./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:33:10,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:33:10,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:33:10,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:33:10,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:33:10,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:33:10,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:33:11,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:33:11,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:33:11,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:33:11,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:33:11,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:33:11,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:33:11,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:33:11,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:33:11,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:33:11,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:33:11,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:33:11,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:33:11,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:33:11,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:33:11,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:33:11,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:33:11,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:33:11,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:33:11,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:33:11,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:33:11,046 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:33:11,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:33:11,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:33:11,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:33:11,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:33:11,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:33:11,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:33:11,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:33:11,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:33:11,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:33:11,056 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:33:11,056 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:33:11,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:33:11,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:33:11,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:33:11,098 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:33:11,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:33:11,100 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:33:11,100 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:33:11,101 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:33:11,101 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:33:11,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:33:11,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:33:11,102 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:33:11,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:33:11,103 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:33:11,104 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:33:11,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:33:11,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:33:11,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:33:11,104 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:33:11,105 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:33:11,105 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:33:11,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:33:11,105 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:33:11,105 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:33:11,106 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:33:11,106 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:33:11,106 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:33:11,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:33:11,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:33:11,107 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:33:11,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:33:11,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:33:11,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:33:11,107 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:33:11,108 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:33:11,108 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:33:11,108 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:33:11,108 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 265daba2b5ad7b4578f16c23ab641f7a5441c3a3894a2482737cba7b750ee6df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:33:11,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:33:11,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:33:11,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:33:11,446 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:33:11,446 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:33:11,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-09-01 00:33:12,686 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:33:13,003 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:33:13,004 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_11-ptr_racing.i [2023-09-01 00:33:13,027 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c40f69538/32d99debbd3d4440bd2ceb0f9a1ae0c0/FLAG786217368 [2023-09-01 00:33:13,046 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c40f69538/32d99debbd3d4440bd2ceb0f9a1ae0c0 [2023-09-01 00:33:13,048 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:33:13,050 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:33:13,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:33:13,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:33:13,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:33:13,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5251691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13, skipping insertion in model container [2023-09-01 00:33:13,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:33:13,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:33:13,406 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_11-ptr_racing.i[30176,30189] [2023-09-01 00:33:13,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:33:13,449 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:33:13,501 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_11-ptr_racing.i[30176,30189] [2023-09-01 00:33:13,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:33:13,564 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:33:13,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13 WrapperNode [2023-09-01 00:33:13,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:33:13,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:33:13,566 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:33:13,566 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:33:13,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,598 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,623 INFO L138 Inliner]: procedures = 170, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-09-01 00:33:13,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:33:13,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:33:13,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:33:13,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:33:13,635 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,666 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:33:13,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:33:13,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:33:13,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:33:13,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (1/1) ... [2023-09-01 00:33:13,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:33:13,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:33:13,709 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) [2023-09-01 00:33:13,716 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 [2023-09-01 00:33:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:33:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:33:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:33:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:33:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:33:13,742 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:33:13,743 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:33:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:33:13,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:33:13,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:33:13,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:33:13,745 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:33:13,887 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:33:13,889 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:33:14,174 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:33:14,180 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:33:14,180 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 00:33:14,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:33:14 BoogieIcfgContainer [2023-09-01 00:33:14,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:33:14,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:33:14,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:33:14,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:33:14,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:33:13" (1/3) ... [2023-09-01 00:33:14,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eacc1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:33:14, skipping insertion in model container [2023-09-01 00:33:14,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:33:13" (2/3) ... [2023-09-01 00:33:14,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eacc1d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:33:14, skipping insertion in model container [2023-09-01 00:33:14,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:33:14" (3/3) ... [2023-09-01 00:33:14,190 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_11-ptr_racing.i [2023-09-01 00:33:14,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:33:14,206 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 00:33:14,206 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:33:14,324 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:33:14,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 133 transitions, 274 flow [2023-09-01 00:33:14,451 INFO L130 PetriNetUnfolder]: 17/177 cut-off events. [2023-09-01 00:33:14,451 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:33:14,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 177 events. 17/177 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 516 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-09-01 00:33:14,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 133 transitions, 274 flow [2023-09-01 00:33:14,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 128 transitions, 261 flow [2023-09-01 00:33:14,470 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:14,478 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 128 transitions, 261 flow [2023-09-01 00:33:14,481 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 128 transitions, 261 flow [2023-09-01 00:33:14,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 128 transitions, 261 flow [2023-09-01 00:33:14,512 INFO L130 PetriNetUnfolder]: 16/172 cut-off events. [2023-09-01 00:33:14,513 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:33:14,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 172 events. 16/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 497 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-09-01 00:33:14,517 INFO L119 LiptonReduction]: Number of co-enabled transitions 4100 [2023-09-01 00:33:18,058 INFO L134 LiptonReduction]: Checked pairs total: 8344 [2023-09-01 00:33:18,058 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-09-01 00:33:18,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:18,075 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:18,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:33:18,084 INFO L130 PetriNetUnfolder]: 2/36 cut-off events. [2023-09-01 00:33:18,084 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:33:18,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:18,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:33:18,085 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:18,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1982961010, now seen corresponding path program 1 times [2023-09-01 00:33:18,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:18,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720439838] [2023-09-01 00:33:18,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:18,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:18,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:18,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:18,341 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:18,343 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:33:18,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:33:18,344 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:18,351 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:33:18,352 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:18,352 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:33:18,398 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:33:18,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 176 transitions, 370 flow [2023-09-01 00:33:18,458 INFO L130 PetriNetUnfolder]: 31/293 cut-off events. [2023-09-01 00:33:18,459 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:33:18,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 31/293 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1034 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 179. Up to 8 conditions per place. [2023-09-01 00:33:18,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 176 transitions, 370 flow [2023-09-01 00:33:18,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 176 transitions, 370 flow [2023-09-01 00:33:18,468 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:18,468 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 176 transitions, 370 flow [2023-09-01 00:33:18,468 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 176 transitions, 370 flow [2023-09-01 00:33:18,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 176 transitions, 370 flow [2023-09-01 00:33:18,514 INFO L130 PetriNetUnfolder]: 31/293 cut-off events. [2023-09-01 00:33:18,515 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:33:18,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 31/293 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1034 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 179. Up to 8 conditions per place. [2023-09-01 00:33:18,525 INFO L119 LiptonReduction]: Number of co-enabled transitions 12464 [2023-09-01 00:33:22,158 INFO L134 LiptonReduction]: Checked pairs total: 31195 [2023-09-01 00:33:22,159 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-09-01 00:33:22,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:22,162 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:22,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:33:22,169 INFO L130 PetriNetUnfolder]: 10/84 cut-off events. [2023-09-01 00:33:22,170 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:33:22,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:22,170 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:33:22,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:22,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:22,171 INFO L85 PathProgramCache]: Analyzing trace with hash 164843314, now seen corresponding path program 1 times [2023-09-01 00:33:22,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:22,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119381188] [2023-09-01 00:33:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:22,195 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:22,216 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:22,217 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:22,217 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:33:22,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:33:22,217 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:22,218 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:33:22,218 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:22,218 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:33:22,243 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:33:22,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 219 transitions, 468 flow [2023-09-01 00:33:22,317 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2023-09-01 00:33:22,318 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:33:22,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1779 event pairs, 1 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-09-01 00:33:22,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 219 transitions, 468 flow [2023-09-01 00:33:22,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 219 transitions, 468 flow [2023-09-01 00:33:22,326 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:22,326 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 219 transitions, 468 flow [2023-09-01 00:33:22,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 219 transitions, 468 flow [2023-09-01 00:33:22,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 219 transitions, 468 flow [2023-09-01 00:33:22,377 INFO L130 PetriNetUnfolder]: 50/450 cut-off events. [2023-09-01 00:33:22,377 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:33:22,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 450 events. 50/450 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1779 event pairs, 1 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-09-01 00:33:22,401 INFO L119 LiptonReduction]: Number of co-enabled transitions 24108 [2023-09-01 00:33:26,314 INFO L134 LiptonReduction]: Checked pairs total: 64553 [2023-09-01 00:33:26,315 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-09-01 00:33:26,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:26,317 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:26,317 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:33:26,328 INFO L130 PetriNetUnfolder]: 19/130 cut-off events. [2023-09-01 00:33:26,328 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:33:26,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:26,328 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:33:26,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:26,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:26,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1298478021, now seen corresponding path program 1 times [2023-09-01 00:33:26,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:26,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428124617] [2023-09-01 00:33:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:26,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:26,368 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:26,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:26,405 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:26,406 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:33:26,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:33:26,406 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:26,407 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:33:26,407 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:26,407 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:33:26,442 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:33:26,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 262 transitions, 568 flow [2023-09-01 00:33:26,539 INFO L130 PetriNetUnfolder]: 81/691 cut-off events. [2023-09-01 00:33:26,540 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:33:26,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 691 events. 81/691 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3111 event pairs, 6 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 470. Up to 32 conditions per place. [2023-09-01 00:33:26,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 262 transitions, 568 flow [2023-09-01 00:33:26,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 262 transitions, 568 flow [2023-09-01 00:33:26,552 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:26,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 238 places, 262 transitions, 568 flow [2023-09-01 00:33:26,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 238 places, 262 transitions, 568 flow [2023-09-01 00:33:26,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 238 places, 262 transitions, 568 flow [2023-09-01 00:33:26,639 INFO L130 PetriNetUnfolder]: 81/691 cut-off events. [2023-09-01 00:33:26,639 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:33:26,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 746 conditions, 691 events. 81/691 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3111 event pairs, 6 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 470. Up to 32 conditions per place. [2023-09-01 00:33:26,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 39360 [2023-09-01 00:33:30,700 INFO L134 LiptonReduction]: Checked pairs total: 113240 [2023-09-01 00:33:30,701 INFO L136 LiptonReduction]: Total number of compositions: 217 [2023-09-01 00:33:30,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:30,703 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:30,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:33:30,719 INFO L130 PetriNetUnfolder]: 29/189 cut-off events. [2023-09-01 00:33:30,719 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:33:30,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:30,720 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:33:30,720 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:30,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:30,721 INFO L85 PathProgramCache]: Analyzing trace with hash 789015012, now seen corresponding path program 1 times [2023-09-01 00:33:30,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:30,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941271616] [2023-09-01 00:33:30,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:30,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:30,756 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:30,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:30,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:30,801 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:30,802 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:33:30,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:33:30,802 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:30,802 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:33:30,803 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:30,803 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:33:30,834 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:33:30,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 305 transitions, 670 flow [2023-09-01 00:33:31,019 INFO L130 PetriNetUnfolder]: 140/1104 cut-off events. [2023-09-01 00:33:31,019 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:33:31,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 1104 events. 140/1104 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5708 event pairs, 23 based on Foata normal form. 0/814 useless extension candidates. Maximal degree in co-relation 736. Up to 80 conditions per place. [2023-09-01 00:33:31,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 305 transitions, 670 flow [2023-09-01 00:33:31,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 305 transitions, 670 flow [2023-09-01 00:33:31,038 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:31,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 305 transitions, 670 flow [2023-09-01 00:33:31,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 305 transitions, 670 flow [2023-09-01 00:33:31,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 305 transitions, 670 flow [2023-09-01 00:33:31,221 INFO L130 PetriNetUnfolder]: 140/1104 cut-off events. [2023-09-01 00:33:31,222 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:33:31,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 1104 events. 140/1104 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5708 event pairs, 23 based on Foata normal form. 0/814 useless extension candidates. Maximal degree in co-relation 736. Up to 80 conditions per place. [2023-09-01 00:33:31,272 INFO L119 LiptonReduction]: Number of co-enabled transitions 58220 [2023-09-01 00:33:35,604 INFO L134 LiptonReduction]: Checked pairs total: 170338 [2023-09-01 00:33:35,604 INFO L136 LiptonReduction]: Total number of compositions: 234 [2023-09-01 00:33:35,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:35,607 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:35,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:33:35,630 INFO L130 PetriNetUnfolder]: 41/262 cut-off events. [2023-09-01 00:33:35,631 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:33:35,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:35,631 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:33:35,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:35,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1640402578, now seen corresponding path program 1 times [2023-09-01 00:33:35,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:35,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348515341] [2023-09-01 00:33:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:35,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:35,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:35,706 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:35,706 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:35,707 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:33:35,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:33:35,707 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:35,708 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:33:35,708 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:35,708 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:33:35,742 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:33:35,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 348 transitions, 774 flow [2023-09-01 00:33:36,113 INFO L130 PetriNetUnfolder]: 263/1869 cut-off events. [2023-09-01 00:33:36,114 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:33:36,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1869 events. 263/1869 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11719 event pairs, 72 based on Foata normal form. 0/1395 useless extension candidates. Maximal degree in co-relation 1203. Up to 192 conditions per place. [2023-09-01 00:33:36,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 348 transitions, 774 flow [2023-09-01 00:33:36,149 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 348 transitions, 774 flow [2023-09-01 00:33:36,149 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:36,150 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 348 transitions, 774 flow [2023-09-01 00:33:36,150 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 348 transitions, 774 flow [2023-09-01 00:33:36,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 348 transitions, 774 flow [2023-09-01 00:33:36,485 INFO L130 PetriNetUnfolder]: 263/1869 cut-off events. [2023-09-01 00:33:36,486 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:33:36,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2101 conditions, 1869 events. 263/1869 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11719 event pairs, 72 based on Foata normal form. 0/1395 useless extension candidates. Maximal degree in co-relation 1203. Up to 192 conditions per place. [2023-09-01 00:33:36,634 INFO L119 LiptonReduction]: Number of co-enabled transitions 80688 [2023-09-01 00:33:41,382 INFO L134 LiptonReduction]: Checked pairs total: 271321 [2023-09-01 00:33:41,382 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-09-01 00:33:41,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:41,384 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:41,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:33:41,415 INFO L130 PetriNetUnfolder]: 56/341 cut-off events. [2023-09-01 00:33:41,416 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:33:41,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:41,416 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:33:41,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:41,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1400261138, now seen corresponding path program 1 times [2023-09-01 00:33:41,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:41,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685285098] [2023-09-01 00:33:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:41,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:41,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:41,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:41,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:41,462 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:33:41,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:33:41,463 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:41,463 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:33:41,463 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:41,464 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:33:41,494 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:33:41,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 391 transitions, 880 flow [2023-09-01 00:33:42,154 INFO L130 PetriNetUnfolder]: 530/3354 cut-off events. [2023-09-01 00:33:42,154 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:33:42,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3852 conditions, 3354 events. 530/3354 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25126 event pairs, 201 based on Foata normal form. 0/2536 useless extension candidates. Maximal degree in co-relation 2087. Up to 448 conditions per place. [2023-09-01 00:33:42,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 391 transitions, 880 flow [2023-09-01 00:33:42,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 352 places, 391 transitions, 880 flow [2023-09-01 00:33:42,260 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:42,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 352 places, 391 transitions, 880 flow [2023-09-01 00:33:42,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 352 places, 391 transitions, 880 flow [2023-09-01 00:33:42,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 391 transitions, 880 flow [2023-09-01 00:33:42,866 INFO L130 PetriNetUnfolder]: 530/3354 cut-off events. [2023-09-01 00:33:42,866 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:33:42,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3852 conditions, 3354 events. 530/3354 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 25126 event pairs, 201 based on Foata normal form. 0/2536 useless extension candidates. Maximal degree in co-relation 2087. Up to 448 conditions per place. [2023-09-01 00:33:43,068 INFO L119 LiptonReduction]: Number of co-enabled transitions 106764 [2023-09-01 00:33:48,572 INFO L134 LiptonReduction]: Checked pairs total: 362585 [2023-09-01 00:33:48,572 INFO L136 LiptonReduction]: Total number of compositions: 305 [2023-09-01 00:33:48,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:48,574 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:48,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:33:48,620 INFO L130 PetriNetUnfolder]: 76/452 cut-off events. [2023-09-01 00:33:48,620 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:33:48,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:48,620 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:33:48,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:48,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:48,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1571024181, now seen corresponding path program 1 times [2023-09-01 00:33:48,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:48,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103545474] [2023-09-01 00:33:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:48,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:48,643 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:48,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:48,661 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:48,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:33:48,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:33:48,662 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:48,662 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:33:48,663 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:48,663 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:33:48,698 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:33:48,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 434 transitions, 988 flow [2023-09-01 00:33:50,326 INFO L130 PetriNetUnfolder]: 1117/6311 cut-off events. [2023-09-01 00:33:50,327 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:33:50,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 6311 events. 1117/6311 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 55899 event pairs, 522 based on Foata normal form. 0/4829 useless extension candidates. Maximal degree in co-relation 3836. Up to 1024 conditions per place. [2023-09-01 00:33:50,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 390 places, 434 transitions, 988 flow [2023-09-01 00:33:50,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 390 places, 434 transitions, 988 flow [2023-09-01 00:33:50,479 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:33:50,479 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 390 places, 434 transitions, 988 flow [2023-09-01 00:33:50,479 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 390 places, 434 transitions, 988 flow [2023-09-01 00:33:50,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 434 transitions, 988 flow [2023-09-01 00:33:51,868 INFO L130 PetriNetUnfolder]: 1117/6311 cut-off events. [2023-09-01 00:33:51,869 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:33:51,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 6311 events. 1117/6311 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 55899 event pairs, 522 based on Foata normal form. 0/4829 useless extension candidates. Maximal degree in co-relation 3836. Up to 1024 conditions per place. [2023-09-01 00:33:52,266 INFO L119 LiptonReduction]: Number of co-enabled transitions 136448 [2023-09-01 00:33:57,818 INFO L134 LiptonReduction]: Checked pairs total: 472753 [2023-09-01 00:33:57,818 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-09-01 00:33:57,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:33:57,820 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:33:57,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:33:57,875 INFO L130 PetriNetUnfolder]: 105/596 cut-off events. [2023-09-01 00:33:57,875 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:33:57,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:33:57,876 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:33:57,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:33:57,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:33:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1012078639, now seen corresponding path program 1 times [2023-09-01 00:33:57,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:33:57,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954037405] [2023-09-01 00:33:57,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:33:57,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:33:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:57,896 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:33:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:33:57,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:33:57,916 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:33:57,916 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:33:57,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:33:57,916 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:33:57,917 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:33:57,917 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:33:57,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:33:57,982 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:33:57,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 477 transitions, 1098 flow [2023-09-01 00:34:00,712 INFO L130 PetriNetUnfolder]: 2408/12276 cut-off events. [2023-09-01 00:34:00,712 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:34:00,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14653 conditions, 12276 events. 2408/12276 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 124784 event pairs, 1291 based on Foata normal form. 0/9490 useless extension candidates. Maximal degree in co-relation 7378. Up to 2304 conditions per place. [2023-09-01 00:34:00,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 428 places, 477 transitions, 1098 flow [2023-09-01 00:34:00,947 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 428 places, 477 transitions, 1098 flow [2023-09-01 00:34:00,947 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:00,947 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 428 places, 477 transitions, 1098 flow [2023-09-01 00:34:00,947 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 428 places, 477 transitions, 1098 flow [2023-09-01 00:34:00,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 428 places, 477 transitions, 1098 flow [2023-09-01 00:34:03,647 INFO L130 PetriNetUnfolder]: 2408/12276 cut-off events. [2023-09-01 00:34:03,647 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:34:03,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14653 conditions, 12276 events. 2408/12276 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 124784 event pairs, 1291 based on Foata normal form. 0/9490 useless extension candidates. Maximal degree in co-relation 7378. Up to 2304 conditions per place. [2023-09-01 00:34:04,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 169740 [2023-09-01 00:34:10,201 INFO L134 LiptonReduction]: Checked pairs total: 537164 [2023-09-01 00:34:10,202 INFO L136 LiptonReduction]: Total number of compositions: 372 [2023-09-01 00:34:10,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:10,204 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:10,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:10,281 INFO L130 PetriNetUnfolder]: 150/797 cut-off events. [2023-09-01 00:34:10,281 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:34:10,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:10,281 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:10,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:10,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:10,282 INFO L85 PathProgramCache]: Analyzing trace with hash -290620001, now seen corresponding path program 1 times [2023-09-01 00:34:10,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:10,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25422706] [2023-09-01 00:34:10,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:10,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:10,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:10,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:10,331 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:10,332 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:10,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:34:10,333 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:10,333 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:10,336 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:10,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:34:10,380 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:34:10,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 520 transitions, 1210 flow [2023-09-01 00:34:16,175 INFO L130 PetriNetUnfolder]: 5235/24385 cut-off events. [2023-09-01 00:34:16,175 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:34:16,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29591 conditions, 24385 events. 5235/24385 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 281570 event pairs, 3084 based on Foata normal form. 0/19015 useless extension candidates. Maximal degree in co-relation 14633. Up to 5120 conditions per place. [2023-09-01 00:34:16,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 466 places, 520 transitions, 1210 flow [2023-09-01 00:34:16,749 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 466 places, 520 transitions, 1210 flow [2023-09-01 00:34:16,749 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:16,749 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 466 places, 520 transitions, 1210 flow [2023-09-01 00:34:16,749 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 466 places, 520 transitions, 1210 flow [2023-09-01 00:34:16,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 466 places, 520 transitions, 1210 flow [2023-09-01 00:34:22,753 INFO L130 PetriNetUnfolder]: 5235/24385 cut-off events. [2023-09-01 00:34:22,754 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:34:23,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29591 conditions, 24385 events. 5235/24385 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 281570 event pairs, 3084 based on Foata normal form. 0/19015 useless extension candidates. Maximal degree in co-relation 14633. Up to 5120 conditions per place. [2023-09-01 00:34:24,395 INFO L119 LiptonReduction]: Number of co-enabled transitions 206640 [2023-09-01 00:34:30,678 INFO L134 LiptonReduction]: Checked pairs total: 649448 [2023-09-01 00:34:30,678 INFO L136 LiptonReduction]: Total number of compositions: 394 [2023-09-01 00:34:30,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:30,680 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:30,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:30,803 INFO L130 PetriNetUnfolder]: 224/1101 cut-off events. [2023-09-01 00:34:30,803 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:34:30,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:30,803 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:30,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:30,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:30,804 INFO L85 PathProgramCache]: Analyzing trace with hash -680293562, now seen corresponding path program 1 times [2023-09-01 00:34:30,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:30,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487922257] [2023-09-01 00:34:30,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:30,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:30,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:30,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:30,894 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:30,894 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:30,894 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:30,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:34:30,895 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:30,895 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:30,895 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:30,895 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:34:30,947 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:34:30,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 563 transitions, 1324 flow [2023-09-01 00:34:44,196 INFO L130 PetriNetUnfolder]: 11390/49038 cut-off events. [2023-09-01 00:34:44,197 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:34:45,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60402 conditions, 49038 events. 11390/49038 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 631159 event pairs, 7181 based on Foata normal form. 0/38524 useless extension candidates. Maximal degree in co-relation 29569. Up to 11264 conditions per place. [2023-09-01 00:34:45,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 504 places, 563 transitions, 1324 flow [2023-09-01 00:34:45,973 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 504 places, 563 transitions, 1324 flow [2023-09-01 00:34:45,973 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:34:45,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 504 places, 563 transitions, 1324 flow [2023-09-01 00:34:45,974 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 504 places, 563 transitions, 1324 flow [2023-09-01 00:34:45,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 504 places, 563 transitions, 1324 flow [2023-09-01 00:34:58,848 INFO L130 PetriNetUnfolder]: 11390/49038 cut-off events. [2023-09-01 00:34:58,848 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:35:00,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60402 conditions, 49038 events. 11390/49038 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 631159 event pairs, 7181 based on Foata normal form. 0/38524 useless extension candidates. Maximal degree in co-relation 29569. Up to 11264 conditions per place. [2023-09-01 00:35:03,241 INFO L119 LiptonReduction]: Number of co-enabled transitions 247148 [2023-09-01 00:35:09,520 INFO L134 LiptonReduction]: Checked pairs total: 783831 [2023-09-01 00:35:09,520 INFO L136 LiptonReduction]: Total number of compositions: 428 [2023-09-01 00:35:09,521 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:35:09,521 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:35:09,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:35:09,694 INFO L130 PetriNetUnfolder]: 349/1566 cut-off events. [2023-09-01 00:35:09,695 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:35:09,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:35:09,695 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:35:09,695 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:35:09,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:35:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1982545502, now seen corresponding path program 1 times [2023-09-01 00:35:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:35:09,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083611211] [2023-09-01 00:35:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:35:09,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:35:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:09,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:35:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:35:09,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:35:09,761 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:35:09,761 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:35:09,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:35:09,762 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:35:09,763 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:35:09,763 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:35:09,763 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:35:09,814 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:35:09,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 542 places, 606 transitions, 1440 flow [2023-09-01 00:35:41,909 INFO L130 PetriNetUnfolder]: 24713/99291 cut-off events. [2023-09-01 00:35:41,910 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:35:46,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123982 conditions, 99291 events. 24713/99291 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 1390589 event pairs, 16398 based on Foata normal form. 0/78513 useless extension candidates. Maximal degree in co-relation 60378. Up to 24576 conditions per place. [2023-09-01 00:35:46,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 542 places, 606 transitions, 1440 flow [2023-09-01 00:35:48,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 542 places, 606 transitions, 1440 flow [2023-09-01 00:35:48,024 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:35:48,024 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 542 places, 606 transitions, 1440 flow [2023-09-01 00:35:48,024 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 542 places, 606 transitions, 1440 flow [2023-09-01 00:35:48,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 542 places, 606 transitions, 1440 flow [2023-09-01 00:36:16,175 INFO L130 PetriNetUnfolder]: 24713/99291 cut-off events. [2023-09-01 00:36:16,176 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:36:20,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123982 conditions, 99291 events. 24713/99291 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 1390589 event pairs, 16398 based on Foata normal form. 0/78513 useless extension candidates. Maximal degree in co-relation 60378. Up to 24576 conditions per place. [2023-09-01 00:36:29,556 INFO L119 LiptonReduction]: Number of co-enabled transitions 291264 [2023-09-01 00:36:36,163 INFO L134 LiptonReduction]: Checked pairs total: 1047387 [2023-09-01 00:36:36,163 INFO L136 LiptonReduction]: Total number of compositions: 454 [2023-09-01 00:36:36,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:36:36,165 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=All, 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;@31abaaa4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:36:36,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:36:36,418 INFO L130 PetriNetUnfolder]: 560/2270 cut-off events. [2023-09-01 00:36:36,418 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:36:36,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:36:36,419 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:36:36,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:36:36,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:36:36,419 INFO L85 PathProgramCache]: Analyzing trace with hash 20813248, now seen corresponding path program 1 times [2023-09-01 00:36:36,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:36:36,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122001282] [2023-09-01 00:36:36,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:36:36,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:36:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:36,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:36:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:36:36,467 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:36:36,468 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:36:36,468 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:36:36,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:36:36,468 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:36:36,469 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:36:36,469 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:36:36,469 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:36:36,577 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:36:36,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 580 places, 649 transitions, 1558 flow [2023-09-01 00:37:41,804 INFO L130 PetriNetUnfolder]: 53396/201768 cut-off events. [2023-09-01 00:37:41,805 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:37:51,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255147 conditions, 201768 events. 53396/201768 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4235. Compared 3093023 event pairs, 36879 based on Foata normal form. 0/160486 useless extension candidates. Maximal degree in co-relation 123956. Up to 53248 conditions per place. [2023-09-01 00:37:51,367 INFO L82 GeneralOperation]: Start removeDead. Operand has 580 places, 649 transitions, 1558 flow [2023-09-01 00:37:57,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 580 places, 649 transitions, 1558 flow [2023-09-01 00:37:57,611 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:37:57,611 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 580 places, 649 transitions, 1558 flow [2023-09-01 00:37:57,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 580 places, 649 transitions, 1558 flow [2023-09-01 00:37:57,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 580 places, 649 transitions, 1558 flow