 events. 53452/185358 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4092. Compared 2718646 event pairs, 36879 based on Foata normal form. 0/152344 useless extension candidates. Maximal degree in co-relation 115741. Up to 53248 conditions per place. [2023-08-26 15:42:33,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 418 places, 491 transitions, 1242 flow [2023-08-26 15:42:37,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 418 places, 491 transitions, 1242 flow [2023-08-26 15:42:37,228 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:42:37,228 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 418 places, 491 transitions, 1242 flow [2023-08-26 15:42:37,229 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 418 places, 491 transitions, 1242 flow [2023-08-26 15:42:37,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 418 places, 491 transitions, 1242 flow [2023-08-26 15:43:21,561 INFO L124 PetriNetUnfolderBase]: 53452/185358 cut-off events. [2023-08-26 15:43:21,561 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:43:27,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238737 conditions, 185358 events. 53452/185358 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4092. Compared 2718646 event pairs, 36879 based on Foata normal form. 0/152344 useless extension candidates. Maximal degree in co-relation 115741. Up to 53248 conditions per place. [2023-08-26 15:43:43,362 INFO L119 LiptonReduction]: Number of co-enabled transitions 180544 [2023-08-26 15:43:46,725 INFO L134 LiptonReduction]: Checked pairs total: 557156 [2023-08-26 15:43:46,725 INFO L136 LiptonReduction]: Total number of compositions: 294 [2023-08-26 15:43:46,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:43:46,729 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;@7bd70d2e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:43:46,729 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:43:46,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:43:46,996 INFO L124 PetriNetUnfolderBase]: 955/3042 cut-off events. [2023-08-26 15:43:46,996 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2023-08-26 15:43:46,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:43:46,996 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 15:43:46,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:43:46,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:43:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash 133186611, now seen corresponding path program 1 times [2023-08-26 15:43:46,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:43:46,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530255138] [2023-08-26 15:43:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:43:46,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:43:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:43:47,013 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:43:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:43:47,031 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:43:47,031 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:43:47,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:43:47,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 15:43:47,031 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:43:47,032 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:43:47,032 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:43:47,032 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-26 15:43:47,057 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-26 15:43:47,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 521 transitions, 1336 flow