/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_12-ptr_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 15:44:50,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 15:44:50,459 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 15:44:50,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 15:44:50,463 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 15:44:50,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 15:44:50,493 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 15:44:50,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 15:44:50,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 15:44:50,498 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 15:44:50,498 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 15:44:50,498 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 15:44:50,498 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 15:44:50,499 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 15:44:50,499 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 15:44:50,499 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 15:44:50,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 15:44:50,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 15:44:50,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 15:44:50,500 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 15:44:50,500 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 15:44:50,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 15:44:50,503 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 15:44:50,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 15:44:50,504 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 15:44:50,504 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 15:44:50,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 15:44:50,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:44:50,504 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 15:44:50,504 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 15:44:50,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 15:44:50,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 15:44:50,505 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 15:44:50,505 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 15:44:50,506 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 15:44:50,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer base address is valid at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Pointer to allocated memory at dereference -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check array bounds for arrays that are off heap -> ASSERTandASSUME Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check if freed pointer was valid -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2023-08-26 15:44:50,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 15:44:50,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 15:44:50,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 15:44:50,772 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 15:44:50,772 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 15:44:50,775 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-08-26 15:44:51,642 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 15:44:51,837 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 15:44:51,837 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_12-ptr_racefree.i [2023-08-26 15:44:51,848 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3306994d3/704368866bfe441e89791d423523ad99/FLAG63472c2fb [2023-08-26 15:44:51,859 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3306994d3/704368866bfe441e89791d423523ad99 [2023-08-26 15:44:51,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 15:44:51,861 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 15:44:51,862 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 15:44:51,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 15:44:51,864 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 15:44:51,864 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:44:51" (1/1) ... [2023-08-26 15:44:51,865 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475e24a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:51, skipping insertion in model container [2023-08-26 15:44:51,865 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 03:44:51" (1/1) ... [2023-08-26 15:44:51,905 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 15:44:52,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:44:52,162 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 15:44:52,186 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:44:52,187 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 15:44:52,198 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 15:44:52,230 INFO L206 MainTranslator]: Completed translation [2023-08-26 15:44:52,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52 WrapperNode [2023-08-26 15:44:52,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 15:44:52,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 15:44:52,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 15:44:52,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 15:44:52,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,279 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2023-08-26 15:44:52,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 15:44:52,280 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 15:44:52,280 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 15:44:52,280 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 15:44:52,285 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,285 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,295 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,295 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,299 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,310 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,311 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,312 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,314 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 15:44:52,314 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 15:44:52,314 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 15:44:52,314 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 15:44:52,315 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (1/1) ... [2023-08-26 15:44:52,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 15:44:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 15:44:52,342 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 15:44:52,347 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 15:44:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 15:44:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 15:44:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 15:44:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 15:44:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 15:44:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 15:44:52,370 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 15:44:52,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 15:44:52,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 15:44:52,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 15:44:52,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 15:44:52,371 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 15:44:52,477 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 15:44:52,479 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 15:44:52,658 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 15:44:52,662 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 15:44:52,662 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 15:44:52,664 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:44:52 BoogieIcfgContainer [2023-08-26 15:44:52,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 15:44:52,665 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 15:44:52,665 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 15:44:52,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 15:44:52,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 03:44:51" (1/3) ... [2023-08-26 15:44:52,667 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a912d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:44:52, skipping insertion in model container [2023-08-26 15:44:52,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 03:44:52" (2/3) ... [2023-08-26 15:44:52,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a912d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 03:44:52, skipping insertion in model container [2023-08-26 15:44:52,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 03:44:52" (3/3) ... [2023-08-26 15:44:52,668 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_12-ptr_racefree.i [2023-08-26 15:44:52,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 15:44:52,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-26 15:44:52,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 15:44:52,719 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 15:44:52,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 137 transitions, 282 flow [2023-08-26 15:44:52,829 INFO L124 PetriNetUnfolderBase]: 19/184 cut-off events. [2023-08-26 15:44:52,829 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 15:44:52,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 184 events. 19/184 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 552 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2023-08-26 15:44:52,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 137 transitions, 282 flow [2023-08-26 15:44:52,840 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 132 transitions, 269 flow [2023-08-26 15:44:52,842 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:44:52,846 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 132 transitions, 269 flow [2023-08-26 15:44:52,848 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 132 transitions, 269 flow [2023-08-26 15:44:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 132 transitions, 269 flow [2023-08-26 15:44:52,888 INFO L124 PetriNetUnfolderBase]: 18/179 cut-off events. [2023-08-26 15:44:52,890 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:44:52,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 179 events. 18/179 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. 0/135 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2023-08-26 15:44:52,894 INFO L119 LiptonReduction]: Number of co-enabled transitions 4346 [2023-08-26 15:44:55,815 INFO L134 LiptonReduction]: Checked pairs total: 8733 [2023-08-26 15:44:55,815 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-26 15:44:55,824 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:44:55,828 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:44:55,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:44:55,832 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:44:55,832 INFO L124 PetriNetUnfolderBase]: 2/27 cut-off events. [2023-08-26 15:44:55,832 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 15:44:55,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:44:55,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 15:44:55,833 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:44:55,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:44:55,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1690097325, now seen corresponding path program 1 times [2023-08-26 15:44:55,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:44:55,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837773682] [2023-08-26 15:44:55,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:44:55,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:44:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:44:55,959 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:44:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:44:56,006 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:44:56,007 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:44:56,008 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:44:56,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 15:44:56,009 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:44:56,014 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:44:56,015 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:44:56,015 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 15:44:56,043 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 15:44:56,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 180 transitions, 378 flow [2023-08-26 15:44:56,075 INFO L124 PetriNetUnfolderBase]: 34/301 cut-off events. [2023-08-26 15:44:56,075 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:44:56,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 34/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1082 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-26 15:44:56,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 180 transitions, 378 flow [2023-08-26 15:44:56,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 180 transitions, 378 flow [2023-08-26 15:44:56,079 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:44:56,079 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 180 transitions, 378 flow [2023-08-26 15:44:56,079 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 180 transitions, 378 flow [2023-08-26 15:44:56,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 180 transitions, 378 flow [2023-08-26 15:44:56,103 INFO L124 PetriNetUnfolderBase]: 34/301 cut-off events. [2023-08-26 15:44:56,103 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 15:44:56,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 301 events. 34/301 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1082 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 186. Up to 8 conditions per place. [2023-08-26 15:44:56,112 INFO L119 LiptonReduction]: Number of co-enabled transitions 12956 [2023-08-26 15:44:59,038 INFO L134 LiptonReduction]: Checked pairs total: 31640 [2023-08-26 15:44:59,038 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-08-26 15:44:59,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:44:59,040 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:44:59,040 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:44:59,045 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:44:59,045 INFO L124 PetriNetUnfolderBase]: 12/79 cut-off events. [2023-08-26 15:44:59,045 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 15:44:59,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:44:59,046 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 15:44:59,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:44:59,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:44:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash 2060428000, now seen corresponding path program 1 times [2023-08-26 15:44:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:44:59,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140279576] [2023-08-26 15:44:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:44:59,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:44:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:44:59,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:44:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:44:59,085 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:44:59,085 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:44:59,085 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:44:59,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 15:44:59,085 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:44:59,086 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:44:59,086 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:44:59,086 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 15:44:59,104 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 15:44:59,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 223 transitions, 476 flow [2023-08-26 15:44:59,148 INFO L124 PetriNetUnfolderBase]: 54/455 cut-off events. [2023-08-26 15:44:59,149 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:44:59,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 455 events. 54/455 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1806 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2023-08-26 15:44:59,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 223 transitions, 476 flow [2023-08-26 15:44:59,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 223 transitions, 476 flow [2023-08-26 15:44:59,154 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:44:59,154 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 223 transitions, 476 flow [2023-08-26 15:44:59,154 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 223 transitions, 476 flow [2023-08-26 15:44:59,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 223 transitions, 476 flow [2023-08-26 15:44:59,188 INFO L124 PetriNetUnfolderBase]: 54/455 cut-off events. [2023-08-26 15:44:59,189 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 15:44:59,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 455 events. 54/455 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1806 event pairs, 1 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2023-08-26 15:44:59,203 INFO L119 LiptonReduction]: Number of co-enabled transitions 24846 [2023-08-26 15:45:02,345 INFO L134 LiptonReduction]: Checked pairs total: 64524 [2023-08-26 15:45:02,345 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-08-26 15:45:02,347 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:02,347 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:02,348 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:02,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:02,356 INFO L124 PetriNetUnfolderBase]: 19/125 cut-off events. [2023-08-26 15:45:02,356 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-26 15:45:02,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:02,356 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 15:45:02,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:02,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:02,356 INFO L85 PathProgramCache]: Analyzing trace with hash 539084607, now seen corresponding path program 1 times [2023-08-26 15:45:02,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:02,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125947458] [2023-08-26 15:45:02,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:02,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:02,381 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:02,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:02,402 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:02,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:02,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 15:45:02,403 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:02,403 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:02,403 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:02,403 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 15:45:02,421 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 15:45:02,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 266 transitions, 576 flow [2023-08-26 15:45:02,492 INFO L124 PetriNetUnfolderBase]: 86/685 cut-off events. [2023-08-26 15:45:02,493 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:45:02,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 685 events. 86/685 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3050 event pairs, 6 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 475. Up to 32 conditions per place. [2023-08-26 15:45:02,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 266 transitions, 576 flow [2023-08-26 15:45:02,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 266 transitions, 576 flow [2023-08-26 15:45:02,508 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:02,508 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 266 transitions, 576 flow [2023-08-26 15:45:02,508 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 266 transitions, 576 flow [2023-08-26 15:45:02,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 266 transitions, 576 flow [2023-08-26 15:45:02,592 INFO L124 PetriNetUnfolderBase]: 86/685 cut-off events. [2023-08-26 15:45:02,592 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 15:45:02,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 685 events. 86/685 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3050 event pairs, 6 based on Foata normal form. 0/510 useless extension candidates. Maximal degree in co-relation 475. Up to 32 conditions per place. [2023-08-26 15:45:02,610 INFO L119 LiptonReduction]: Number of co-enabled transitions 40344 [2023-08-26 15:45:06,077 INFO L134 LiptonReduction]: Checked pairs total: 113840 [2023-08-26 15:45:06,077 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-08-26 15:45:06,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:06,079 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:06,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:06,089 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:06,089 INFO L124 PetriNetUnfolderBase]: 29/181 cut-off events. [2023-08-26 15:45:06,089 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-08-26 15:45:06,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:06,089 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:06,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:06,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:06,089 INFO L85 PathProgramCache]: Analyzing trace with hash -345066627, now seen corresponding path program 1 times [2023-08-26 15:45:06,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:06,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021918183] [2023-08-26 15:45:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:06,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:06,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:06,141 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:06,141 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:06,141 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:06,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 15:45:06,141 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:06,142 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:06,142 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:06,142 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-26 15:45:06,163 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-26 15:45:06,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 309 transitions, 678 flow [2023-08-26 15:45:06,263 INFO L124 PetriNetUnfolderBase]: 146/1071 cut-off events. [2023-08-26 15:45:06,263 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:45:06,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182 conditions, 1071 events. 146/1071 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5476 event pairs, 23 based on Foata normal form. 0/807 useless extension candidates. Maximal degree in co-relation 730. Up to 80 conditions per place. [2023-08-26 15:45:06,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 309 transitions, 678 flow [2023-08-26 15:45:06,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 309 transitions, 678 flow [2023-08-26 15:45:06,281 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:06,281 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 309 transitions, 678 flow [2023-08-26 15:45:06,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 309 transitions, 678 flow [2023-08-26 15:45:06,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 309 transitions, 678 flow [2023-08-26 15:45:06,380 INFO L124 PetriNetUnfolderBase]: 146/1071 cut-off events. [2023-08-26 15:45:06,381 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2023-08-26 15:45:06,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1182 conditions, 1071 events. 146/1071 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5476 event pairs, 23 based on Foata normal form. 0/807 useless extension candidates. Maximal degree in co-relation 730. Up to 80 conditions per place. [2023-08-26 15:45:06,415 INFO L119 LiptonReduction]: Number of co-enabled transitions 59450 [2023-08-26 15:45:10,277 INFO L134 LiptonReduction]: Checked pairs total: 189629 [2023-08-26 15:45:10,277 INFO L136 LiptonReduction]: Total number of compositions: 239 [2023-08-26 15:45:10,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:10,300 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:10,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:10,315 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:10,315 INFO L124 PetriNetUnfolderBase]: 43/252 cut-off events. [2023-08-26 15:45:10,315 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 15:45:10,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:10,316 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:10,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:10,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:10,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1809727537, now seen corresponding path program 1 times [2023-08-26 15:45:10,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:10,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489602987] [2023-08-26 15:45:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:10,356 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:10,378 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:10,379 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:10,379 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:10,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 15:45:10,379 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:10,379 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:10,379 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:10,379 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-26 15:45:10,421 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-26 15:45:10,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 352 transitions, 782 flow [2023-08-26 15:45:10,625 INFO L124 PetriNetUnfolderBase]: 270/1777 cut-off events. [2023-08-26 15:45:10,625 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:45:10,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2009 conditions, 1777 events. 270/1777 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10723 event pairs, 72 based on Foata normal form. 0/1360 useless extension candidates. Maximal degree in co-relation 1170. Up to 192 conditions per place. [2023-08-26 15:45:10,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 352 transitions, 782 flow [2023-08-26 15:45:10,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 352 transitions, 782 flow [2023-08-26 15:45:10,660 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:10,661 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 352 transitions, 782 flow [2023-08-26 15:45:10,661 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 352 transitions, 782 flow [2023-08-26 15:45:10,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 352 transitions, 782 flow [2023-08-26 15:45:10,848 INFO L124 PetriNetUnfolderBase]: 270/1777 cut-off events. [2023-08-26 15:45:10,848 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-08-26 15:45:10,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2009 conditions, 1777 events. 270/1777 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10723 event pairs, 72 based on Foata normal form. 0/1360 useless extension candidates. Maximal degree in co-relation 1170. Up to 192 conditions per place. [2023-08-26 15:45:10,928 INFO L119 LiptonReduction]: Number of co-enabled transitions 82164 [2023-08-26 15:45:15,092 INFO L134 LiptonReduction]: Checked pairs total: 270036 [2023-08-26 15:45:15,092 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-26 15:45:15,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:15,094 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:15,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:15,112 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:15,112 INFO L124 PetriNetUnfolderBase]: 62/329 cut-off events. [2023-08-26 15:45:15,113 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-26 15:45:15,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:15,113 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:15,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:15,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:15,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1046781611, now seen corresponding path program 1 times [2023-08-26 15:45:15,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:15,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407275067] [2023-08-26 15:45:15,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:15,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:15,128 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:15,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:15,143 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:15,143 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:15,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 15:45:15,143 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:15,144 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:15,144 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:15,144 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-26 15:45:15,167 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-26 15:45:15,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 395 transitions, 888 flow [2023-08-26 15:45:15,621 INFO L124 PetriNetUnfolderBase]: 538/3139 cut-off events. [2023-08-26 15:45:15,621 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:45:15,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3637 conditions, 3139 events. 538/3139 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 22641 event pairs, 201 based on Foata normal form. 0/2441 useless extension candidates. Maximal degree in co-relation 1995. Up to 448 conditions per place. [2023-08-26 15:45:15,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 395 transitions, 888 flow [2023-08-26 15:45:15,684 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 395 transitions, 888 flow [2023-08-26 15:45:15,684 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:15,684 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 355 places, 395 transitions, 888 flow [2023-08-26 15:45:15,684 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 355 places, 395 transitions, 888 flow [2023-08-26 15:45:15,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 395 transitions, 888 flow [2023-08-26 15:45:16,081 INFO L124 PetriNetUnfolderBase]: 538/3139 cut-off events. [2023-08-26 15:45:16,081 INFO L125 PetriNetUnfolderBase]: For 525/525 co-relation queries the response was YES. [2023-08-26 15:45:16,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3637 conditions, 3139 events. 538/3139 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 22641 event pairs, 201 based on Foata normal form. 0/2441 useless extension candidates. Maximal degree in co-relation 1995. Up to 448 conditions per place. [2023-08-26 15:45:16,239 INFO L119 LiptonReduction]: Number of co-enabled transitions 108486 [2023-08-26 15:45:20,660 INFO L134 LiptonReduction]: Checked pairs total: 366634 [2023-08-26 15:45:20,661 INFO L136 LiptonReduction]: Total number of compositions: 311 [2023-08-26 15:45:20,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:20,662 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:20,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:20,688 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:20,688 INFO L124 PetriNetUnfolderBase]: 76/424 cut-off events. [2023-08-26 15:45:20,688 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-26 15:45:20,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:20,689 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:20,689 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:20,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:20,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2070581374, now seen corresponding path program 1 times [2023-08-26 15:45:20,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:20,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766925933] [2023-08-26 15:45:20,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:20,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:20,705 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:20,720 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:20,720 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:20,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:20,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 15:45:20,721 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:20,721 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:20,721 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:20,721 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-26 15:45:20,753 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-26 15:45:20,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 438 transitions, 996 flow [2023-08-26 15:45:21,563 INFO L124 PetriNetUnfolderBase]: 1126/5845 cut-off events. [2023-08-26 15:45:21,563 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:45:21,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6930 conditions, 5845 events. 1126/5845 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 49621 event pairs, 522 based on Foata normal form. 0/4610 useless extension candidates. Maximal degree in co-relation 3621. Up to 1024 conditions per place. [2023-08-26 15:45:21,668 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 438 transitions, 996 flow [2023-08-26 15:45:21,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 393 places, 438 transitions, 996 flow [2023-08-26 15:45:21,823 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:21,824 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 393 places, 438 transitions, 996 flow [2023-08-26 15:45:21,824 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 393 places, 438 transitions, 996 flow [2023-08-26 15:45:21,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 438 transitions, 996 flow [2023-08-26 15:45:22,718 INFO L124 PetriNetUnfolderBase]: 1126/5845 cut-off events. [2023-08-26 15:45:22,718 INFO L125 PetriNetUnfolderBase]: For 1136/1136 co-relation queries the response was YES. [2023-08-26 15:45:22,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6930 conditions, 5845 events. 1126/5845 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 49621 event pairs, 522 based on Foata normal form. 0/4610 useless extension candidates. Maximal degree in co-relation 3621. Up to 1024 conditions per place. [2023-08-26 15:45:23,101 INFO L119 LiptonReduction]: Number of co-enabled transitions 138416 [2023-08-26 15:45:27,735 INFO L134 LiptonReduction]: Checked pairs total: 420328 [2023-08-26 15:45:27,736 INFO L136 LiptonReduction]: Total number of compositions: 344 [2023-08-26 15:45:27,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:27,737 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:27,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:27,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:27,774 INFO L124 PetriNetUnfolderBase]: 113/559 cut-off events. [2023-08-26 15:45:27,774 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2023-08-26 15:45:27,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:27,774 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:27,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:27,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:27,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1832195080, now seen corresponding path program 1 times [2023-08-26 15:45:27,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:27,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278433532] [2023-08-26 15:45:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:27,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:27,789 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:27,803 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:27,803 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:27,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:27,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 15:45:27,804 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:27,804 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:27,804 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:27,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-26 15:45:27,830 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-26 15:45:27,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 481 transitions, 1106 flow [2023-08-26 15:45:29,956 INFO L124 PetriNetUnfolderBase]: 2418/11303 cut-off events. [2023-08-26 15:45:29,957 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:45:30,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13680 conditions, 11303 events. 2418/11303 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 110316 event pairs, 1291 based on Foata normal form. 0/9019 useless extension candidates. Maximal degree in co-relation 6912. Up to 2304 conditions per place. [2023-08-26 15:45:30,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 481 transitions, 1106 flow [2023-08-26 15:45:30,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 431 places, 481 transitions, 1106 flow [2023-08-26 15:45:30,223 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:30,223 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 431 places, 481 transitions, 1106 flow [2023-08-26 15:45:30,223 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 431 places, 481 transitions, 1106 flow [2023-08-26 15:45:30,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 481 transitions, 1106 flow [2023-08-26 15:45:32,265 INFO L124 PetriNetUnfolderBase]: 2418/11303 cut-off events. [2023-08-26 15:45:32,265 INFO L125 PetriNetUnfolderBase]: For 2460/2460 co-relation queries the response was YES. [2023-08-26 15:45:32,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13680 conditions, 11303 events. 2418/11303 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 110316 event pairs, 1291 based on Foata normal form. 0/9019 useless extension candidates. Maximal degree in co-relation 6912. Up to 2304 conditions per place. [2023-08-26 15:45:33,011 INFO L119 LiptonReduction]: Number of co-enabled transitions 171954 [2023-08-26 15:45:38,136 INFO L134 LiptonReduction]: Checked pairs total: 532410 [2023-08-26 15:45:38,137 INFO L136 LiptonReduction]: Total number of compositions: 380 [2023-08-26 15:45:38,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:38,138 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:38,138 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:38,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:38,211 INFO L124 PetriNetUnfolderBase]: 159/743 cut-off events. [2023-08-26 15:45:38,211 INFO L125 PetriNetUnfolderBase]: For 309/309 co-relation queries the response was YES. [2023-08-26 15:45:38,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:38,211 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:38,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:38,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash 664985194, now seen corresponding path program 1 times [2023-08-26 15:45:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:38,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466872453] [2023-08-26 15:45:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:38,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:38,228 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:38,243 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:38,243 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:38,244 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:38,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 15:45:38,244 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:38,244 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:38,244 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:38,244 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-26 15:45:38,281 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-26 15:45:38,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 469 places, 524 transitions, 1218 flow [2023-08-26 15:45:42,955 INFO L124 PetriNetUnfolderBase]: 5246/22393 cut-off events. [2023-08-26 15:45:42,955 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:45:43,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27599 conditions, 22393 events. 5246/22393 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 250279 event pairs, 3084 based on Foata normal form. 0/18036 useless extension candidates. Maximal degree in co-relation 13660. Up to 5120 conditions per place. [2023-08-26 15:45:43,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 469 places, 524 transitions, 1218 flow [2023-08-26 15:45:43,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 469 places, 524 transitions, 1218 flow [2023-08-26 15:45:43,553 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:45:43,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 469 places, 524 transitions, 1218 flow [2023-08-26 15:45:43,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 469 places, 524 transitions, 1218 flow [2023-08-26 15:45:43,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 469 places, 524 transitions, 1218 flow [2023-08-26 15:45:48,190 INFO L124 PetriNetUnfolderBase]: 5246/22393 cut-off events. [2023-08-26 15:45:48,191 INFO L125 PetriNetUnfolderBase]: For 5330/5330 co-relation queries the response was YES. [2023-08-26 15:45:48,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27599 conditions, 22393 events. 5246/22393 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 250279 event pairs, 3084 based on Foata normal form. 0/18036 useless extension candidates. Maximal degree in co-relation 13660. Up to 5120 conditions per place. [2023-08-26 15:45:49,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 209100 [2023-08-26 15:45:55,078 INFO L134 LiptonReduction]: Checked pairs total: 646991 [2023-08-26 15:45:55,078 INFO L136 LiptonReduction]: Total number of compositions: 403 [2023-08-26 15:45:55,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:45:55,080 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:45:55,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:45:55,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:45:55,200 INFO L124 PetriNetUnfolderBase]: 234/1014 cut-off events. [2023-08-26 15:45:55,200 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-08-26 15:45:55,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:45:55,200 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:45:55,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:45:55,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:45:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash 319807772, now seen corresponding path program 1 times [2023-08-26 15:45:55,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:45:55,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103156076] [2023-08-26 15:45:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:45:55,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:45:55,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:55,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:45:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:45:55,232 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:45:55,232 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:45:55,232 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:45:55,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 15:45:55,232 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:45:55,232 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:45:55,234 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:45:55,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-26 15:45:55,266 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-26 15:45:55,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 567 transitions, 1332 flow [2023-08-26 15:46:05,413 INFO L124 PetriNetUnfolderBase]: 11402/45003 cut-off events. [2023-08-26 15:46:05,413 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:46:06,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56367 conditions, 45003 events. 11402/45003 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 556757 event pairs, 7181 based on Foata normal form. 0/36525 useless extension candidates. Maximal degree in co-relation 27577. Up to 11264 conditions per place. [2023-08-26 15:46:06,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 507 places, 567 transitions, 1332 flow [2023-08-26 15:46:07,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 507 places, 567 transitions, 1332 flow [2023-08-26 15:46:07,156 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:46:07,156 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 507 places, 567 transitions, 1332 flow [2023-08-26 15:46:07,156 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 507 places, 567 transitions, 1332 flow [2023-08-26 15:46:07,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 567 transitions, 1332 flow [2023-08-26 15:46:17,350 INFO L124 PetriNetUnfolderBase]: 11402/45003 cut-off events. [2023-08-26 15:46:17,350 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2023-08-26 15:46:18,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56367 conditions, 45003 events. 11402/45003 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 556757 event pairs, 7181 based on Foata normal form. 0/36525 useless extension candidates. Maximal degree in co-relation 27577. Up to 11264 conditions per place. [2023-08-26 15:46:20,931 INFO L119 LiptonReduction]: Number of co-enabled transitions 249854 [2023-08-26 15:46:26,720 INFO L134 LiptonReduction]: Checked pairs total: 886888 [2023-08-26 15:46:26,721 INFO L136 LiptonReduction]: Total number of compositions: 436 [2023-08-26 15:46:26,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:46:26,722 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:46:26,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:46:26,839 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:46:26,840 INFO L124 PetriNetUnfolderBase]: 349/1413 cut-off events. [2023-08-26 15:46:26,840 INFO L125 PetriNetUnfolderBase]: For 713/713 co-relation queries the response was YES. [2023-08-26 15:46:26,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:46:26,840 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:46:26,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:46:26,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:46:26,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1565635691, now seen corresponding path program 1 times [2023-08-26 15:46:26,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:46:26,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173441375] [2023-08-26 15:46:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:46:26,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:46:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:46:26,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:46:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:46:26,880 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:46:26,880 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:46:26,880 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:46:26,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 15:46:26,880 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:46:26,880 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:46:26,880 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:46:26,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-26 15:46:26,920 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-26 15:46:26,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 610 transitions, 1448 flow [2023-08-26 15:46:50,523 INFO L124 PetriNetUnfolderBase]: 24726/91165 cut-off events. [2023-08-26 15:46:50,524 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:46:55,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115856 conditions, 91165 events. 24726/91165 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 1234511 event pairs, 16398 based on Foata normal form. 0/74470 useless extension candidates. Maximal degree in co-relation 56343. Up to 24576 conditions per place. [2023-08-26 15:46:55,199 INFO L82 GeneralOperation]: Start removeDead. Operand has 545 places, 610 transitions, 1448 flow [2023-08-26 15:46:56,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 545 places, 610 transitions, 1448 flow [2023-08-26 15:46:56,486 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:46:56,486 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 545 places, 610 transitions, 1448 flow [2023-08-26 15:46:56,486 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 545 places, 610 transitions, 1448 flow [2023-08-26 15:46:56,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 610 transitions, 1448 flow [2023-08-26 15:47:18,218 INFO L124 PetriNetUnfolderBase]: 24726/91165 cut-off events. [2023-08-26 15:47:18,218 INFO L125 PetriNetUnfolderBase]: For 24928/24928 co-relation queries the response was YES. [2023-08-26 15:47:22,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115856 conditions, 91165 events. 24726/91165 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 1234511 event pairs, 16398 based on Foata normal form. 0/74470 useless extension candidates. Maximal degree in co-relation 56343. Up to 24576 conditions per place. [2023-08-26 15:47:28,261 INFO L119 LiptonReduction]: Number of co-enabled transitions 294216 [2023-08-26 15:47:34,246 INFO L134 LiptonReduction]: Checked pairs total: 936080 [2023-08-26 15:47:34,246 INFO L136 LiptonReduction]: Total number of compositions: 458 [2023-08-26 15:47:34,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:47:34,248 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:47:34,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:47:34,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:47:34,427 INFO L124 PetriNetUnfolderBase]: 572/2054 cut-off events. [2023-08-26 15:47:34,427 INFO L125 PetriNetUnfolderBase]: For 1089/1089 co-relation queries the response was YES. [2023-08-26 15:47:34,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:47:34,427 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 15:47:34,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:47:34,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:47:34,427 INFO L85 PathProgramCache]: Analyzing trace with hash 603616886, now seen corresponding path program 1 times [2023-08-26 15:47:34,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:47:34,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408971274] [2023-08-26 15:47:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:47:34,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:47:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:47:34,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:47:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:47:34,459 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:47:34,460 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:47:34,460 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:47:34,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 15:47:34,460 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:47:34,460 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:47:34,460 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:47:34,460 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-26 15:47:34,496 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-26 15:47:34,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 583 places, 653 transitions, 1566 flow [2023-08-26 15:48:24,586 INFO L124 PetriNetUnfolderBase]: 53410/185455 cut-off events. [2023-08-26 15:48:24,587 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:48:37,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238834 conditions, 185455 events. 53410/185455 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4235. Compared 2714649 event pairs, 36879 based on Foata normal form. 0/152351 useless extension candidates. Maximal degree in co-relation 115830. Up to 53248 conditions per place. [2023-08-26 15:48:37,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 583 places, 653 transitions, 1566 flow [2023-08-26 15:48:41,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 583 places, 653 transitions, 1566 flow [2023-08-26 15:48:41,267 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 15:48:41,267 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 583 places, 653 transitions, 1566 flow [2023-08-26 15:48:41,268 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 583 places, 653 transitions, 1566 flow [2023-08-26 15:48:41,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 583 places, 653 transitions, 1566 flow [2023-08-26 15:49:30,316 INFO L124 PetriNetUnfolderBase]: 53410/185455 cut-off events. [2023-08-26 15:49:30,316 INFO L125 PetriNetUnfolderBase]: For 53690/53690 co-relation queries the response was YES. [2023-08-26 15:49:43,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238834 conditions, 185455 events. 53410/185455 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4235. Compared 2714649 event pairs, 36879 based on Foata normal form. 0/152351 useless extension candidates. Maximal degree in co-relation 115830. Up to 53248 conditions per place. [2023-08-26 15:50:04,664 INFO L119 LiptonReduction]: Number of co-enabled transitions 342186 [2023-08-26 15:50:11,379 INFO L134 LiptonReduction]: Checked pairs total: 1100417 [2023-08-26 15:50:11,379 INFO L136 LiptonReduction]: Total number of compositions: 522 [2023-08-26 15:50:11,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 15:50:11,380 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;@3c01b277, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 15:50:11,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 15:50:11,685 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 15:50:11,685 INFO L124 PetriNetUnfolderBase]: 926/3029 cut-off events. [2023-08-26 15:50:11,685 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2023-08-26 15:50:11,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 15:50:11,686 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 15:50:11,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 15:50:11,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 15:50:11,686 INFO L85 PathProgramCache]: Analyzing trace with hash 2021665006, now seen corresponding path program 1 times [2023-08-26 15:50:11,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 15:50:11,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221979735] [2023-08-26 15:50:11,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 15:50:11,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 15:50:11,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:50:11,703 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 15:50:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 15:50:11,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 15:50:11,723 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 15:50:11,723 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 15:50:11,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 15:50:11,723 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 15:50:11,724 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-26 15:50:11,724 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 15:50:11,724 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-26 15:50:11,758 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-08-26 15:50:11,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 621 places, 696 transitions, 1686 flow