/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.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 01:31:26,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 01:31:26,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 01:31:26,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 01:31:26,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 01:31:26,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 01:31:26,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 01:31:26,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 01:31:26,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 01:31:26,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 01:31:26,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 01:31:26,704 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 01:31:26,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 01:31:26,706 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 01:31:26,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 01:31:26,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 01:31:26,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 01:31:26,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 01:31:26,711 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 01:31:26,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 01:31:26,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 01:31:26,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 01:31:26,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 01:31:26,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 01:31:26,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 01:31:26,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 01:31:26,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 01:31:26,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 01:31:26,728 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 01:31:26,753 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 01:31:26,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 01:31:26,753 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 01:31:26,754 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 01:31:26,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 01:31:26,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 01:31:26,754 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 01:31:26,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 01:31:26,755 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 01:31:26,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 01:31:26,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 01:31:26,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 01:31:26,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 01:31:26,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 01:31:26,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 01:31:26,756 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 01:31:26,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 01:31:26,756 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 01:31:26,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 01:31:26,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 01:31:26,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 01:31:26,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 01:31:26,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 01:31:26,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:31:26,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 01:31:26,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 01:31:26,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 01:31:26,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 01:31:26,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 01:31:26,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 01:31:26,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 01:31:26,757 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 01:31:26,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 01:31:26,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 01:31:26,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 01:31:26,965 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 01:31:26,965 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 01:31:26,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-01-28 01:31:27,875 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 01:31:28,036 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 01:31:28,037 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i [2023-01-28 01:31:28,045 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd127560f/e451d4bb8535497db10563a2280d27b0/FLAGf58432a01 [2023-01-28 01:31:28,054 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd127560f/e451d4bb8535497db10563a2280d27b0 [2023-01-28 01:31:28,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 01:31:28,056 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 01:31:28,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 01:31:28,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 01:31:28,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 01:31:28,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@575fc128 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28, skipping insertion in model container [2023-01-28 01:31:28,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 01:31:28,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 01:31:28,350 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2023-01-28 01:31:28,370 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:31:28,385 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 01:31:28,417 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_04-munge_racefree.i[30176,30189] [2023-01-28 01:31:28,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 01:31:28,461 INFO L208 MainTranslator]: Completed translation [2023-01-28 01:31:28,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28 WrapperNode [2023-01-28 01:31:28,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 01:31:28,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 01:31:28,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 01:31:28,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 01:31:28,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,489 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,512 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 202 [2023-01-28 01:31:28,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 01:31:28,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 01:31:28,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 01:31:28,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 01:31:28,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,540 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 01:31:28,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 01:31:28,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 01:31:28,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 01:31:28,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (1/1) ... [2023-01-28 01:31:28,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 01:31:28,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 01:31:28,574 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) [2023-01-28 01:31:28,591 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 [2023-01-28 01:31:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 01:31:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-01-28 01:31:28,599 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-01-28 01:31:28,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 01:31:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-28 01:31:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 01:31:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 01:31:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-01-28 01:31:28,600 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-01-28 01:31:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 01:31:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 01:31:28,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 01:31:28,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 01:31:28,601 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 01:31:28,736 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 01:31:28,739 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 01:31:28,970 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 01:31:28,975 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 01:31:28,975 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-01-28 01:31:28,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:31:28 BoogieIcfgContainer [2023-01-28 01:31:28,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 01:31:28,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 01:31:28,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 01:31:28,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 01:31:28,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 01:31:28" (1/3) ... [2023-01-28 01:31:28,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760002d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:31:28, skipping insertion in model container [2023-01-28 01:31:28,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 01:31:28" (2/3) ... [2023-01-28 01:31:28,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760002d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 01:31:28, skipping insertion in model container [2023-01-28 01:31:28,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 01:31:28" (3/3) ... [2023-01-28 01:31:28,981 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-01-28 01:31:28,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 01:31:28,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-28 01:31:28,992 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 01:31:29,047 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 01:31:29,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 200 transitions, 422 flow [2023-01-28 01:31:29,137 INFO L130 PetriNetUnfolder]: 58/358 cut-off events. [2023-01-28 01:31:29,137 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 01:31:29,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 358 events. 58/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1460 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 01:31:29,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 200 transitions, 422 flow [2023-01-28 01:31:29,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 200 transitions, 422 flow [2023-01-28 01:31:29,152 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:29,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 200 transitions, 422 flow [2023-01-28 01:31:29,160 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 200 transitions, 422 flow [2023-01-28 01:31:29,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 200 transitions, 422 flow [2023-01-28 01:31:29,210 INFO L130 PetriNetUnfolder]: 58/358 cut-off events. [2023-01-28 01:31:29,210 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-01-28 01:31:29,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 358 events. 58/358 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1460 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2023-01-28 01:31:29,221 INFO L119 LiptonReduction]: Number of co-enabled transitions 15876 [2023-01-28 01:31:31,735 INFO L134 LiptonReduction]: Checked pairs total: 27843 [2023-01-28 01:31:31,735 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-01-28 01:31:31,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:31:31,748 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7dc19cc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:31:31,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:31:31,751 INFO L130 PetriNetUnfolder]: 1/21 cut-off events. [2023-01-28 01:31:31,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 01:31:31,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:31:31,752 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-01-28 01:31:31,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:31:31,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:31:31,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1882836693, now seen corresponding path program 1 times [2023-01-28 01:31:31,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:31:31,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237203518] [2023-01-28 01:31:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:31:31,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:31:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:31,832 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:31:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:31,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:31:31,860 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:31:31,861 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:31:31,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:31:31,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 01:31:31,862 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:31:31,864 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:31:31,864 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:31:31,864 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-01-28 01:31:31,899 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-01-28 01:31:31,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 314 transitions, 676 flow [2023-01-28 01:31:32,048 INFO L130 PetriNetUnfolder]: 197/1046 cut-off events. [2023-01-28 01:31:32,049 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-01-28 01:31:32,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 1046 events. 197/1046 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6040 event pairs, 1 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 647. Up to 32 conditions per place. [2023-01-28 01:31:32,058 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 314 transitions, 676 flow [2023-01-28 01:31:32,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 314 transitions, 676 flow [2023-01-28 01:31:32,067 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:32,068 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 263 places, 314 transitions, 676 flow [2023-01-28 01:31:32,068 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 263 places, 314 transitions, 676 flow [2023-01-28 01:31:32,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 314 transitions, 676 flow [2023-01-28 01:31:32,201 INFO L130 PetriNetUnfolder]: 197/1046 cut-off events. [2023-01-28 01:31:32,202 INFO L131 PetriNetUnfolder]: For 72/75 co-relation queries the response was YES. [2023-01-28 01:31:32,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 1046 events. 197/1046 cut-off events. For 72/75 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 6040 event pairs, 1 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 647. Up to 32 conditions per place. [2023-01-28 01:31:32,246 INFO L119 LiptonReduction]: Number of co-enabled transitions 57240 [2023-01-28 01:31:35,017 INFO L134 LiptonReduction]: Checked pairs total: 124201 [2023-01-28 01:31:35,018 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-01-28 01:31:35,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:31:35,020 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;@7dc19cc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:31:35,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:31:35,025 INFO L130 PetriNetUnfolder]: 32/126 cut-off events. [2023-01-28 01:31:35,026 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-28 01:31:35,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:31:35,026 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-01-28 01:31:35,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:31:35,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:31:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash 196679887, now seen corresponding path program 1 times [2023-01-28 01:31:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:31:35,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197410402] [2023-01-28 01:31:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:31:35,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:31:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:35,043 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:31:35,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:35,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:31:35,062 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:31:35,062 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:31:35,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:31:35,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 01:31:35,062 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:31:35,063 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:31:35,063 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:31:35,063 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-01-28 01:31:35,090 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-01-28 01:31:35,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 428 transitions, 934 flow [2023-01-28 01:31:35,667 INFO L130 PetriNetUnfolder]: 664/2996 cut-off events. [2023-01-28 01:31:35,667 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-01-28 01:31:35,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3447 conditions, 2996 events. 664/2996 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 21378 event pairs, 32 based on Foata normal form. 0/2505 useless extension candidates. Maximal degree in co-relation 1924. Up to 192 conditions per place. [2023-01-28 01:31:35,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 353 places, 428 transitions, 934 flow [2023-01-28 01:31:35,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 353 places, 428 transitions, 934 flow [2023-01-28 01:31:35,726 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:35,729 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 353 places, 428 transitions, 934 flow [2023-01-28 01:31:35,729 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 353 places, 428 transitions, 934 flow [2023-01-28 01:31:35,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 353 places, 428 transitions, 934 flow [2023-01-28 01:31:36,241 INFO L130 PetriNetUnfolder]: 664/2996 cut-off events. [2023-01-28 01:31:36,241 INFO L131 PetriNetUnfolder]: For 419/431 co-relation queries the response was YES. [2023-01-28 01:31:36,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3447 conditions, 2996 events. 664/2996 cut-off events. For 419/431 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 21378 event pairs, 32 based on Foata normal form. 0/2505 useless extension candidates. Maximal degree in co-relation 1924. Up to 192 conditions per place. [2023-01-28 01:31:36,371 INFO L119 LiptonReduction]: Number of co-enabled transitions 124092 [2023-01-28 01:31:39,895 INFO L134 LiptonReduction]: Checked pairs total: 308591 [2023-01-28 01:31:39,895 INFO L136 LiptonReduction]: Total number of compositions: 280 [2023-01-28 01:31:39,896 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:31:39,897 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;@7dc19cc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:31:39,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:31:39,909 INFO L130 PetriNetUnfolder]: 73/265 cut-off events. [2023-01-28 01:31:39,909 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2023-01-28 01:31:39,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:31:39,909 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-01-28 01:31:39,909 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:31:39,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:31:39,909 INFO L85 PathProgramCache]: Analyzing trace with hash 218387480, now seen corresponding path program 1 times [2023-01-28 01:31:39,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:31:39,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126274847] [2023-01-28 01:31:39,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:31:39,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:31:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:39,925 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:31:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:39,939 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:31:39,939 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:31:39,940 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:31:39,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:31:39,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 01:31:39,940 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:31:39,940 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:31:39,940 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:31:39,940 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-01-28 01:31:39,968 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2023-01-28 01:31:39,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 542 transitions, 1196 flow [2023-01-28 01:31:42,011 INFO L130 PetriNetUnfolder]: 2647/9880 cut-off events. [2023-01-28 01:31:42,011 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-01-28 01:31:42,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12045 conditions, 9880 events. 2647/9880 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 86783 event pairs, 313 based on Foata normal form. 0/8484 useless extension candidates. Maximal degree in co-relation 6275. Up to 1024 conditions per place. [2023-01-28 01:31:42,171 INFO L82 GeneralOperation]: Start removeDead. Operand has 443 places, 542 transitions, 1196 flow [2023-01-28 01:31:42,283 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 443 places, 542 transitions, 1196 flow [2023-01-28 01:31:42,283 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:31:42,283 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 443 places, 542 transitions, 1196 flow [2023-01-28 01:31:42,284 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 443 places, 542 transitions, 1196 flow [2023-01-28 01:31:42,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 443 places, 542 transitions, 1196 flow [2023-01-28 01:31:44,500 INFO L130 PetriNetUnfolder]: 2647/9880 cut-off events. [2023-01-28 01:31:44,501 INFO L131 PetriNetUnfolder]: For 2144/2159 co-relation queries the response was YES. [2023-01-28 01:31:44,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12045 conditions, 9880 events. 2647/9880 cut-off events. For 2144/2159 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 86783 event pairs, 313 based on Foata normal form. 0/8484 useless extension candidates. Maximal degree in co-relation 6275. Up to 1024 conditions per place. [2023-01-28 01:31:45,085 INFO L119 LiptonReduction]: Number of co-enabled transitions 216432 [2023-01-28 01:31:49,262 INFO L134 LiptonReduction]: Checked pairs total: 554114 [2023-01-28 01:31:49,262 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-01-28 01:31:49,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:31:49,264 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;@7dc19cc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:31:49,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:31:49,286 INFO L130 PetriNetUnfolder]: 128/456 cut-off events. [2023-01-28 01:31:49,287 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-01-28 01:31:49,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:31:49,287 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-01-28 01:31:49,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:31:49,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:31:49,287 INFO L85 PathProgramCache]: Analyzing trace with hash -799960040, now seen corresponding path program 1 times [2023-01-28 01:31:49,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:31:49,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116728882] [2023-01-28 01:31:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:31:49,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:31:49,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:49,322 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:31:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:31:49,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:31:49,340 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:31:49,340 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:31:49,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:31:49,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 01:31:49,340 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:31:49,341 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:31:49,341 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:31:49,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-01-28 01:31:49,385 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2023-01-28 01:31:49,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 656 transitions, 1462 flow [2023-01-28 01:32:00,076 INFO L130 PetriNetUnfolder]: 11762/37250 cut-off events. [2023-01-28 01:32:00,076 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-01-28 01:32:00,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47676 conditions, 37250 events. 11762/37250 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 400008 event pairs, 2148 based on Foata normal form. 0/32615 useless extension candidates. Maximal degree in co-relation 23645. Up to 5120 conditions per place. [2023-01-28 01:32:00,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 533 places, 656 transitions, 1462 flow [2023-01-28 01:32:01,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 533 places, 656 transitions, 1462 flow [2023-01-28 01:32:01,631 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:32:01,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 533 places, 656 transitions, 1462 flow [2023-01-28 01:32:01,631 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 533 places, 656 transitions, 1462 flow [2023-01-28 01:32:01,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 533 places, 656 transitions, 1462 flow [2023-01-28 01:32:11,909 INFO L130 PetriNetUnfolder]: 11762/37250 cut-off events. [2023-01-28 01:32:11,909 INFO L131 PetriNetUnfolder]: For 10450/10468 co-relation queries the response was YES. [2023-01-28 01:32:12,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47676 conditions, 37250 events. 11762/37250 cut-off events. For 10450/10468 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 400008 event pairs, 2148 based on Foata normal form. 0/32615 useless extension candidates. Maximal degree in co-relation 23645. Up to 5120 conditions per place. [2023-01-28 01:32:15,637 INFO L119 LiptonReduction]: Number of co-enabled transitions 334260 [2023-01-28 01:32:20,097 INFO L134 LiptonReduction]: Checked pairs total: 887315 [2023-01-28 01:32:20,097 INFO L136 LiptonReduction]: Total number of compositions: 418 [2023-01-28 01:32:20,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:32:20,099 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;@7dc19cc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:32:20,099 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:32:20,145 INFO L130 PetriNetUnfolder]: 225/769 cut-off events. [2023-01-28 01:32:20,146 INFO L131 PetriNetUnfolder]: For 165/165 co-relation queries the response was YES. [2023-01-28 01:32:20,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:32:20,146 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:32:20,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:32:20,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:32:20,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1795713948, now seen corresponding path program 1 times [2023-01-28 01:32:20,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:32:20,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064888840] [2023-01-28 01:32:20,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:32:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:32:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:20,163 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:32:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:32:20,179 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:32:20,179 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:32:20,180 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:32:20,180 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:32:20,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 01:32:20,180 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:32:20,180 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:32:20,180 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:32:20,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-01-28 01:32:20,216 INFO L144 ThreadInstanceAdder]: Constructed 24 joinOtherThreadTransitions. [2023-01-28 01:32:20,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 623 places, 770 transitions, 1732 flow [2023-01-28 01:33:17,595 INFO L130 PetriNetUnfolder]: 53929/150770 cut-off events. [2023-01-28 01:33:17,596 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-01-28 01:33:26,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200199 conditions, 150770 events. 53929/150770 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 1866. Compared 1906485 event pairs, 12465 based on Foata normal form. 0/133650 useless extension candidates. Maximal degree in co-relation 97243. Up to 24576 conditions per place. [2023-01-28 01:33:26,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 623 places, 770 transitions, 1732 flow [2023-01-28 01:33:31,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 623 places, 770 transitions, 1732 flow [2023-01-28 01:33:31,225 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 01:33:31,225 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 623 places, 770 transitions, 1732 flow [2023-01-28 01:33:31,226 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 623 places, 770 transitions, 1732 flow [2023-01-28 01:33:31,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 623 places, 770 transitions, 1732 flow [2023-01-28 01:34:24,781 INFO L130 PetriNetUnfolder]: 53929/150770 cut-off events. [2023-01-28 01:34:24,782 INFO L131 PetriNetUnfolder]: For 49552/49573 co-relation queries the response was YES. [2023-01-28 01:34:33,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200199 conditions, 150770 events. 53929/150770 cut-off events. For 49552/49573 co-relation queries the response was YES. Maximal size of possible extension queue 1866. Compared 1906485 event pairs, 12465 based on Foata normal form. 0/133650 useless extension candidates. Maximal degree in co-relation 97243. Up to 24576 conditions per place. [2023-01-28 01:34:54,500 INFO L119 LiptonReduction]: Number of co-enabled transitions 477576 [2023-01-28 01:34:59,844 INFO L134 LiptonReduction]: Checked pairs total: 1153240 [2023-01-28 01:34:59,844 INFO L136 LiptonReduction]: Total number of compositions: 486 [2023-01-28 01:34:59,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-01-28 01:34:59,846 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;@7dc19cc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 01:34:59,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-28 01:34:59,936 INFO L130 PetriNetUnfolder]: 355/1173 cut-off events. [2023-01-28 01:34:59,936 INFO L131 PetriNetUnfolder]: For 324/324 co-relation queries the response was YES. [2023-01-28 01:34:59,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 01:34:59,936 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 01:34:59,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 01:34:59,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 01:34:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash -494352450, now seen corresponding path program 1 times [2023-01-28 01:34:59,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 01:34:59,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254608564] [2023-01-28 01:34:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 01:34:59,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 01:34:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:59,980 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 01:34:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 01:34:59,999 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 01:34:59,999 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 01:34:59,999 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-01-28 01:34:59,999 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-28 01:34:59,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 01:35:00,000 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-01-28 01:35:00,000 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-01-28 01:35:00,000 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-01-28 01:35:00,000 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-01-28 01:35:00,054 INFO L144 ThreadInstanceAdder]: Constructed 28 joinOtherThreadTransitions. [2023-01-28 01:35:00,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 713 places, 884 transitions, 2006 flow