./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 --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 00:40:34,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:40:34,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:40:34,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:40:34,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:40:34,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:40:34,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:40:34,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:40:34,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:40:34,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:40:34,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:40:34,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:40:34,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:40:34,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:40:34,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:40:34,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:40:34,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:40:34,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:40:34,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:40:34,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:40:34,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:40:34,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:40:34,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:40:34,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:40:34,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:40:34,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:40:34,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:40:34,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:40:34,860 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:40:34,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:40:34,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:40:34,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:40:34,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:40:34,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:40:34,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:40:34,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:40:34,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:40:34,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:40:34,868 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:40:34,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:40:34,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:40:34,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:40:34,895 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:40:34,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:40:34,896 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:40:34,896 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:40:34,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:40:34,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:40:34,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:40:34,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:40:34,898 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:40:34,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:40:34,898 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:40:34,899 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:40:34,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:40:34,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:40:34,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:40:34,899 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:40:34,899 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:40:34,900 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:40:34,900 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:40:34,900 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:40:34,900 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:40:34,900 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:40:34,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:40:34,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:40:34,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:40:34,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:40:34,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:40:34,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:40:34,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:40:34,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:40:34,901 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:40:34,902 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:40:34,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:40:34,902 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:40:34,902 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 78ae3f0dde82ce244d0cacebded5945a3f759d1f5aeba1d4553a1f59ef165385 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:40:35,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:40:35,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:40:35,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:40:35,146 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:40:35,146 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:40:35,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-09-01 00:40:36,092 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:40:36,283 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:40:36,283 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_37-indirect_racing.i [2023-09-01 00:40:36,298 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a83539415/a4040f42c7c741e19e2b100ae091ecea/FLAGef86b8e1b [2023-09-01 00:40:36,312 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a83539415/a4040f42c7c741e19e2b100ae091ecea [2023-09-01 00:40:36,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:40:36,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:40:36,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:40:36,317 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:40:36,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:40:36,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@696f03d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36, skipping insertion in model container [2023-09-01 00:40:36,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:40:36,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:40:36,571 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_37-indirect_racing.i[30176,30189] [2023-09-01 00:40:36,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:40:36,600 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:40:36,633 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_37-indirect_racing.i[30176,30189] [2023-09-01 00:40:36,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:40:36,687 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:40:36,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36 WrapperNode [2023-09-01 00:40:36,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:40:36,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:40:36,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:40:36,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:40:36,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,720 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-09-01 00:40:36,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:40:36,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:40:36,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:40:36,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:40:36,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,730 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,738 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:40:36,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:40:36,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:40:36,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:40:36,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (1/1) ... [2023-09-01 00:40:36,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:40:36,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:40:36,770 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 00:40:36,771 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 00:40:36,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:40:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:40:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:40:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:40:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:40:36,792 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:40:36,793 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:40:36,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:40:36,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:40:36,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:40:36,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:40:36,794 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 00:40:36,922 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:40:36,923 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:40:37,122 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:40:37,127 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:40:37,127 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 00:40:37,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:40:37 BoogieIcfgContainer [2023-09-01 00:40:37,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:40:37,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:40:37,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:40:37,132 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:40:37,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:40:36" (1/3) ... [2023-09-01 00:40:37,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bf1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:40:37, skipping insertion in model container [2023-09-01 00:40:37,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:40:36" (2/3) ... [2023-09-01 00:40:37,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76bf1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:40:37, skipping insertion in model container [2023-09-01 00:40:37,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:40:37" (3/3) ... [2023-09-01 00:40:37,134 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_37-indirect_racing.i [2023-09-01 00:40:37,147 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:40:37,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 00:40:37,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:40:37,217 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:40:37,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 126 transitions, 260 flow [2023-09-01 00:40:37,321 INFO L130 PetriNetUnfolder]: 17/167 cut-off events. [2023-09-01 00:40:37,322 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:40:37,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 167 events. 17/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 502 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-09-01 00:40:37,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 126 transitions, 260 flow [2023-09-01 00:40:37,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 121 transitions, 247 flow [2023-09-01 00:40:37,332 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:37,349 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 121 transitions, 247 flow [2023-09-01 00:40:37,351 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 121 transitions, 247 flow [2023-09-01 00:40:37,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 121 transitions, 247 flow [2023-09-01 00:40:37,372 INFO L130 PetriNetUnfolder]: 16/162 cut-off events. [2023-09-01 00:40:37,373 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:40:37,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 162 events. 16/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 482 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2023-09-01 00:40:37,376 INFO L119 LiptonReduction]: Number of co-enabled transitions 3760 [2023-09-01 00:40:40,121 INFO L134 LiptonReduction]: Checked pairs total: 7683 [2023-09-01 00:40:40,121 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-09-01 00:40:40,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:40,136 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:40,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:40,141 INFO L130 PetriNetUnfolder]: 2/35 cut-off events. [2023-09-01 00:40:40,141 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:40:40,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:40,141 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:40:40,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:40,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:40,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1404335981, now seen corresponding path program 1 times [2023-09-01 00:40:40,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:40,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379081937] [2023-09-01 00:40:40,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:40,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:40,223 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:40,253 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:40,254 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:40,255 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:40,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:40:40,266 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:40,275 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:40,277 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:40,277 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:40:40,317 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:40:40,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 168 transitions, 354 flow [2023-09-01 00:40:40,357 INFO L130 PetriNetUnfolder]: 31/279 cut-off events. [2023-09-01 00:40:40,362 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:40:40,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 279 events. 31/279 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 993 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 169. Up to 9 conditions per place. [2023-09-01 00:40:40,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 168 transitions, 354 flow [2023-09-01 00:40:40,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 168 transitions, 354 flow [2023-09-01 00:40:40,366 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:40,367 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 168 transitions, 354 flow [2023-09-01 00:40:40,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 168 transitions, 354 flow [2023-09-01 00:40:40,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 168 transitions, 354 flow [2023-09-01 00:40:40,397 INFO L130 PetriNetUnfolder]: 31/279 cut-off events. [2023-09-01 00:40:40,398 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:40:40,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 279 events. 31/279 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 993 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 169. Up to 9 conditions per place. [2023-09-01 00:40:40,406 INFO L119 LiptonReduction]: Number of co-enabled transitions 11600 [2023-09-01 00:40:43,428 INFO L134 LiptonReduction]: Checked pairs total: 33099 [2023-09-01 00:40:43,428 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-09-01 00:40:43,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:43,430 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:43,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:43,438 INFO L130 PetriNetUnfolder]: 10/82 cut-off events. [2023-09-01 00:40:43,438 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:40:43,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:43,438 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:40:43,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:43,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:43,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1252871407, now seen corresponding path program 1 times [2023-09-01 00:40:43,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:43,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472360637] [2023-09-01 00:40:43,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:43,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:43,475 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:43,494 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:43,495 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:43,495 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:43,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:40:43,495 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:43,496 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:43,496 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:43,496 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:40:43,518 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:40:43,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 210 transitions, 450 flow [2023-09-01 00:40:43,561 INFO L130 PetriNetUnfolder]: 50/432 cut-off events. [2023-09-01 00:40:43,561 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:40:43,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 432 events. 50/432 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1724 event pairs, 1 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-09-01 00:40:43,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 210 transitions, 450 flow [2023-09-01 00:40:43,566 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 210 transitions, 450 flow [2023-09-01 00:40:43,566 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:43,566 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 210 transitions, 450 flow [2023-09-01 00:40:43,567 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 210 transitions, 450 flow [2023-09-01 00:40:43,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 210 transitions, 450 flow [2023-09-01 00:40:43,594 INFO L130 PetriNetUnfolder]: 50/432 cut-off events. [2023-09-01 00:40:43,595 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:40:43,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 432 events. 50/432 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1724 event pairs, 1 based on Foata normal form. 0/310 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-09-01 00:40:43,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 22560 [2023-09-01 00:40:46,691 INFO L134 LiptonReduction]: Checked pairs total: 62479 [2023-09-01 00:40:46,691 INFO L136 LiptonReduction]: Total number of compositions: 171 [2023-09-01 00:40:46,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:46,696 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:46,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:46,706 INFO L130 PetriNetUnfolder]: 19/131 cut-off events. [2023-09-01 00:40:46,706 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:40:46,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:46,706 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:40:46,710 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:46,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1206409895, now seen corresponding path program 1 times [2023-09-01 00:40:46,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:46,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39611771] [2023-09-01 00:40:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:46,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:46,745 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:46,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:46,763 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:46,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:46,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:40:46,763 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:46,764 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:46,764 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:46,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:40:46,780 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:40:46,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 252 transitions, 548 flow [2023-09-01 00:40:46,855 INFO L130 PetriNetUnfolder]: 81/669 cut-off events. [2023-09-01 00:40:46,855 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:40:46,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 669 events. 81/669 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2969 event pairs, 6 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 452. Up to 32 conditions per place. [2023-09-01 00:40:46,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 252 transitions, 548 flow [2023-09-01 00:40:46,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 252 transitions, 548 flow [2023-09-01 00:40:46,863 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:46,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 252 transitions, 548 flow [2023-09-01 00:40:46,863 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 252 transitions, 548 flow [2023-09-01 00:40:46,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 252 transitions, 548 flow [2023-09-01 00:40:46,913 INFO L130 PetriNetUnfolder]: 81/669 cut-off events. [2023-09-01 00:40:46,913 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:40:46,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 724 conditions, 669 events. 81/669 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2969 event pairs, 6 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 452. Up to 32 conditions per place. [2023-09-01 00:40:46,931 INFO L119 LiptonReduction]: Number of co-enabled transitions 36960 [2023-09-01 00:40:50,240 INFO L134 LiptonReduction]: Checked pairs total: 110430 [2023-09-01 00:40:50,240 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-09-01 00:40:50,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:50,242 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:50,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:50,252 INFO L130 PetriNetUnfolder]: 29/189 cut-off events. [2023-09-01 00:40:50,252 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:40:50,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:50,252 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:40:50,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:50,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:50,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1189872070, now seen corresponding path program 1 times [2023-09-01 00:40:50,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:50,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766127604] [2023-09-01 00:40:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:50,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:50,270 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:50,286 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:50,286 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:50,286 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:50,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:40:50,287 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:50,287 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:50,287 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:50,287 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:40:50,309 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:40:50,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 294 transitions, 648 flow [2023-09-01 00:40:50,427 INFO L130 PetriNetUnfolder]: 140/1078 cut-off events. [2023-09-01 00:40:50,427 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:40:50,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 1078 events. 140/1078 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5570 event pairs, 23 based on Foata normal form. 0/788 useless extension candidates. Maximal degree in co-relation 714. Up to 80 conditions per place. [2023-09-01 00:40:50,439 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 294 transitions, 648 flow [2023-09-01 00:40:50,445 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 294 transitions, 648 flow [2023-09-01 00:40:50,445 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:50,445 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 294 transitions, 648 flow [2023-09-01 00:40:50,446 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 294 transitions, 648 flow [2023-09-01 00:40:50,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 294 transitions, 648 flow [2023-09-01 00:40:50,553 INFO L130 PetriNetUnfolder]: 140/1078 cut-off events. [2023-09-01 00:40:50,554 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:40:50,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 1078 events. 140/1078 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5570 event pairs, 23 based on Foata normal form. 0/788 useless extension candidates. Maximal degree in co-relation 714. Up to 80 conditions per place. [2023-09-01 00:40:50,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 54800 [2023-09-01 00:40:54,080 INFO L134 LiptonReduction]: Checked pairs total: 186047 [2023-09-01 00:40:54,080 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-09-01 00:40:54,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:54,082 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:54,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:54,100 INFO L130 PetriNetUnfolder]: 41/257 cut-off events. [2023-09-01 00:40:54,100 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:40:54,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:54,101 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:40:54,101 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:54,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2028523785, now seen corresponding path program 1 times [2023-09-01 00:40:54,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:54,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504258913] [2023-09-01 00:40:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:54,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:54,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:54,167 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:54,169 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:54,169 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:40:54,169 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:54,170 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:54,170 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:54,171 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:40:54,206 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:40:54,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 336 transitions, 750 flow [2023-09-01 00:40:54,440 INFO L130 PetriNetUnfolder]: 263/1839 cut-off events. [2023-09-01 00:40:54,440 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:40:54,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2071 conditions, 1839 events. 263/1839 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11411 event pairs, 72 based on Foata normal form. 0/1365 useless extension candidates. Maximal degree in co-relation 1177. Up to 192 conditions per place. [2023-09-01 00:40:54,463 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 336 transitions, 750 flow [2023-09-01 00:40:54,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 336 transitions, 750 flow [2023-09-01 00:40:54,474 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:54,474 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 302 places, 336 transitions, 750 flow [2023-09-01 00:40:54,475 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 302 places, 336 transitions, 750 flow [2023-09-01 00:40:54,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 336 transitions, 750 flow [2023-09-01 00:40:54,701 INFO L130 PetriNetUnfolder]: 263/1839 cut-off events. [2023-09-01 00:40:54,701 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:40:54,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2071 conditions, 1839 events. 263/1839 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11411 event pairs, 72 based on Foata normal form. 0/1365 useless extension candidates. Maximal degree in co-relation 1177. Up to 192 conditions per place. [2023-09-01 00:40:54,780 INFO L119 LiptonReduction]: Number of co-enabled transitions 76080 [2023-09-01 00:40:58,397 INFO L134 LiptonReduction]: Checked pairs total: 238125 [2023-09-01 00:40:58,397 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-09-01 00:40:58,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:40:58,399 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:40:58,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:40:58,425 INFO L130 PetriNetUnfolder]: 56/339 cut-off events. [2023-09-01 00:40:58,425 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:40:58,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:40:58,425 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:40:58,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:40:58,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:40:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash -937946467, now seen corresponding path program 1 times [2023-09-01 00:40:58,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:40:58,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989464992] [2023-09-01 00:40:58,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:40:58,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:40:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:58,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:40:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:40:58,491 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:40:58,491 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:40:58,491 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:40:58,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:40:58,491 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:40:58,492 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:40:58,492 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:40:58,492 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:40:58,512 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:40:58,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 378 transitions, 854 flow [2023-09-01 00:40:58,988 INFO L130 PetriNetUnfolder]: 530/3320 cut-off events. [2023-09-01 00:40:58,988 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:40:59,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 3320 events. 530/3320 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 24719 event pairs, 201 based on Foata normal form. 0/2502 useless extension candidates. Maximal degree in co-relation 2057. Up to 448 conditions per place. [2023-09-01 00:40:59,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 339 places, 378 transitions, 854 flow [2023-09-01 00:40:59,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 339 places, 378 transitions, 854 flow [2023-09-01 00:40:59,051 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:40:59,051 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 339 places, 378 transitions, 854 flow [2023-09-01 00:40:59,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 339 places, 378 transitions, 854 flow [2023-09-01 00:40:59,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 339 places, 378 transitions, 854 flow [2023-09-01 00:40:59,536 INFO L130 PetriNetUnfolder]: 530/3320 cut-off events. [2023-09-01 00:40:59,536 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:40:59,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 3320 events. 530/3320 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 24719 event pairs, 201 based on Foata normal form. 0/2502 useless extension candidates. Maximal degree in co-relation 2057. Up to 448 conditions per place. [2023-09-01 00:40:59,711 INFO L119 LiptonReduction]: Number of co-enabled transitions 100800 [2023-09-01 00:41:03,736 INFO L134 LiptonReduction]: Checked pairs total: 322068 [2023-09-01 00:41:03,736 INFO L136 LiptonReduction]: Total number of compositions: 293 [2023-09-01 00:41:03,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:41:03,738 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:41:03,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:41:03,786 INFO L130 PetriNetUnfolder]: 76/445 cut-off events. [2023-09-01 00:41:03,786 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:41:03,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:41:03,787 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:41:03,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:41:03,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:41:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash 971417500, now seen corresponding path program 1 times [2023-09-01 00:41:03,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:41:03,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168908198] [2023-09-01 00:41:03,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:41:03,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:41:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:03,821 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:41:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:03,849 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:41:03,850 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:41:03,850 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:41:03,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:41:03,850 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:41:03,851 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:41:03,851 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:41:03,851 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:41:03,872 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:41:03,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 420 transitions, 960 flow [2023-09-01 00:41:04,880 INFO L130 PetriNetUnfolder]: 1117/6273 cut-off events. [2023-09-01 00:41:04,880 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:41:04,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7358 conditions, 6273 events. 1117/6273 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 55513 event pairs, 522 based on Foata normal form. 0/4791 useless extension candidates. Maximal degree in co-relation 3802. Up to 1024 conditions per place. [2023-09-01 00:41:04,971 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 420 transitions, 960 flow [2023-09-01 00:41:05,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 376 places, 420 transitions, 960 flow [2023-09-01 00:41:05,009 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:41:05,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 376 places, 420 transitions, 960 flow [2023-09-01 00:41:05,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 376 places, 420 transitions, 960 flow [2023-09-01 00:41:05,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 420 transitions, 960 flow [2023-09-01 00:41:06,088 INFO L130 PetriNetUnfolder]: 1117/6273 cut-off events. [2023-09-01 00:41:06,088 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:41:06,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7358 conditions, 6273 events. 1117/6273 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 55513 event pairs, 522 based on Foata normal form. 0/4791 useless extension candidates. Maximal degree in co-relation 3802. Up to 1024 conditions per place. [2023-09-01 00:41:06,390 INFO L119 LiptonReduction]: Number of co-enabled transitions 128960 [2023-09-01 00:41:10,715 INFO L134 LiptonReduction]: Checked pairs total: 416616 [2023-09-01 00:41:10,715 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-09-01 00:41:10,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:41:10,718 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:41:10,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:41:10,759 INFO L130 PetriNetUnfolder]: 105/588 cut-off events. [2023-09-01 00:41:10,760 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:41:10,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:41:10,760 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:41:10,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:41:10,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:41:10,761 INFO L85 PathProgramCache]: Analyzing trace with hash -564211021, now seen corresponding path program 1 times [2023-09-01 00:41:10,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:41:10,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794614119] [2023-09-01 00:41:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:41:10,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:41:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:10,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:41:10,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:10,805 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:41:10,805 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:41:10,805 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:41:10,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:41:10,806 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:41:10,807 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:41:10,807 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:41:10,807 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:41:10,834 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:41:10,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 413 places, 462 transitions, 1068 flow [2023-09-01 00:41:13,139 INFO L130 PetriNetUnfolder]: 2408/12234 cut-off events. [2023-09-01 00:41:13,140 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:41:13,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14611 conditions, 12234 events. 2408/12234 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 123843 event pairs, 1291 based on Foata normal form. 0/9448 useless extension candidates. Maximal degree in co-relation 7340. Up to 2304 conditions per place. [2023-09-01 00:41:13,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 413 places, 462 transitions, 1068 flow [2023-09-01 00:41:13,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 413 places, 462 transitions, 1068 flow [2023-09-01 00:41:13,419 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:41:13,419 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 413 places, 462 transitions, 1068 flow [2023-09-01 00:41:13,419 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 413 places, 462 transitions, 1068 flow [2023-09-01 00:41:13,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 413 places, 462 transitions, 1068 flow [2023-09-01 00:41:15,649 INFO L130 PetriNetUnfolder]: 2408/12234 cut-off events. [2023-09-01 00:41:15,650 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:41:15,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14611 conditions, 12234 events. 2408/12234 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 123843 event pairs, 1291 based on Foata normal form. 0/9448 useless extension candidates. Maximal degree in co-relation 7340. Up to 2304 conditions per place. [2023-09-01 00:41:16,477 INFO L119 LiptonReduction]: Number of co-enabled transitions 160560 [2023-09-01 00:41:21,122 INFO L134 LiptonReduction]: Checked pairs total: 519954 [2023-09-01 00:41:21,122 INFO L136 LiptonReduction]: Total number of compositions: 352 [2023-09-01 00:41:21,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:41:21,124 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:41:21,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:41:21,202 INFO L130 PetriNetUnfolder]: 150/792 cut-off events. [2023-09-01 00:41:21,203 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:41:21,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:41:21,203 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:41:21,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:41:21,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:41:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1428659283, now seen corresponding path program 1 times [2023-09-01 00:41:21,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:41:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141119176] [2023-09-01 00:41:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:41:21,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:41:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:21,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:41:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:21,234 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:41:21,234 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:41:21,234 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:41:21,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:41:21,234 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:41:21,235 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:41:21,235 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:41:21,235 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:41:21,263 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:41:21,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 450 places, 504 transitions, 1178 flow [2023-09-01 00:41:26,499 INFO L130 PetriNetUnfolder]: 5235/24339 cut-off events. [2023-09-01 00:41:26,499 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:41:27,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29545 conditions, 24339 events. 5235/24339 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 280632 event pairs, 3084 based on Foata normal form. 0/18969 useless extension candidates. Maximal degree in co-relation 14591. Up to 5120 conditions per place. [2023-09-01 00:41:27,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 450 places, 504 transitions, 1178 flow [2023-09-01 00:41:27,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 450 places, 504 transitions, 1178 flow [2023-09-01 00:41:27,718 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:41:27,718 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 450 places, 504 transitions, 1178 flow [2023-09-01 00:41:27,718 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 450 places, 504 transitions, 1178 flow [2023-09-01 00:41:27,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 450 places, 504 transitions, 1178 flow [2023-09-01 00:41:31,985 INFO L130 PetriNetUnfolder]: 5235/24339 cut-off events. [2023-09-01 00:41:31,985 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:41:32,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29545 conditions, 24339 events. 5235/24339 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 280632 event pairs, 3084 based on Foata normal form. 0/18969 useless extension candidates. Maximal degree in co-relation 14591. Up to 5120 conditions per place. [2023-09-01 00:41:34,935 INFO L119 LiptonReduction]: Number of co-enabled transitions 195600 [2023-09-01 00:41:40,062 INFO L134 LiptonReduction]: Checked pairs total: 706503 [2023-09-01 00:41:40,062 INFO L136 LiptonReduction]: Total number of compositions: 374 [2023-09-01 00:41:40,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:41:40,064 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:41:40,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:41:40,176 INFO L130 PetriNetUnfolder]: 224/1095 cut-off events. [2023-09-01 00:41:40,177 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:41:40,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:41:40,177 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:41:40,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:41:40,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:41:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash 354613388, now seen corresponding path program 1 times [2023-09-01 00:41:40,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:41:40,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959969665] [2023-09-01 00:41:40,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:41:40,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:41:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:40,201 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:41:40,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:41:40,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:41:40,218 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:41:40,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:41:40,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:41:40,219 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:41:40,219 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:41:40,219 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:41:40,219 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:41:40,244 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:41:40,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 487 places, 546 transitions, 1290 flow [2023-09-01 00:41:51,234 INFO L130 PetriNetUnfolder]: 11390/48988 cut-off events. [2023-09-01 00:41:51,235 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:41:52,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60352 conditions, 48988 events. 11390/48988 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 628446 event pairs, 7181 based on Foata normal form. 0/38474 useless extension candidates. Maximal degree in co-relation 29523. Up to 11264 conditions per place. [2023-09-01 00:41:52,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 487 places, 546 transitions, 1290 flow [2023-09-01 00:41:52,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 487 places, 546 transitions, 1290 flow [2023-09-01 00:41:52,934 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:41:52,934 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 487 places, 546 transitions, 1290 flow [2023-09-01 00:41:52,934 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 487 places, 546 transitions, 1290 flow [2023-09-01 00:41:52,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 487 places, 546 transitions, 1290 flow [2023-09-01 00:42:04,172 INFO L130 PetriNetUnfolder]: 11390/48988 cut-off events. [2023-09-01 00:42:04,172 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:42:05,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60352 conditions, 48988 events. 11390/48988 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 628446 event pairs, 7181 based on Foata normal form. 0/38474 useless extension candidates. Maximal degree in co-relation 29523. Up to 11264 conditions per place. [2023-09-01 00:42:07,820 INFO L119 LiptonReduction]: Number of co-enabled transitions 234080 [2023-09-01 00:42:12,966 INFO L134 LiptonReduction]: Checked pairs total: 859072 [2023-09-01 00:42:12,967 INFO L136 LiptonReduction]: Total number of compositions: 406 [2023-09-01 00:42:12,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:42:12,968 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:42:12,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:42:13,133 INFO L130 PetriNetUnfolder]: 349/1555 cut-off events. [2023-09-01 00:42:13,134 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:42:13,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:42:13,134 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:42:13,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:42:13,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:42:13,134 INFO L85 PathProgramCache]: Analyzing trace with hash -368183661, now seen corresponding path program 1 times [2023-09-01 00:42:13,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:42:13,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377695080] [2023-09-01 00:42:13,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:42:13,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:42:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:13,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:42:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:13,166 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:42:13,166 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:42:13,167 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:42:13,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:42:13,167 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:42:13,167 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:42:13,167 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:42:13,167 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:42:13,195 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:42:13,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 524 places, 588 transitions, 1404 flow [2023-09-01 00:42:37,653 INFO L130 PetriNetUnfolder]: 24713/99237 cut-off events. [2023-09-01 00:42:37,653 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:42:44,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123928 conditions, 99237 events. 24713/99237 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 1390988 event pairs, 16398 based on Foata normal form. 0/78459 useless extension candidates. Maximal degree in co-relation 60328. Up to 24576 conditions per place. [2023-09-01 00:42:44,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 524 places, 588 transitions, 1404 flow [2023-09-01 00:42:45,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 524 places, 588 transitions, 1404 flow [2023-09-01 00:42:45,522 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:42:45,522 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 524 places, 588 transitions, 1404 flow [2023-09-01 00:42:45,522 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 524 places, 588 transitions, 1404 flow [2023-09-01 00:42:45,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 524 places, 588 transitions, 1404 flow [2023-09-01 00:43:09,636 INFO L130 PetriNetUnfolder]: 24713/99237 cut-off events. [2023-09-01 00:43:09,636 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:43:14,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123928 conditions, 99237 events. 24713/99237 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 1390988 event pairs, 16398 based on Foata normal form. 0/78459 useless extension candidates. Maximal degree in co-relation 60328. Up to 24576 conditions per place. [2023-09-01 00:43:20,552 INFO L119 LiptonReduction]: Number of co-enabled transitions 276000 [2023-09-01 00:43:25,999 INFO L134 LiptonReduction]: Checked pairs total: 910967 [2023-09-01 00:43:25,999 INFO L136 LiptonReduction]: Total number of compositions: 431 [2023-09-01 00:43:26,000 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:26,001 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;@34b01f08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:26,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:26,300 INFO L130 PetriNetUnfolder]: 560/2262 cut-off events. [2023-09-01 00:43:26,300 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:43:26,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:26,300 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 00:43:26,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:26,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1144068264, now seen corresponding path program 1 times [2023-09-01 00:43:26,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:26,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138796005] [2023-09-01 00:43:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:26,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:26,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:26,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:26,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:26,333 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:26,334 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:26,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:43:26,334 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:26,334 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:26,334 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:26,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:43:26,367 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:43:26,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 561 places, 630 transitions, 1520 flow [2023-09-01 00:44:21,690 INFO L130 PetriNetUnfolder]: 53396/201710 cut-off events. [2023-09-01 00:44:21,690 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:44:35,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255089 conditions, 201710 events. 53396/201710 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4201. Compared 3066359 event pairs, 36879 based on Foata normal form. 0/160428 useless extension candidates. Maximal degree in co-relation 123902. Up to 53248 conditions per place. [2023-09-01 00:44:35,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 561 places, 630 transitions, 1520 flow [2023-09-01 00:44:41,303 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 561 places, 630 transitions, 1520 flow [2023-09-01 00:44:41,304 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:44:41,304 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 561 places, 630 transitions, 1520 flow [2023-09-01 00:44:41,304 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 561 places, 630 transitions, 1520 flow [2023-09-01 00:44:41,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 561 places, 630 transitions, 1520 flow