/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_11-ptr_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:41:35,862 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:41:35,946 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 15:41:35,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:41:35,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:41:35,976 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:41:35,977 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:41:35,977 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:41:35,978 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:41:35,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:41:35,981 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:41:35,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:41:35,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:41:35,983 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:41:35,983 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:41:35,983 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:41:35,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:41:35,984 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:41:35,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:41:35,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:41:35,984 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:41:35,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:41:35,985 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:41:35,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:41:35,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:41:35,986 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:41:35,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:41:35,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:41:35,986 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:41:35,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:41:35,988 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:41:35,988 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:41:35,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:41:35,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:41:35,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:41:35,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:41:36,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:41:36,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:41:36,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:41:36,302 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:41:36,303 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:41:36,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-26 15:41:37,545 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:41:37,838 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:41:37,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-08-26 15:41:37,858 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a4ead42/7c38f7881f3144f4a95b928943c22784/FLAG70fad26e6 [2023-08-26 15:41:37,873 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14a4ead42/7c38f7881f3144f4a95b928943c22784 [2023-08-26 15:41:37,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:41:37,879 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:41:37,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:41:37,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:41:37,886 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:41:37,887 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:41:37" (1/1) ... [2023-08-26 15:41:37,887 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e13bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:37, skipping insertion in model container [2023-08-26 15:41:37,888 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:41:37" (1/1) ... [2023-08-26 15:41:37,933 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:41:38,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:41:38,267 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:41:38,295 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:41:38,297 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:41:38,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:41:38,357 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:41:38,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38 WrapperNode [2023-08-26 15:41:38,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:41:38,358 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:41:38,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:41:38,359 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:41:38,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,386 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,406 INFO L138 Inliner]: procedures = 170, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2023-08-26 15:41:38,406 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:41:38,407 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:41:38,407 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:41:38,407 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:41:38,414 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,417 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,432 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:41:38,435 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:41:38,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:41:38,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:41:38,436 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (1/1) ... [2023-08-26 15:41:38,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:41:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:41:38,478 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 15:41:38,486 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 15:41:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:41:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:41:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:41:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:41:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:41:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 15:41:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 15:41:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:41:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:41:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:41:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:41:38,519 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 15:41:38,628 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:41:38,630 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:41:38,837 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:41:38,844 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:41:38,844 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 15:41:38,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:41:38 BoogieIcfgContainer [2023-08-26 15:41:38,846 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:41:38,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:41:38,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:41:38,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:41:38,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:41:37" (1/3) ... [2023-08-26 15:41:38,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605d4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:41:38, skipping insertion in model container [2023-08-26 15:41:38,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:41:38" (2/3) ... [2023-08-26 15:41:38,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@605d4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:41:38, skipping insertion in model container [2023-08-26 15:41:38,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:41:38" (3/3) ... [2023-08-26 15:41:38,856 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2023-08-26 15:41:38,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:41:38,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-26 15:41:38,879 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:41:38,963 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 15:41:38,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 135 transitions, 278 flow [2023-08-26 15:41:39,073 INFO L124 PetriNetUnfolderBase]: 19/182 cut-off events. [2023-08-26 15:41:39,074 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:41:39,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 19/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 548 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2023-08-26 15:41:39,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 135 transitions, 278 flow [2023-08-26 15:41:39,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 130 transitions, 265 flow [2023-08-26 15:41:39,094 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:41:39,104 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 130 transitions, 265 flow [2023-08-26 15:41:39,106 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 130 transitions, 265 flow [2023-08-26 15:41:39,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 265 flow [2023-08-26 15:41:39,140 INFO L124 PetriNetUnfolderBase]: 18/177 cut-off events. [2023-08-26 15:41:39,141 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:41:39,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 177 events. 18/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 526 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2023-08-26 15:41:39,147 INFO L119 LiptonReduction]: Number of co-enabled transitions 4346 [2023-08-26 15:41:42,782 INFO L134 LiptonReduction]: Checked pairs total: 8540 [2023-08-26 15:41:42,782 INFO L136 LiptonReduction]: Total number of compositions: 120 [2023-08-26 15:41:42,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:41:42,805 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:41:42,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:41:42,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:41:42,811 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2023-08-26 15:41:42,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:41:42,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:41:42,812 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 15:41:42,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:41:42,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:41:42,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1884165296, now seen corresponding path program 1 times [2023-08-26 15:41:42,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:41:42,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595497106] [2023-08-26 15:41:42,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:41:42,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:41:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:41:42,932 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:41:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:41:42,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:41:42,985 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:41:42,986 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:41:42,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:41:42,989 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:41:42,993 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:41:42,994 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:41:42,994 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 15:41:43,039 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 15:41:43,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 178 transitions, 374 flow [2023-08-26 15:41:43,114 INFO L124 PetriNetUnfolderBase]: 34/299 cut-off events. [2023-08-26 15:41:43,115 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:41:43,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 299 events. 34/299 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1088 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2023-08-26 15:41:43,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 178 transitions, 374 flow [2023-08-26 15:41:43,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 163 places, 178 transitions, 374 flow [2023-08-26 15:41:43,124 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:41:43,124 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 163 places, 178 transitions, 374 flow [2023-08-26 15:41:43,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 163 places, 178 transitions, 374 flow [2023-08-26 15:41:43,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 178 transitions, 374 flow [2023-08-26 15:41:43,174 INFO L124 PetriNetUnfolderBase]: 34/299 cut-off events. [2023-08-26 15:41:43,174 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:41:43,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 299 events. 34/299 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1088 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2023-08-26 15:41:43,185 INFO L119 LiptonReduction]: Number of co-enabled transitions 12956 [2023-08-26 15:41:46,879 INFO L134 LiptonReduction]: Checked pairs total: 31332 [2023-08-26 15:41:46,879 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-26 15:41:46,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:41:46,882 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:41:46,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:41:46,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:41:46,890 INFO L124 PetriNetUnfolderBase]: 12/79 cut-off events. [2023-08-26 15:41:46,890 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 15:41:46,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:41:46,890 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 15:41:46,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:41:46,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:41:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1720372888, now seen corresponding path program 1 times [2023-08-26 15:41:46,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:41:46,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544104433] [2023-08-26 15:41:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:41:46,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:41:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:41:46,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:41:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:41:46,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:41:46,951 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:41:46,951 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:41:46,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:41:46,951 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:41:46,952 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:41:46,952 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:41:46,952 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 15:41:46,976 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 15:41:46,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 221 transitions, 472 flow [2023-08-26 15:41:47,027 INFO L124 PetriNetUnfolderBase]: 54/453 cut-off events. [2023-08-26 15:41:47,028 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:41:47,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 453 events. 54/453 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1807 event pairs, 1 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 307. Up to 16 conditions per place. [2023-08-26 15:41:47,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 221 transitions, 472 flow [2023-08-26 15:41:47,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 221 transitions, 472 flow [2023-08-26 15:41:47,036 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:41:47,036 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 221 transitions, 472 flow [2023-08-26 15:41:47,036 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 221 transitions, 472 flow [2023-08-26 15:41:47,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 221 transitions, 472 flow [2023-08-26 15:41:47,083 INFO L124 PetriNetUnfolderBase]: 54/453 cut-off events. [2023-08-26 15:41:47,083 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:41:47,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 453 events. 54/453 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1807 event pairs, 1 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 307. Up to 16 conditions per place. [2023-08-26 15:41:47,105 INFO L119 LiptonReduction]: Number of co-enabled transitions 24846 [2023-08-26 15:41:51,108 INFO L134 LiptonReduction]: Checked pairs total: 64438 [2023-08-26 15:41:51,108 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-08-26 15:41:51,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:41:51,113 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:41:51,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:41:51,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:41:51,124 INFO L124 PetriNetUnfolderBase]: 22/128 cut-off events. [2023-08-26 15:41:51,124 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 15:41:51,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:41:51,125 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 15:41:51,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:41:51,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:41:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1146926420, now seen corresponding path program 1 times [2023-08-26 15:41:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:41:51,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905318518] [2023-08-26 15:41:51,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:41:51,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:41:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:41:51,176 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:41:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:41:51,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:41:51,222 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:41:51,222 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:41:51,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:41:51,222 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:41:51,223 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:41:51,223 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:41:51,223 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 15:41:51,261 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 15:41:51,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 264 transitions, 572 flow [2023-08-26 15:41:51,386 INFO L124 PetriNetUnfolderBase]: 86/683 cut-off events. [2023-08-26 15:41:51,387 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:41:51,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 683 events. 86/683 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3058 event pairs, 6 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 473. Up to 32 conditions per place. [2023-08-26 15:41:51,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 264 transitions, 572 flow [2023-08-26 15:41:51,399 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 264 transitions, 572 flow [2023-08-26 15:41:51,399 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:41:51,399 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 264 transitions, 572 flow [2023-08-26 15:41:51,400 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 264 transitions, 572 flow [2023-08-26 15:41:51,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 264 transitions, 572 flow [2023-08-26 15:41:51,486 INFO L124 PetriNetUnfolderBase]: 86/683 cut-off events. [2023-08-26 15:41:51,487 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:41:51,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 683 events. 86/683 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3058 event pairs, 6 based on Foata normal form. 0/508 useless extension candidates. Maximal degree in co-relation 473. Up to 32 conditions per place. [2023-08-26 15:41:51,515 INFO L119 LiptonReduction]: Number of co-enabled transitions 40344 [2023-08-26 15:41:55,756 INFO L134 LiptonReduction]: Checked pairs total: 126222 [2023-08-26 15:41:55,757 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-26 15:41:55,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:41:55,763 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:41:55,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:41:55,778 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:41:55,778 INFO L124 PetriNetUnfolderBase]: 29/181 cut-off events. [2023-08-26 15:41:55,778 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-26 15:41:55,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:41:55,779 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-26 15:41:55,779 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:41:55,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:41:55,779 INFO L85 PathProgramCache]: Analyzing trace with hash 846938056, now seen corresponding path program 1 times [2023-08-26 15:41:55,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:41:55,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658426384] [2023-08-26 15:41:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:41:55,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:41:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:41:55,801 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:41:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:41:55,821 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:41:55,821 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:41:55,822 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:41:55,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:41:55,822 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:41:55,823 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:41:55,823 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:41:55,823 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-26 15:41:55,850 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-26 15:41:55,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 307 transitions, 674 flow [2023-08-26 15:41:56,040 INFO L124 PetriNetUnfolderBase]: 146/1069 cut-off events. [2023-08-26 15:41:56,042 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:41:56,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 1069 events. 146/1069 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5480 event pairs, 23 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 728. Up to 80 conditions per place. [2023-08-26 15:41:56,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 307 transitions, 674 flow [2023-08-26 15:41:56,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 307 transitions, 674 flow [2023-08-26 15:41:56,059 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:41:56,059 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 277 places, 307 transitions, 674 flow [2023-08-26 15:41:56,060 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 277 places, 307 transitions, 674 flow [2023-08-26 15:41:56,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 307 transitions, 674 flow [2023-08-26 15:41:56,210 INFO L124 PetriNetUnfolderBase]: 146/1069 cut-off events. [2023-08-26 15:41:56,211 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:41:56,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1180 conditions, 1069 events. 146/1069 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5480 event pairs, 23 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 728. Up to 80 conditions per place. [2023-08-26 15:41:56,267 INFO L119 LiptonReduction]: Number of co-enabled transitions 59450 [2023-08-26 15:42:00,628 INFO L134 LiptonReduction]: Checked pairs total: 169867 [2023-08-26 15:42:00,628 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-08-26 15:42:00,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:42:00,631 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:42:00,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:42:00,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:42:00,653 INFO L124 PetriNetUnfolderBase]: 48/257 cut-off events. [2023-08-26 15:42:00,653 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 15:42:00,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:42:00,653 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:42:00,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:42:00,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:42:00,654 INFO L85 PathProgramCache]: Analyzing trace with hash 405545361, now seen corresponding path program 1 times [2023-08-26 15:42:00,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:42:00,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978654427] [2023-08-26 15:42:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:42:00,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:42:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:00,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:42:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:00,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:42:00,697 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:42:00,697 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:42:00,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:42:00,698 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:42:00,698 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:42:00,698 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:42:00,698 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-26 15:42:00,728 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-26 15:42:00,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 350 transitions, 778 flow [2023-08-26 15:42:01,066 INFO L124 PetriNetUnfolderBase]: 270/1775 cut-off events. [2023-08-26 15:42:01,066 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:42:01,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 1775 events. 270/1775 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10729 event pairs, 72 based on Foata normal form. 0/1358 useless extension candidates. Maximal degree in co-relation 1168. Up to 192 conditions per place. [2023-08-26 15:42:01,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 350 transitions, 778 flow [2023-08-26 15:42:01,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 350 transitions, 778 flow [2023-08-26 15:42:01,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:42:01,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 350 transitions, 778 flow [2023-08-26 15:42:01,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 350 transitions, 778 flow [2023-08-26 15:42:01,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 350 transitions, 778 flow [2023-08-26 15:42:01,402 INFO L124 PetriNetUnfolderBase]: 270/1775 cut-off events. [2023-08-26 15:42:01,402 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:42:01,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2007 conditions, 1775 events. 270/1775 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10729 event pairs, 72 based on Foata normal form. 0/1358 useless extension candidates. Maximal degree in co-relation 1168. Up to 192 conditions per place. [2023-08-26 15:42:01,517 INFO L119 LiptonReduction]: Number of co-enabled transitions 82164 [2023-08-26 15:42:05,993 INFO L134 LiptonReduction]: Checked pairs total: 244149 [2023-08-26 15:42:05,994 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-26 15:42:05,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:42:05,995 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:42:05,995 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:42:06,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:42:06,023 INFO L124 PetriNetUnfolderBase]: 56/323 cut-off events. [2023-08-26 15:42:06,023 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-26 15:42:06,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:42:06,023 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:42:06,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:42:06,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:42:06,024 INFO L85 PathProgramCache]: Analyzing trace with hash -962966522, now seen corresponding path program 1 times [2023-08-26 15:42:06,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:42:06,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661793034] [2023-08-26 15:42:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:42:06,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:42:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:06,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:42:06,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:06,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:42:06,070 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:42:06,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:42:06,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:42:06,070 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:42:06,071 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:42:06,071 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:42:06,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-26 15:42:06,113 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-26 15:42:06,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 393 transitions, 884 flow [2023-08-26 15:42:06,733 INFO L124 PetriNetUnfolderBase]: 538/3137 cut-off events. [2023-08-26 15:42:06,733 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:42:06,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 3137 events. 538/3137 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 22654 event pairs, 201 based on Foata normal form. 0/2439 useless extension candidates. Maximal degree in co-relation 1993. Up to 448 conditions per place. [2023-08-26 15:42:06,785 INFO L82 GeneralOperation]: Start removeDead. Operand has 353 places, 393 transitions, 884 flow [2023-08-26 15:42:06,812 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 353 places, 393 transitions, 884 flow [2023-08-26 15:42:06,813 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:42:06,813 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 353 places, 393 transitions, 884 flow [2023-08-26 15:42:06,813 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 353 places, 393 transitions, 884 flow [2023-08-26 15:42:06,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 393 transitions, 884 flow [2023-08-26 15:42:07,442 INFO L124 PetriNetUnfolderBase]: 538/3137 cut-off events. [2023-08-26 15:42:07,443 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:42:07,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3635 conditions, 3137 events. 538/3137 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 22654 event pairs, 201 based on Foata normal form. 0/2439 useless extension candidates. Maximal degree in co-relation 1993. Up to 448 conditions per place. [2023-08-26 15:42:07,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 108486 [2023-08-26 15:42:12,745 INFO L134 LiptonReduction]: Checked pairs total: 324423 [2023-08-26 15:42:12,745 INFO L136 LiptonReduction]: Total number of compositions: 309 [2023-08-26 15:42:12,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:42:12,747 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:42:12,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:42:12,790 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:42:12,790 INFO L124 PetriNetUnfolderBase]: 83/431 cut-off events. [2023-08-26 15:42:12,790 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-26 15:42:12,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:42:12,790 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:42:12,791 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:42:12,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:42:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash 279484538, now seen corresponding path program 1 times [2023-08-26 15:42:12,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:42:12,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138649149] [2023-08-26 15:42:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:42:12,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:42:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:12,833 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:42:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:12,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:42:12,895 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:42:12,895 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:42:12,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:42:12,895 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:42:12,896 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:42:12,896 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:42:12,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-26 15:42:12,947 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-26 15:42:12,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 436 transitions, 992 flow [2023-08-26 15:42:14,312 INFO L124 PetriNetUnfolderBase]: 1126/5843 cut-off events. [2023-08-26 15:42:14,312 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:42:14,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6928 conditions, 5843 events. 1126/5843 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 49572 event pairs, 522 based on Foata normal form. 0/4608 useless extension candidates. Maximal degree in co-relation 3619. Up to 1024 conditions per place. [2023-08-26 15:42:14,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 391 places, 436 transitions, 992 flow [2023-08-26 15:42:14,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 391 places, 436 transitions, 992 flow [2023-08-26 15:42:14,434 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:42:14,434 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 436 transitions, 992 flow [2023-08-26 15:42:14,435 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 436 transitions, 992 flow [2023-08-26 15:42:14,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 436 transitions, 992 flow [2023-08-26 15:42:15,582 INFO L124 PetriNetUnfolderBase]: 1126/5843 cut-off events. [2023-08-26 15:42:15,582 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:42:15,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6928 conditions, 5843 events. 1126/5843 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 49572 event pairs, 522 based on Foata normal form. 0/4608 useless extension candidates. Maximal degree in co-relation 3619. Up to 1024 conditions per place. [2023-08-26 15:42:15,879 INFO L119 LiptonReduction]: Number of co-enabled transitions 138416 [2023-08-26 15:42:21,187 INFO L134 LiptonReduction]: Checked pairs total: 475477 [2023-08-26 15:42:21,187 INFO L136 LiptonReduction]: Total number of compositions: 343 [2023-08-26 15:42:21,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:42:21,189 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:42:21,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:42:21,246 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:42:21,246 INFO L124 PetriNetUnfolderBase]: 105/551 cut-off events. [2023-08-26 15:42:21,246 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-26 15:42:21,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:42:21,246 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:42:21,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:42:21,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:42:21,247 INFO L85 PathProgramCache]: Analyzing trace with hash -576860789, now seen corresponding path program 1 times [2023-08-26 15:42:21,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:42:21,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897966062] [2023-08-26 15:42:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:42:21,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:42:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:21,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:42:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:21,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:42:21,288 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:42:21,289 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:42:21,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:42:21,289 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:42:21,289 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:42:21,290 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:42:21,290 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-26 15:42:21,328 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 15:42:21,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 479 transitions, 1102 flow [2023-08-26 15:42:23,863 INFO L124 PetriNetUnfolderBase]: 2418/11301 cut-off events. [2023-08-26 15:42:23,863 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:42:24,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13678 conditions, 11301 events. 2418/11301 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 110270 event pairs, 1291 based on Foata normal form. 0/9017 useless extension candidates. Maximal degree in co-relation 6910. Up to 2304 conditions per place. [2023-08-26 15:42:24,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 429 places, 479 transitions, 1102 flow [2023-08-26 15:42:24,219 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 429 places, 479 transitions, 1102 flow [2023-08-26 15:42:24,225 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:42:24,225 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 429 places, 479 transitions, 1102 flow [2023-08-26 15:42:24,225 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 429 places, 479 transitions, 1102 flow [2023-08-26 15:42:24,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 429 places, 479 transitions, 1102 flow [2023-08-26 15:42:26,705 INFO L124 PetriNetUnfolderBase]: 2418/11301 cut-off events. [2023-08-26 15:42:26,706 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:42:26,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13678 conditions, 11301 events. 2418/11301 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 110270 event pairs, 1291 based on Foata normal form. 0/9017 useless extension candidates. Maximal degree in co-relation 6910. Up to 2304 conditions per place. [2023-08-26 15:42:27,354 INFO L119 LiptonReduction]: Number of co-enabled transitions 171954 [2023-08-26 15:42:33,051 INFO L134 LiptonReduction]: Checked pairs total: 537583 [2023-08-26 15:42:33,051 INFO L136 LiptonReduction]: Total number of compositions: 378 [2023-08-26 15:42:33,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:42:33,053 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:42:33,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:42:33,123 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:42:33,123 INFO L124 PetriNetUnfolderBase]: 159/743 cut-off events. [2023-08-26 15:42:33,123 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-26 15:42:33,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:42:33,124 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:42:33,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:42:33,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:42:33,124 INFO L85 PathProgramCache]: Analyzing trace with hash -535870841, now seen corresponding path program 1 times [2023-08-26 15:42:33,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:42:33,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924354438] [2023-08-26 15:42:33,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:42:33,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:42:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:33,145 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:42:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:33,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:42:33,166 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:42:33,167 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:42:33,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:42:33,167 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:42:33,167 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:42:33,168 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:42:33,168 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-26 15:42:33,212 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-26 15:42:33,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 467 places, 522 transitions, 1214 flow [2023-08-26 15:42:38,732 INFO L124 PetriNetUnfolderBase]: 5246/22391 cut-off events. [2023-08-26 15:42:38,733 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:42:39,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27597 conditions, 22391 events. 5246/22391 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 248052 event pairs, 3084 based on Foata normal form. 0/18034 useless extension candidates. Maximal degree in co-relation 13658. Up to 5120 conditions per place. [2023-08-26 15:42:39,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 522 transitions, 1214 flow [2023-08-26 15:42:39,285 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 467 places, 522 transitions, 1214 flow [2023-08-26 15:42:39,285 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:42:39,285 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 467 places, 522 transitions, 1214 flow [2023-08-26 15:42:39,286 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 467 places, 522 transitions, 1214 flow [2023-08-26 15:42:39,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 467 places, 522 transitions, 1214 flow [2023-08-26 15:42:44,737 INFO L124 PetriNetUnfolderBase]: 5246/22391 cut-off events. [2023-08-26 15:42:44,738 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:42:45,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27597 conditions, 22391 events. 5246/22391 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 248052 event pairs, 3084 based on Foata normal form. 0/18034 useless extension candidates. Maximal degree in co-relation 13658. Up to 5120 conditions per place. [2023-08-26 15:42:46,247 INFO L119 LiptonReduction]: Number of co-enabled transitions 209100 [2023-08-26 15:42:52,254 INFO L134 LiptonReduction]: Checked pairs total: 649218 [2023-08-26 15:42:52,254 INFO L136 LiptonReduction]: Total number of compositions: 400 [2023-08-26 15:42:52,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:42:52,256 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:42:52,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:42:52,388 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:42:52,388 INFO L124 PetriNetUnfolderBase]: 234/1014 cut-off events. [2023-08-26 15:42:52,388 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-26 15:42:52,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:42:52,389 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:42:52,389 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:42:52,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:42:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash 446795949, now seen corresponding path program 1 times [2023-08-26 15:42:52,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:42:52,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980470433] [2023-08-26 15:42:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:42:52,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:42:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:52,433 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:42:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:42:52,461 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:42:52,461 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:42:52,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:42:52,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 15:42:52,462 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:42:52,462 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:42:52,463 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:42:52,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-26 15:42:52,520 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-26 15:42:52,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 505 places, 565 transitions, 1328 flow [2023-08-26 15:43:04,927 INFO L124 PetriNetUnfolderBase]: 11402/45001 cut-off events. [2023-08-26 15:43:04,927 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:43:05,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56365 conditions, 45001 events. 11402/45001 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 556506 event pairs, 7181 based on Foata normal form. 0/36523 useless extension candidates. Maximal degree in co-relation 27575. Up to 11264 conditions per place. [2023-08-26 15:43:05,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 505 places, 565 transitions, 1328 flow [2023-08-26 15:43:06,310 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 505 places, 565 transitions, 1328 flow [2023-08-26 15:43:06,310 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:43:06,311 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 505 places, 565 transitions, 1328 flow [2023-08-26 15:43:06,311 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 505 places, 565 transitions, 1328 flow [2023-08-26 15:43:06,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 505 places, 565 transitions, 1328 flow [2023-08-26 15:43:18,316 INFO L124 PetriNetUnfolderBase]: 11402/45001 cut-off events. [2023-08-26 15:43:18,316 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:43:19,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56365 conditions, 45001 events. 11402/45001 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 556506 event pairs, 7181 based on Foata normal form. 0/36523 useless extension candidates. Maximal degree in co-relation 27575. Up to 11264 conditions per place. [2023-08-26 15:43:21,833 INFO L119 LiptonReduction]: Number of co-enabled transitions 249854 [2023-08-26 15:43:28,210 INFO L134 LiptonReduction]: Checked pairs total: 786187 [2023-08-26 15:43:28,210 INFO L136 LiptonReduction]: Total number of compositions: 429 [2023-08-26 15:43:28,211 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:43:28,212 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:43:28,212 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:43:28,382 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:43:28,382 INFO L124 PetriNetUnfolderBase]: 349/1413 cut-off events. [2023-08-26 15:43:28,382 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-26 15:43:28,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:43:28,383 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:43:28,383 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:43:28,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:43:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash 643409242, now seen corresponding path program 1 times [2023-08-26 15:43:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:43:28,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945522302] [2023-08-26 15:43:28,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:43:28,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:43:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:43:28,421 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:43:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:43:28,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:43:28,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:43:28,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:43:28,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 15:43:28,454 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:43:28,454 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:43:28,454 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:43:28,454 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-26 15:43:28,504 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-26 15:43:28,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 608 transitions, 1444 flow [2023-08-26 15:43:58,572 INFO L124 PetriNetUnfolderBase]: 24726/91163 cut-off events. [2023-08-26 15:43:58,572 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:44:03,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115854 conditions, 91163 events. 24726/91163 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 1225956 event pairs, 16398 based on Foata normal form. 0/74468 useless extension candidates. Maximal degree in co-relation 56341. Up to 24576 conditions per place. [2023-08-26 15:44:03,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 543 places, 608 transitions, 1444 flow [2023-08-26 15:44:04,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 543 places, 608 transitions, 1444 flow [2023-08-26 15:44:04,766 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:44:04,766 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 543 places, 608 transitions, 1444 flow [2023-08-26 15:44:04,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 543 places, 608 transitions, 1444 flow [2023-08-26 15:44:04,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 608 transitions, 1444 flow [2023-08-26 15:44:31,337 INFO L124 PetriNetUnfolderBase]: 24726/91163 cut-off events. [2023-08-26 15:44:31,338 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:44:35,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115854 conditions, 91163 events. 24726/91163 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 1225956 event pairs, 16398 based on Foata normal form. 0/74468 useless extension candidates. Maximal degree in co-relation 56341. Up to 24576 conditions per place. [2023-08-26 15:44:45,712 INFO L119 LiptonReduction]: Number of co-enabled transitions 294216 [2023-08-26 15:44:52,278 INFO L134 LiptonReduction]: Checked pairs total: 928614 [2023-08-26 15:44:52,278 INFO L136 LiptonReduction]: Total number of compositions: 458 [2023-08-26 15:44:52,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:44:52,280 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;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:44:52,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:44:52,576 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:44:52,576 INFO L124 PetriNetUnfolderBase]: 560/2042 cut-off events. [2023-08-26 15:44:52,576 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-26 15:44:52,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:44:52,576 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 15:44:52,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:44:52,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:44:52,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2030573024, now seen corresponding path program 1 times [2023-08-26 15:44:52,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:44:52,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766219349] [2023-08-26 15:44:52,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:44:52,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:44:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:44:52,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:44:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:44:52,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:44:52,627 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:44:52,627 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:44:52,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 15:44:52,627 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:44:52,628 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:44:52,628 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:44:52,628 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-26 15:44:52,678 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-26 15:44:52,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 581 places, 651 transitions, 1562 flow [2023-08-26 15:45:54,639 INFO L124 PetriNetUnfolderBase]: 53410/185453 cut-off events. [2023-08-26 15:45:54,640 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:46:03,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238832 conditions, 185453 events. 53410/185453 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4235. Compared 2715103 event pairs, 36879 based on Foata normal form. 0/152349 useless extension candidates. Maximal degree in co-relation 115828. Up to 53248 conditions per place. [2023-08-26 15:46:03,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 581 places, 651 transitions, 1562 flow [2023-08-26 15:46:07,556 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 581 places, 651 transitions, 1562 flow [2023-08-26 15:46:07,557 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:46:07,557 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 581 places, 651 transitions, 1562 flow [2023-08-26 15:46:07,557 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 581 places, 651 transitions, 1562 flow [2023-08-26 15:46:07,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 581 places, 651 transitions, 1562 flow [2023-08-26 15:47:08,560 INFO L124 PetriNetUnfolderBase]: 53410/185453 cut-off events. [2023-08-26 15:47:08,561 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:47:17,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238832 conditions, 185453 events. 53410/185453 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4235. Compared 2715103 event pairs, 36879 based on Foata normal form. 0/152349 useless extension candidates. Maximal degree in co-relation 115828. Up to 53248 conditions per place. [2023-08-26 15:47:42,282 INFO L119 LiptonReduction]: Number of co-enabled transitions 342186 [2023-08-26 15:47:49,877 INFO L134 LiptonReduction]: Checked pairs total: 1090771 [2023-08-26 15:47:49,878 INFO L136 LiptonReduction]: Total number of compositions: 517 [2023-08-26 15:47:49,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:47:49,879 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3aa6d723, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:47:49,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:47:50,241 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:47:50,242 INFO L124 PetriNetUnfolderBase]: 913/3016 cut-off events. [2023-08-26 15:47:50,242 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2023-08-26 15:47:50,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:47:50,242 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 15:47:50,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:47:50,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:47:50,243 INFO L85 PathProgramCache]: Analyzing trace with hash -563477637, now seen corresponding path program 1 times [2023-08-26 15:47:50,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:47:50,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44271971] [2023-08-26 15:47:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:47:50,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:47:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:47:50,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:47:50,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:47:50,293 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:47:50,293 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:47:50,293 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:47:50,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 15:47:50,294 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:47:50,294 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:47:50,294 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:47:50,294 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-26 15:47:50,351 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-26 15:47:50,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 619 places, 694 transitions, 1682 flow