./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.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_51-mutexptr_racefree.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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --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 00:45:03,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:45:03,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:45:03,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:45:03,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:45:03,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:45:03,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:45:03,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:45:03,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:45:03,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:45:03,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:45:03,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:45:03,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:45:03,694 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:45:03,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:45:03,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:45:03,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:45:03,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:45:03,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:45:03,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:45:03,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:45:03,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:45:03,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:45:03,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:45:03,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:45:03,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:45:03,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:45:03,729 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:45:03,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:45:03,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:45:03,731 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:45:03,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:45:03,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:45:03,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:45:03,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:45:03,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:45:03,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:45:03,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:45:03,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:45:03,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:45:03,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:45:03,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:45:03,776 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:45:03,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:45:03,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:45:03,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:45:03,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:45:03,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:45:03,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:45:03,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:45:03,780 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:45:03,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:45:03,781 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:45:03,781 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:45:03,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:45:03,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:45:03,782 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:45:03,782 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:45:03,782 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:45:03,782 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:45:03,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:45:03,783 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:45:03,783 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:45:03,783 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:45:03,783 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:45:03,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:45:03,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:45:03,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:45:03,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:45:03,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:45:03,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:45:03,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:45:03,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:45:03,785 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:45:03,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:45:03,786 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:45:03,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:45:04,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:45:04,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:45:04,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:45:04,105 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:45:04,106 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:45:04,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-09-01 00:45:05,323 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:45:05,572 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:45:05,573 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-09-01 00:45:05,587 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86d4e2993/e7f5f6a64fd14444aa3c4b0e56f4302b/FLAG3cc11c984 [2023-09-01 00:45:05,602 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86d4e2993/e7f5f6a64fd14444aa3c4b0e56f4302b [2023-09-01 00:45:05,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:45:05,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:45:05,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:45:05,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:45:05,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:45:05,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:45:05" (1/1) ... [2023-09-01 00:45:05,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5170cd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:05, skipping insertion in model container [2023-09-01 00:45:05,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:45:05" (1/1) ... [2023-09-01 00:45:05,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:45:05,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:45:05,914 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_51-mutexptr_racefree.i[30176,30189] [2023-09-01 00:45:05,938 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:45:05,953 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:45:06,004 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_51-mutexptr_racefree.i[30176,30189] [2023-09-01 00:45:06,010 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:45:06,058 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:45:06,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06 WrapperNode [2023-09-01 00:45:06,058 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:45:06,060 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:45:06,060 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:45:06,060 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:45:06,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,125 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-09-01 00:45:06,125 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:45:06,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:45:06,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:45:06,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:45:06,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,173 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:45:06,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:45:06,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:45:06,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:45:06,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (1/1) ... [2023-09-01 00:45:06,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:45:06,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:45:06,217 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 00:45:06,228 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 00:45:06,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:45:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:45:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:45:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:45:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:45:06,255 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:45:06,255 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:45:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:45:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:45:06,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:45:06,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:45:06,257 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 00:45:06,396 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:45:06,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:45:06,741 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:45:06,749 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:45:06,749 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 00:45:06,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:45:06 BoogieIcfgContainer [2023-09-01 00:45:06,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:45:06,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:45:06,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:45:06,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:45:06,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:45:05" (1/3) ... [2023-09-01 00:45:06,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11eed074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:45:06, skipping insertion in model container [2023-09-01 00:45:06,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:06" (2/3) ... [2023-09-01 00:45:06,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11eed074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:45:06, skipping insertion in model container [2023-09-01 00:45:06,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:45:06" (3/3) ... [2023-09-01 00:45:06,759 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2023-09-01 00:45:06,774 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:45:06,774 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 00:45:06,775 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:45:06,855 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:45:06,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 141 transitions, 290 flow [2023-09-01 00:45:06,938 INFO L130 PetriNetUnfolder]: 17/186 cut-off events. [2023-09-01 00:45:06,938 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:45:06,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 186 events. 17/186 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 534 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2023-09-01 00:45:06,945 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 141 transitions, 290 flow [2023-09-01 00:45:06,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 136 transitions, 277 flow [2023-09-01 00:45:06,952 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:06,960 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 136 transitions, 277 flow [2023-09-01 00:45:06,963 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 136 transitions, 277 flow [2023-09-01 00:45:06,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 136 transitions, 277 flow [2023-09-01 00:45:07,006 INFO L130 PetriNetUnfolder]: 16/181 cut-off events. [2023-09-01 00:45:07,007 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:45:07,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 181 events. 16/181 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 520 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2023-09-01 00:45:07,015 INFO L119 LiptonReduction]: Number of co-enabled transitions 4386 [2023-09-01 00:45:10,895 INFO L134 LiptonReduction]: Checked pairs total: 9124 [2023-09-01 00:45:10,895 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-09-01 00:45:10,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:10,928 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:10,928 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:10,935 INFO L130 PetriNetUnfolder]: 3/29 cut-off events. [2023-09-01 00:45:10,936 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:45:10,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:10,936 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:45:10,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:10,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1266943289, now seen corresponding path program 1 times [2023-09-01 00:45:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:10,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793357731] [2023-09-01 00:45:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:11,068 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:11,154 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:11,156 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:11,157 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:11,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:45:11,159 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:11,162 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:11,163 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:11,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:45:11,198 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:45:11,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 186 transitions, 390 flow [2023-09-01 00:45:11,242 INFO L130 PetriNetUnfolder]: 31/305 cut-off events. [2023-09-01 00:45:11,242 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:45:11,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 305 events. 31/305 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1068 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 188. Up to 8 conditions per place. [2023-09-01 00:45:11,245 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 186 transitions, 390 flow [2023-09-01 00:45:11,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 186 transitions, 390 flow [2023-09-01 00:45:11,247 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:11,248 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 186 transitions, 390 flow [2023-09-01 00:45:11,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 186 transitions, 390 flow [2023-09-01 00:45:11,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 186 transitions, 390 flow [2023-09-01 00:45:11,280 INFO L130 PetriNetUnfolder]: 31/305 cut-off events. [2023-09-01 00:45:11,280 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:45:11,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319 conditions, 305 events. 31/305 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1068 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 188. Up to 8 conditions per place. [2023-09-01 00:45:11,301 INFO L119 LiptonReduction]: Number of co-enabled transitions 13416 [2023-09-01 00:45:15,086 INFO L134 LiptonReduction]: Checked pairs total: 34929 [2023-09-01 00:45:15,087 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-09-01 00:45:15,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:15,090 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:15,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:15,100 INFO L130 PetriNetUnfolder]: 14/89 cut-off events. [2023-09-01 00:45:15,102 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:45:15,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:15,103 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:45:15,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:15,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1856033089, now seen corresponding path program 1 times [2023-09-01 00:45:15,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:15,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091223335] [2023-09-01 00:45:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:15,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:15,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:15,211 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:15,211 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:15,211 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:15,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:45:15,213 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:15,214 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:15,215 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:15,217 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:45:15,254 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:45:15,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 231 transitions, 492 flow [2023-09-01 00:45:15,326 INFO L130 PetriNetUnfolder]: 50/465 cut-off events. [2023-09-01 00:45:15,326 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:45:15,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 465 events. 50/465 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1842 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 313. Up to 16 conditions per place. [2023-09-01 00:45:15,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 212 places, 231 transitions, 492 flow [2023-09-01 00:45:15,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 231 transitions, 492 flow [2023-09-01 00:45:15,337 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:15,337 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 231 transitions, 492 flow [2023-09-01 00:45:15,341 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 231 transitions, 492 flow [2023-09-01 00:45:15,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 231 transitions, 492 flow [2023-09-01 00:45:15,413 INFO L130 PetriNetUnfolder]: 50/465 cut-off events. [2023-09-01 00:45:15,414 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:45:15,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 465 events. 50/465 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1842 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 313. Up to 16 conditions per place. [2023-09-01 00:45:15,436 INFO L119 LiptonReduction]: Number of co-enabled transitions 26058 [2023-09-01 00:45:19,529 INFO L134 LiptonReduction]: Checked pairs total: 75150 [2023-09-01 00:45:19,529 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-09-01 00:45:19,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:19,532 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:19,533 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:19,543 INFO L130 PetriNetUnfolder]: 22/133 cut-off events. [2023-09-01 00:45:19,543 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:45:19,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:19,544 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:45:19,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:19,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:19,544 INFO L85 PathProgramCache]: Analyzing trace with hash -301117267, now seen corresponding path program 1 times [2023-09-01 00:45:19,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:19,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142187169] [2023-09-01 00:45:19,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:19,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:19,567 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:19,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:19,585 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:19,585 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:19,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:45:19,586 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:19,586 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:19,587 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:19,587 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:45:19,610 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:45:19,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 276 transitions, 596 flow [2023-09-01 00:45:19,721 INFO L130 PetriNetUnfolder]: 81/709 cut-off events. [2023-09-01 00:45:19,722 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:45:19,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 709 events. 81/709 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3162 event pairs, 6 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 485. Up to 32 conditions per place. [2023-09-01 00:45:19,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 276 transitions, 596 flow [2023-09-01 00:45:19,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 276 transitions, 596 flow [2023-09-01 00:45:19,734 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:19,735 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 276 transitions, 596 flow [2023-09-01 00:45:19,736 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 276 transitions, 596 flow [2023-09-01 00:45:19,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 276 transitions, 596 flow [2023-09-01 00:45:19,825 INFO L130 PetriNetUnfolder]: 81/709 cut-off events. [2023-09-01 00:45:19,825 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:45:19,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 709 events. 81/709 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3162 event pairs, 6 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 485. Up to 32 conditions per place. [2023-09-01 00:45:19,858 INFO L119 LiptonReduction]: Number of co-enabled transitions 42656 [2023-09-01 00:45:23,952 INFO L134 LiptonReduction]: Checked pairs total: 117106 [2023-09-01 00:45:23,952 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-09-01 00:45:23,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:23,955 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:23,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:23,971 INFO L130 PetriNetUnfolder]: 33/193 cut-off events. [2023-09-01 00:45:23,971 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:45:23,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:23,972 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:23,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:23,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash -179293689, now seen corresponding path program 1 times [2023-09-01 00:45:23,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:23,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488834276] [2023-09-01 00:45:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:23,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:24,004 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:24,047 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:24,047 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:24,048 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:24,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:45:24,048 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:24,048 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:24,049 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:24,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:45:24,083 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:45:24,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 321 transitions, 702 flow [2023-09-01 00:45:24,249 INFO L130 PetriNetUnfolder]: 140/1125 cut-off events. [2023-09-01 00:45:24,249 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:45:24,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 1125 events. 140/1125 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5832 event pairs, 23 based on Foata normal form. 0/835 useless extension candidates. Maximal degree in co-relation 754. Up to 80 conditions per place. [2023-09-01 00:45:24,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 321 transitions, 702 flow [2023-09-01 00:45:24,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 321 transitions, 702 flow [2023-09-01 00:45:24,282 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:24,282 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 321 transitions, 702 flow [2023-09-01 00:45:24,282 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 321 transitions, 702 flow [2023-09-01 00:45:24,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 321 transitions, 702 flow [2023-09-01 00:45:24,467 INFO L130 PetriNetUnfolder]: 140/1125 cut-off events. [2023-09-01 00:45:24,467 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:45:24,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 1125 events. 140/1125 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5832 event pairs, 23 based on Foata normal form. 0/835 useless extension candidates. Maximal degree in co-relation 754. Up to 80 conditions per place. [2023-09-01 00:45:24,536 INFO L119 LiptonReduction]: Number of co-enabled transitions 63210 [2023-09-01 00:45:29,256 INFO L134 LiptonReduction]: Checked pairs total: 194517 [2023-09-01 00:45:29,256 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-09-01 00:45:29,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:29,258 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:29,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:29,280 INFO L130 PetriNetUnfolder]: 46/263 cut-off events. [2023-09-01 00:45:29,280 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:45:29,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:29,280 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:29,281 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:29,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1203956523, now seen corresponding path program 1 times [2023-09-01 00:45:29,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:29,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34215417] [2023-09-01 00:45:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:29,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:29,302 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:29,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:29,321 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:29,321 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:29,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:45:29,322 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:29,322 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:29,322 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:29,322 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:45:29,350 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:45:29,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 366 transitions, 810 flow [2023-09-01 00:45:29,720 INFO L130 PetriNetUnfolder]: 263/1893 cut-off events. [2023-09-01 00:45:29,721 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:45:29,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 1893 events. 263/1893 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11810 event pairs, 72 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 1224. Up to 192 conditions per place. [2023-09-01 00:45:29,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 366 transitions, 810 flow [2023-09-01 00:45:29,781 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 366 transitions, 810 flow [2023-09-01 00:45:29,781 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:29,782 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 366 transitions, 810 flow [2023-09-01 00:45:29,782 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 366 transitions, 810 flow [2023-09-01 00:45:29,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 366 transitions, 810 flow [2023-09-01 00:45:30,109 INFO L130 PetriNetUnfolder]: 263/1893 cut-off events. [2023-09-01 00:45:30,110 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:45:30,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 1893 events. 263/1893 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 11810 event pairs, 72 based on Foata normal form. 0/1419 useless extension candidates. Maximal degree in co-relation 1224. Up to 192 conditions per place. [2023-09-01 00:45:30,219 INFO L119 LiptonReduction]: Number of co-enabled transitions 87720 [2023-09-01 00:45:35,208 INFO L134 LiptonReduction]: Checked pairs total: 252101 [2023-09-01 00:45:35,208 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-09-01 00:45:35,210 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:35,210 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:35,210 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:35,236 INFO L130 PetriNetUnfolder]: 56/341 cut-off events. [2023-09-01 00:45:35,237 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:45:35,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:35,237 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:35,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:35,237 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1581139798, now seen corresponding path program 1 times [2023-09-01 00:45:35,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:35,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466945896] [2023-09-01 00:45:35,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:35,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:35,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:35,259 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:35,280 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:35,280 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:35,280 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:35,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:45:35,280 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:35,281 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:35,281 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:35,281 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:45:35,312 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:45:35,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 411 transitions, 920 flow [2023-09-01 00:45:36,073 INFO L130 PetriNetUnfolder]: 530/3381 cut-off events. [2023-09-01 00:45:36,074 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:45:36,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 3381 events. 530/3381 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 24971 event pairs, 201 based on Foata normal form. 0/2563 useless extension candidates. Maximal degree in co-relation 2111. Up to 448 conditions per place. [2023-09-01 00:45:36,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 411 transitions, 920 flow [2023-09-01 00:45:36,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 372 places, 411 transitions, 920 flow [2023-09-01 00:45:36,168 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:36,168 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 372 places, 411 transitions, 920 flow [2023-09-01 00:45:36,168 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 372 places, 411 transitions, 920 flow [2023-09-01 00:45:36,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 411 transitions, 920 flow [2023-09-01 00:45:36,949 INFO L130 PetriNetUnfolder]: 530/3381 cut-off events. [2023-09-01 00:45:36,950 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:45:37,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3879 conditions, 3381 events. 530/3381 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 24971 event pairs, 201 based on Foata normal form. 0/2563 useless extension candidates. Maximal degree in co-relation 2111. Up to 448 conditions per place. [2023-09-01 00:45:37,359 INFO L119 LiptonReduction]: Number of co-enabled transitions 116186 [2023-09-01 00:45:42,842 INFO L134 LiptonReduction]: Checked pairs total: 375720 [2023-09-01 00:45:42,843 INFO L136 LiptonReduction]: Total number of compositions: 329 [2023-09-01 00:45:42,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:42,845 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:42,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:42,890 INFO L130 PetriNetUnfolder]: 83/455 cut-off events. [2023-09-01 00:45:42,890 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:45:42,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:42,891 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:42,891 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:42,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1961748157, now seen corresponding path program 1 times [2023-09-01 00:45:42,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:42,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610952056] [2023-09-01 00:45:42,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:42,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:42,915 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:42,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:42,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:42,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:42,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:45:42,938 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:42,939 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:42,939 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:42,939 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:45:42,975 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:45:42,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 456 transitions, 1032 flow [2023-09-01 00:45:44,480 INFO L130 PetriNetUnfolder]: 1117/6341 cut-off events. [2023-09-01 00:45:44,481 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:45:44,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7426 conditions, 6341 events. 1117/6341 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 55926 event pairs, 522 based on Foata normal form. 0/4859 useless extension candidates. Maximal degree in co-relation 3863. Up to 1024 conditions per place. [2023-09-01 00:45:44,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 412 places, 456 transitions, 1032 flow [2023-09-01 00:45:44,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 456 transitions, 1032 flow [2023-09-01 00:45:44,632 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:44,633 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 412 places, 456 transitions, 1032 flow [2023-09-01 00:45:44,633 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 412 places, 456 transitions, 1032 flow [2023-09-01 00:45:44,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 456 transitions, 1032 flow [2023-09-01 00:45:46,005 INFO L130 PetriNetUnfolder]: 1117/6341 cut-off events. [2023-09-01 00:45:46,005 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:45:46,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7426 conditions, 6341 events. 1117/6341 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 55926 event pairs, 522 based on Foata normal form. 0/4859 useless extension candidates. Maximal degree in co-relation 3863. Up to 1024 conditions per place. [2023-09-01 00:45:46,371 INFO L119 LiptonReduction]: Number of co-enabled transitions 148608 [2023-09-01 00:45:52,271 INFO L134 LiptonReduction]: Checked pairs total: 435817 [2023-09-01 00:45:52,271 INFO L136 LiptonReduction]: Total number of compositions: 360 [2023-09-01 00:45:52,273 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:52,274 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:52,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:52,327 INFO L130 PetriNetUnfolder]: 105/592 cut-off events. [2023-09-01 00:45:52,327 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:45:52,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:52,328 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:52,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:52,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1657055251, now seen corresponding path program 1 times [2023-09-01 00:45:52,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:52,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586067884] [2023-09-01 00:45:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:52,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:52,350 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:52,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:52,383 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:52,383 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:52,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:45:52,384 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:52,385 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:52,386 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:52,386 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:45:52,425 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:45:52,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 501 transitions, 1146 flow [2023-09-01 00:45:55,106 INFO L130 PetriNetUnfolder]: 2408/12309 cut-off events. [2023-09-01 00:45:55,107 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:45:55,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14686 conditions, 12309 events. 2408/12309 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 124189 event pairs, 1291 based on Foata normal form. 0/9523 useless extension candidates. Maximal degree in co-relation 7408. Up to 2304 conditions per place. [2023-09-01 00:45:55,494 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 501 transitions, 1146 flow [2023-09-01 00:45:55,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 452 places, 501 transitions, 1146 flow [2023-09-01 00:45:55,588 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:55,588 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 452 places, 501 transitions, 1146 flow [2023-09-01 00:45:55,588 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 452 places, 501 transitions, 1146 flow [2023-09-01 00:45:55,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 501 transitions, 1146 flow [2023-09-01 00:45:58,305 INFO L130 PetriNetUnfolder]: 2408/12309 cut-off events. [2023-09-01 00:45:58,305 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:45:58,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14686 conditions, 12309 events. 2408/12309 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 124189 event pairs, 1291 based on Foata normal form. 0/9523 useless extension candidates. Maximal degree in co-relation 7408. Up to 2304 conditions per place. [2023-09-01 00:45:59,150 INFO L119 LiptonReduction]: Number of co-enabled transitions 184986 [2023-09-01 00:46:05,296 INFO L134 LiptonReduction]: Checked pairs total: 608772 [2023-09-01 00:46:05,296 INFO L136 LiptonReduction]: Total number of compositions: 394 [2023-09-01 00:46:05,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:46:05,299 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:46:05,299 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:46:05,430 INFO L130 PetriNetUnfolder]: 150/797 cut-off events. [2023-09-01 00:46:05,430 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:46:05,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:46:05,430 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:46:05,431 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:46:05,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:46:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash 536177481, now seen corresponding path program 1 times [2023-09-01 00:46:05,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:46:05,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333551469] [2023-09-01 00:46:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:46:05,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:46:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:05,453 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:46:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:05,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:46:05,475 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:46:05,475 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:46:05,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:46:05,475 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:46:05,476 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:46:05,476 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:46:05,476 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:46:05,526 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:46:05,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 546 transitions, 1262 flow [2023-09-01 00:46:11,670 INFO L130 PetriNetUnfolder]: 5235/24421 cut-off events. [2023-09-01 00:46:11,670 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:46:12,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29627 conditions, 24421 events. 5235/24421 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 281405 event pairs, 3084 based on Foata normal form. 0/19051 useless extension candidates. Maximal degree in co-relation 14666. Up to 5120 conditions per place. [2023-09-01 00:46:12,228 INFO L82 GeneralOperation]: Start removeDead. Operand has 492 places, 546 transitions, 1262 flow [2023-09-01 00:46:12,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 492 places, 546 transitions, 1262 flow [2023-09-01 00:46:12,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:46:12,458 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 492 places, 546 transitions, 1262 flow [2023-09-01 00:46:12,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 492 places, 546 transitions, 1262 flow [2023-09-01 00:46:12,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 546 transitions, 1262 flow [2023-09-01 00:46:18,656 INFO L130 PetriNetUnfolder]: 5235/24421 cut-off events. [2023-09-01 00:46:18,657 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:46:19,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29627 conditions, 24421 events. 5235/24421 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 281405 event pairs, 3084 based on Foata normal form. 0/19051 useless extension candidates. Maximal degree in co-relation 14666. Up to 5120 conditions per place. [2023-09-01 00:46:20,689 INFO L119 LiptonReduction]: Number of co-enabled transitions 225320 [2023-09-01 00:46:27,410 INFO L134 LiptonReduction]: Checked pairs total: 752229 [2023-09-01 00:46:27,410 INFO L136 LiptonReduction]: Total number of compositions: 421 [2023-09-01 00:46:27,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:46:27,412 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:46:27,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:46:27,540 INFO L130 PetriNetUnfolder]: 224/1101 cut-off events. [2023-09-01 00:46:27,540 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:46:27,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:46:27,540 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:46:27,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:46:27,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:46:27,541 INFO L85 PathProgramCache]: Analyzing trace with hash -554445263, now seen corresponding path program 1 times [2023-09-01 00:46:27,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:46:27,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633271605] [2023-09-01 00:46:27,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:46:27,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:46:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:27,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:46:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:27,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:46:27,608 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:46:27,608 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:46:27,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:46:27,608 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:46:27,609 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:46:27,609 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:46:27,609 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:46:27,655 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:46:27,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 532 places, 591 transitions, 1380 flow [2023-09-01 00:46:41,204 INFO L130 PetriNetUnfolder]: 11390/49077 cut-off events. [2023-09-01 00:46:41,204 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:46:44,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60441 conditions, 49077 events. 11390/49077 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1162. Compared 627590 event pairs, 7181 based on Foata normal form. 0/38563 useless extension candidates. Maximal degree in co-relation 29605. Up to 11264 conditions per place. [2023-09-01 00:46:44,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 532 places, 591 transitions, 1380 flow [2023-09-01 00:46:44,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 532 places, 591 transitions, 1380 flow [2023-09-01 00:46:44,956 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:46:44,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 532 places, 591 transitions, 1380 flow [2023-09-01 00:46:44,957 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 532 places, 591 transitions, 1380 flow [2023-09-01 00:46:44,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 532 places, 591 transitions, 1380 flow [2023-09-01 00:46:58,248 INFO L130 PetriNetUnfolder]: 11390/49077 cut-off events. [2023-09-01 00:46:58,248 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:47:00,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60441 conditions, 49077 events. 11390/49077 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1162. Compared 627590 event pairs, 7181 based on Foata normal form. 0/38563 useless extension candidates. Maximal degree in co-relation 29605. Up to 11264 conditions per place. [2023-09-01 00:47:03,654 INFO L119 LiptonReduction]: Number of co-enabled transitions 269610 [2023-09-01 00:47:10,609 INFO L134 LiptonReduction]: Checked pairs total: 808892 [2023-09-01 00:47:10,609 INFO L136 LiptonReduction]: Total number of compositions: 461 [2023-09-01 00:47:10,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:47:10,611 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:47:10,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:47:10,775 INFO L130 PetriNetUnfolder]: 349/1566 cut-off events. [2023-09-01 00:47:10,775 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:47:10,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:47:10,775 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:47:10,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:47:10,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:47:10,776 INFO L85 PathProgramCache]: Analyzing trace with hash -431110701, now seen corresponding path program 1 times [2023-09-01 00:47:10,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:47:10,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493109319] [2023-09-01 00:47:10,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:47:10,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:47:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:47:10,803 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:47:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:47:10,829 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:47:10,830 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:47:10,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:47:10,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:47:10,830 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:47:10,831 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:47:10,831 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:47:10,831 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:47:10,874 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:47:10,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 572 places, 636 transitions, 1500 flow [2023-09-01 00:47:44,514 INFO L130 PetriNetUnfolder]: 24713/99333 cut-off events. [2023-09-01 00:47:44,515 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:47:51,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124024 conditions, 99333 events. 24713/99333 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2279. Compared 1391395 event pairs, 16398 based on Foata normal form. 0/78555 useless extension candidates. Maximal degree in co-relation 60417. Up to 24576 conditions per place. [2023-09-01 00:47:51,977 INFO L82 GeneralOperation]: Start removeDead. Operand has 572 places, 636 transitions, 1500 flow [2023-09-01 00:47:54,129 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 572 places, 636 transitions, 1500 flow [2023-09-01 00:47:54,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:47:54,129 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 572 places, 636 transitions, 1500 flow [2023-09-01 00:47:54,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 572 places, 636 transitions, 1500 flow [2023-09-01 00:47:54,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 572 places, 636 transitions, 1500 flow [2023-09-01 00:48:24,568 INFO L130 PetriNetUnfolder]: 24713/99333 cut-off events. [2023-09-01 00:48:24,569 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:48:31,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124024 conditions, 99333 events. 24713/99333 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2279. Compared 1391395 event pairs, 16398 based on Foata normal form. 0/78555 useless extension candidates. Maximal degree in co-relation 60417. Up to 24576 conditions per place. [2023-09-01 00:48:44,345 INFO L119 LiptonReduction]: Number of co-enabled transitions 317856 [2023-09-01 00:48:51,656 INFO L134 LiptonReduction]: Checked pairs total: 957289 [2023-09-01 00:48:51,656 INFO L136 LiptonReduction]: Total number of compositions: 492 [2023-09-01 00:48:51,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:48:51,658 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;@617dcb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:48:51,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:48:51,895 INFO L130 PetriNetUnfolder]: 560/2274 cut-off events. [2023-09-01 00:48:51,895 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:48:51,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:48:51,895 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 00:48:51,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:48:51,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:48:51,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1964348414, now seen corresponding path program 1 times [2023-09-01 00:48:51,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:48:51,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675442339] [2023-09-01 00:48:51,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:48:51,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:48:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:48:51,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:48:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:48:51,947 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:48:51,948 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:48:51,948 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:48:51,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:48:51,948 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:48:51,949 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:48:51,949 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:48:51,949 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:48:51,996 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:48:52,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 612 places, 681 transitions, 1622 flow [2023-09-01 00:50:03,300 INFO L130 PetriNetUnfolder]: 53396/201813 cut-off events. [2023-09-01 00:50:03,301 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:50:23,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255192 conditions, 201813 events. 53396/201813 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4329. Compared 3063533 event pairs, 36879 based on Foata normal form. 0/160531 useless extension candidates. Maximal degree in co-relation 123998. Up to 53248 conditions per place. [2023-09-01 00:50:23,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 612 places, 681 transitions, 1622 flow [2023-09-01 00:50:31,080 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 612 places, 681 transitions, 1622 flow [2023-09-01 00:50:31,080 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:50:31,080 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 612 places, 681 transitions, 1622 flow [2023-09-01 00:50:31,081 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 612 places, 681 transitions, 1622 flow [2023-09-01 00:50:31,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 612 places, 681 transitions, 1622 flow