/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_37-indirect_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:51:22,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:51:22,762 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 15:51:22,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:51:22,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:51:22,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:51:22,789 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:51:22,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:51:22,790 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:51:22,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:51:22,792 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:51:22,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:51:22,792 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:51:22,793 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:51:22,793 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:51:22,793 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:51:22,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:51:22,793 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:51:22,794 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:51:22,794 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:51:22,794 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:51:22,794 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:51:22,794 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:51:22,795 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:51:22,795 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:51:22,795 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:51:22,795 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:51:22,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:51:22,795 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:51:22,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:51:22,796 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:51:22,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:51:22,797 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:51:22,797 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:51:22,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:51:22,797 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:51:23,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:51:23,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:51:23,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:51:23,069 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:51:23,069 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:51:23,070 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-26 15:51:24,031 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:51:24,254 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:51:24,254 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-08-26 15:51:24,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d2e0160/48fc2cdc362f4b1dbf8371d8a94af2d6/FLAG80987059c [2023-08-26 15:51:24,276 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9d2e0160/48fc2cdc362f4b1dbf8371d8a94af2d6 [2023-08-26 15:51:24,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:51:24,279 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:51:24,279 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:51:24,280 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:51:24,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:51:24,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e4b1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24, skipping insertion in model container [2023-08-26 15:51:24,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,316 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:51:24,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:51:24,516 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:51:24,539 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:51:24,540 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:51:24,550 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:51:24,575 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:51:24,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24 WrapperNode [2023-08-26 15:51:24,575 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:51:24,576 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:51:24,576 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:51:24,576 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:51:24,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,593 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,609 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2023-08-26 15:51:24,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:51:24,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:51:24,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:51:24,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:51:24,615 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,615 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,621 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,625 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:51:24,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:51:24,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:51:24,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:51:24,628 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (1/1) ... [2023-08-26 15:51:24,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:51:24,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:51:24,655 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 15:51:24,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 15:51:24,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:51:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:51:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:51:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:51:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:51:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 15:51:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 15:51:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:51:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:51:24,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:51:24,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:51:24,684 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 15:51:24,775 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:51:24,776 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:51:24,942 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:51:24,947 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:51:24,947 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 15:51:24,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:51:24 BoogieIcfgContainer [2023-08-26 15:51:24,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:51:24,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:51:24,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:51:24,952 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:51:24,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:51:24" (1/3) ... [2023-08-26 15:51:24,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae9e19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:51:24, skipping insertion in model container [2023-08-26 15:51:24,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:51:24" (2/3) ... [2023-08-26 15:51:24,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ae9e19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:51:24, skipping insertion in model container [2023-08-26 15:51:24,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:51:24" (3/3) ... [2023-08-26 15:51:24,953 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-08-26 15:51:24,965 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:51:24,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-26 15:51:24,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:51:25,036 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 15:51:25,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 128 transitions, 264 flow [2023-08-26 15:51:25,146 INFO L124 PetriNetUnfolderBase]: 19/172 cut-off events. [2023-08-26 15:51:25,146 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:51:25,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 172 events. 19/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 527 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-26 15:51:25,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 128 transitions, 264 flow [2023-08-26 15:51:25,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 123 transitions, 251 flow [2023-08-26 15:51:25,160 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:25,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 123 transitions, 251 flow [2023-08-26 15:51:25,175 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 123 transitions, 251 flow [2023-08-26 15:51:25,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 123 transitions, 251 flow [2023-08-26 15:51:25,212 INFO L124 PetriNetUnfolderBase]: 18/167 cut-off events. [2023-08-26 15:51:25,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:51:25,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 167 events. 18/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 502 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-26 15:51:25,215 INFO L119 LiptonReduction]: Number of co-enabled transitions 4000 [2023-08-26 15:51:28,010 INFO L134 LiptonReduction]: Checked pairs total: 7670 [2023-08-26 15:51:28,010 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-26 15:51:28,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:28,022 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:28,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:28,026 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:28,026 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2023-08-26 15:51:28,026 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:51:28,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:28,027 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 15:51:28,027 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:28,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:28,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1774948461, now seen corresponding path program 1 times [2023-08-26 15:51:28,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:28,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656029828] [2023-08-26 15:51:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:28,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:28,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:28,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:28,160 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:28,161 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:28,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:51:28,162 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:28,170 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:28,170 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:28,171 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 15:51:28,197 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 15:51:28,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 170 transitions, 358 flow [2023-08-26 15:51:28,223 INFO L124 PetriNetUnfolderBase]: 34/285 cut-off events. [2023-08-26 15:51:28,223 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:51:28,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 285 events. 34/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1032 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2023-08-26 15:51:28,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 170 transitions, 358 flow [2023-08-26 15:51:28,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 170 transitions, 358 flow [2023-08-26 15:51:28,226 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:28,226 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 170 transitions, 358 flow [2023-08-26 15:51:28,227 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 170 transitions, 358 flow [2023-08-26 15:51:28,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 170 transitions, 358 flow [2023-08-26 15:51:28,247 INFO L124 PetriNetUnfolderBase]: 34/285 cut-off events. [2023-08-26 15:51:28,247 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:51:28,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 285 events. 34/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1032 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2023-08-26 15:51:28,254 INFO L119 LiptonReduction]: Number of co-enabled transitions 12080 [2023-08-26 15:51:31,144 INFO L134 LiptonReduction]: Checked pairs total: 29769 [2023-08-26 15:51:31,145 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-26 15:51:31,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:31,147 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:31,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:31,152 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:31,152 INFO L124 PetriNetUnfolderBase]: 12/83 cut-off events. [2023-08-26 15:51:31,152 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 15:51:31,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:31,152 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 15:51:31,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:31,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:31,153 INFO L85 PathProgramCache]: Analyzing trace with hash 939447633, now seen corresponding path program 1 times [2023-08-26 15:51:31,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:31,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888362142] [2023-08-26 15:51:31,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:31,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:31,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:31,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:31,224 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:31,225 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:31,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:51:31,225 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:31,225 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:31,225 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:31,226 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 15:51:31,241 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 15:51:31,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 212 transitions, 454 flow [2023-08-26 15:51:31,277 INFO L124 PetriNetUnfolderBase]: 54/435 cut-off events. [2023-08-26 15:51:31,277 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:51:31,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 435 events. 54/435 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1720 event pairs, 1 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 293. Up to 16 conditions per place. [2023-08-26 15:51:31,280 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 212 transitions, 454 flow [2023-08-26 15:51:31,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 212 transitions, 454 flow [2023-08-26 15:51:31,282 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:31,282 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 212 transitions, 454 flow [2023-08-26 15:51:31,283 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 212 transitions, 454 flow [2023-08-26 15:51:31,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 212 transitions, 454 flow [2023-08-26 15:51:31,314 INFO L124 PetriNetUnfolderBase]: 54/435 cut-off events. [2023-08-26 15:51:31,315 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:51:31,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 435 events. 54/435 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1720 event pairs, 1 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 293. Up to 16 conditions per place. [2023-08-26 15:51:31,329 INFO L119 LiptonReduction]: Number of co-enabled transitions 23280 [2023-08-26 15:51:34,458 INFO L134 LiptonReduction]: Checked pairs total: 69027 [2023-08-26 15:51:34,458 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-08-26 15:51:34,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:34,463 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:34,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:34,473 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:34,473 INFO L124 PetriNetUnfolderBase]: 24/135 cut-off events. [2023-08-26 15:51:34,473 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 15:51:34,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:34,474 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 15:51:34,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:34,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:34,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1303916847, now seen corresponding path program 1 times [2023-08-26 15:51:34,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:34,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237430466] [2023-08-26 15:51:34,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:34,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:34,509 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:34,526 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:34,526 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:34,527 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:34,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:51:34,527 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:34,527 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:34,527 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:34,527 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 15:51:34,559 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 15:51:34,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 254 transitions, 552 flow [2023-08-26 15:51:34,631 INFO L124 PetriNetUnfolderBase]: 86/661 cut-off events. [2023-08-26 15:51:34,632 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:51:34,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 661 events. 86/661 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2892 event pairs, 6 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 455. Up to 32 conditions per place. [2023-08-26 15:51:34,638 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 254 transitions, 552 flow [2023-08-26 15:51:34,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 254 transitions, 552 flow [2023-08-26 15:51:34,645 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:34,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 254 transitions, 552 flow [2023-08-26 15:51:34,646 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 254 transitions, 552 flow [2023-08-26 15:51:34,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 254 transitions, 552 flow [2023-08-26 15:51:34,702 INFO L124 PetriNetUnfolderBase]: 86/661 cut-off events. [2023-08-26 15:51:34,702 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:51:34,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 661 events. 86/661 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2892 event pairs, 6 based on Foata normal form. 0/486 useless extension candidates. Maximal degree in co-relation 455. Up to 32 conditions per place. [2023-08-26 15:51:34,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 37920 [2023-08-26 15:51:38,057 INFO L134 LiptonReduction]: Checked pairs total: 110360 [2023-08-26 15:51:38,057 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-08-26 15:51:38,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:38,059 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:38,059 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:38,070 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:38,070 INFO L124 PetriNetUnfolderBase]: 35/191 cut-off events. [2023-08-26 15:51:38,070 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-26 15:51:38,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:38,070 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-26 15:51:38,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:38,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:38,071 INFO L85 PathProgramCache]: Analyzing trace with hash -292947615, now seen corresponding path program 1 times [2023-08-26 15:51:38,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:38,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916924776] [2023-08-26 15:51:38,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:38,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:38,102 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:38,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:38,116 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:38,116 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:38,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:51:38,116 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:38,117 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:38,117 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:38,117 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-26 15:51:38,132 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-26 15:51:38,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 296 transitions, 652 flow [2023-08-26 15:51:38,255 INFO L124 PetriNetUnfolderBase]: 146/1043 cut-off events. [2023-08-26 15:51:38,255 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:51:38,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 1043 events. 146/1043 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5264 event pairs, 23 based on Foata normal form. 0/779 useless extension candidates. Maximal degree in co-relation 706. Up to 80 conditions per place. [2023-08-26 15:51:38,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 296 transitions, 652 flow [2023-08-26 15:51:38,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 296 transitions, 652 flow [2023-08-26 15:51:38,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:38,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 296 transitions, 652 flow [2023-08-26 15:51:38,272 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 296 transitions, 652 flow [2023-08-26 15:51:38,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 296 transitions, 652 flow [2023-08-26 15:51:38,396 INFO L124 PetriNetUnfolderBase]: 146/1043 cut-off events. [2023-08-26 15:51:38,397 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:51:38,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 1043 events. 146/1043 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5264 event pairs, 23 based on Foata normal form. 0/779 useless extension candidates. Maximal degree in co-relation 706. Up to 80 conditions per place. [2023-08-26 15:51:38,429 INFO L119 LiptonReduction]: Number of co-enabled transitions 56000 [2023-08-26 15:51:41,888 INFO L134 LiptonReduction]: Checked pairs total: 167656 [2023-08-26 15:51:41,888 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-08-26 15:51:41,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:41,890 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:41,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:41,905 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:41,905 INFO L124 PetriNetUnfolderBase]: 43/252 cut-off events. [2023-08-26 15:51:41,905 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 15:51:41,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:41,906 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:51:41,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:41,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:41,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1755343778, now seen corresponding path program 1 times [2023-08-26 15:51:41,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:41,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405241704] [2023-08-26 15:51:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:41,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:41,941 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:41,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:41,968 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:41,969 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:41,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:51:41,969 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:41,969 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:41,969 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:41,969 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-26 15:51:41,999 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-26 15:51:42,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 338 transitions, 754 flow [2023-08-26 15:51:42,244 INFO L124 PetriNetUnfolderBase]: 270/1745 cut-off events. [2023-08-26 15:51:42,244 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:51:42,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 1745 events. 270/1745 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10545 event pairs, 72 based on Foata normal form. 0/1328 useless extension candidates. Maximal degree in co-relation 1142. Up to 192 conditions per place. [2023-08-26 15:51:42,255 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 338 transitions, 754 flow [2023-08-26 15:51:42,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 303 places, 338 transitions, 754 flow [2023-08-26 15:51:42,267 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:42,267 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 303 places, 338 transitions, 754 flow [2023-08-26 15:51:42,267 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 303 places, 338 transitions, 754 flow [2023-08-26 15:51:42,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 338 transitions, 754 flow [2023-08-26 15:51:42,503 INFO L124 PetriNetUnfolderBase]: 270/1745 cut-off events. [2023-08-26 15:51:42,503 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:51:42,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1977 conditions, 1745 events. 270/1745 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10545 event pairs, 72 based on Foata normal form. 0/1328 useless extension candidates. Maximal degree in co-relation 1142. Up to 192 conditions per place. [2023-08-26 15:51:42,582 INFO L119 LiptonReduction]: Number of co-enabled transitions 77520 [2023-08-26 15:51:46,433 INFO L134 LiptonReduction]: Checked pairs total: 238277 [2023-08-26 15:51:46,433 INFO L136 LiptonReduction]: Total number of compositions: 264 [2023-08-26 15:51:46,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:46,434 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:46,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:46,455 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:46,455 INFO L124 PetriNetUnfolderBase]: 64/335 cut-off events. [2023-08-26 15:51:46,455 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-26 15:51:46,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:46,455 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:51:46,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:46,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash -964652779, now seen corresponding path program 1 times [2023-08-26 15:51:46,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:46,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352152316] [2023-08-26 15:51:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:46,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:46,488 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:46,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:46,517 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:46,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:46,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:51:46,518 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:46,518 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:46,518 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:46,518 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-26 15:51:46,548 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-26 15:51:46,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 380 transitions, 858 flow [2023-08-26 15:51:46,954 INFO L124 PetriNetUnfolderBase]: 538/3103 cut-off events. [2023-08-26 15:51:46,954 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:51:46,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3601 conditions, 3103 events. 538/3103 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 22346 event pairs, 201 based on Foata normal form. 0/2405 useless extension candidates. Maximal degree in co-relation 1963. Up to 448 conditions per place. [2023-08-26 15:51:46,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 380 transitions, 858 flow [2023-08-26 15:51:47,017 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 380 transitions, 858 flow [2023-08-26 15:51:47,019 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:47,019 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 380 transitions, 858 flow [2023-08-26 15:51:47,019 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 380 transitions, 858 flow [2023-08-26 15:51:47,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 380 transitions, 858 flow [2023-08-26 15:51:47,404 INFO L124 PetriNetUnfolderBase]: 538/3103 cut-off events. [2023-08-26 15:51:47,404 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:51:47,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3601 conditions, 3103 events. 538/3103 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 22346 event pairs, 201 based on Foata normal form. 0/2405 useless extension candidates. Maximal degree in co-relation 1963. Up to 448 conditions per place. [2023-08-26 15:51:47,542 INFO L119 LiptonReduction]: Number of co-enabled transitions 102480 [2023-08-26 15:51:51,639 INFO L134 LiptonReduction]: Checked pairs total: 321694 [2023-08-26 15:51:51,639 INFO L136 LiptonReduction]: Total number of compositions: 296 [2023-08-26 15:51:51,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:51,641 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:51,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:51,670 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:51,670 INFO L124 PetriNetUnfolderBase]: 85/437 cut-off events. [2023-08-26 15:51:51,670 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-26 15:51:51,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:51,670 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:51:51,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:51,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:51,671 INFO L85 PathProgramCache]: Analyzing trace with hash 91965543, now seen corresponding path program 1 times [2023-08-26 15:51:51,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:51,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587406599] [2023-08-26 15:51:51,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:51,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:51,685 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:51,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:51,698 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:51,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:51,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:51:51,698 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:51,699 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:51,699 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:51,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-26 15:51:51,720 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-26 15:51:51,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 422 transitions, 964 flow [2023-08-26 15:51:52,813 INFO L124 PetriNetUnfolderBase]: 1126/5805 cut-off events. [2023-08-26 15:51:52,813 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:51:52,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6890 conditions, 5805 events. 1126/5805 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49107 event pairs, 522 based on Foata normal form. 0/4570 useless extension candidates. Maximal degree in co-relation 3585. Up to 1024 conditions per place. [2023-08-26 15:51:52,887 INFO L82 GeneralOperation]: Start removeDead. Operand has 377 places, 422 transitions, 964 flow [2023-08-26 15:51:52,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 377 places, 422 transitions, 964 flow [2023-08-26 15:51:52,927 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:51:52,927 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 377 places, 422 transitions, 964 flow [2023-08-26 15:51:52,927 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 377 places, 422 transitions, 964 flow [2023-08-26 15:51:52,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 377 places, 422 transitions, 964 flow [2023-08-26 15:51:53,923 INFO L124 PetriNetUnfolderBase]: 1126/5805 cut-off events. [2023-08-26 15:51:53,923 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:51:53,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6890 conditions, 5805 events. 1126/5805 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 49107 event pairs, 522 based on Foata normal form. 0/4570 useless extension candidates. Maximal degree in co-relation 3585. Up to 1024 conditions per place. [2023-08-26 15:51:54,183 INFO L119 LiptonReduction]: Number of co-enabled transitions 130880 [2023-08-26 15:51:58,805 INFO L134 LiptonReduction]: Checked pairs total: 417640 [2023-08-26 15:51:58,805 INFO L136 LiptonReduction]: Total number of compositions: 327 [2023-08-26 15:51:58,806 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:51:58,807 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:51:58,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:51:58,846 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:51:58,846 INFO L124 PetriNetUnfolderBase]: 107/564 cut-off events. [2023-08-26 15:51:58,846 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-26 15:51:58,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:51:58,846 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:51:58,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:51:58,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:51:58,847 INFO L85 PathProgramCache]: Analyzing trace with hash 975134100, now seen corresponding path program 1 times [2023-08-26 15:51:58,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:51:58,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668816259] [2023-08-26 15:51:58,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:51:58,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:51:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:58,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:51:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:51:58,876 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:51:58,876 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:51:58,876 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:51:58,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:51:58,877 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:51:58,877 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:51:58,877 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:51:58,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-26 15:51:58,900 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 15:51:58,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 464 transitions, 1072 flow [2023-08-26 15:52:01,142 INFO L124 PetriNetUnfolderBase]: 2418/11259 cut-off events. [2023-08-26 15:52:01,142 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:52:01,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13636 conditions, 11259 events. 2418/11259 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 109986 event pairs, 1291 based on Foata normal form. 0/8975 useless extension candidates. Maximal degree in co-relation 6872. Up to 2304 conditions per place. [2023-08-26 15:52:01,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 414 places, 464 transitions, 1072 flow [2023-08-26 15:52:01,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 414 places, 464 transitions, 1072 flow [2023-08-26 15:52:01,350 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:52:01,350 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 464 transitions, 1072 flow [2023-08-26 15:52:01,350 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 464 transitions, 1072 flow [2023-08-26 15:52:01,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 464 transitions, 1072 flow [2023-08-26 15:52:03,398 INFO L124 PetriNetUnfolderBase]: 2418/11259 cut-off events. [2023-08-26 15:52:03,398 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:52:03,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13636 conditions, 11259 events. 2418/11259 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 109986 event pairs, 1291 based on Foata normal form. 0/8975 useless extension candidates. Maximal degree in co-relation 6872. Up to 2304 conditions per place. [2023-08-26 15:52:04,047 INFO L119 LiptonReduction]: Number of co-enabled transitions 162720 [2023-08-26 15:52:08,714 INFO L134 LiptonReduction]: Checked pairs total: 522787 [2023-08-26 15:52:08,714 INFO L136 LiptonReduction]: Total number of compositions: 359 [2023-08-26 15:52:08,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:52:08,716 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:52:08,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:52:08,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:52:08,835 INFO L124 PetriNetUnfolderBase]: 161/759 cut-off events. [2023-08-26 15:52:08,835 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-26 15:52:08,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:52:08,835 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:52:08,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:52:08,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:52:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1928758798, now seen corresponding path program 1 times [2023-08-26 15:52:08,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:52:08,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77155581] [2023-08-26 15:52:08,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:52:08,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:52:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:08,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:52:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:08,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:52:08,883 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:52:08,883 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:52:08,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:52:08,884 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:52:08,887 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:52:08,887 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:52:08,887 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-26 15:52:08,915 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-26 15:52:08,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 451 places, 506 transitions, 1182 flow [2023-08-26 15:52:13,776 INFO L124 PetriNetUnfolderBase]: 5246/22345 cut-off events. [2023-08-26 15:52:13,776 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:52:14,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27551 conditions, 22345 events. 5246/22345 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 250212 event pairs, 3084 based on Foata normal form. 0/17988 useless extension candidates. Maximal degree in co-relation 13616. Up to 5120 conditions per place. [2023-08-26 15:52:14,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 451 places, 506 transitions, 1182 flow [2023-08-26 15:52:14,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 451 places, 506 transitions, 1182 flow [2023-08-26 15:52:14,258 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:52:14,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 451 places, 506 transitions, 1182 flow [2023-08-26 15:52:14,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 451 places, 506 transitions, 1182 flow [2023-08-26 15:52:14,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 451 places, 506 transitions, 1182 flow [2023-08-26 15:52:18,846 INFO L124 PetriNetUnfolderBase]: 5246/22345 cut-off events. [2023-08-26 15:52:18,846 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:52:19,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27551 conditions, 22345 events. 5246/22345 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 250212 event pairs, 3084 based on Foata normal form. 0/17988 useless extension candidates. Maximal degree in co-relation 13616. Up to 5120 conditions per place. [2023-08-26 15:52:20,398 INFO L119 LiptonReduction]: Number of co-enabled transitions 198000 [2023-08-26 15:52:25,364 INFO L134 LiptonReduction]: Checked pairs total: 634257 [2023-08-26 15:52:25,364 INFO L136 LiptonReduction]: Total number of compositions: 379 [2023-08-26 15:52:25,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:52:25,366 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:52:25,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:52:25,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:52:25,472 INFO L124 PetriNetUnfolderBase]: 226/1023 cut-off events. [2023-08-26 15:52:25,472 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-26 15:52:25,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:52:25,473 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:52:25,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:52:25,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:52:25,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1085049096, now seen corresponding path program 1 times [2023-08-26 15:52:25,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:52:25,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463822032] [2023-08-26 15:52:25,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:52:25,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:52:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:25,498 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:52:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:25,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:52:25,511 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:52:25,511 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:52:25,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 15:52:25,511 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:52:25,512 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:52:25,512 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:52:25,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-26 15:52:25,540 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-26 15:52:25,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 488 places, 548 transitions, 1294 flow [2023-08-26 15:52:35,966 INFO L124 PetriNetUnfolderBase]: 11402/44951 cut-off events. [2023-08-26 15:52:35,966 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:52:36,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56315 conditions, 44951 events. 11402/44951 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 560637 event pairs, 7181 based on Foata normal form. 0/36473 useless extension candidates. Maximal degree in co-relation 27529. Up to 11264 conditions per place. [2023-08-26 15:52:36,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 488 places, 548 transitions, 1294 flow [2023-08-26 15:52:37,418 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 488 places, 548 transitions, 1294 flow [2023-08-26 15:52:37,419 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:52:37,419 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 488 places, 548 transitions, 1294 flow [2023-08-26 15:52:37,419 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 488 places, 548 transitions, 1294 flow [2023-08-26 15:52:37,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 488 places, 548 transitions, 1294 flow [2023-08-26 15:52:47,905 INFO L124 PetriNetUnfolderBase]: 11402/44951 cut-off events. [2023-08-26 15:52:47,905 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:52:48,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56315 conditions, 44951 events. 11402/44951 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 560637 event pairs, 7181 based on Foata normal form. 0/36473 useless extension candidates. Maximal degree in co-relation 27529. Up to 11264 conditions per place. [2023-08-26 15:52:51,066 INFO L119 LiptonReduction]: Number of co-enabled transitions 236720 [2023-08-26 15:52:56,348 INFO L134 LiptonReduction]: Checked pairs total: 767426 [2023-08-26 15:52:56,348 INFO L136 LiptonReduction]: Total number of compositions: 410 [2023-08-26 15:52:56,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:52:56,349 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:52:56,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:52:56,487 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:52:56,487 INFO L124 PetriNetUnfolderBase]: 362/1460 cut-off events. [2023-08-26 15:52:56,487 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-26 15:52:56,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:52:56,487 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:52:56,487 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:52:56,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:52:56,487 INFO L85 PathProgramCache]: Analyzing trace with hash -482223104, now seen corresponding path program 1 times [2023-08-26 15:52:56,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:52:56,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791702744] [2023-08-26 15:52:56,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:52:56,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:52:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:56,504 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:52:56,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:52:56,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:52:56,518 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:52:56,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:52:56,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 15:52:56,519 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:52:56,519 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:52:56,519 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:52:56,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-26 15:52:56,549 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-26 15:52:56,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 590 transitions, 1408 flow [2023-08-26 15:53:20,883 INFO L124 PetriNetUnfolderBase]: 24726/91109 cut-off events. [2023-08-26 15:53:20,883 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:53:24,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115800 conditions, 91109 events. 24726/91109 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 1230107 event pairs, 16398 based on Foata normal form. 0/74414 useless extension candidates. Maximal degree in co-relation 56291. Up to 24576 conditions per place. [2023-08-26 15:53:24,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 525 places, 590 transitions, 1408 flow [2023-08-26 15:53:25,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 525 places, 590 transitions, 1408 flow [2023-08-26 15:53:25,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:53:25,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 525 places, 590 transitions, 1408 flow [2023-08-26 15:53:25,572 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 525 places, 590 transitions, 1408 flow [2023-08-26 15:53:25,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 525 places, 590 transitions, 1408 flow [2023-08-26 15:53:48,171 INFO L124 PetriNetUnfolderBase]: 24726/91109 cut-off events. [2023-08-26 15:53:48,171 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:53:51,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115800 conditions, 91109 events. 24726/91109 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2111. Compared 1230107 event pairs, 16398 based on Foata normal form. 0/74414 useless extension candidates. Maximal degree in co-relation 56291. Up to 24576 conditions per place. [2023-08-26 15:53:56,768 INFO L119 LiptonReduction]: Number of co-enabled transitions 278880 [2023-08-26 15:54:02,180 INFO L134 LiptonReduction]: Checked pairs total: 915113 [2023-08-26 15:54:02,180 INFO L136 LiptonReduction]: Total number of compositions: 439 [2023-08-26 15:54:02,181 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:54:02,181 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:54:02,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:54:02,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:54:02,395 INFO L124 PetriNetUnfolderBase]: 572/2109 cut-off events. [2023-08-26 15:54:02,395 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-26 15:54:02,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:54:02,395 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:54:02,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:54:02,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:54:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash 192983550, now seen corresponding path program 1 times [2023-08-26 15:54:02,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:54:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727770246] [2023-08-26 15:54:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:54:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:54:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:54:02,411 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:54:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:54:02,426 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:54:02,426 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:54:02,426 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:54:02,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 15:54:02,427 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:54:02,427 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:54:02,427 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:54:02,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-26 15:54:02,459 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-26 15:54:02,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 562 places, 632 transitions, 1524 flow [2023-08-26 15:54:54,388 INFO L124 PetriNetUnfolderBase]: 53410/185395 cut-off events. [2023-08-26 15:54:54,388 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:55:02,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238774 conditions, 185395 events. 53410/185395 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 2712780 event pairs, 36879 based on Foata normal form. 0/152291 useless extension candidates. Maximal degree in co-relation 115774. Up to 53248 conditions per place. [2023-08-26 15:55:02,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 562 places, 632 transitions, 1524 flow [2023-08-26 15:55:06,482 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 562 places, 632 transitions, 1524 flow [2023-08-26 15:55:06,482 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:55:06,482 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 562 places, 632 transitions, 1524 flow [2023-08-26 15:55:06,482 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 562 places, 632 transitions, 1524 flow [2023-08-26 15:55:06,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 562 places, 632 transitions, 1524 flow [2023-08-26 15:55:57,543 INFO L124 PetriNetUnfolderBase]: 53410/185395 cut-off events. [2023-08-26 15:55:57,543 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:56:06,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238774 conditions, 185395 events. 53410/185395 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4089. Compared 2712780 event pairs, 36879 based on Foata normal form. 0/152291 useless extension candidates. Maximal degree in co-relation 115774. Up to 53248 conditions per place. [2023-08-26 15:56:27,232 INFO L119 LiptonReduction]: Number of co-enabled transitions 324480 [2023-08-26 15:56:33,343 INFO L134 LiptonReduction]: Checked pairs total: 1076105 [2023-08-26 15:56:33,343 INFO L136 LiptonReduction]: Total number of compositions: 501 [2023-08-26 15:56:33,353 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:56:33,355 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;@24d00a8c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:56:33,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:56:33,717 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:56:33,717 INFO L124 PetriNetUnfolderBase]: 913/3069 cut-off events. [2023-08-26 15:56:33,717 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2023-08-26 15:56:33,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:56:33,717 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 15:56:33,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:56:33,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:56:33,718 INFO L85 PathProgramCache]: Analyzing trace with hash -817632782, now seen corresponding path program 1 times [2023-08-26 15:56:33,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:56:33,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682236118] [2023-08-26 15:56:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:56:33,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:56:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:56:33,742 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:56:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:56:33,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:56:33,758 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:56:33,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:56:33,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 15:56:33,758 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:56:33,758 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:56:33,758 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:56:33,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-26 15:56:33,787 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-26 15:56:33,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 599 places, 674 transitions, 1642 flow